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WP; TWR; SP, 1590 ACSR 2023-01-012023-12-31 C005475 ScheduleMonthlyPeakAndOutputAbstract 2023-01-012023-12-31 C005475 Lewistown-Mount Union 46kV line-Rebuildferc:ElectricUtilityMember 2023-12-31 C005475 Vegetation Management 2023-01-012023-12-31 C005475 JOHNSTOWN, JOHNSTOWN, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 13.2 2023-01-012023-12-31 C005475 Shelocata-Convert 230kV yard to Ring Bus 2023-01-012023-12-31 C005475 ferc:OtherFederalTaxMember 2023-12-31 C005475 Collateral posted with PJM 2023-12-31 C005475 ferc:ElectricUtilityMemberferc:FuelTaxMember 2023-01-012023-12-31 C005475 Provide Risk Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 JACKSON, YORK, PA, Transmission, Unattended, Primary 115, Secondary 69, Tertiary 2023-01-012023-12-31 C005475 Progress payments not included in CWIP 2023-12-31 C005475 Qualitrol Traveling Wave-PN Group4ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 HOSENSACK , LAUSCHTOWN, TWR; SP; SPH, 2493 ACAR 2023-01-012023-12-31 C005475 NORTH TEMPLE , ONTELAUNEE, SP, 1590 ACSR 2023-01-012023-12-31 C005475 Progress payments not included in CWIP 2023-01-012023-12-31 C005475 NORTHTEMPLE, TEMPLE, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-01-012023-12-31 C005475 ferc:OtherAdValoremTaxMember 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember North Hershey 69 kV Ring Bus 2023-12-31 C005475 GLADE , LEWIS RUN, WPH; 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SP, 1033.5 ACSR; 1590 ACSR 2023-01-012023-12-31 C005475 FAS 109 Accounting for Income Taxes 2023-12-31 C005475 Warrior Ridge 46kV Expansion Projectferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:IncomeTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Mroczynski, Mark D. 2023-01-012023-12-31 C005475 ferc:IncomeTaxMember 2022-12-31 C005475 SHAWVILLE , SHINGLETOWN, TWR; WPH; WP, 1033.5 ACSR 2023-01-012023-12-31 C005475 ALTOONA, HOLLIDAYSBURG, PA, Transmission, Unattended, Primary 230, Secondary 46, Tertiary 2023-01-012023-12-31 C005475 Piney-Glory-Seward-Rebuild using 230kV 2023-01-012023-12-31 C005475 ferc:OtherTaxMember 2022-12-31 C005475 Local Real Estate - 2023, Real Estate Tax, OH, 2023 2023-12-31 C005475 ferc:OtherAllocatedTaxMember 2022-12-31 C005475 OTCM Phase III Implementationferc:ElectricUtilityMember 2023-12-31 C005475 Qualitrol Traveling Wave-ME Group4ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 GERMANTOWN, LITTLESTOWN, PA, Transmission, Unattended, Primary 138, Secondary 115, Tertiary 13.2 2023-01-012023-12-31 C005475 Provide SVP & Chief Financial Officer Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 Fredericksburg 69 kV Ring Busferc:ElectricUtilityMember 2023-12-31 C005475 LEWISTOWN , RAYSTOWN, TWR; WPH; WP; SP, 1033.5 ACSR 2023-01-012023-12-31 C005475 South Reading #8 230-69kV 224MVA Transformer Replacement 2023-01-012023-12-31 C005475 Klecknersville New Sub - 230kV Ring Bus 2023-01-012023-12-31 C005475 Other (provide details in footnote): 2023-01-012023-12-31 C005475 JACKSON , THREE MILE ISLAND, WPH; TWR; WP; SPH, 1033.5 ACSR 2023-01-012023-12-31 C005475 PJM Formula Rate Calc Rev PJM Network PJM Network FNO 2023-01-012023-12-31 C005475 ARMSTRONG , BROOKVILLE, WPH; WP, 1033.5 ACSR 2023-01-012023-12-31 C005475 Provide Customer Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 COPPERSTONE PPL , MIDDLETOWN JUNCTION, TWR; WP; WPH; SP, 1590 ACSR 2023-01-012023-12-31 C005475 230 kV South Lebanon Ring Bus 2023-01-012023-12-31 C005475 HOSENSACK , NORTH TEMPLE, TWR; WPH, 1108.6 ACAR; 1590 ACSR 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember Altoona-Replace #1 230-46kV Transformer 2023-12-31 C005475 MOSHANNON , SHAWVILLE, WPH; WP, 1033.5 ACSR 2023-01-012023-12-31 C005475 OTCM Phase III Implementation 2023-01-012023-12-31 C005475 Deficient Accumulated Deferred Income Taxes Due to the Tax Cuts & Jobs Act (Amortized through 2037) 2023-12-31 C005475 CONASTONE , HUNTERSTOWN, TWR, 2493 ACAR 2023-01-012023-12-31 C005475 ferc:OtherTaxMember 2023-12-31 C005475 Other Accounts (Specify, details in footnote): 2023-01-012023-12-31 C005475 TMI 500/230kV Transformer Addition 2023-01-012023-12-31 C005475 IT Advanced Analytics-Transmission Asset 57088 2023-01-012023-12-31 C005475 ferc:MiscellaneousOtherTaxMember 2022-12-31 C005475 Provide President & CEO Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMemberferc:TransmissionPlantMember 2023-01-012023-12-31 C005475 SOUTHLEBANON, LEBANON, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-12-31 C005475 Counter UAS - Tier 2 substations - PNferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 IRONWOOD , NORTH LEBANON, TWR, 1590 ACSR 2023-01-012023-12-31 C005475 ferc:OtherStateTaxMember 2023-12-31 C005475 Excess Deferred Income Taxes due to the Tax Cuts and Jobs Act and State Tax Rate Changes (Amortized via ARAM over remaining book life of assets) 2023-01-012023-12-31 C005475 Hokes Ring Bus 2023-01-012023-12-31 C005475 GARRETT, MCHENRY, MD, Transmission, Unattended, Primary 138, Secondary 115, Tertiary 3.3 2023-12-31 C005475 GARRETT, MCHENRY, MD, Transmission, Unattended, Primary 138, Secondary 115, Tertiary 3.3 2023-01-012023-12-31 C005475 Hunterstown: Purchase Spare 500/230 kV 250 MVA Single Phase Transformerferc:ElectricUtilityMember 2023-12-31 C005475 N Boyertown-Ringing Rocks 69kV Rebuild  / Reconductor 2023-01-012023-12-31 C005475 Piney Control Buildingferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Raintree Sub- Four (New) Breaker Ringferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Other (provide details in footnote): 2023-01-012023-12-31 C005475 COPPERSTONE PPL , NORTH LEBANON, TWR, 1590 ACSR 2023-01-012023-12-31 C005475 ScheduleMonthlyIsoOrRtoTransmissionSystemPeakLoadAbstract 2023-01-012023-12-31 C005475 Local Real Estate - 2022, Real Estate Tax, PA, 2022 2022-12-31 C005475 Local Real Estate - 2023, Real Estate Tax, PA, 2023ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:FuelTaxMember 2023-01-012023-12-31 C005475 Baldy-South Hamburg 69kV Line Rehab 2023-01-012023-12-31 C005475 ferc:OtherFederalTaxMember 2023-01-012023-12-31 C005475 ScheduleSalesOfElectricityByRateSchedulesAbstract 2023-01-012023-12-31 C005475 0ferc:ElectricUtilityMember 2023-12-31 C005475 ferc:SalesAndUseTaxMember 2023-01-012023-12-31 C005475 MD Property Tax - 2022, Property Tax, MD, 2022 2022-12-31 C005475 Hokes Ring Busferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember South Reading #8 230-69kV 224MVA Transformer Replacement 2023-12-31 C005475 ferc:OtherTaxesAndFeesMember 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember Tolna - Install 115kV Circuit Breaker 2023-12-31 C005475 ST Credit Facility-Revolver 2023-12-31 C005475 ferc:MiscellaneousOtherTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 TMI500: Reliability Overlayferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember 2023-12-31 C005475 Warrior Ridge 46kV Expansion Project 2023-01-012023-12-31 C005475 FAS Accounting for Income Taxes 2022-12-31 C005475 IRONWOOD , SOUTH LEBANON, SP; TWR, 1590 ACSR 2023-01-012023-12-31 C005475 ScheduleSalesForResaleAbstract 2023-01-012023-12-31 C005475 Yeagertown-Install a new 230/46 kV transformerferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:OtherStateTaxMember 2022-12-31 C005475 HOMER CITY , JOHNSTOWN, WPH; WP; TWR; SP, 1590 ACSR; 636 ACSR 2023-01-012023-12-31 C005475 BRUNNER ISLAND , YORKANA, WPH; WP; TWR, 1590 ACSR 2023-01-012023-12-31 C005475 ferc:FuelTaxMember 2022-12-31 C005475 LEWISTOWN , YEAGERTOWN NO 2, WPH; WP; TWR; SP; SPH, 1033.5 ACSR 2023-01-012023-12-31 C005475 ScheduleGeneratingPlantStatisticsAbstract 2023-01-012023-12-31 C005475 Other (provide details in footnote): 2023-01-012023-12-31 C005475 ferc:IncomeTaxMember 2023-01-012023-12-31 C005475 Provide Strategy, LT Planning & Business Performance Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 2021-12-31 C005475 ferc:MiscellaneousOtherTaxMember 2023-01-012023-12-31 C005475 Cambria Slope-Add 115kV 6-Breaker Ring Bus 2023-01-012023-12-31 C005475 Rent - Pottsville Pike, Metropolitan Edison Company 2023-01-012023-12-31 C005475 Misoperation Relays: Gardners-Hunterstown 115 kVferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 CARROLL , GERMANTOWN, WPH; WP, 556.5 ACSR 2023-01-012023-12-31 C005475 Middletown Jct-Expand 230kV substationferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 MD Property Tax - 2023, Property Tax, MD, 2023 2022-12-31 C005475 HOSENSACK, ZIONSVILLE, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 2023-12-31 C005475 ferc:OtherLicenseAndFeesTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Federal Income Tax, Income Tax, , 2023 2023-01-012023-12-31 C005475 ferc:UnemploymentTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ScheduleRegionalTransmissionServiceRevenuesAbstract 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember 63 N Hershey-Turf Club 69kV Line Rehab 2023-01-012023-12-31 C005475 KITTATINNY , PORTLAND, TWR, 1590 ACSS/AW 2023-01-012023-12-31 C005475 ScheduleAllowanceInventoryAbstract 2023-01-012023-12-31 C005475 Raintree Sub- Four (New) Breaker Ringferc:ElectricUtilityMember 2023-12-31 C005475 Erie Transmission Facilitiesferc:ElectricUtilityMember 2023-12-31 C005475 4.10% Senior Notes - 2018 issuance 2023-01-012023-12-31 C005475 ferc:OtherAdValoremTaxMember 2023-12-31 C005475 ferc:FederalTaxMember 2022-12-31 C005475 ferc:ElectricUtilityMember LIDAR 100kv and greater Line Data Acquisition 2023-12-31 C005475 RAYSTOWN, JUNIATA, PA, Transmission, Unattended, Primary 230, Secondary 46, Tertiary 13.8 2023-01-012023-12-31 C005475 ferc:FederalTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ERIE EAST , FOUR MILE JUNCTION, WPH; WP; SP, 1033.5 ACSR 2023-01-012023-12-31 C005475 ERIEWEST, CRANESVILLE, PA, Transmission, Unattended, Primary 345, Secondary 115, Tertiary 13.84 2023-12-31 C005475 Misc Def Credits Other 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember North Hershey 69 kV Ring Bus 2023-01-012023-12-31 C005475 BERKS , SOUTH READING, TWR, 1033.5 ACSR 2023-01-012023-12-31 C005475 ROXBURYTRANSMISSION, ROXBURY, PA, Transmission, Unattended, Primary 138, Secondary 115, Tertiary 2023-12-31 C005475 ferc:OtherTaxesAndFeesMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Counter UAS - Tier 2 substations - PNferc:ElectricUtilityMember 2023-12-31 C005475 Penn Mar-Rockwood 115kV Line Rebuild 2023-01-012023-12-31 C005475 MD Property Tax - 2023, Property Tax, MD, 2023ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:StateTaxMember 2023-12-31 C005475 NERC Alert Mitigation 2023-01-012023-12-31 C005475 EAST TOWANDA , HILLSIDE, WPH; WP, 1033.5 ACSR 2023-01-012023-12-31 C005475 TMI500, MIDDLETOWN, PA, Transmission, Unattended, Primary 500, Secondary 230, Tertiary 2023-12-31 C005475 ferc:PayrollTaxMember 2022-12-31 C005475 Rent  -  Akron Control Facility, American Transmission Systems, Inc. 2023-01-012023-12-31 C005475 ferc:SalesAndUseTaxMember 2022-12-31 C005475 ferc:IncomeTaxMember 2023-12-31 C005475 ERIE SOUTH , WARREN, WPH; WP; WPK, 1033.5 ACSR 2023-01-012023-12-31 C005475 Provide External Affairs Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 Shade Gap - Replace Control Buildingferc:ElectricUtilityMember 2023-12-31 C005475 ferc:FuelTaxMember 2023-12-31 C005475 ferc:OtherAllocatedTaxMember 2023-12-31 C005475 LEWISTOWN, LEWISTOWN, PA, Transmission, Unattended, Primary 230, Secondary 46, Tertiary 13 2023-12-31 C005475 ferc:ElectricUtilityMember Cambria Slope-Add 115kV 6-Breaker Ring Bus 2023-01-012023-12-31 C005475 Local Real Estate - 2022, Real Estate Tax, PA, 2022 2023-12-31 C005475 BROOKVILLE , SQUAB HOLLOW, WPH; WP, 1033.5 ACSR 2023-01-012023-12-31 C005475 3.70% Senior Notes 2023-12-31 C005475 ferc:OtherUtilityMember Other (Specify) 2023-01-012023-12-31 C005475 NORTH LEBANON , NORTHKILL, TWR, 1590 ACSR 2023-01-012023-12-31 C005475 CONEMAUGH , VINCO, SP, 2493 ACAR 2023-01-012023-12-31 C005475 Provide Rates & Regulatory Affairs Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 ferc:RealEstateTaxMember 2023-12-31 C005475 3%ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 MAIT PJM 2022 Under Recovery (Amortized 2022-2024) 2023-12-31 C005475 3D Modeling for Engineering 2023-01-012023-12-31 C005475 Pension and OPEB Mark-to-Market Adjustment 2022-01-012022-12-31 C005475 ferc:TransmissionStudiesMember Total Transmission Service Studies 2023-01-012023-12-31 C005475 FOREST, RIDGWAY, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 13 2023-12-31 C005475 KEYSTONE, SHELOCTA, PA, Transmission, Unattended, Primary 500, Secondary 230, Tertiary 20 2023-01-012023-12-31 C005475 ferc:PropertyTaxMember 2022-12-31 C005475 Deficient Accumulated Deferred Income Taxes Due to the Tax Cuts & Jobs Act (Amortized through 2037) 2022-12-31 C005475 Homer City - Replace Transformerferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 DAUPHIN , JUNIATA, TWR; SP; SPH; WP; WPH, 1033.5 ACSR; 804.5 ACSR 2023-01-012023-12-31 C005475 North Meshoppen-Expand 115kV Busferc:ElectricUtilityMember 2023-12-31 C005475 Cly Substation Ring Bus Projectferc:ElectricUtilityMember 2023-12-31 C005475 , , , 2022-12-31 C005475 MARSHALL , MOSHANNON, WPH; WP; TWR, 1033.5 ACSR 2023-01-012023-12-31 C005475 Frystown - Turf Club Rebuild 2023-01-012023-12-31 C005475 TMI 500/230kV Transformer Additionferc:ElectricUtilityMember 2023-12-31 C005475 MIDDLETOWN JUNCTION , THREE MILE ISLAND NO 1, TWR, 1033.5 ACSR 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember Northwood 230 kV Ring Bus 2023-01-012023-12-31 C005475 ferc:RealEstateTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ERIEWEST, CRANESVILLE, PA, Transmission, Unattended, Primary 345, Secondary 115, Tertiary 13.84 2023-01-012023-12-31 C005475 PEACH BOTTOM , THREE MILE ISLAND, TWR, 2493 ACAR 2023-01-012023-12-31 C005475 MD Property Tax - 2023, Property Tax, MD, 2023 2023-01-012023-12-31 C005475 ferc:OtherUseTaxMember 2023-12-31 C005475 TMI 500/230kV Transformer Additionferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Misoperation Relays: Gardners-Hunterstown 115 kV 2023-01-012023-12-31 C005475 CONEMAUGH , JUNIATA, TWR; SPH, 2493 ACAR 2023-01-012023-12-31 C005475 JUNIATA , KEYSTONE, TWR, 2493 ACAR 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember MAIT +/- 50 MVAR Mobile STATCOM 2023-12-31 C005475 ferc:OperatingUtilityMember 2023-01-012023-12-31 C005475 Interest Income - Regulated Money Pool, FirstEnergy Corp.            2023-01-012023-12-31 C005475 Shawville 230 KV Terminal Upgradesferc:ElectricUtilityMember 2023-12-31 C005475 CAMBRIASLOPE, EBENSBURG, PA, Transmission, Unattended, Primary 115, Secondary 46, Tertiary 13.2 2023-01-012023-12-31 C005475 ferc:FranchiseTaxMember 2023-01-012023-12-31 C005475 NORTHMESHOPPEN, MESHOPPEN, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 12.67 2023-12-31 C005475 HOSENSACK, ZIONSVILLE, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 2023-01-012023-12-31 C005475 Deficient Accumulated Deferred Income Taxes Due to the Tax Cuts & Jobs Act (Amortized through 2037) 2023-01-012023-12-31 C005475 Provide Information Technology Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 Lisowski, Jason J. 2023-01-012023-12-31 C005475 ScheduleDistributionOfSalariesAndWagesAbstract 2023-01-012023-12-31 C005475 BERKS , SOUTH LEBANON, TWR; SP, 1033.5 ACSR; 1590 ACSR 2023-01-012023-12-31 C005475 Misoperation Relays Install PowerComm PCM5350, Ametek SMARTGAPferc:ElectricUtilityMember 2023-12-31 C005475 LYONS , NORTH TEMPLE, SP, 1108.6 ACAR; 1590 ACSR 2023-01-012023-12-31 C005475 ScheduleAmountsIncludedInIsoOrRtoSettlementAbstract 2023-01-012023-12-31 C005475 Collinsville 46 kV Substation Rebuildferc:ElectricUtilityMember 2023-12-31 C005475 MIDDLETOWNJUNCTION, MIDDLETOWN, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember Piney-Glory-Seward-Rebuild using 230kV 2023-12-31 C005475 ferc:OtherUseTaxMember 2022-12-31 C005475 NORTHKILL, BERNVILLE, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-01-012023-12-31 C005475 Misoperation Relays: Jackson-Westgate 115 kVferc:ElectricUtilityMember 2023-12-31 C005475 Excess Deferred Income Taxes due to the Tax Cuts and Jobs Act and State Tax Rate Changes (Amortized via ARAM over remaining book life of assets) 2022-12-31 C005475 Dividends 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMemberferc:OtherAdValoremTaxMember 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ALTOONA , RAYSTOWN, TWR; WP, 1033.5 ACSR 2023-01-012023-12-31 C005475 ScheduleHydroelectricGeneratingPlantStatisticsAbstract 2023-01-012023-12-31 C005475 FOREST, RIDGWAY, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 13 2023-01-012023-12-31 C005475 Proj Mgmt - Transmission (Priority 3 & 4)ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Cly Substation Ring Bus Projectferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Misoperation Relays: Gardners-Hunterstown 115 kVferc:ElectricUtilityMember 2023-12-31 C005475 ferc:ElectricUtilityMember Tolna - Install 115kV Circuit Breaker 2023-01-012023-12-31 C005475 ERIE SOUTH , FOUR MILE JUNCTION, WPH; WP; SP, 1033.5 ACSR 2023-01-012023-12-31 C005475 Equity Contribution from Parent 2023-01-012023-12-31 C005475 ERIESOUTH, ERIE, PA, Transmission, Unattended, Primary 345, Secondary 230, Tertiary 13.2 2023-01-012023-12-31 C005475 HILLVALLEY, MOUNT UNION, PA, Transmission, Unattended, Primary 115, Secondary 46, Tertiary 2023-12-31 C005475 2023-01-012023-12-31 C005475 ferc:OtherUseTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 FICA, Payroll Tax, , 2023 2023-12-31 C005475 HOSENSACK , NORTH BOYERTOWN, TWR; SP, 795 ACSR; 1033.5 ACSR 2023-01-012023-12-31 C005475 ferc:OtherAllocatedTaxMember 2023-01-012023-12-31 C005475 Asset Removal Costs 2022-01-012022-12-31 C005475 ScheduleElectricPlantHeldForFutureUseAbstract 2023-01-012023-12-31 C005475 4.10% Senior Notes - 2021 issuance 2023-12-31 C005475 Dividends 2022-01-012022-12-31 C005475 ferc:ElectricUtilityMember Cambria Slope-Add 115kV 6-Breaker Ring Bus 2023-12-31 C005475 Total 115kV Lines, , , 2023-01-012023-12-31 C005475 Transmission GIS Systemferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Total, , 2023-12-31 C005475 Total Generator Interconnection 2023-01-012023-12-31 C005475 JACKSON, YORK, PA, Transmission, Unattended, Primary 115, Secondary 69, Tertiary 2023-12-31 C005475 Erie West 345 kV, 115 kV-Install Enhanced Perimeter Security Fenceferc:ElectricUtilityMember 2023-12-31 C005475 FRP Hummelstown Sub - Lewistown Subferc:ElectricUtilityMember 2023-12-31 C005475 Qualitrol Traveling Wave-PN Group3ferc:ElectricUtilityMember 2023-12-31 C005475 ferc:OtherPropertyTaxMember 2023-12-31 C005475 Other (provide details in footnote): 2022-01-012022-12-31 C005475 LACKAWANNA PPL, NORTH MESHOPPEN, SP; WP, 1033.5 ACSS 2023-01-012023-12-31 C005475 ERIESOUTH, ERIE, PA, Transmission, Unattended, Primary 345, Secondary 230, Tertiary 13.2 2023-12-31 C005475 South Reading, Replace #7 230-69kV 224MVA Transformerferc:ElectricUtilityMember 2023-12-31 C005475 ferc:OtherAdValoremTaxMember 2022-12-31 C005475 ferc:ElectricUtilityMember Northwood 230 kV Ring Bus 2023-12-31 C005475 ferc:SeveranceTaxMember 2023-12-31 C005475 Captive Insurance -EIB, Inc. 2023-01-012023-12-31 C005475 Net Liability @ 21% 2023-01-012023-12-31 C005475 HOSENSACK , SPRINGFIELD, TWR, 1590 ACSR 2023-01-012023-12-31 C005475 3.60% Senior Notes 2023-12-31 C005475 Qualitrol Traveling Wave-ME Group4ferc:ElectricUtilityMember 2023-12-31 C005475 Local Real Estate - 2023, Real Estate Tax, PA, 2023 2023-12-31 C005475 Misoperation Relays: Jackson-Westgate 115 kVferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 HOOVERSVILLE, HOOVERSVILLE, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 2023-12-31 C005475 Operation and Maintenance Expense, , , 2023-01-012023-12-31 C005475 Middletown Jct-Expand 230kV substation 2023-01-012023-12-31 C005475 230 kV South Lebanon Ring Busferc:ElectricUtilityMember 2023-12-31 C005475 SEWARD, NEW FLORENCE, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 12.47 2023-01-012023-12-31 C005475 SEWARD, NEW FLORENCE, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 12.47 2023-12-31 C005475 ferc:StateTaxMember 2022-12-31 C005475 B(3), ED Transmission Line Research (external)  -EPRI, 107 2023-01-012023-12-31 C005475 ERIE SOUTH , ERIE WEST, TWR; WPH, 1033.5 ACSR 2023-01-012023-12-31 C005475 230 kV South Lebanon Ring Busferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Federal Excise Tax, Excise Tax, , 2023 2022-12-31 C005475 ferc:AdValoremTaxMember 2023-12-31 C005475 Transmission Charge - TMI Unit 1, Jersey Central Power & Light Company 2023-01-012023-12-31 C005475 ferc:OtherPropertyTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:GeneralPlantMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 HOOVERSVILLE, HOOVERSVILLE, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 2023-01-012023-12-31 C005475 JACKSON, YORK, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 13.2 2023-01-012023-12-31 C005475 Other (provide details in footnote): 2022-01-012022-12-31 C005475 MAIT PJM 2021 Over Recovery (Amortized 2021-2023) 2023-01-012023-12-31 C005475 FRP Hummelstown Sub - Lewistown Sub 2023-01-012023-12-31 C005475 TYRONENORTH, TYRONE, PA, Transmission, Unattended, Primary 115, Secondary 46, Tertiary 2.4 2023-01-012023-12-31 C005475 Provide Corporate Responsibility and Communications Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember North Temple-Northkill-69 kV-Construct-New Line Loop 2023-01-012023-12-31 C005475 MAIT PJM 2021 Over Recovery (Amortized 2021-2023) 2022-12-31 C005475 0 2023-12-31 C005475 ferc:OtherPropertyTaxMember 2023-01-012023-12-31 C005475 NORTHLEBANON, LEBANON, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-12-31 C005475 ferc:PropertyTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Yeagertown-Install a new 230/46 kV transformer 2023-01-012023-12-31 C005475 Yeagertown-Install a new 230/46 kV transformerferc:ElectricUtilityMember 2023-12-31 C005475 ferc:RealEstateTaxMember 2022-12-31 C005475 Homer City - Replace Transformerferc:ElectricUtilityMember 2023-12-31 C005475 Taylor,  K. Jon (SVP and CFO) 2023-01-012023-12-31 C005475 LEWISTOWN , SHINGLETOWN, TWR; WPH; WP; SP, 1033.5 ACSR 2023-01-012023-12-31 C005475 ferc:ElectricPlantInServiceMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ScheduleOtherPaidInCapitalAbstract 2023-01-012023-12-31 C005475 Proj Mgmt - Transmission (Priority 3 & 4)ferc:ElectricUtilityMember 2023-12-31 C005475 ROXBURYTRANSMISSION, ROXBURY, PA, Transmission, Unattended, Primary 138, Secondary 115, Tertiary 2023-01-012023-12-31 C005475 Qualitrol Traveling Wave-ME Group4 2023-01-012023-12-31 C005475 Progress payments not included in CWIP 2022-12-31 C005475 SchedulePumpedStorageGeneratingPlantStatisticsAbstract 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember MAIT +/- 50 MVAR Mobile STATCOM 2023-01-012023-12-31 C005475 Rent  -  Wadsworth Facility, American Transmission Systems, Inc. 2023-01-012023-12-31 C005475 ferc:LocalTaxMember 2023-12-31 C005475 JUNIATA , LEWISTOWN, TWR; WPH; SP; SPH, 1033.5 ACSR 2023-01-012023-12-31 C005475 ERIE WEST , WAYNE, WPH; WP; TWR; SP; SPH, 2493 ACAR 2023-01-012023-12-31 C005475 Rent - Penelec Facilities Use, Pennsylvania Electric Company 2023-01-012023-12-31 C005475 Amortization (Deferral) of Regulatory Assets, Net 2022-01-012022-12-31 C005475 ferc:AdValoremTaxMember 2023-01-012023-12-31 C005475 Federal Excise Tax, Excise Tax, , 2023 2023-12-31 C005475 ferc:ElectricUtilityMember Altoona-Replace #1 230-46kV Transformer 2023-01-012023-12-31 C005475 YORKANA, YORKANA, PA, Transmission, Unattended 2023-12-31 C005475 South Reading-Rebuild 69kV Stationferc:ElectricUtilityMember 2023-12-31 C005475 FAS 109 Accounting for Income Taxes 2023-01-012023-12-31 C005475 3.60% Senior Notes 2023-01-012023-12-31 C005475 Hunterstown: Purchase Spare 500/230 kV 250 MVA Single Phase Transformerferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Local Real Estate - 2023, Real Estate Tax, PA, 2023 2022-12-31 C005475 PJM Open Access Transmission Tariff - Attachment H-28A, Docket No. ER17-211-000 Commission approval of uncontested settlement in proceedings for MAIT's proposed forward looking formula rate. 2023-01-012023-12-31 C005475 ferc:ExciseTaxMember 2023-12-31 C005475 Belcher,  Samuel L. (President) 2023-01-012023-12-31 C005475 NORTHTEMPLE, TEMPLE, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-12-31 C005475 LYONS, KUTZTOWN, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-01-012023-12-31 C005475 Hill 115 kV Ring Bus 2023-01-012023-12-31 C005475 Lewistown-Mount Union 46kV line-Rebuild 2023-01-012023-12-31 C005475 Qualitrol Traveling Wave-ME Group3 2023-01-012023-12-31 C005475 FAS 109 Accounting for Income Taxes 2022-12-31 C005475 Shelocata-Convert 230kV yard to Ring Busferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:AdValoremTaxMember 2022-12-31 C005475 ERIE EAST , SOUTH RIPLEY, WPH; WP, 1033.5 ACSR 2023-01-012023-12-31 C005475 Misoperation Relays Install PowerComm PCM5350, Ametek SMARTGAP 2023-01-012023-12-31 C005475 Basis of Allocation 2023-01-012023-12-31 C005475 MIDDLETOWN JUNCTION , THREE MILE ISLAND NO 2, TWR, 1033.5 ACSR 2023-01-012023-12-31 C005475 ferc:FranchiseTaxMember 2023-12-31 C005475 North Hershey 69 kV Ring Bus 2023-01-012023-12-31 C005475 FAS109 NonPPA 2023-12-31 C005475 Piney - Erie South 230 kV Rebuildferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Provide Treasury Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 Bernville-South Hamburg 69kV Line Rebuildferc:ElectricUtilityMember 2023-12-31 C005475 Federal Excise Tax, Excise Tax, , 2023 2023-01-012023-12-31 C005475 Misoperation Relays Install PowerComm PCM5350, Ametek SMARTGAPferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Counter UAS - Tier 2 substations - PN 2023-01-012023-12-31 C005475 BOONETOWN , NORTH BOYERTOWN, TWR; SP, 795 ACSR 2023-01-012023-12-31 C005475 HUNTERSTOWN, GETTYSBURG, PA, Transmission, Unattended, Primary 500, Secondary 230, Tertiary 13.8 2023-12-31 C005475 Transmission GIS System 2023-01-012023-12-31 C005475 Allocation Factors, 2023-01-012023-12-31 C005475 5.39% Senior Notes (Docket No ES21-17-000) 2023-01-012023-12-31 C005475 Henry,  Michelle R. 2023-01-012023-12-31 C005475 SchedulePurchasedPowerAbstract 2023-01-012023-12-31 C005475 Seward #9 230-115kV Transformer Replacementferc:ElectricUtilityMember 2023-12-31 C005475 989L Windsor-Yorkana-115kV terminal upgradesferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:PenaltyTaxMember 2023-01-012023-12-31 C005475 NORTHBOYERTOWN, Bechtelsville, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-12-31 C005475 GREYSTONE , PORTLAND, TWR, 1590 ACSS/AW 2023-01-012023-12-31 C005475 Provide Transmission & Distribution Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 Vegetation Management 2022-12-31 C005475 SHAWVILLE, CLEARFIELD, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 17.2 2023-12-31 C005475 Provide Accounting & Tax Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 ferc:OtherTaxesAndFeesMember 2023-12-31 C005475 ALTOONA , BEAR ROCK, WPH; WP; TWR; SP, 1033.5 ACSR 2023-01-012023-12-31 C005475 SOUTHLEBANON, LEBANON, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-01-012023-12-31 C005475 Pension and OPEB Mark-to-Market Adjustment 2023-01-012023-12-31 C005475 Swann, Mary M. 2023-01-012023-12-31 C005475 Fredericksburg 69 kV Ring Busferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:GenerationStudiesMember Total Generator Interconnection 2023-01-012023-12-31 C005475 Misoperation Relays Install PowerComm PCM5350, Ametek SMARTGAP Programferc:ElectricUtilityMember 2023-12-31 C005475 ferc:OtherPropertyTaxMember 2022-12-31 C005475 Miscellaneous Regulatory Expense 2023-01-012023-12-31 C005475 JOHNSTOWN, JOHNSTOWN, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 13.2 2023-12-31 C005475 HUNTERSTOWN, GETTYSBURG, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 13.2 2023-01-012023-12-31 C005475 ferc:OtherUseTaxMember 2023-01-012023-12-31 C005475 FICA, Payroll Tax, , 2023 2022-12-31 C005475 Staub, Steven R. 2023-01-012023-12-31 C005475 ferc:ElectricPlantInServiceMemberferc:ElectricUtilityMember 2022-12-31 C005475 Other amounts expected to be refunded 2023-12-31 C005475 MARTINS CREEK , PORTLAND, TWR, 2493 ACAR; 1590 ACSR 2023-01-012023-12-31 C005475 ST Credit Facility-Revolver 2022-12-31 C005475 Erie Transmission Facilities 2023-01-012023-12-31 C005475 NORTHHERSHEY, Hummelstown, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-12-31 C005475 Deferred Tax Remeasurement 2022-12-31 C005475 Bernville-North Temple (835) 69kV, Tap to Van Reed Subferc:ElectricUtilityMember 2023-12-31 C005475 Smith Street Reconfigure 115 kV Substationferc:ElectricUtilityMember 2023-12-31 C005475 Piney Control Building 2023-01-012023-12-31 C005475 Ground Lease, Pennsylvania Electric Company 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMemberferc:FranchiseTaxMember 2023-01-012023-12-31 C005475 Shelocata-Convert 230kV yard to Ring Busferc:ElectricUtilityMember 2023-12-31 C005475 EAST TOWANDA , NORTH MESHOPPEN, WPH; WP; SP; SPH, 1033.5 ACSR 2023-01-012023-12-31 C005475 SUMMIT, CRESSON, PA, Transmission, Unattended, Primary 115, Secondary 46, Tertiary 11.95 2023-12-31 C005475 Qualitrol Traveling Wave-PN Group4ferc:ElectricUtilityMember 2023-12-31 C005475 ELKO , SQUAB HOLLOW, WPH; WP; SP, 1033.5 ACSR 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMemberferc:LocalTaxMember 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember 4% 2022-12-31 C005475 3D Modeling for Engineeringferc:ElectricUtilityMember 2023-12-31 C005475 Mroczynski, Mark D. (President) 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember 63 N Hershey-Turf Club 69kV Line Rehab 2023-12-31 C005475 ALBURTIS , BRANCHBURG, TWR, 2493 ACAR 2023-01-012023-12-31 C005475 Belcher, Samuel L. 2023-01-012023-12-31 C005475 0 2023-01-012023-12-31 C005475 0 2023-01-012023-12-31 C005475 NORTHLEBANON, LEBANON, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-01-012023-12-31 C005475 HUNTERSTOWN, GETTYSBURG, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 13.2 2023-12-31 C005475 115/69 kV Smith St #1 Transformer, 115 Breaker, Switchesferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember Local Real Estate - 2023, Real Estate Tax, OH, 2023 2023-01-012023-12-31 C005475 ScheduleCapitalStockExpenseAbstract 2023-01-012023-12-31 C005475 Local Real Estate - 2023, Real Estate Tax, PA, 2023 2023-01-012023-12-31 C005475 FICA, Payroll Tax, , 2023ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Seward #9 230-115kV Transformer Replacement 2023-01-012023-12-31 C005475 Taylor, K. Jon 2023-01-012023-12-31 C005475 NORTH TEMPLE , NORTHKILL, SP, 1590 ACSR 2023-01-012023-12-31 C005475 Smith St-Westgate-York Solid Line Rehabferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ScheduleTransmissionLinesAddedAbstract 2023-01-012023-12-31 C005475 ferc:PenaltyTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 0ferc:ElectricUtilityMember 2022-12-31 C005475 Shawnee-Walker 69kV-new lineferc:ElectricUtilityMember 2023-12-31 C005475 ferc:ElectricUtilityMember North Temple-Northkill-69 kV-Construct-New Line Loop 2023-12-31 C005475 ferc:SeveranceTaxMember 2022-12-31 C005475 Erie Transmission Facilitiesferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ST Credit Facility-Revolver 2023-01-012023-12-31 C005475 ferc:OtherStateTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:SchedulingSystemControlAndDispatchMember 2023-01-012023-12-31 C005475 Qualitrol Traveling Wave-ME Group3ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 SOUTHREADING, READING, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-01-012023-12-31 C005475 10% 2023-01-012023-12-31 C005475 BLAIRSVILLE EAST , SOCIAL HALL, WPH; WP; SP, 636 ACSR 2023-01-012023-12-31 C005475 Purchase Spare 115/69 kV Transformerferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 South Reading-Rebuild 69kV Stationferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 COPPERSTONE PPL , DAUPHIN PPL, TWR; SP; WPH, 1033.5 ACSR; 1590 ACSR 2023-01-012023-12-31 C005475 0ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 PJM Point to Point Transmission Various Various LFP 2023-01-012023-12-31 C005475 Equity Contribution from Parent 2022-01-012022-12-31 C005475 Over/Under Recovery of Revenue from PJM 2022-01-012022-12-31 C005475 Hill 115 kV Ring Busferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ERIESOUTH, ERIE, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 12.47 2023-01-012023-12-31 C005475 Other (provide details in footnote): 2023-01-012023-12-31 C005475 South Reading 230 kV Ring Bus 2023-01-012023-12-31 C005475 ferc:OtherStateTaxMember 2023-01-012023-12-31 C005475 ferc:PayrollTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 TYRONENORTH, TYRONE, PA, Transmission, Unattended, Primary 115, Secondary 46, Tertiary 2.4 2023-12-31 C005475 115/69 kV Smith St #1 Transformer, 115 Breaker, Switchesferc:ElectricUtilityMember 2023-12-31 C005475 GRAND POINT , ROXBURY, WPH; WP; SP, 636 ACSR 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember 2022-12-31 C005475 LYONS, KUTZTOWN, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-12-31 C005475 Erie West 345 kV, 115 kV-Install Enhanced Perimeter Security Fenceferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 5.39% Senior Notes (Docket No ES21-17-000) 2023-12-31 C005475 EASTTOWANDA, WYSOX, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 13.2 2023-01-012023-12-31 C005475 PA Corp Net Income, Income Tax, PA, 2023ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:SeveranceTaxMember 2023-01-012023-12-31 C005475 Summit West-Construct 115/46kV Substationferc:ElectricUtilityMember 2023-12-31 C005475 South Reading 230 kV Ring Busferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember South Reading #8 230-69kV 224MVA Transformer Replacement 2023-01-012023-12-31 C005475 Association Fees & Dues - Corporate 2023-01-012023-12-31 C005475 ScheduleCommonUtilityPlantAndExpensesAbstract 2023-01-012023-12-31 C005475 MAIT PJM 2022 Under Recovery (Amortized 2022-2024) 2022-12-31 C005475 Rent  -  Greensburg Corporate Center, West Penn Power Company 2023-01-012023-12-31 C005475 Qualitrol Traveling Wave-PN Group3 2023-01-012023-12-31 C005475 Goodwill 2022-12-31 C005475 B(3), ED Transmission Line Research (external)  -EPRI, 923 2023-01-012023-12-31 C005475 ferc:OtherFederalTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:ElectricPlantInServiceMemberferc:ElectricUtilityMember 2023-12-31 C005475 Over/Under Recovery of Revenue from PJM 2023-01-012023-12-31 C005475 , , , 2023-01-012023-12-31 C005475 ferc:ExciseTaxMember 2022-12-31 C005475 WARREN, WARREN, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 13.2 2023-01-012023-12-31 C005475 MIDDLETOWNJUNCTION, MIDDLETOWN, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 13 2023-12-31 C005475 NORTHBOYERTOWN, Bechtelsville, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-01-012023-12-31 C005475 ScheduleSteamElectricGeneratingPlantStatisticsAbstract 2023-01-012023-12-31 C005475 ferc:PayrollTaxMember 2023-12-31 C005475 Altoona Transmission Facility-Garageferc:ElectricUtilityMember 2023-12-31 C005475 Other amounts expected to be refunded 2023-01-012023-12-31 C005475 Excess Deferred Income Taxes due to the Tax Cuts and Jobs Act and State Tax Rate Changes (Amortized via ARAM over remaining book life of assets) 2023-12-31 C005475 115/69 kV Smith St #1 Transformer, 115 Breaker, Switches 2023-01-012023-12-31 C005475 LIDAR 100kv and greater Line Data Acquisition 2023-01-012023-12-31 C005475 See Footnote 2023-01-012023-12-31 C005475 MD Property Tax - 2023, Property Tax, MD, 2023 2023-12-31 C005475 Frystown - Turf Club Rebuildferc:ElectricUtilityMember 2023-12-31 C005475 Federal Income Tax, Income Tax, , 2023 2022-12-31 C005475 CLAYSBURG, EAST FREEDOM, PA, Transmission, Unattended, Primary 115, Secondary 46, Tertiary 13.2 2023-12-31 C005475 ferc:FederalInsuranceTaxMember 2022-12-31 C005475 ferc:DistributionSubstationMember 2023-12-31 C005475 Asset Removal Costs 2023-01-012023-12-31 C005475 Deferred Tax Remeasurement 2023-01-012023-12-31 C005475 NORTHKILL, BERNVILLE, PA, Transmission, Unattended, Primary 230, Secondary 69, Tertiary 2023-12-31 C005475 PJM Open Access Transmission Tariff - Attachment H-28A, Docket No. ER20-1951 Order accepting tariff revisions on compliance and approving uncontested settlement issued February 16, 2023, to comply with the requirements of Order No. 864. 2023-01-012023-12-31 C005475 TMI500: Reliability Overlay 2023-01-012023-12-31 C005475 Goodwill 2023-12-31 C005475 HUNTERSTOWN , JACKSON, WPH; TWR; WP; SP, 1590 ACSR 2023-01-012023-12-31 C005475 ferc:OtherLicenseAndFeesTaxMember 2023-01-012023-12-31 C005475 ScheduleUnrecoveredPlantAndRegulatoryStudyCostsAbstract 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember Piney-Glory-Seward-Rebuild using 230kV 2023-01-012023-12-31 C005475 Hokes Ring Busferc:ElectricUtilityMember 2023-12-31 C005475 ferc:ElectricUtilityMember 7% 2023-01-012023-12-31 C005475 GILBERT , SPRINGFIELD, TWR; SP, 1590 ACSR 2023-01-012023-12-31 C005475 Total 69kV Lines, , , 2023-01-012023-12-31 C005475 ScheduleRegulatoryCommissionExpensesAbstract 2023-01-012023-12-31 C005475 MIDDLETOWNJUNCTION, MIDDLETOWN, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 2023-12-31 C005475 MAIT PJM 2023 Under Recovery (Amortized 2023-2025) 2023-01-012023-12-31 C005475 JACKSON, YORK, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 13.2 2023-12-31 C005475 MD Property Tax - 2022, Property Tax, MD, 2022 2023-12-31 C005475 RAYSTOWN, JUNIATA, PA, Transmission, Unattended, Primary 230, Secondary 46, Tertiary 13.8 2023-12-31 C005475 Misoperation Relays Install PowerComm PCM5350, Ametek SMARTGAP Program 2023-01-012023-12-31 C005475 Other (provide details in footnote): 2022-01-012022-12-31 C005475 Greenwood-Westfall 46kV: Upgradesferc:ElectricUtilityMember 2023-12-31 C005475 Altoona-Replace #1 230-46kV Transformer 2023-01-012023-12-31 C005475 ferc:ElectricUtilityMember LIDAR 100kv and greater Line Data Acquisition 2023-01-012023-12-31 C005475 989L Windsor-Yorkana-115kV terminal upgradesferc:ElectricUtilityMember 2023-12-31 C005475 ferc:OperatingUtilityMember 2022-12-31 C005475 NORTH HERSHEY , NORTH TEMPLE, TWR, 1590 ACSR 2023-01-012023-12-31 C005475 ferc:FederalInsuranceTaxMemberferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 FAS Accounting for Income Taxes 2023-01-012023-12-31 C005475 SMITHSTREET, YORK, PA, Transmission, Attended, Primary 115, Secondary 69, Tertiary 13.8 2023-12-31 C005475 Purchase Spare 115/69 kV Transformer 2023-01-012023-12-31 C005475 ScheduleEnergyStorageOperationsLargePlantsAbstract 2023-01-012023-12-31 C005475 SMITHSTREET, YORK, PA, Transmission, Attended, Primary 115, Secondary 69, Tertiary 13.8 2023-01-012023-12-31 C005475 ferc:OtherTaxMember 2023-01-012023-12-31 C005475 4% 2023-01-012023-12-31 C005475 PA Corp Net Income, Income Tax, PA, 2023 2022-12-31 C005475 ferc:PropertyTaxMember 2023-12-31 C005475 Captive Insurance -EIB, Inc. 2022-12-31 C005475 LEWISTOWN, LEWISTOWN, PA, Transmission, Unattended, Primary 230, Secondary 46, Tertiary 13 2023-01-012023-12-31 C005475 Fredericksburg 69 kV Ring Bus 2023-01-012023-12-31 C005475 Portland Substation Camera Installation 2023-01-012023-12-31 C005475 ferc:RealEstateTaxMember 2023-01-012023-12-31 C005475 Tolna - Install 115kV Circuit Breaker 2023-01-012023-12-31 C005475 FOREST , GLADE, WPH; WP, 1033.5 ACSR 2023-01-012023-12-31 C005475 Local Real Estate - 2023, Real Estate Tax, OH, 2023 2022-12-31 C005475 Federal Income Tax, Income Tax, , 2023ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Eagle Valley& 31st St 115 kV Anti-Island 2023-01-012023-12-31 C005475 NORTHMESHOPPEN, MESHOPPEN, PA, Transmission, Unattended, Primary 230, Secondary 115, Tertiary 12.67 2023-01-012023-12-31 C005475 MD Property Tax - 2022, Property Tax, MD, 2022 2023-01-012023-12-31 C005475 Smith Street Reconfigure 115 kV Substationferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Provide Supply Chain Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 ferc:SalesAndUseTaxMember 2023-12-31 C005475 NORTHWOOD, EASTON, PA, Transmission, Attended, Primary 230, Secondary 115, Tertiary 13.2 2023-12-31 C005475 Transmission Investment Power Pool Agreement, Jersey Central Power & Light Company 2023-01-012023-12-31 C005475 Piney - Erie South 230 kV Rebuildferc:ElectricUtilityMember 2023-12-31 C005475 ferc:ElectricPlantInServiceMember Other Debit or Cr. Items (Describe, details in footnote):ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 ferc:PayrollTaxMember 2023-01-012023-12-31 C005475 CLAYSBURG, EAST FREEDOM, PA, Transmission, Unattended, Primary 115, Secondary 46, Tertiary 13.2 2023-01-012023-12-31 C005475 North Temple-Northkill-69 kV-Construct-New Line Loop 2023-01-012023-12-31 C005475 Other (provide details in footnote): 2023-01-012023-12-31 C005475 ferc:StateTaxMember 2023-01-012023-12-31 C005475 ferc:UnemploymentTaxMember 2023-01-012023-12-31 C005475 Eagle Valley& 31st St 115 kV Anti-Islandferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 EAST TOWANDA , MARSHALL, WPH; WP, 1033.5 ACSR 2023-01-012023-12-31 C005475 ScheduleEnergyStorageOperationsSmallPlantsAbstract 2023-01-012023-12-31 C005475 ferc:LocalTaxMember 2022-12-31 C005475 0 2023-01-012023-12-31 C005475 FIDDLERS GREEN , JOHNSTOWN, WPH; WP; TWR; SP, 1033.5 ACSR 2023-01-012023-12-31 C005475 MAIT PJM 2022 Under Recovery (Amortized 2022-2024) 2023-01-012023-12-31 C005475 4.10% Senior Notes - 2018 issuance 2023-12-31 C005475 Westfall: New 115/46V 75MVA Transformerferc:ElectricUtilityMember 2023-12-31 C005475 Provide Legal Support, FirstEnergy Service Company 2023-01-012023-12-31 C005475 YEAGERTOWN, YEAGERTOWN, PA, Transmission, Unattended 2023-12-31 C005475 Misoperation Relays Install PowerComm PCM5350, Ametek SMARTGAP Programferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Altoona-Replace #2 230-46kV Transformerferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Qualitrol Traveling Wave-PN Group3ferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 NORTHWOOD, EASTON, PA, Transmission, Attended, Primary 230, Secondary 115, Tertiary 13.2 2023-01-012023-12-31 C005475 IT Advanced Analytics-Transmission Asset 57088ferc:ElectricUtilityMember 2023-12-31 C005475 South Reading, Replace #7 230-69kV 224MVA Transformerferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 B(3), ED Transmission Line Research (external)  -EPRI, 568 2023-01-012023-12-31 C005475 TMI500, MIDDLETOWN, PA, Transmission, Unattended, Primary 500, Secondary 230, Tertiary 2023-01-012023-12-31 C005475 HUMMELSTOWN , NORTH HERSHEY, TWR, 1590 ACSR 2023-01-012023-12-31 C005475 PA Corp Net Income, Income Tax, PA, 2023 2023-12-31 C005475 Warriner Pond 115 kV Breaker-and-a-Halfferc:ElectricUtilityMember 2023-01-012023-12-31 C005475 Ground Lease, Metropolitan Edison Company 2023-01-012023-12-31 C005475 FAS109 NonPPA 2022-12-31 iso4217:USD xbrli:pure utr:kV utr:MVA utr:MW utr:MWh utr:mi
THIS FILING IS
Item 1:
An Initial (Original) Submission
OR
Resubmission No.

FERC FINANCIAL REPORT
FERC FORM No. 1: Annual Report of
Major Electric Utilities, Licensees
and Others and Supplemental
Form 3-Q: Quarterly Financial Report

These reports are mandatory under the Federal Power Act, Sections 3, 4(a), 304 and 309, and 18 CFR 141.1 and 141.400. Failure to report may result in criminal fines, civil penalties and other sanctions as provided by law. The Federal Energy Regulatory Commission does not consider these reports to be of confidential nature
Exact Legal Name of Respondent (Company)

Mid-Atlantic Interstate Transmission, LLC
Year/Period of Report

End of:
2023
/
Q4


INSTRUCTIONS FOR FILING FERC FORM NOS. 1 and 3-Q

GENERAL INFORMATION

  1. Purpose

    FERC Form No. 1 (FERC Form 1) is an annual regulatory requirement for Major electric utilities, licensees and others (18 C.F.R. § 141.1). FERC Form No. 3-Q ( FERC Form 3-Q) is a quarterly regulatory requirement which supplements the annual financial reporting requirement (18 C.F.R. § 141.400). These reports are designed to collect financial and operational information from electric utilities, licensees and others subject to the jurisdiction of the Federal Energy Regulatory Commission. These reports are also considered to be non-confidential public use forms.
  2. Who Must Submit

    Each Major electric utility, licensee, or other, as classified in the Commission’s Uniform System of Accounts Prescribed for Public Utilities, Licensees, and Others Subject To the Provisions of The Federal Power Act (18 C.F.R. Part 101), must submit FERC Form 1 (18 C.F.R. § 141.1), and FERC Form 3-Q (18 C.F.R. § 141.400).

    Note: Major means having, in each of the three previous calendar years, sales or transmission service that exceeds one of the following:
    1. one million megawatt hours of total annual sales,
    2. 100 megawatt hours of annual sales for resale,
    3. 500 megawatt hours of annual power exchanges delivered, or
    4. 500 megawatt hours of annual wheeling for others (deliveries plus losses).
  3. What and Where to Submit

    1. Submit FERC Form Nos. 1 and 3-Q electronically through the eCollection portal at https://eCollection.ferc.gov, and according to the specifications in the Form 1 and 3-Q taxonomies.
    2. The Corporate Officer Certification must be submitted electronically as part of the FERC Forms 1 and 3-Q filings.
    3. Submit immediately upon publication, by either eFiling or mail, two (2) copies to the Secretary of the Commission, the latest Annual Report to Stockholders. Unless eFiling the Annual Report to Stockholders, mail the stockholders report to the Secretary of the Commission at:
      Secretary
      Federal Energy Regulatory Commission 888 First Street, NE
      Washington, DC 20426
    4. For the CPA Certification Statement, submit within 30 days after filing the FERC Form 1, a letter or report (not applicable to filers classified as Class C or Class D prior to January 1, 1984). The CPA Certification Statement can be either eFiled or mailed to the Secretary of the Commission at the address above.

      The CPA Certification Statement should:
      1. Attest to the conformity, in all material aspects, of the below listed (schedules and pages) with the Commission's applicable Uniform System of Accounts (including applicable notes relating thereto and the Chief Accountant's published accounting releases), and
      2. Be signed by independent certified public accountants or an independent licensed public accountant certified or licensed by a regulatory authority of a State or other political subdivision of the U. S. (See 18 C.F.R. §§ 41.10-41.12 for specific qualifications.)

        Schedules
        Pages
        Comparative Balance Sheet 110-113
        Statement of Income 114-117
        Statement of Retained Earnings 118-119
        Statement of Cash Flows 120-121
        Notes to Financial Statements 122-123
    5. The following format must be used for the CPA Certification Statement unless unusual circumstances or conditions, explained in the letter or report, demand that it be varied. Insert parenthetical phrases only when exceptions are reported.

      “In connection with our regular examination of the financial statements of [COMPANY NAME] for the year ended on which we have reported separately under date of [DATE], we have also reviewed schedules [NAME OF SCHEDULES] of FERC Form No. 1 for the year filed with the Federal Energy Regulatory Commission, for conformity in all material respects with the requirements of the Federal Energy Regulatory Commission as set forth in its applicable Uniform System of Accounts and published accounting releases. Our review for this purpose included such tests of the accounting records and such other auditing procedures as we considered necessary in the circumstances.

      Based on our review, in our opinion the accompanying schedules identified in the preceding paragraph (except as noted below) conform in all material respects with the accounting requirements of the Federal Energy Regulatory Commission as set forth in its applicable Uniform System of Accounts and published accounting releases.” The letter or report must state which, if any, of the pages above do not conform to the Commission’s requirements. Describe the discrepancies that exist.
    6. Filers are encouraged to file their Annual Report to Stockholders, and the CPA Certification Statement using eFiling. Further instructions are found on the Commission’s website at https://www.ferc.gov/ferc-online/ferc-online/frequently-asked-questions-faqs-efilingferc-online.
    7. Federal, State, and Local Governments and other authorized users may obtain additional blank copies of FERC Form 1 and 3-Q free of charge from https://www.ferc.gov/general-information-0/electric-industry-forms.
  4. When to Submit

    FERC Forms 1 and 3-Q must be filed by the following schedule:

    1. FERC Form 1 for each year ending December 31 must be filed by April 18th of the following year (18 CFR § 141.1), and
    2. FERC Form 3-Q for each calendar quarter must be filed within 60 days after the reporting quarter (18 C.F.R. § 141.400).
  5. Where to Send Comments on Public Reporting Burden.

    The public reporting burden for the FERC Form 1 collection of information is estimated to average 1,168 hours per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data-needed, and completing and reviewing the collection of information. The public reporting burden for the FERC Form 3-Q collection of information is estimated to average 168 hours per response.

    Send comments regarding these burden estimates or any aspect of these collections of information, including suggestions for reducing burden, to the Federal Energy Regulatory Commission, 888 First Street NE, Washington, DC 20426 (Attention: Information Clearance Officer); and to the Office of Information and Regulatory Affairs, Office of Management and Budget, Washington, DC 20503 (Attention: Desk Officer for the Federal Energy Regulatory Commission). No person shall be subject to any penalty if any collection of information does not display a valid control number (44 U.S.C. § 3512 (a)).

GENERAL INSTRUCTIONS

  1. Prepare this report in conformity with the Uniform System of Accounts (18 CFR Part 101) (USofA). Interpret all accounting words and phrases in accordance with the USofA.
  2. Enter in whole numbers (dollars or MWH) only, except where otherwise noted. (Enter cents for averages and figures per unit where cents are important. The truncating of cents is allowed except on the four basic financial statements where rounding is required.) The amounts shown on all supporting pages must agree with the amounts entered on the statements that they support. When applying thresholds to determine significance for reporting purposes, use for balance sheet accounts the balances at the end of the current reporting period, and use for statement of income accounts the current year's year to date amounts.
  3. Complete each question fully and accurately, even if it has been answered in a previous report. Enter the word "None" where it truly and completely states the fact.
  4. For any page(s) that is not applicable to the respondent, omit the page(s) and enter "NA," "NONE," or "Not Applicable" in column (d) on the List of Schedules, pages 2 and 3.
  5. Enter the month, day, and year for all dates. Use customary abbreviations. The "Date of Report" included in the header of each page is to be completed only for resubmissions (see VII. below).
  6. Generally, except for certain schedules, all numbers, whether they are expected to be debits or credits, must be reported as positive. Numbers having a sign that is different from the expected sign must be reported by enclosing the numbers in parentheses.
  7. For any resubmissions, please explain the reason for the resubmission in a footnote to the data field.
  8. Do not make references to reports of previous periods/years or to other reports in lieu of required entries, except as specifically authorized.
  9. Wherever (schedule) pages refer to figures from a previous period/year, the figures reported must be based upon those shown by the report of the previous period/year, or an appropriate explanation given as to why the different figures were used.
  10. Schedule specific instructions are found in the applicable taxonomy and on the applicable blank rendered form.
Definitions for statistical classifications used for completing schedules for transmission system reporting are as follows:

FNS - Firm Network Transmission Service for Self. "Firm" means service that can not be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. "Network Service" is Network Transmission Service as described in Order No. 888 and the Open Access Transmission Tariff. "Self" means the respondent.

FNO - Firm Network Service for Others. "Firm" means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. "Network Service" is Network Transmission Service as described in Order No. 888 and the Open Access Transmission Tariff.

LFP - for Long-Term Firm Point-to-Point Transmission Reservations. "Long-Term" means one year or longer and” firm" means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. "Point-to-Point Transmission Reservations" are described in Order No. 888 and the Open Access Transmission Tariff. For all transactions identified as LFP, provide in a footnote the termination date of the contract defined as the earliest date either buyer or seller can unilaterally cancel the contract.

OLF - Other Long-Term Firm Transmission Service. Report service provided under contracts which do not conform to the terms of the Open Access Transmission Tariff. "Long-Term" means one year or longer and “firm” means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. For all transactions identified as OLF, provide in a footnote the termination date of the contract defined as the earliest date either buyer or seller can unilaterally get out of the contract.

SFP - Short-Term Firm Point-to-Point Transmission Reservations. Use this classification for all firm point-to-point transmission reservations, where the duration of each period of reservation is less than one-year.

NF - Non-Firm Transmission Service, where firm means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions.

OS - Other Transmission Service. Use this classification only for those services which can not be placed in the above-mentioned classifications, such as all other service regardless of the length of the contract and service FERC Form. Describe the type of service in a footnote for each entry.

AD - Out-of-Period Adjustments. Use this code for any accounting adjustments or "true-ups" for service provided in prior reporting periods. Provide an explanation in a footnote for each adjustment.

DEFINITIONS
  1. Commission Authorization (Comm. Auth.) -- The authorization of the Federal Energy Regulatory Commission, or any other Commission. Name the commission whose authorization was obtained and give date of the authorization.
  2. Respondent -- The person, corporation, licensee, agency, authority, or other Legal entity or instrumentality in whose behalf the report is made.

EXCERPTS FROM THE LAW

Federal Power Act, 16 U.S.C. § 791a-825r

Sec. 3. The words defined in this section shall have the following meanings for purposes of this Act, to with:

  1. ’Corporation' means any corporation, joint-stock company, partnership, association, business trust, organized group of persons, whether incorporated or not, or a receiver or receivers, trustee or trustees of any of the foregoing. It shall not include 'municipalities, as hereinafter defined;
  2. 'Person' means an individual or a corporation;
  3. 'Licensee, means any person, State, or municipality Licensed under the provisions of section 4 of this Act, and any assignee or successor in interest thereof;
  1. 'municipality means a city, county, irrigation district, drainage district, or other political subdivision or agency of a State competent under the Laws thereof to carry and the business of developing, transmitting, unitizing, or distributing power; ......
  1. "project' means. a complete unit of improvement or development, consisting of a power house, all water conduits, all dams and appurtenant works and structures (including navigation structures) which are a part of said unit, and all storage, diverting, or fore bay reservoirs directly connected therewith, the primary line or lines transmitting power there from to the point of junction with the distribution system or with the interconnected primary transmission system, all miscellaneous structures used and useful in connection with said unit or any part thereof, and all water rights, rights-of-way, ditches, dams, reservoirs, Lands, or interest in Lands the use and occupancy of which are necessary or appropriate in the maintenance and operation of such unit;

"Sec. 4. The Commission is hereby authorized and empowered
  1. 'To make investigations and to collect and record data concerning the utilization of the water 'resources of any region to be developed, the water-power industry and its relation to other industries and to interstate or foreign commerce, and concerning the location, capacity, development costs, and relation to markets of power sites; ... to the extent the Commission may deem necessary or useful for the purposes of this Act."

"Sec. 304.
  1. Every Licensee and every public utility shall file with the Commission such annual and other periodic or special* reports as the Commission may by rules and regulations or other prescribe as necessary or appropriate to assist the Commission in the proper administration of this Act. The Commission may prescribe the manner and FERC Form in which such reports shall be made, and require from such persons specific answers to all questions upon which the Commission may need information. The Commission may require that such reports shall include, among other things, full information as to assets and Liabilities, capitalization, net investment, and reduction thereof, gross receipts, interest due and paid, depreciation, and other reserves, cost of project and other facilities, cost of maintenance and operation of the project and other facilities, cost of renewals and replacement of the project works and other facilities, depreciation, generation, transmission, distribution, delivery, use, and sale of electric energy. The Commission may require any such person to make adequate provision for currently determining such costs and other facts. Such reports shall be made under oath unless the Commission otherwise specifies*.10
"Sec. 309.
  1. The Commission shall have power to perform any and all acts, and to prescribe, issue, make, and rescind such orders, rules and regulations as it may find necessary or appropriate to carry out the provisions of this Act. Among other things, such rules and regulations may define accounting, technical, and trade terms used in this Act; and may prescribe the FERC Form or FERC Forms of all statements, declarations, applications, and reports to be filed with the Commission, the information which they shall contain, and the time within which they shall be field..."

GENERAL PENALTIES

The Commission may assess up to $1 million per day per violation of its rules and regulations. See FPA § 316(a) (2005), 16 U.S.C. § 825o(a).


FERC FORM NO.
1

REPORT OF MAJOR ELECTRIC UTILITIES, LICENSEES AND OTHER
IDENTIFICATION
01 Exact Legal Name of Respondent

Mid-Atlantic Interstate Transmission, LLC
02 Year/ Period of Report


End of:
2023
/
Q4
03 Previous Name and Date of Change (If name changed during year)

/
04 Address of Principal Office at End of Period (Street, City, State, Zip Code)

76 South Main Street, Akron, OH 44308
05 Name of Contact Person

Tracy M. Ashton
06 Title of Contact Person

Assistant Controller
07 Address of Contact Person (Street, City, State, Zip Code)

76 South Main Street, Akron, OH, 44308
08 Telephone of Contact Person, Including Area Code

(330) 761-4111
09 This Report is An Original / A Resubmission

(1)
An Original

(2)
A Resubmission
10 Date of Report (Mo, Da, Yr)

03/26/2024
Annual Corporate Officer Certification
The undersigned officer certifies that:

I have examined this report and to the best of my knowledge, information, and belief all statements of fact contained in this report are correct statements of the business affairs of the respondent and the financial statements, and other financial information contained in this report, conform in all material respects to the Uniform System of Accounts.

01 Name

Jason J. Lisowski
02 Title

Vice President and Controller
03 Signature

/s/ Jason J. Lisowski
04 Date Signed (Mo, Da, Yr)

03/26/2024
Title 18, U.S.C. 1001 makes it a crime for any person to knowingly and willingly to make to any Agency or Department of the United States any false, fictitious or fraudulent statements as to any matter within its jurisdiction.


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
LIST OF SCHEDULES (Electric Utility)

Enter in column (c) the terms "none," "not applicable," or "NA," as appropriate, where no information or amounts have been reported for certain pages. Omit pages where the respondents are "none," "not applicable," or "NA".

Line No.
Title of Schedule
(a)
Reference Page No.
(b)
Remarks
(c)
ScheduleIdentificationAbstract
Identification
1
ScheduleListOfSchedulesAbstract
List of Schedules
2
1
ScheduleGeneralInformationAbstract
General Information
101
2
ScheduleControlOverRespondentAbstract
Control Over Respondent
102
3
ScheduleCorporationsControlledByRespondentAbstract
Corporations Controlled by Respondent
103
None
4
ScheduleOfficersAbstract
Officers
104
5
ScheduleDirectorsAbstract
Directors
105
6
ScheduleInformationOnFormulaRatesAbstract
Information on Formula Rates
106
7
ScheduleImportantChangesDuringTheQuarterYearAbstract
Important Changes During the Year
108
8
ScheduleComparativeBalanceSheetAbstract
Comparative Balance Sheet
110
9
ScheduleStatementOfIncomeAbstract
Statement of Income for the Year
114
10
ScheduleRetainedEarningsAbstract
Statement of Retained Earnings for the Year
118
12
ScheduleStatementOfCashFlowsAbstract
Statement of Cash Flows
120
12
ScheduleNotesToFinancialStatementsAbstract
Notes to Financial Statements
122
13
ScheduleStatementOfAccumulatedOtherComprehensiveIncomeAndHedgingActivitiesAbstract
Statement of Accum Other Comp Income, Comp Income, and Hedging Activities
122a
14
ScheduleSummaryOfUtilityPlantAndAccumulatedProvisionsForDepreciationAmortizationAndDepletionAbstract
Summary of Utility Plant & Accumulated Provisions for Dep, Amort & Dep
200
15
ScheduleNuclearFuelMaterialsAbstract
Nuclear Fuel Materials
202
None
16
ScheduleElectricPlantInServiceAbstract
Electric Plant in Service
204
17
ScheduleElectricPropertyLeasedToOthersAbstract
Electric Plant Leased to Others
213
None
18
ScheduleElectricPlantHeldForFutureUseAbstract
Electric Plant Held for Future Use
214
None
19
ScheduleConstructionWorkInProgressElectricAbstract
Construction Work in Progress-Electric
216
20
ScheduleAccumulatedProvisionForDepreciationOfElectricUtilityPlantAbstract
Accumulated Provision for Depreciation of Electric Utility Plant
219
21
ScheduleInvestmentsInSubsidiaryCompaniesAbstract
Investment of Subsidiary Companies
224
None
22
ScheduleMaterialsAndSuppliesAbstract
Materials and Supplies
227
None
23
ScheduleAllowanceInventoryAbstract
Allowances
228
None
24
ScheduleExtraordinaryPropertyLossesAbstract
Extraordinary Property Losses
230a
None
25
ScheduleUnrecoveredPlantAndRegulatoryStudyCostsAbstract
Unrecovered Plant and Regulatory Study Costs
230b
None
26
ScheduleTransmissionServiceAndGenerationInterconnectionStudyCostsAbstract
Transmission Service and Generation Interconnection Study Costs
231
27
ScheduleOtherRegulatoryAssetsAbstract
Other Regulatory Assets
232
28
ScheduleMiscellaneousDeferredDebitsAbstract
Miscellaneous Deferred Debits
233
29
ScheduleAccumulatedDeferredIncomeTaxesAbstract
Accumulated Deferred Income Taxes
234
30
ScheduleCapitalStockAbstract
Capital Stock
250
31
ScheduleOtherPaidInCapitalAbstract
Other Paid-in Capital
253
None
32
ScheduleCapitalStockExpenseAbstract
Capital Stock Expense
254b
None
33
ScheduleLongTermDebtAbstract
Long-Term Debt
256
34
ScheduleReconciliationOfReportedNetIncomeWithTaxableIncomeForFederalIncomeTaxesAbstract
Reconciliation of Reported Net Income with Taxable Inc for Fed Inc Tax
261
35
ScheduleTaxesAccruedPrepaidAndChargedDuringYearDistributionOfTaxesChargedAbstract
Taxes Accrued, Prepaid and Charged During the Year
262
36
ScheduleAccumulatedDeferredInvestmentTaxCreditsAbstract
Accumulated Deferred Investment Tax Credits
266
37
ScheduleOtherDeferredCreditsAbstract
Other Deferred Credits
269
38
ScheduleAccumulatedDeferredIncomeTaxesAcceleratedAmortizationPropertyAbstract
Accumulated Deferred Income Taxes-Accelerated Amortization Property
272
None
39
ScheduleAccumulatedDeferredIncomeTaxesOtherPropertyAbstract
Accumulated Deferred Income Taxes-Other Property
274
40
ScheduleAccumulatedDeferredIncomeTaxesOtherAbstract
Accumulated Deferred Income Taxes-Other
276
41
ScheduleOtherRegulatoryLiabilitiesAbstract
Other Regulatory Liabilities
278
42
ScheduleElectricOperatingRevenuesAbstract
Electric Operating Revenues
300
43
ScheduleRegionalTransmissionServiceRevenuesAbstract
Regional Transmission Service Revenues (Account 457.1)
302
None
44
ScheduleSalesOfElectricityByRateSchedulesAbstract
Sales of Electricity by Rate Schedules
304
None
45
ScheduleSalesForResaleAbstract
Sales for Resale
310
None
46
ScheduleElectricOperationsAndMaintenanceExpensesAbstract
Electric Operation and Maintenance Expenses
320
47
SchedulePurchasedPowerAbstract
Purchased Power
326
None
48
ScheduleTransmissionOfElectricityForOthersAbstract
Transmission of Electricity for Others
328
49
ScheduleTransmissionOfElectricityByIsoOrRtoAbstract
Transmission of Electricity by ISO/RTOs
331
50
ScheduleTransmissionOfElectricityByOthersAbstract
Transmission of Electricity by Others
332
None
51
ScheduleMiscellaneousGeneralExpensesAbstract
Miscellaneous General Expenses-Electric
335
52
ScheduleDepreciationDepletionAndAmortizationAbstract
Depreciation and Amortization of Electric Plant (Account 403, 404, 405)
336
53
ScheduleRegulatoryCommissionExpensesAbstract
Regulatory Commission Expenses
350
None
54
ScheduleResearchDevelopmentOrDemonstrationExpendituresAbstract
Research, Development and Demonstration Activities
352
55
ScheduleDistributionOfSalariesAndWagesAbstract
Distribution of Salaries and Wages
354
None
56
ScheduleCommonUtilityPlantAndExpensesAbstract
Common Utility Plant and Expenses
356
None
57
ScheduleAmountsIncludedInIsoOrRtoSettlementAbstract
Amounts included in ISO/RTO Settlement Statements
397
None
58
SchedulePurchasesSalesOfAncillaryServicesAbstract
Purchase and Sale of Ancillary Services
398
59
ScheduleMonthlyTransmissionSystemPeakLoadAbstract
Monthly Transmission System Peak Load
400
None
60
ScheduleMonthlyIsoOrRtoTransmissionSystemPeakLoadAbstract
Monthly ISO/RTO Transmission System Peak Load
400a
None
61
ScheduleElectricEnergyAccountAbstract
Electric Energy Account
401a
None
62
ScheduleMonthlyPeakAndOutputAbstract
Monthly Peaks and Output
401b
None
63
ScheduleSteamElectricGeneratingPlantStatisticsAbstract
Steam Electric Generating Plant Statistics
402
None
64
ScheduleHydroelectricGeneratingPlantStatisticsAbstract
Hydroelectric Generating Plant Statistics
406
None
65
SchedulePumpedStorageGeneratingPlantStatisticsAbstract
Pumped Storage Generating Plant Statistics
408
None
66
ScheduleGeneratingPlantStatisticsAbstract
Generating Plant Statistics Pages
410
None
66.1
ScheduleEnergyStorageOperationsLargePlantsAbstract
Energy Storage Operations (Large Plants)
414
None
66.2
ScheduleEnergyStorageOperationsSmallPlantsAbstract
Energy Storage Operations (Small Plants)
419
None
67
ScheduleTransmissionLineStatisticsAbstract
Transmission Line Statistics Pages
422
68
ScheduleTransmissionLinesAddedAbstract
Transmission Lines Added During Year
424
None
69
ScheduleSubstationsAbstract
Substations
426
70
ScheduleTransactionsWithAssociatedAffiliatedCompaniesAbstract
Transactions with Associated (Affiliated) Companies
429
71
FootnoteDataAbstract
Footnote Data
450
StockholdersReportsAbstract
Stockholders' Reports (check appropriate box)
Stockholders' Reports Check appropriate box:

Two copies will be submitted

No annual report to stockholders is prepared


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
GENERAL INFORMATION
1. Provide name and title of officer having custody of the general corporate books of account and address of office where the general corporate books are kept, and address of office where any other corporate books of account are kept, if different from that where the general corporate books are kept.

Jason J. Lisowski

Vice President and Controller

76 South Main Street, Akron, OH 44308
2. Provide the name of the State under the laws of which respondent is incorporated, and date of incorporation. If incorporated under a special law, give reference to such law. If not incorporated, state that fact and give the type of organization and the date organized.

State of Incorporation:
DE

Date of Incorporation:
2015-06-10

Incorporated Under Special Law:

3. If at any time during the year the property of respondent was held by a receiver or trustee, give (a) name of receiver or trustee, (b) date such receiver or trustee took possession, (c) the authority by which the receivership or trusteeship was created, and (d) date when possession by receiver or trustee ceased.

(a) Name of Receiver or Trustee Holding Property of the Respondent:
(a) Not applicable

(b) Date Receiver took Possession of Respondent Property:

(c) Authority by which the Receivership or Trusteeship was created:
(c) Not applicable

(d) Date when possession by receiver or trustee ceased:
4. State the classes or utility and other services furnished by respondent during the year in each State in which the respondent operated.

Transmission Service - Pennsylvania
5. Have you engaged as the principal accountant to audit your financial statements an accountant who is not the principal accountant for your previous year's certified financial statements?
(1)
Yes

(2)
No


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
CONTROL OVER RESPONDENT
1. If any corporation, business trust, or similar organization or a combination of such organizations jointly held control over the respondent at the end of the year, state name of controlling corporation or organization, manner in which control was held, and extent of control. If control was in a holding company organization, show the chain of ownership or control to the main parent company or organization. If control was held by a trustee(s), state name of trustee(s), name of beneficiary or beneficiaries for whom trust was maintained, and purpose of the trust.
FirstEnergy Transmission, LLC (FET) controlled the Respondent through its direct ownership of approximately 58% of the membership interest of the Respondent. Metropolitan Edison Company (ME) and Pennsylvania Electric Company (PN) hold approximately 17% and 25%, respectively, of the remaining membership interest, but do not influence control over Respondent. ME and PN are wholly-owned subsidiaries of FirstEnergy Corp. FET is a consolidated VIE of FirstEnergy Corp. who holds 80.1% of the issued and outstanding membership interests of FET, with North American Transmission Company II LLC holding 19.9%.

On January 1, 2024, PN and ME contributed their respective Class B equity interests of the Respondent to FirstEnergy Corp. in connection with FirstEnergy consolidating its Pennsylvania utilities. See Note 1 of the Notes to Financial Statements.


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
CORPORATIONS CONTROLLED BY RESPONDENT
  1. Report below the names of all corporations, business trusts, and similar organizations, controlled directly or indirectly by respondent at any time during the year. If control ceased prior to end of year, give particulars (details) in a footnote.
  2. If control was by other means than a direct holding of voting rights, state in a footnote the manner in which control was held, naming any intermediaries involved.
  3. If control was held jointly with one or more other interests, state the fact in a footnote and name the other interests.
Definitions
  1. See the Uniform System of Accounts for a definition of control.
  2. Direct control is that which is exercised without interposition of an intermediary.
  3. Indirect control is that which is exercised by the interposition of an intermediary which exercises direct control.
  4. Joint control is that in which neither interest can effectively control or direct action without the consent of the other, as where the voting control is equally divided between two holders, or each party holds a veto power over the other. Joint control may exist by mutual agreement or understanding between two or more parties who together have control within the meaning of the definition of control in the Uniform System of Accounts, regardless of the relative voting rights of each party.
Line No.
NameOfCompanyControlledByRespondent
Name of Company Controlled
(a)
CompanyControlledByRespondentKindOfBusinessDescription
Kind of Business
(b)
VotingStockOwnedByRespondentPercentage
Percent Voting Stock Owned
(c)
FootnoteReferences
Footnote Ref.
(d)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
OFFICERS
  1. Report below the name, title and salary for each executive officer whose salary is $50,000 or more. An "executive officer" of a respondent includes its president, secretary, treasurer, and vice president in charge of a principal business unit, division or function (such as sales, administration or finance), and any other person who performs similar policy making functions.
  2. If a change was made during the year in the incumbent of any position, show name and total remuneration of the previous incumbent, and the date the change in incumbency was made.
Line No.
OfficerTitle
Title
(a)
OfficerName
Name of Officer
(b)
OfficerSalary
Salary for Year
(c)
DateOfficerIncumbencyStarted
Date Started in Period
(d)
DateOfficerIncumbencyEnded
Date Ended in Period
(e)
1
President
Belcher, Samuel L.
248,500
2023-01-01
2023-05-01
2
President
Mroczynski, Mark D.
303,802
2023-05-24
2023-12-31
3
Senior Vice President and Chief Financial Officer
Taylor, K. Jon
870,962
2023-01-01
2023-12-31
4
Vice President and Controller
Lisowski, Jason J.
367,577
2023-01-01
2023-12-31
5
Vice President and Treasurer
Staub, Steven R.
419,089
2023-01-01
2023-12-31
6
Corporate Secretary
Swann, Mary M.
279,254
2023-01-01
2023-12-31
7
Salary information presented for each officer represents the individuals base salary, not the portion allocated to this affiliate company.


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
DIRECTORS
  1. Report below the information called for concerning each director of the respondent who held office at any time during the year. Include in column (a), name and abbreviated titles of the directors who are officers of the respondent.
  2. Provide the principle place of business in column (b), designate members of the Executive Committee in column (c), and the Chairman of the Executive Committee in column (d).
Line No.
NameAndTitleOfDirector
Name (and Title) of Director
(a)
PrincipalBusinessAddress
Principal Business Address
(b)
MemberOfTheExecutiveCommittee
Member of the Executive Committee
(c)
ChairmanOfTheExecutiveCommittee
Chairman of the Executive Committee
(d)
1
Belcher,  Samuel L. (President)
76 South Main Street, Akron, Ohio 44308
false
false
2
Mroczynski, Mark D. (President)
76 South Main Street, Akron, Ohio 44308
false
false
3
Henry,  Michelle R.
76 South Main Street, Akron, Ohio 44308
false
false
4
Taylor,  K. Jon (SVP and CFO)
76 South Main Street, Akron, Ohio 44308
false
false


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
INFORMATION ON FORMULA RATES
Does the respondent have formula rates?
Yes

No
  1. Please list the Commission accepted formula rates including FERC Rate Schedule or Tariff Number and FERC proceeding (i.e. Docket No) accepting the rate(s) or changes in the accepted rate.
Line No.
RateScheduleTariffNumber
FERC Rate Schedule or Tariff Number
(a)
ProceedingDocketNumber
FERC Proceeding
(b)
1
PJM Open Access Transmission Tariff - Attachment H-28A
Docket No. ER17-211-000 Commission approval of uncontested settlement in proceedings for MAIT's proposed forward looking formula rate.
2
PJM Open Access Transmission Tariff - Attachment H-28A
Docket No. ER20-1951 Order accepting tariff revisions on compliance and approving uncontested settlement issued February 16, 2023, to comply with the requirements of Order No. 864.


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
INFORMATION ON FORMULA RATES - FERC Rate Schedule/Tariff Number FERC Proceeding
Does the respondent file with the Commission annual (or more frequent) filings containing the inputs to the formula rate(s)?
Yes

No
  1. If yes, provide a listing of such filings as contained on the Commission's eLibrary website.
Line No.
AccessionNumber
Accession No.
(a)
DocumentDate
Document Date / Filed Date
(b)
DocketNumber
Docket No.
(c)
DescriptionOfFiling
Description
(d)
RateScheduleTariffNumber
Formula Rate FERC Rate Schedule Number or Tariff Number
(e)
1
06/01/2023
ER23-2089-000
Annual Informational Filing
PJM Open Access Transmission Tariff - Attachment H-28A


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
INFORMATION ON FORMULA RATES - Formula Rate Variances
  1. If a respondent does not submit such filings then indicate in a footnote to the applicable Form 1 schedule where formula rate inputs differ from amounts reported in the Form 1.
  2. The footnote should provide a narrative description explaining how the "rate" (or billing) was derived if different from the reported amount in the Form 1.
  3. The footnote should explain amounts excluded from the ratebase or where labor or other allocation factors, operating expenses, or other items impacting formula rate inputs differ from amounts reported in Form 1 schedule amounts.
  4. Where the Commission has provided guidance on formula rate inputs, the specific proceeding should be noted in the footnote.
Line No.
PageNumberOfFormulaRateVariances
Page No(s).
(a)
ScheduleOfFormulaRateVariances
Schedule
(b)
ColumnOfFormulaRateVariances
Column
(c)
LineNumberOfFormulaRateVariances
Line No.
(d)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
IMPORTANT CHANGES DURING THE QUARTER/YEAR

Give particulars (details) concerning the matters indicated below. Make the statements explicit and precise, and number them in accordance with the inquiries. Each inquiry should be answered. Enter "none," "not applicable," or "NA" where applicable. If information which answers an inquiry is given elsewhere in the report, make a reference to the schedule in which it appears.

  1. Changes in and important additions to franchise rights: Describe the actual consideration given therefore and state from whom the franchise rights were acquired. If acquired without the payment of consideration, state that fact.
  2. Acquisition of ownership in other companies by reorganization, merger, or consolidation with other companies: Give names of companies involved, particulars concerning the transactions, name of the Commission authorizing the transaction, and reference to Commission authorization.
  3. Purchase or sale of an operating unit or system: Give a brief description of the property, and of the transactions relating thereto, and reference to Commission authorization, if any was required. Give date journal entries called for by the Uniform System of Accounts were submitted to the Commission.
  4. Important leaseholds (other than leaseholds for natural gas lands) that have been acquired or given, assigned or surrendered: Give effective dates, lengths of terms, names of parties, rents, and other condition. State name of Commission authorizing lease and give reference to such authorization.
  5. Important extension or reduction of transmission or distribution system: State territory added or relinquished and date operations began or ceased and give reference to Commission authorization, if any was required. State also the approximate number of customers added or lost and approximate annual revenues of each class of service. Each natural gas company must also state major new continuing sources of gas made available to it from purchases, development, purchase contract or otherwise, giving location and approximate total gas volumes available, period of contracts, and other parties to any such arrangements, etc.
  6. Obligations incurred as a result of issuance of securities or assumption of liabilities or guarantees including issuance of short-term debt and commercial paper having a maturity of one year or less. Give reference to FERC or State Commission authorization, as appropriate, and the amount of obligation or guarantee.
  7. Changes in articles of incorporation or amendments to charter: Explain the nature and purpose of such changes or amendments.
  8. State the estimated annual effect and nature of any important wage scale changes during the year.
  9. State briefly the status of any materially important legal proceedings pending at the end of the year, and the results of any such proceedings culminated during the year.
  10. Describe briefly any materially important transactions of the respondent not disclosed elsewhere in this report in which an officer, director, security holder reported on Pages 104 or 105 of the Annual Report Form No. 1, voting trustee, associated company or known associate of any of these persons was a party or in which any such person had a material interest.
  11. (Reserved.)
  12. If the important changes during the year relating to the respondent company appearing in the annual report to stockholders are applicable in every respect and furnish the data required by Instructions 1 to 11 above, such notes may be included on this page.
  13. Describe fully any changes in officers, directors, major security holders and voting powers of the respondent that may have occurred during the reporting period.
  14. In the event that the respondent participates in a cash management program(s) and its proprietary capital ratio is less than 30 percent please describe the significant events or transactions causing the proprietary capital ratio to be less than 30 percent, and the extent to which the respondent has amounts loaned or money advanced to its parent, subsidiary, or affiliated companies through a cash management program(s). Additionally, please describe plans, if any to regain at least a 30 percent proprietary ratio.
1. None
2. None
3. None
4. See Note 3, "Leases", of the Notes to Financial Statements.
5. None
6. Mid-Atlantic Interstate Transmission, LLC (MAIT) has authorization from the Federal Energy Regulatory Commission (FERC) to issue short-term debt securities of up to $400 million through bank facilities and the internal utility money pool. MAIT has the ability to borrow from its regulated affiliates and FirstEnergy to meet its short-term working capital requirements. FirstEnergy Service Company administers this money pool and tracks surplus funds of FirstEnergy and the respective regulated subsidiary, as well as proceeds available from bank borrowings. Companies receiving a loan under the money pool agreements must repay the principal amount of the loan, together with accrued interest, within 364 days of borrowing the funds. The rate of interest is the same for each company receiving a loan from their respective pool and is based on the average cost of funds available through the pool. The average interest rate for borrowings for 2023 was 6.3% per annum.

In May 2023, MAIT issued $175 million of 5.39% unsecured notes due in 2033. Proceeds were used to repay short-term borrowings, to finance capital expenditures and for other general corporate purposes.
7. None
8. None
9. See Notes 4 and 5 of Notes to Financial Statements relating to Regulatory Matters and Commitments and Contingencies.
10. Please refer to the “Certain Relationships and Related Person Transactions” section of FirstEnergy’s 2024 Proxy Statement.
13. See pages 104 and 105. If applicable, see below for changes to directors.

Effective May 1, 2023, Belcher, Samuel L. was removed as Director.
Effective May 24, 2023, Mroczynski, Mark D. was named Director.
14. None


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
COMPARATIVE BALANCE SHEET (ASSETS AND OTHER DEBITS)
Line No.
Title of Account
(a)
Ref. Page No.
(b)
Current Year End of Quarter/Year Balance
(c)
Prior Year End Balance 12/31
(d)
1
UtilityPlantAbstract
UTILITY PLANT
2
UtilityPlant
Utility Plant (101-106, 114)
200
3,118,308,137
2,773,792,609
3
ConstructionWorkInProgress
Construction Work in Progress (107)
200
372,123,923
239,468,346
4
UtilityPlantAndConstructionWorkInProgress
TOTAL Utility Plant (Enter Total of lines 2 and 3)
3,490,432,060
3,013,260,955
5
AccumulatedProvisionForDepreciationAmortizationAndDepletionOfPlantUtility
(Less) Accum. Prov. for Depr. Amort. Depl. (108, 110, 111, 115)
200
398,157,079
384,944,517
6
UtilityPlantNet
Net Utility Plant (Enter Total of line 4 less 5)
3,092,274,981
2,628,316,438
7
NuclearFuelInProcessOfRefinementConversionEnrichmentAndFabrication
Nuclear Fuel in Process of Ref., Conv., Enrich., and Fab. (120.1)
202
8
NuclearFuelMaterialsAndAssembliesStockAccountMajorOnly
Nuclear Fuel Materials and Assemblies-Stock Account (120.2)
9
NuclearFuelAssembliesInReactorMajorOnly
Nuclear Fuel Assemblies in Reactor (120.3)
10
SpentNuclearFuelMajorOnly
Spent Nuclear Fuel (120.4)
11
NuclearFuelUnderCapitalLeases
Nuclear Fuel Under Capital Leases (120.6)
12
AccumulatedProvisionForAmortizationOfNuclearFuelAssemblies
(Less) Accum. Prov. for Amort. of Nucl. Fuel Assemblies (120.5)
202
13
NuclearFuelNet
Net Nuclear Fuel (Enter Total of lines 7-11 less 12)
14
UtilityPlantAndNuclearFuelNet
Net Utility Plant (Enter Total of lines 6 and 13)
3,092,274,981
2,628,316,438
15
OtherElectricPlantAdjustments
Utility Plant Adjustments (116)
16
GasStoredUndergroundNoncurrent
Gas Stored Underground - Noncurrent (117)
17
OtherPropertyAndInvestmentsAbstract
OTHER PROPERTY AND INVESTMENTS
18
NonutilityProperty
Nonutility Property (121)
19
AccumulatedProvisionForDepreciationAndAmortizationOfNonutilityProperty
(Less) Accum. Prov. for Depr. and Amort. (122)
20
InvestmentInAssociatedCompanies
Investments in Associated Companies (123)
21
InvestmentInSubsidiaryCompanies
Investment in Subsidiary Companies (123.1)
224
23
NoncurrentPortionOfAllowances
Noncurrent Portion of Allowances
228
24
OtherInvestments
Other Investments (124)
25
SinkingFunds
Sinking Funds (125)
26
DepreciationFund
Depreciation Fund (126)
27
AmortizationFundFederal
Amortization Fund - Federal (127)
28
OtherSpecialFunds
Other Special Funds (128)
29
SpecialFunds
Special Funds (Non Major Only) (129)
30
DerivativeInstrumentAssetsLongTerm
Long-Term Portion of Derivative Assets (175)
31
DerivativeInstrumentAssetsHedgesLongTerm
Long-Term Portion of Derivative Assets - Hedges (176)
32
OtherPropertyAndInvestments
TOTAL Other Property and Investments (Lines 18-21 and 23-31)
33
CurrentAndAccruedAssetsAbstract
CURRENT AND ACCRUED ASSETS
34
CashAndWorkingFunds
Cash and Working Funds (Non-major Only) (130)
35
Cash
Cash (131)
36
SpecialDeposits
Special Deposits (132-134)
37
WorkingFunds
Working Fund (135)
38
TemporaryCashInvestments
Temporary Cash Investments (136)
39
NotesReceivable
Notes Receivable (141)
40
CustomerAccountsReceivable
Customer Accounts Receivable (142)
41
OtherAccountsReceivable
Other Accounts Receivable (143)
20,178,138
16,422,807
42
AccumulatedProvisionForUncollectibleAccountsCredit
(Less) Accum. Prov. for Uncollectible Acct.-Credit (144)
43
NotesReceivableFromAssociatedCompanies
Notes Receivable from Associated Companies (145)
44
AccountsReceivableFromAssociatedCompanies
Accounts Receivable from Assoc. Companies (146)
2,840,382
7,146,980
45
FuelStock
Fuel Stock (151)
227
46
FuelStockExpensesUndistributed
Fuel Stock Expenses Undistributed (152)
227
47
Residuals
Residuals (Elec) and Extracted Products (153)
227
48
PlantMaterialsAndOperatingSupplies
Plant Materials and Operating Supplies (154)
227
49
Merchandise
Merchandise (155)
227
50
OtherMaterialsAndSupplies
Other Materials and Supplies (156)
227
51
NuclearMaterialsHeldForSale
Nuclear Materials Held for Sale (157)
202/227
52
AllowanceInventoryAndWithheld
Allowances (158.1 and 158.2)
228
53
NoncurrentPortionOfAllowances
(Less) Noncurrent Portion of Allowances
228
54
StoresExpenseUndistributed
Stores Expense Undistributed (163)
227
55
GasStoredCurrent
Gas Stored Underground - Current (164.1)
56
LiquefiedNaturalGasStoredAndHeldForProcessing
Liquefied Natural Gas Stored and Held for Processing (164.2-164.3)
57
Prepayments
Prepayments (165)
1,332,287
1,393,684
58
AdvancesForGas
Advances for Gas (166-167)
59
InterestAndDividendsReceivable
Interest and Dividends Receivable (171)
60
RentsReceivable
Rents Receivable (172)
61
AccruedUtilityRevenues
Accrued Utility Revenues (173)
62
MiscellaneousCurrentAndAccruedAssets
Miscellaneous Current and Accrued Assets (174)
63
DerivativeInstrumentAssets
Derivative Instrument Assets (175)
64
DerivativeInstrumentAssetsLongTerm
(Less) Long-Term Portion of Derivative Instrument Assets (175)
65
DerivativeInstrumentAssetsHedges
Derivative Instrument Assets - Hedges (176)
66
DerivativeInstrumentAssetsHedgesLongTerm
(Less) Long-Term Portion of Derivative Instrument Assets - Hedges (176)
67
CurrentAndAccruedAssets
Total Current and Accrued Assets (Lines 34 through 66)
24,350,807
24,963,471
68
DeferredDebitsAbstract
DEFERRED DEBITS
69
UnamortizedDebtExpense
Unamortized Debt Expenses (181)
5,005,734
4,573,031
70
ExtraordinaryPropertyLosses
Extraordinary Property Losses (182.1)
230a
71
UnrecoveredPlantAndRegulatoryStudyCosts
Unrecovered Plant and Regulatory Study Costs (182.2)
230b
72
OtherRegulatoryAssets
Other Regulatory Assets (182.3)
232
96,848,613
64,181,861
73
PreliminarySurveyAndInvestigationCharges
Prelim. Survey and Investigation Charges (Electric) (183)
84,730
84,730
74
PreliminaryNaturalGasSurveyAndInvestigationChargesAndOtherPreliminarySurveyAndInvestigationCharges
Preliminary Natural Gas Survey and Investigation Charges 183.1)
75
OtherPreliminarySurveyAndInvestigationCharges
Other Preliminary Survey and Investigation Charges (183.2)
76
ClearingAccounts
Clearing Accounts (184)
1,050
1,099
77
TemporaryFacilities
Temporary Facilities (185)
78
MiscellaneousDeferredDebits
Miscellaneous Deferred Debits (186)
233
236,383,491
231,630,540
79
DeferredLossesFromDispositionOfUtilityPlant
Def. Losses from Disposition of Utility Plt. (187)
80
ResearchDevelopmentAndDemonstrationExpenditures
Research, Devel. and Demonstration Expend. (188)
352
3,350
1,557
81
UnamortizedLossOnReacquiredDebt
Unamortized Loss on Reaquired Debt (189)
82
AccumulatedDeferredIncomeTaxes
Accumulated Deferred Income Taxes (190)
234
126,240,492
109,577,673
83
UnrecoveredPurchasedGasCosts
Unrecovered Purchased Gas Costs (191)
84
DeferredDebits
Total Deferred Debits (lines 69 through 83)
464,398,000
409,881,031
85
AssetsAndOtherDebits
TOTAL ASSETS (lines 14-16, 32, 67, and 84)
3,581,023,788
3,063,160,940


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
COMPARATIVE BALANCE SHEET (LIABILITIES AND OTHER CREDITS)
Line No.
Title of Account
(a)
Ref. Page No.
(b)
Current Year End of Quarter/Year Balance
(c)
Prior Year End Balance 12/31
(d)
1
ProprietaryCapitalAbstract
PROPRIETARY CAPITAL
2
CommonStockIssued
Common Stock Issued (201)
250
1,778,113,636
1,503,113,636
3
PreferredStockIssued
Preferred Stock Issued (204)
250
4
CapitalStockSubscribed
Capital Stock Subscribed (202, 205)
5
StockLiabilityForConversion
Stock Liability for Conversion (203, 206)
6
PremiumOnCapitalStock
Premium on Capital Stock (207)
7
OtherPaidInCapital
Other Paid-In Capital (208-211)
253
8
InstallmentsReceivedOnCapitalStock
Installments Received on Capital Stock (212)
252
9
DiscountOnCapitalStock
(Less) Discount on Capital Stock (213)
254
10
CapitalStockExpense
(Less) Capital Stock Expense (214)
254b
11
RetainedEarnings
Retained Earnings (215, 215.1, 216)
118
9,516,232
12,803,996
12
UnappropriatedUndistributedSubsidiaryEarnings
Unappropriated Undistributed Subsidiary Earnings (216.1)
118
13
ReacquiredCapitalStock
(Less) Reacquired Capital Stock (217)
250
14
NoncorporateProprietorship
Noncorporate Proprietorship (Non-major only) (218)
15
AccumulatedOtherComprehensiveIncome
Accumulated Other Comprehensive Income (219)
122(a)(b)
16
ProprietaryCapital
Total Proprietary Capital (lines 2 through 15)
1,787,629,868
1,515,917,632
17
LongTermDebtAbstract
LONG-TERM DEBT
18
Bonds
Bonds (221)
256
19
ReacquiredBonds
(Less) Reacquired Bonds (222)
256
20
AdvancesFromAssociatedCompanies
Advances from Associated Companies (223)
256
21
OtherLongTermDebt
Other Long-Term Debt (224)
256
1,025,000,000
850,000,000
22
UnamortizedPremiumOnLongTermDebt
Unamortized Premium on Long-Term Debt (225)
8,987,032
11,042,516
23
UnamortizedDiscountOnLongTermDebtDebit
(Less) Unamortized Discount on Long-Term Debt-Debit (226)
49,119
60,354
24
LongTermDebt
Total Long-Term Debt (lines 18 through 23)
1,033,937,913
860,982,162
25
OtherNoncurrentLiabilitiesAbstract
OTHER NONCURRENT LIABILITIES
26
ObligationsUnderCapitalLeaseNoncurrent
Obligations Under Capital Leases - Noncurrent (227)
62,064
27
AccumulatedProvisionForPropertyInsurance
Accumulated Provision for Property Insurance (228.1)
28
AccumulatedProvisionForInjuriesAndDamages
Accumulated Provision for Injuries and Damages (228.2)
29
AccumulatedProvisionForPensionsAndBenefits
Accumulated Provision for Pensions and Benefits (228.3)
30
AccumulatedMiscellaneousOperatingProvisions
Accumulated Miscellaneous Operating Provisions (228.4)
31
AccumulatedProvisionForRateRefunds
Accumulated Provision for Rate Refunds (229)
32
LongTermPortionOfDerivativeInstrumentLiabilities
Long-Term Portion of Derivative Instrument Liabilities
33
LongTermPortionOfDerivativeInstrumentLiabilitiesHedges
Long-Term Portion of Derivative Instrument Liabilities - Hedges
34
AssetRetirementObligations
Asset Retirement Obligations (230)
141,472
132,843
35
OtherNoncurrentLiabilities
Total Other Noncurrent Liabilities (lines 26 through 34)
141,472
194,907
36
CurrentAndAccruedLiabilitiesAbstract
CURRENT AND ACCRUED LIABILITIES
37
NotesPayable
Notes Payable (231)
38
AccountsPayable
Accounts Payable (232)
30
16
39
NotesPayableToAssociatedCompanies
Notes Payable to Associated Companies (233)
124,680,112
113,406,578
40
AccountsPayableToAssociatedCompanies
Accounts Payable to Associated Companies (234)
3,798,179
7,598,011
41
CustomerDeposits
Customer Deposits (235)
42
TaxesAccrued
Taxes Accrued (236)
262
368,605
286,298
43
InterestAccrued
Interest Accrued (237)
8,568,750
5,424,583
44
DividendsDeclared
Dividends Declared (238)
45
MaturedLongTermDebt
Matured Long-Term Debt (239)
46
MaturedInterest
Matured Interest (240)
47
TaxCollectionsPayable
Tax Collections Payable (241)
48
MiscellaneousCurrentAndAccruedLiabilities
Miscellaneous Current and Accrued Liabilities (242)
7,603,528
156,527
49
ObligationsUnderCapitalLeasesCurrent
Obligations Under Capital Leases-Current (243)
342,386
423,722
50
DerivativesInstrumentLiabilities
Derivative Instrument Liabilities (244)
51
LongTermPortionOfDerivativeInstrumentLiabilities
(Less) Long-Term Portion of Derivative Instrument Liabilities
52
DerivativeInstrumentLiabilitiesHedges
Derivative Instrument Liabilities - Hedges (245)
53
LongTermPortionOfDerivativeInstrumentLiabilitiesHedges
(Less) Long-Term Portion of Derivative Instrument Liabilities-Hedges
54
CurrentAndAccruedLiabilities
Total Current and Accrued Liabilities (lines 37 through 53)
145,361,590
127,295,735
55
DeferredCreditsAbstract
DEFERRED CREDITS
56
CustomerAdvancesForConstruction
Customer Advances for Construction (252)
57
AccumulatedDeferredInvestmentTaxCredits
Accumulated Deferred Investment Tax Credits (255)
266
1,831,045
1,930,730
58
DeferredGainsFromDispositionOfUtilityPlant
Deferred Gains from Disposition of Utility Plant (256)
59
OtherDeferredCredits
Other Deferred Credits (253)
269
19,769
60
OtherRegulatoryLiabilities
Other Regulatory Liabilities (254)
278
161,550,846
170,443,686
61
UnamortizedGainOnReacquiredDebt
Unamortized Gain on Reacquired Debt (257)
62
AccumulatedDeferredIncomeTaxesAcceleratedAmortizationProperty
Accum. Deferred Income Taxes-Accel. Amort.(281)
272
63
AccumulatedDeferredIncomeTaxesOtherProperty
Accum. Deferred Income Taxes-Other Property (282)
398,623,867
352,269,578
64
AccumulatedDeferredIncomeTaxesOther
Accum. Deferred Income Taxes-Other (283)
51,947,187
34,106,741
65
DeferredCredits
Total Deferred Credits (lines 56 through 64)
613,952,945
558,770,504
66
LiabilitiesAndOtherCredits
TOTAL LIABILITIES AND STOCKHOLDER EQUITY (lines 16, 24, 35, 54 and 65)
3,581,023,788
3,063,160,940


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
STATEMENT OF INCOME

Quarterly

  1. Report in column (c) the current year to date balance. Column (c) equals the total of adding the data in column (g) plus the data in column (i) plus the data in column (k). Report in column (d) similar data for the previous year. This information is reported in the annual filing only.
  2. Enter in column (e) the balance for the reporting quarter and in column (f) the balance for the same three month period for the prior year.
  3. Report in column (g) the quarter to date amounts for electric utility function; in column (i) the quarter to date amounts for gas utility, and in column (k) the quarter to date amounts for other utility function for the current year quarter.
  4. Report in column (h) the quarter to date amounts for electric utility function; in column (j) the quarter to date amounts for gas utility, and in column (l) the quarter to date amounts for other utility function for the prior year quarter.
  5. If additional columns are needed, place them in a footnote.

Annual or Quarterly if applicable

  1. Do not report fourth quarter data in columns (e) and (f)
  2. Report amounts for accounts 412 and 413, Revenues and Expenses from Utility Plant Leased to Others, in another utility column in a similar manner to a utility department. Spread the amount(s) over Lines 2 thru 26 as appropriate. Include these amounts in columns (c) and (d) totals.
  3. Report amounts in account 414, Other Utility Operating Income, in the same manner as accounts 412 and 413 above.
  4. Use page 122 for important notes regarding the statement of income for any account thereof.
  5. Give concise explanations concerning unsettled rate proceedings where a contingency exists such that refunds of a material amount may need to be made to the utility's customers or which may result in material refund to the utility with respect to power or gas purchases. State for each year effected the gross revenues or costs to which the contingency relates and the tax effects together with an explanation of the major factors which affect the rights of the utility to retain such revenues or recover amounts paid with respect to power or gas purchases.
  6. Give concise explanations concerning significant amounts of any refunds made or received during the year resulting from settlement of any rate proceeding affecting revenues received or costs incurred for power or gas purchases, and a summary of the adjustments made to balance sheet, income, and expense accounts.
  7. If any notes appearing in the report to stockholders are applicable to the Statement of Income, such notes may be included at page 122.
  8. Enter on page 122 a concise explanation of only those changes in accounting methods made during the year which had an effect on net income, including the basis of allocations and apportionments from those used in the preceding year. Also, give the appropriate dollar effect of such changes.
  9. Explain in a footnote if the previous year's/quarter's figures are different from that reported in prior reports.
  10. If the columns are insufficient for reporting additional utility departments, supply the appropriate account titles report the information in a footnote to this schedule.
Line No.
Title of Account
(a)
(Ref.) Page No.
(b)
Total Current Year to Date Balance for Quarter/Year
(c)
Total Prior Year to Date Balance for Quarter/Year
(d)
Current 3 Months Ended - Quarterly Only - No 4th Quarter
(e)
Prior 3 Months Ended - Quarterly Only - No 4th Quarter
(f)
Electric Utility Current Year to Date (in dollars)
(g)
Electric Utility Previous Year to Date (in dollars)
(h)
Gas Utiity Current Year to Date (in dollars)
(i)
Gas Utility Previous Year to Date (in dollars)
(j)
Other Utility Current Year to Date (in dollars)
(k)
Other Utility Previous Year to Date (in dollars)
(l)
1
UtilityOperatingIncomeAbstract
UTILITY OPERATING INCOME
2
OperatingRevenues
Operating Revenues (400)
300
398,700,657
343,871,348
398,700,657
343,871,348
3
OperatingExpensesAbstract
Operating Expenses
4
OperationExpense
Operation Expenses (401)
320
63,306,583
63,392,310
63,306,583
63,392,310
5
MaintenanceExpense
Maintenance Expenses (402)
320
50,711,908
49,233,272
50,711,908
49,233,272
6
DepreciationExpense
Depreciation Expense (403)
336
63,048,000
52,957,488
63,048,000
52,957,488
7
DepreciationExpenseForAssetRetirementCosts
Depreciation Expense for Asset Retirement Costs (403.1)
336
228
228
228
228
8
AmortizationAndDepletionOfUtilityPlant
Amort. & Depl. of Utility Plant (404-405)
336
5,782,015
4,822,472
5,782,015
4,822,472
9
AmortizationOfElectricPlantAcquisitionAdjustments
Amort. of Utility Plant Acq. Adj. (406)
336
10
AmortizationOfPropertyLossesUnrecoveredPlantAndRegulatoryStudyCosts
Amort. Property Losses, Unrecov Plant and Regulatory Study Costs (407)
11
AmortizationOfConversionExpenses
Amort. of Conversion Expenses (407.2)
12
RegulatoryDebits
Regulatory Debits (407.3)
597,247
597,247
597,247
597,247
13
RegulatoryCredits
(Less) Regulatory Credits (407.4)
14
TaxesOtherThanIncomeTaxesUtilityOperatingIncome
Taxes Other Than Income Taxes (408.1)
262
784,846
800,548
784,846
800,548
15
IncomeTaxesOperatingIncome
Income Taxes - Federal (409.1)
262
124,184
4,269,934
124,184
4,269,934
16
IncomeTaxesUtilityOperatingIncomeOther
Income Taxes - Other (409.1)
262
1,124,582
138,309
1,124,582
138,309
17
ProvisionsForDeferredIncomeTaxesUtilityOperatingIncome
Provision for Deferred Income Taxes (410.1)
234, 272
100,964,657
115,390,969
100,964,657
115,390,969
18
ProvisionForDeferredIncomeTaxesCreditOperatingIncome
(Less) Provision for Deferred Income Taxes-Cr. (411.1)
234, 272
54,511,667
80,238,403
54,511,667
80,238,403
19
InvestmentTaxCreditAdjustments
Investment Tax Credit Adj. - Net (411.4)
266
99,685
99,685
99,685
99,685
20
GainsFromDispositionOfPlant
(Less) Gains from Disp. of Utility Plant (411.6)
21
LossesFromDispositionOfServiceCompanyPlant
Losses from Disp. of Utility Plant (411.7)
22
GainsFromDispositionOfAllowances
(Less) Gains from Disposition of Allowances (411.8)
23
LossesFromDispositionOfAllowances
Losses from Disposition of Allowances (411.9)
24
AccretionExpense
Accretion Expense (411.10)
8,629
8,102
8,629
8,102
25
UtilityOperatingExpenses
TOTAL Utility Operating Expenses (Enter Total of lines 4 thru 24)
229,343,995
210,996,173
229,343,995
210,996,173
27
NetUtilityOperatingIncome
Net Util Oper Inc (Enter Tot line 2 less 25)
169,356,662
132,875,175
169,356,662
132,875,175
28
OtherIncomeAndDeductionsAbstract
Other Income and Deductions
29
OtherIncomeAbstract
Other Income
30
NonutilityOperatingIncomeAbstract
Nonutilty Operating Income
31
RevenuesFromMerchandisingJobbingAndContractWork
Revenues From Merchandising, Jobbing and Contract Work (415)
479,638
534,361
32
CostsAndExpensesOfMerchandisingJobbingAndContractWork
(Less) Costs and Exp. of Merchandising, Job. & Contract Work (416)
992
33
RevenuesFromNonutilityOperations
Revenues From Nonutility Operations (417)
34
ExpensesOfNonutilityOperations
(Less) Expenses of Nonutility Operations (417.1)
35
NonoperatingRentalIncome
Nonoperating Rental Income (418)
36
EquityInEarningsOfSubsidiaryCompanies
Equity in Earnings of Subsidiary Companies (418.1)
119
37
InterestAndDividendIncome
Interest and Dividend Income (419)
8,278,405
4,211,544
38
AllowanceForOtherFundsUsedDuringConstruction
Allowance for Other Funds Used During Construction (419.1)
12,677,953
14,674,073
39
MiscellaneousNonoperatingIncome
Miscellaneous Nonoperating Income (421)
208,722
708,433
40
GainOnDispositionOfProperty
Gain on Disposition of Property (421.1)
41
OtherIncome
TOTAL Other Income (Enter Total of lines 31 thru 40)
21,644,718
20,127,419
42
OtherIncomeDeductionsAbstract
Other Income Deductions
43
LossOnDispositionOfProperty
Loss on Disposition of Property (421.2)
13
44
MiscellaneousAmortization
Miscellaneous Amortization (425)
45
Donations
Donations (426.1)
7,444
64,236
46
LifeInsurance
Life Insurance (426.2)
379,793
467,114
47
Penalties
Penalties (426.3)
1
60,754
48
ExpendituresForCertainCivicPoliticalAndRelatedActivities
Exp. for Certain Civic, Political & Related Activities (426.4)
430
7,571
49
OtherDeductions
Other Deductions (426.5)
878,538
7,484,888
50
OtherIncomeDeductions
TOTAL Other Income Deductions (Total of lines 43 thru 49)
506,620
8,084,576
51
TaxesApplicableToOtherIncomeAndDeductionsAbstract
Taxes Applic. to Other Income and Deductions
52
TaxesOtherThanIncomeTaxesOtherIncomeAndDeductions
Taxes Other Than Income Taxes (408.2)
262
53
IncomeTaxesFederal
Income Taxes-Federal (409.2)
262
1,397,353
955,894
54
IncomeTaxesOther
Income Taxes-Other (409.2)
262
657,291
505,202
55
ProvisionForDeferredIncomeTaxesOtherIncomeAndDeductions
Provision for Deferred Inc. Taxes (410.2)
234, 272
56
ProvisionForDeferredIncomeTaxesCreditOtherIncomeAndDeductions
(Less) Provision for Deferred Income Taxes-Cr. (411.2)
234, 272
57
InvestmentTaxCreditAdjustmentsNonutilityOperations
Investment Tax Credit Adj.-Net (411.5)
58
InvestmentTaxCredits
(Less) Investment Tax Credits (420)
59
TaxesOnOtherIncomeAndDeductions
TOTAL Taxes on Other Income and Deductions (Total of lines 52-58)
2,054,644
1,461,096
60
NetOtherIncomeAndDeductions
Net Other Income and Deductions (Total of lines 41, 50, 59)
19,083,454
10,581,747
61
InterestChargesAbstract
Interest Charges
62
InterestOnLongTermDebt
Interest on Long-Term Debt (427)
41,690,222
33,725,000
63
AmortizationOfDebtDiscountAndExpense
Amort. of Debt Disc. and Expense (428)
831,451
731,145
64
AmortizationOfLossOnReacquiredDebt
Amortization of Loss on Reaquired Debt (428.1)
65
AmortizationOfPremiumOnDebtCredit
(Less) Amort. of Premium on Debt-Credit (429)
2,055,484
2,055,484
66
AmortizationOfGainOnReacquiredDebtCredit
(Less) Amortization of Gain on Reaquired Debt-Credit (429.1)
67
InterestOnDebtToAssociatedCompanies
Interest on Debt to Assoc. Companies (430)
1,590,177
269,901
68
OtherInterestExpense
Other Interest Expense (431)
1,375,431
1,228,786
69
AllowanceForBorrowedFundsUsedDuringConstructionCredit
(Less) Allowance for Borrowed Funds Used During Construction-Cr. (432)
5,703,917
3,638,137
70
NetInterestCharges
Net Interest Charges (Total of lines 62 thru 69)
37,727,880
30,261,211
71
IncomeBeforeExtraordinaryItems
Income Before Extraordinary Items (Total of lines 27, 60 and 70)
150,712,236
113,195,711
72
ExtraordinaryItemsAbstract
Extraordinary Items
73
ExtraordinaryIncome
Extraordinary Income (434)
74
ExtraordinaryDeductions
(Less) Extraordinary Deductions (435)
75
NetExtraordinaryItems
Net Extraordinary Items (Total of line 73 less line 74)
76
IncomeTaxesExtraordinaryItems
Income Taxes-Federal and Other (409.3)
262
0
77
ExtraordinaryItemsAfterTaxes
Extraordinary Items After Taxes (line 75 less line 76)
78
NetIncomeLoss
Net Income (Total of line 71 and 77)
150,712,236
113,195,711


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report


End of:
2023
/
Q4
STATEMENT OF RETAINED EARNINGS
  1. Do not report Lines 49-53 on the quarterly report.
  2. Report all changes in appropriated retained earnings, unappropriated retained earnings, and unappropriated undistributed subsidiary earnings for the year.
  3. Each credit and debit during the year should be identified as to the retained earnings account in which recorded (Accounts 433, 436-439 inclusive). Show the contra primary account affected in column (b).
  4. State the purpose and amount for each reservation or appropriation of retained earnings.
  5. List first Account 439, Adjustments to Retained Earnings, reflecting adjustments to the opening balance of retained earnings. Follow by credit, then debit items, in that order.
  6. Show dividends for each class and series of capital stock.
  7. Show separately the State and Federal income tax effect of items shown for Account 439, Adjustments to Retained Earnings.
  8. Explain in a footnote the basis for determining the amount reserved or appropriated. If such reservation or appropriation is to be recurrent, state the number and annual amounts to be reserved or appropriated as well as the totals eventually to be accumulated.
  9. If any notes appearing in the report to stockholders are applicable to this statement, attach them at page 122.
Line No.
Item
(a)
Contra Primary Account Affected
(b)
Current Quarter/Year Year to Date Balance
(c)
Previous Quarter/Year Year to Date Balance
(d)
UnappropriatedRetainedEarningsAbstract
UNAPPROPRIATED RETAINED EARNINGS (Account 216)
1
UnappropriatedRetainedEarnings
Balance-Beginning of Period
12,803,996
9,608,285
2
ChangesAbstract
Changes
3
AdjustmentsToRetainedEarningsAbstract
Adjustments to Retained Earnings (Account 439)
4
AdjustmentsToRetainedEarningsCreditAbstract
Adjustments to Retained Earnings Credit
9
AdjustmentsToRetainedEarningsCredit
TOTAL Credits to Retained Earnings (Acct. 439)
10
AdjustmentsToRetainedEarningsDebitAbstract
Adjustments to Retained Earnings Debit
15
AdjustmentsToRetainedEarningsDebit
TOTAL Debits to Retained Earnings (Acct. 439)
16
BalanceTransferredFromIncome
Balance Transferred from Income (Account 433 less Account 418.1)
150,712,236
113,195,711
17
AppropriationsOfRetainedEarningsAbstract
Appropriations of Retained Earnings (Acct. 436)
22
AppropriationsOfRetainedEarnings
TOTAL Appropriations of Retained Earnings (Acct. 436)
23
DividendsDeclaredPreferredStockAbstract
Dividends Declared-Preferred Stock (Account 437)
29
DividendsDeclaredPreferredStock
TOTAL Dividends Declared-Preferred Stock (Acct. 437)
30
DividendsDeclaredCommonStockAbstract
Dividends Declared-Common Stock (Account 438)
30.1
DividendsDeclaredCommonStock
Dividends
154,000,000
110,000,000
36
DividendsDeclaredCommonStock
TOTAL Dividends Declared-Common Stock (Acct. 438)
154,000,000
110,000,000
37
TransfersFromUnappropriatedUndistributedSubsidiaryEarnings
Transfers from Acct 216.1, Unapprop. Undistrib. Subsidiary Earnings
38
UnappropriatedRetainedEarnings
Balance - End of Period (Total 1,9,15,16,22,29,36,37)
9,516,232
12,803,996
39
AppropriatedRetainedEarningsAbstract
APPROPRIATED RETAINED EARNINGS (Account 215)
45
AppropriatedRetainedEarnings
TOTAL Appropriated Retained Earnings (Account 215)
AppropriatedRetainedEarningsAmortizationReserveFederalAbstract
APPROP. RETAINED EARNINGS - AMORT. Reserve, Federal (Account 215.1)
46
AppropriatedRetainedEarningsAmortizationReserveFederal
TOTAL Approp. Retained Earnings-Amort. Reserve, Federal (Acct. 215.1)
47
AppropriatedRetainedEarningsIncludingReserveAmortization
TOTAL Approp. Retained Earnings (Acct. 215, 215.1) (Total 45,46)
48
RetainedEarnings
TOTAL Retained Earnings (Acct. 215, 215.1, 216) (Total 38, 47) (216.1)
9,516,232
12,803,996
UnappropriatedUndistributedSubsidiaryEarningsAbstract
UNAPPROPRIATED UNDISTRIBUTED SUBSIDIARY EARNINGS (Account Report only on an Annual Basis, no Quarterly)
49
UnappropriatedUndistributedSubsidiaryEarnings
Balance-Beginning of Year (Debit or Credit)
50
EquityInEarningsOfSubsidiaryCompanies
Equity in Earnings for Year (Credit) (Account 418.1)
51
DividendsReceived
(Less) Dividends Received (Debit)
52
ChangesUnappropriatedUndistributedSubsidiaryEarningsCredits
TOTAL other Changes in unappropriated undistributed subsidiary earnings for the year
53
UnappropriatedUndistributedSubsidiaryEarnings
Balance-End of Year (Total lines 49 thru 52)


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
STATEMENT OF CASH FLOWS
  1. Codes to be used:(a) Net Proceeds or Payments;(b)Bonds, debentures and other long-term debt; (c) Include commercial paper; and (d) Identify separately such items as investments, fixed assets, intangibles, etc.
  2. Information about noncash investing and financing activities must be provided in the Notes to the Financial statements. Also provide a reconciliation between "Cash and Cash Equivalents at End of Period" with related amounts on the Balance Sheet.
  3. Operating Activities - Other: Include gains and losses pertaining to operating activities only. Gains and losses pertaining to investing and financing activities should be reported in those activities. Show in the Notes to the Financials the amounts of interest paid (net of amount capitalized) and income taxes paid.
  4. Investing Activities: Include at Other (line 31) net cash outflow to acquire other companies. Provide a reconciliation of assets acquired with liabilities assumed in the Notes to the Financial Statements. Do not include on this statement the dollar amount of leases capitalized per the USofA General Instruction 20; instead provide a reconciliation of the dollar amount of leases capitalized with the plant cost.
Line No.
Description (See Instructions No.1 for explanation of codes)
(a)
Current Year to Date Quarter/Year
(b)
Previous Year to Date Quarter/Year
(c)
1
NetCashFlowFromOperatingActivitiesAbstract
Net Cash Flow from Operating Activities
2
NetIncomeLoss
Net Income (Line 78(c) on page 117)
150,712,236
113,195,711
3
NoncashChargesCreditsToIncomeAbstract
Noncash Charges (Credits) to Income:
4
DepreciationAndDepletion
Depreciation and Depletion
68,838,872
57,788,290
5
NoncashAdjustmentsToCashFlowsFromOperatingActivities
Amortization of (Specify) (footnote details)
5.1
NoncashAdjustmentsToCashFlowsFromOperatingActivitiesDescription
Amortization (Deferral) of Regulatory Assets, Net
597,247
597,247
5.2
NoncashAdjustmentsToCashFlowsFromOperatingActivitiesDescription
Over/Under Recovery of Revenue from PJM
41,127,402
3,457,726
5.3
NoncashAdjustmentsToCashFlowsFromOperatingActivitiesDescription
Pension and OPEB Mark-to-Market Adjustment
9,129,057
3,981,926
8
DeferredIncomeTaxesNet
Deferred Income Taxes (Net)
46,452,990
35,152,566
9
InvestmentTaxCreditAdjustmentsNet
Investment Tax Credit Adjustment (Net)
99,685
99,685
10
NetIncreaseDecreaseInReceivablesOperatingActivities
Net (Increase) Decrease in Receivables
551,267
339,065
11
NetIncreaseDecreaseInInventoryOperatingActivities
Net (Increase) Decrease in Inventory
12
NetIncreaseDecreaseInAllowancesInventoryOperatingActivities
Net (Increase) Decrease in Allowances Inventory
13
NetIncreaseDecreaseInPayablesAndAccruedExpensesOperatingActivities
Net Increase (Decrease) in Payables and Accrued Expenses
3,339,598
14,875,013
14
NetIncreaseDecreaseInOtherRegulatoryAssetsOperatingActivities
Net (Increase) Decrease in Other Regulatory Assets
15
NetIncreaseDecreaseInOtherRegulatoryLiabilitiesOperatingActivities
Net Increase (Decrease) in Other Regulatory Liabilities
16
AllowanceForOtherFundsUsedDuringConstructionOperatingActivities
(Less) Allowance for Other Funds Used During Construction
12,677,953
14,674,073
17
UndistributedEarningsFromSubsidiaryCompaniesOperatingActivities
(Less) Undistributed Earnings from Subsidiary Companies
18
OtherAdjustmentsToCashFlowsFromOperatingActivities
Other (provide details in footnote):
18.1
OtherAdjustmentsToCashFlowsFromOperatingActivitiesDescription
Other (provide details in footnote):
(a)
5,743,341
(d)
1,434,084
22
NetCashFlowFromOperatingActivities
Net Cash Provided by (Used in) Operating Activities (Total of Lines 2 thru 21)
213,293,690
175,836,094
24
CashFlowsFromInvestmentActivitiesAbstract
Cash Flows from Investment Activities:
25
ConstructionAndAcquisitionOfPlantIncludingLandAbstract
Construction and Acquisition of Plant (including land):
26
GrossAdditionsToUtilityPlantLessNuclearFuelInvestingActivities
Gross Additions to Utility Plant (less nuclear fuel)
492,975,491
397,139,579
27
GrossAdditionsToNuclearFuelInvestingActivities
Gross Additions to Nuclear Fuel
28
GrossAdditionsToCommonUtilityPlantInvestingActivities
Gross Additions to Common Utility Plant
29
GrossAdditionsToNonutilityPlantInvestingActivities
Gross Additions to Nonutility Plant
30
AllowanceForOtherFundsUsedDuringConstructionInvestingActivities
(Less) Allowance for Other Funds Used During Construction
12,677,953
14,674,073
31
OtherConstructionAndAcquisitionOfPlantInvestmentActivities
Other (provide details in footnote):
31.1
OtherConstructionAndAcquisitionOfPlantInvestmentActivitiesDescription
Other (provide details in footnote):
34
CashOutflowsForPlant
Cash Outflows for Plant (Total of lines 26 thru 33)
480,297,538
382,465,506
36
AcquisitionOfOtherNoncurrentAssets
Acquisition of Other Noncurrent Assets (d)
37
ProceedsFromDisposalOfNoncurrentAssets
Proceeds from Disposal of Noncurrent Assets (d)
39
InvestmentsInAndAdvancesToAssociatedAndSubsidiaryCompanies
Investments in and Advances to Assoc. and Subsidiary Companies
40
ContributionsAndAdvancesFromAssociatedAndSubsidiaryCompanies
Contributions and Advances from Assoc. and Subsidiary Companies
41
DispositionOfInvestmentsInAndAdvancesToAssociatedAndSubsidiaryCompaniesAbstract
Disposition of Investments in (and Advances to)
42
DispositionOfInvestmentsInAndAdvancesToAssociatedAndSubsidiaryCompanies
Disposition of Investments in (and Advances to) Associated and Subsidiary Companies
44
PurchaseOfInvestmentSecurities
Purchase of Investment Securities (a)
45
ProceedsFromSalesOfInvestmentSecurities
Proceeds from Sales of Investment Securities (a)
46
LoansMadeOrPurchased
Loans Made or Purchased
47
CollectionsOnLoans
Collections on Loans
49
NetIncreaseDecreaseInReceivablesInvestingActivities
Net (Increase) Decrease in Receivables
50
NetIncreaseDecreaseInInventoryInvestingActivities
Net (Increase) Decrease in Inventory
51
NetIncreaseDecreaseInAllowancesHeldForSpeculationInvestingActivities
Net (Increase) Decrease in Allowances Held for Speculation
52
NetIncreaseDecreaseInPayablesAndAccruedExpensesInvestingActivities
Net Increase (Decrease) in Payables and Accrued Expenses
53
OtherAdjustmentsToCashFlowsFromInvestmentActivities
Other (provide details in footnote):
53.1
OtherAdjustmentsToCashFlowsFromInvestmentActivitiesDescription
Asset Removal Costs
39,021,315
27,129,940
53.2
OtherAdjustmentsToCashFlowsFromInvestmentActivitiesDescription
Other (provide details in footnote):
(b)
140,374
(e)
416,790
57
CashFlowsProvidedFromUsedInInvestmentActivities
Net Cash Provided by (Used in) Investing Activities (Total of lines 34 thru 55)
519,178,479
410,012,236
59
CashFlowsFromFinancingActivitiesAbstract
Cash Flows from Financing Activities:
60
ProceedsFromIssuanceAbstract
Proceeds from Issuance of:
61
ProceedsFromIssuanceOfLongTermDebtFinancingActivities
Long-Term Debt (b)
175,000,000
62
ProceedsFromIssuanceOfPreferredStockFinancingActivities
Preferred Stock
63
ProceedsFromIssuanceOfCommonStockFinancingActivities
Common Stock
64
OtherAdjustmentsToCashFlowsFromFinancingActivities
Other (provide details in footnote):
64.1
OtherAdjustmentsToCashFlowsFromFinancingActivitiesDescription
Other (provide details in footnote):
64.2
OtherAdjustmentsToCashFlowsFromFinancingActivitiesDescription
Equity Contribution from Parent
275,000,000
40,000,000
66
NetIncreaseInShortTermDebt
Net Increase in Short-Term Debt (c)
11,273,534
104,186,530
67
OtherAdjustmentsByOutsideSourcesToCashFlowsFromFinancingActivities
Other (provide details in footnote):
67.1
DescriptionForOtherAdjustmentsByOutsideSourcesToCashFlowsFromFinancingActivities
Other (provide details in footnote):
67.2
DescriptionForOtherAdjustmentsByOutsideSourcesToCashFlowsFromFinancingActivities
Premiums on Long-Term Debt
70
CashProvidedByOutsideSources
Cash Provided by Outside Sources (Total 61 thru 69)
461,273,534
144,186,530
72
PaymentsForRetirementAbstract
Payments for Retirement of:
73
PaymentsForRetirementOfLongTermDebtFinancingActivities
Long-term Debt (b)
74
PaymentsForRetirementOfPreferredStockFinancingActivities
Preferred Stock
75
PaymentsForRetirementOfCommonStockFinancingActivities
Common Stock
76
OtherRetirementsOfBalancesImpactingCashFlowsFromFinancingActivities
Other (provide details in footnote):
76.1
DescriptionOfOtherRetirementsImpactingCashFlowsFromFinancingActivities
Other (provide details in footnote):
(c)
1,388,745
(f)
10,388
78
NetDecreaseInShortTermDebt
Net Decrease in Short-Term Debt (c)
80
DividendsOnPreferredStock
Dividends on Preferred Stock
81
DividendsOnCommonStock
Dividends on Common Stock
154,000,000
110,000,000
83
CashFlowsProvidedFromUsedInFinancingActivities
Net Cash Provided by (Used in) Financing Activities (Total of lines 70 thru 81)
305,884,789
34,176,142
85
NetIncreaseDecreaseInCashAndCashEquivalentsAbstract
Net Increase (Decrease) in Cash and Cash Equivalents
86
NetIncreaseDecreaseInCashAndCashEquivalents
Net Increase (Decrease) in Cash and Cash Equivalents (Total of line 22, 57 and 83)
200,000,000
88
CashAndCashEquivalents
Cash and Cash Equivalents at Beginning of Period
200,000,000
90
CashAndCashEquivalents
Cash and Cash Equivalents at End of Period


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
FOOTNOTE DATA

(a) Concept: OtherAdjustmentsToCashFlowsFromOperatingActivities
Schedule Page: 120 Line No.: 18 Column: b
Other Operating:
This line item represents various other operating activities not presented as a separate line item
(b) Concept: OtherAdjustmentsToCashFlowsFromInvestmentActivities
Schedule Page: 120 Line No.: 53 Column: b
Other Investing:
This line item represents various other investing activities not presented as a separate line item
(c) Concept: OtherRetirementsOfBalancesImpactingCashFlowsFromFinancingActivities
Schedule Page: 120 Line No.: 76 Column: b
Other Financing:
This line item represents various other financing activities not presented as a separate line item
(d) Concept: OtherAdjustmentsToCashFlowsFromOperatingActivities
Schedule Page: 120 Line No.: 18 Column: c
Other Operating:
This line item represents various other operating activities not presented as a separate line item
(e) Concept: OtherAdjustmentsToCashFlowsFromInvestmentActivities
Schedule Page: 120 Line No.: 53 Column: c
Other Investing:
This line item represents various other investing activities not presented as a separate line item
(f) Concept: OtherRetirementsOfBalancesImpactingCashFlowsFromFinancingActivities
Schedule Page: 120 Line No.: 76 Column: c
Other Financing:
This line item represents various other financing activities not presented as a separate line item

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
NOTES TO FINANCIAL STATEMENTS
  1. Use the space below for important notes regarding the Balance Sheet, Statement of Income for the year, Statement of Retained Earnings for the year, and Statement of Cash Flows, or any account thereof. Classify the notes according to each basic statement, providing a subheading for each statement except where a note is applicable to more than one statement.
  2. Furnish particulars (details) as to any significant contingent assets or liabilities existing at end of year, including a brief explanation of any action initiated by the Internal Revenue Service involving possible assessment of additional income taxes of material amount, or of a claim for refund of income taxes of a material amount initiated by the utility. Give also a brief explanation of any dividends in arrears on cumulative preferred stock.
  3. For Account 116, Utility Plant Adjustments, explain the origin of such amount, debits and credits during the year, and plan of disposition contemplated, giving references to Commission orders or other authorizations respecting classification of amounts as plant adjustments and requirements as to disposition thereof.
  4. Where Accounts 189, Unamortized Loss on Reacquired Debt, and 257, Unamortized Gain on Reacquired Debt, are not used, give an explanation, providing the rate treatment given these items. See General Instruction 17 of the Uniform System of Accounts.
  5. Give a concise explanation of any retained earnings restrictions and state the amount of retained earnings affected by such restrictions.
  6. If the notes to financial statements relating to the respondent company appearing in the annual report to the stockholders are applicable and furnish the data required by instructions above and on pages 114-121, such notes may be included herein.
  7. For the 3Q disclosures, respondent must provide in the notes sufficient disclosures so as to make the interim information not misleading. Disclosures which would substantially duplicate the disclosures contained in the most recent FERC Annual Report may be omitted.
  8. For the 3Q disclosures, the disclosures shall be provided where events subsequent to the end of the most recent year have occurred which have a material effect on the respondent. Respondent must include in the notes significant changes since the most recently completed year in such items as: accounting principles and practices; estimates inherent in the preparation of the financial statements; status of long-term contracts; capitalization including significant new borrowings or modifications of existing financing agreements; and changes resulting from business combinations or dispositions. However were material contingencies exist, the disclosure of such matters shall be provided even though a significant change since year end may not have occurred.
  9. Finally, if the notes to the financial statements relating to the respondent appearing in the annual report to the stockholders are applicable and furnish the data required by the above instructions, such notes may be included herein.
GLOSSARY OF TERMS

The following abbreviations and acronyms may be used in these financial statements to identify Mid-Atlantic Interstate Transmission, LLC and its current and former affiliated companies:

AGCAllegheny Generating Company, a generation subsidiary of MP
ATSIAmerican Transmission Systems, Incorporated, a transmission subsidiary of FET
CEIThe Cleveland Electric Illuminating Company, an Ohio electric utility subsidiary of FE
FEFirstEnergy Corp., a public utility holding company
FE PAFirstEnergy Pennsylvania Electric Company, a Pennsylvania electric utility subsidiary of FirstEnergy Pennsylvania Holding Company LLC, a wholly owned subsidiary of FE
FESEnergy Harbor LLC (formerly known as FirstEnergy Solutions Corp.), a subsidiary of EH, which provides energy-related products and services
FESCFirstEnergy Service Company, which provides legal, financial and other corporate support services
FETFirstEnergy Transmission, LLC a consolidated VIE of FE and the parent company of ATSI, MAIT and TrAIL, and having a joint venture in PATH
FirstEnergyFirstEnergy Corp., together with its consolidated subsidiaries
JCP&LJersey Central Power & Light Company, a New Jersey electric utility subsidiary of FE
KATCoKeystone Appalachian Transmission Company, a transmission subsidiary of FE
MAITMid-Atlantic Interstate Transmission, LLC, a transmission subsidiary of FET
MEMetropolitan Edison Company, a former Pennsylvania electric utility subsidiary of FE, which merged with and into FE PA on January 1, 2024
MPMonongahela Power Company, a West Virginia electric utility subsidiary of FE
OEOhio Edison Company, an Ohio electric utility subsidiary of FE
Ohio CompaniesCEI, OE and TE
PATHPotomac-Appalachian Transmission Highline, LLC, a joint venture between FE and a subsidiary of AEP
PEThe Potomac Edison Company, a Maryland and West Virginia electric utility subsidiary of FE
PennPennsylvania Power Company, a former Pennsylvania electric utility subsidiary of OE, which merged with and into FE PA on January 1, 2024
Pennsylvania CompaniesME, PN, Penn and WP, each of which merged with and into FE PA on January 1, 2024
PNPennsylvania Electric Company, a former Pennsylvania electric utility subsidiary of FE, which merged with and into FE PA on January 1, 2024
TEThe Toledo Edison Company, an Ohio electric utility subsidiary of FE
TrAILTrans-Allegheny Interstate Line Company, a transmission subsidiary of FET
Transmission CompaniesATSI, KATCo, MAIT and TrAIL
UtilitiesOE, CEI, TE, Penn, JCP&L, ME, PN, MP, PE and WP
WPWest Penn Power Company, a former Pennsylvania electric utility subsidiary of FE, which merged with and into FE PA on January 1, 2024
The following abbreviations and acronyms may be used to identify frequently used terms in these financial statements:
2021 Credit FacilitiesCollectively, the six separate senior unsecured five-year syndicated revolving credit facilities entered into by FE, FET, the Utilities, and the Transmission Companies, on October 18, 2021
2023 Credit FacilitiesCollectively, the FET Revolving Facility and KATCo Revolving Facility
A&R FET LLC AgreementFourth Amended and Restated Limited Liability Company Operating Agreement of FET
ACEAffordable Clean Energy
AEPAmerican Electric Power Company, Inc.
AFSAvailable-for-sale
AFSIAdjusted Financial Statement Income
AFUDCAllowance for Funds Used During Construction
AMIAdvance Metering Infrastructure
AMTAlternative Minimum Tax
AOCIAccumulated Other Comprehensive Income (Loss)
AROAsset Retirement Obligation
ASCAccounting Standards Codification
ASUAccounting Standards Update
BGSBasic Generation Service
BRABase Residual Auction
BrookfieldNorth American Transmission Company II L.P., a controlled investment vehicle entity of Brookfield Infrastructure Partners
Brookfield GuarantorsBrookfield Super-Core Infrastructure Partners L.P., Brookfield Super-Core Infrastructure Partners (NUS) L.P., and Brookfield Super-Core Infrastructure Partners (ER) SCSp
CAAClean Air Act
CCRCoal Combustion Residual
CERCLAComprehensive Environmental Response, Compensation, and Liability Act of 1980
CFIUSCommittee on Foreign Investments in the United States
CFRCode of Federal Regulations
CO2Carbon Dioxide
COVID-19Coronavirus disease
CPPEPA's Clean Power Plan
CSAPRCross-State Air Pollution Rule
CTAConsolidated Tax Adjustments
D.C. CircuitUnited States Court of Appeals for the District of Columbia Circuit
DCRDelivery Capital Recovery
DMRDistribution Modernization Rider
DPADeferred Prosecution Agreement entered into on July 21, 2021 between FE and U.S. Attorney's Office for the Southern District of Ohio
DSICDistribution System Improvement Charge
EDCElectric Distribution Company
EEIEdison Electric Institute
EE&C IJCP&L's Energy Efficiency and Conservation Program I
EE&C IIJCP&L's Energy Efficiency and Conservation Program II
EGSElectric Generation Supplier
EGUElectric Generation Units
EHEnergy Harbor Corp
ELGEffluent Limitation Guidelines
EmPOWER MarylandEmPOWER Maryland Energy Efficiency Act
ENECExpanded Net Energy Cost
EnergizeNJJCP&L's second Infrastructure Investment Program
EPAUnited States Environmental Protection Agency
EROElectric Reliability Organization
EROElectric Reliability Organization
ESP IVElectric Security Plan IV
ESP VElectric Security Plan V
Exchange ActSecurities and Exchange Act of 1934, as amended
FACFacility Study
FASBFinancial Accounting Standards Board
FCAFinancial Conduct Authority
FE BoardThe Board of Directors of FirstEnergy Corp.
FE Revolving FacilityFE and the Utilities’ former five-year syndicated revolving credit facility, as amended, and replaced by the 2021 Credit Facilities on October 18, 2021
FEASFeasibility Study
FERCFederal Energy Regulatory Commission
FET BoardThe Board of Directors of FET
FET LLC AgreementThird Amended and Restated Limited Liability Company Operating Agreement of FET
FET Minority Equity Interest SaleSale of an additional 30% membership interest of FET, such that Brookfield will own 49.9% of FET
FET P&SA IPurchase and Sale Agreement entered into on November 6, 2021, by and between FE, FET, Brookfield, and Brookfield Guarantors
FET P&SA IIPurchase and Sale Agreement entered into on February 2, 2023, by and between FE, FET, Brookfield, and the Brookfield Guarantors
FET Revolving FacilityFET’s five-year syndicated revolving credit facility, dated as of October 20, 2023
FitchFitch Ratings Service
FMBFirst Mortgage Bond
FPAFederal Power Act
FTRFinancial Transmission Right
GAAPAccounting Principles Generally Accepted in the United States of America
GHGGreenhouse Gases
HB 6House Bill 6, as passed by Ohio's 133rd General Assembly
IRA of 2022Inflation Reduction Act of 2022
IRSInternal Revenue Service
KATCo Revolving FacilityKATCo's four-year syndicated revolving credit facility, dated as of October 20, 2023
kVKilovolt
kWhKilowatt-hour
LIBORLondon Inter-Bank Offered Rate
LOCLetter of Credit
LTIIPLong-Term Infrastructure Improvement Plan
MDPSCMaryland Public Service Commission
MGPManufactured Gas Plants
MISOMidcontinent Independent System Operator, Inc.
Moody'sMoody's Investors Service, Inc.
MWMegawatt
MWhMegawatt-hour
N.D. OhioFederal District Court, Northern District of Ohio
NERCNorth American Electric Reliability Corporation
NJBPUNew Jersey Board of Public Utilities
NOLNet Operating Loss
NOxNitrogen Oxide
NUGNon-Utility Generation
NYPSCNew York State Public Service Commission
OAGOhio Attorney General
OCCOhio Consumers' Counsel
ODSAOhio Development Service Agency
Ohio StipulationStipulation and Recommendation, dated November 1, 2021, entered into by and among the Ohio Companies, the OCC, PUCO Staff, and several other signatories
OOCICOhio Organized Crime Investigations Commission, which is composed of members of the Ohio law enforcement community and is chaired by the OAG
OPEBOther Post-employment Benefits
OVECOhio Valley Electric Corporation
PA ConsolidationConsolidation of the Pennsylvania Companies
PEERFirstEnergy's Program for Enhanced Employee Retirement
PJMPJM Interconnection, LLC
PJM TariffPJM Open Access Transmission Tariff
PJM RegionThe territory that PJM coordinates the movement of electricity through, including all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia.
POLRProvider of Last Resort
PPAPurchase Power Agreement
PPUCPennsylvania Public Utility Commission
PUCOPublic Utilities Commission of Ohio
RFCReliabilityFirst Corporation
ROEReturn on Equity
RTORegional Transmission Organization
S&PStandard & Poor's Ratings Service
S.D. OhioFederal District Court, Southern District of Ohio
SECUnited States Securities and Exchange Commission
SIPState Implementation Plan(s) under the Clean Air Act
SEETSignificantly Excessive Earnings Test
SISSystem Impact Study
SLCSpecial Litigation Committee of the FE Board
SO2Sulfur Dioxide
SOFRSecured Overnight Financing Rate
SOSStandard Offer Service
SPESpecial Purpose Entity
Tax ActTax Cuts and Jobs Act adopted December 22, 2017
TMI-1Three Mile Island Unit 1
VEPCOVirginia Electric and Power Company
VIEVariable Interest Entity
VSCCVirginia State Corporation Commission
WVPSCPublic Service Commission of West Virginia
1. ORGANIZATION, BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

MAIT is a consolidated VIE of FET, a consolidated VIE of FE. Following receipt of necessary regulatory approvals, on January 31, 2017, MAIT issued membership interests to FET, PN and ME in exchange for their respective cash and transmission asset contributions. Subsequently, on March 13, 2017, FERC issued an order authorizing MAIT to issue short- and long-term debt securities, permitting MAIT to participate in the FirstEnergy regulated companies’ money pool for working capital, to fund day-to-day operations, support capital investment and establish an actual capital structure for ratemaking purposes.

As of December 31, 2023, ME's and PN's approximate ownership of MAIT was 17% and 25%, respectively. On January 1, 2024, PN and ME contributed their respective Class B equity interests of MAIT to FE in connection with FirstEnergy consolidating the Pennsylvania Companies into FE PA, including OE subsidiary, Penn, making FE PA a new, single operating entity.

MAIT owns high-voltage transmission facilities in PJM, which consist of approximately 4,300 circuit miles of transmission lines with nominal voltages of 500 kV, 345 kV, 230 kV, 138 kV, 115 kV, 69 kV and 46 kV in Pennsylvania, and has a rate base of $2.1 billion. MAIT plans, operates, and maintains its transmission system in accordance with NERC reliability standards, and other applicable regulatory requirements. In addition, MAIT complies with the regulations, orders, policies and practices prescribed by FERC and the PPUC.

On November 6, 2021, FirstEnergy, along with FET, entered into the FET P&SA I, with Brookfield and the Brookfield Guarantors, pursuant to which FET agreed to issue and sell to Brookfield at the closing, and Brookfield agreed to purchase from FET, certain newly issued membership interests of FET, such that Brookfield would own 19.9% of the issued and outstanding membership interests of FET, for a purchase price of $2.375 billion. The transaction closed on May 31, 2022. KATCo, which was a subsidiary of FET, became a wholly owned subsidiary of FE prior to the closing of the transaction.

Pursuant to the terms of the FET P&SA I, on May 31, 2022, Brookfield, FET and FE entered into the FET LLC Agreement. The FET LLC Agreement, among other things, provides for the governance, exit, capital and distribution, and other arrangements for FET from and following the closing. Under the FET LLC Agreement, Brookfield is entitled to appoint a number of directors to the FET Board, in approximate proportion to Brookfield’s ownership percentage in FET (rounded to the next whole number). The FET Board now consists of five directors, one appointed by Brookfield and four appointed by FE. The FET LLC Agreement contains certain investor protections, including, among other things, requiring Brookfield's approval for FET and its subsidiaries to take certain major actions. Under the terms of the FET LLC Agreement, for so long as Brookfield holds a 9.9% interest in FET, Brookfield’s consent is required for FET or any of its subsidiaries to incur indebtedness (other than the refinancing of existing indebtedness on commercially reasonable terms reflecting then-current credit market conditions) that would reasonably be expected to result in FET’s consolidated Debt-to-Capital Ratio (as defined in the FET LLC Agreement) equaling or exceeding (i) prior to the fifth anniversary of the effective date, 65%, and (ii) thereafter, 70%. As discussed below, pursuant to the terms of the FET P&SA II and in connection with the closing thereof, Brookfield, FET and FE will enter into the A&R FET LLC Agreement, which will amend and restate in its entirety the FET LLC Agreement.

BASIS OF PRESENTATION

The accompanying financial statements have been prepared in accordance with FERC accounting requirements as set forth in the Uniform System of Accounts and accounting releases, which differ from GAAP. The significant differences between FERC and GAAP related to these financial statements include the following:

The current portion of long-term debt, long-term assets or long-term liabilities is not reported separately on the FERC balance sheet.
Deferred Income Taxes are recorded on a gross basis on the FERC balance sheet with deferred tax assets and deferred tax liabilities being reported separately.
For income statement purposes, there are differences in items included in Other Income and Other Income and Deductions under GAAP and FERC reporting, including costs which are recorded in operating expenses for GAAP and non-operating expenses for FERC.
Asset removal costs are classified as accumulated depreciation on the FERC balance sheet and regulatory liability for GAAP.
Regulatory assets and liabilities presented on a gross basis on the FERC balance sheet with regulatory assets and liabilities netted for GAAP.
Pension and OPEB non-service costs are reported in Operation and Maintenance expenses on the FERC income statement and within Miscellaneous income, net on the GAAP income statement.
Finance and operating leases are recorded on a net basis in Plant in Service on the FERC balance sheet.
Payments related to finance leases are included in the Operating Section of the FERC statement of cash flows and within the Financing Section of the GAAP statement of cash flows.
A corporate support overhead cost adjustment per time study results in 2022 was recorded in operating expenses for the GAAP income state and recorded below the line in Other Deductions for the FERC income statement. See Note 4, "Regulatory Matters" for additional information.

The preparation of financial statements requires management to make periodic estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities. Actual results could differ from these estimates. The reported results of operations are not indicative of results of operations for any future period.

ACCOUNTING FOR THE EFFECTS OF REGULATION

MAIT reviews the probability of recovery of regulatory assets, and settlement of regulatory liabilities, at each balance sheet date and whenever new events occur. Factors that may affect probability include changes in the regulatory environment, issuance of a regulatory commission order, or passage of new legislation. Upon material changes to these factors, where applicable, MAIT will record new regulatory assets or liabilities and will assess whether it is probable that currently recorded regulatory assets and liabilities will be recovered or settled in future rates. If recovery of a regulatory asset is no longer probable, MAIT will write off that regulatory asset as a charge against earnings.

These assets and liabilities are amortized in the Statements of Income concurrent with the recovery or refund through customer rates. MAIT believes that it is probable that its regulatory assets and liabilities will be recovered and settled, respectively, through future rates.

RECEIVABLES

Under a formula rate mechanism approved by the FERC, MAIT makes annual filings in order to recover incurred costs and an allowed return. An initial rate filing is made for each calendar year using estimated costs, which is used to determine the initial billings to customers. All prudently incurred allowable operation and maintenance costs, a return earned on rate base and an income tax allowance are recovered or refunded through a subsequent true-up mechanism. As such, MAIT recognizes revenue as it incurs recoverable costs and earns the allowed return. Any differences between revenues earned based on actual costs and the amounts billed based on estimated costs are recognized as a regulatory asset or liability and will be recovered or refunded, respectively, in subsequent periods.

PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment reflects original cost (net of any impairments recognized), including payroll and related costs such as taxes, employee benefits, administrative and general costs, and financing costs incurred to place the assets in service. The costs of normal maintenance, repairs and minor replacements are expensed as incurred. MAIT recognizes liabilities for planned major maintenance projects as they are incurred.

MAIT provides for depreciation on a straight-line basis at various rates over the estimated lives of property included in plant in service. Depreciation expense was approximately 2.4% and 2.3% of average depreciable property in 2023 and 2022, respectively.

MAIT evaluates long-lived assets classified as held and used for impairment when events or changes in circumstances indicate that the carrying value of the long-lived assets may not be recoverable. First, the estimated undiscounted future cash flows attributable to the assets is compared with the carrying value of the assets. If the carrying value is greater than the undiscounted future cash flows, an impairment charge is recognized equal to the amount the carrying value of the assets exceeds its estimated fair value.

GOODWILL

As discussed above, on January 31, 2017, MAIT issued membership interests to FET, PN and ME in exchange for their respective cash and transmission asset contributions, which included $224 million of goodwill.

In a business combination, the excess of the purchase price over the estimated fair value of the assets acquired and liabilities assumed is recognized as goodwill. Goodwill is evaluated for impairment annually on July 31 and more frequently if indicators of impairment arise. In evaluating goodwill for impairment, qualitative factors are assessed to determine whether it is more likely than not (that is, likelihood of more than 50%) that the fair value of the reporting unit is less than its carrying value (including goodwill). If it is concluded that it is not more likely than not that the fair value of the reporting unit is less than its carrying value, then no further testing is required. However, if management concludes that it is more likely than not that the fair value of the reporting unit is less than its carrying value or bypasses the qualitative assessment, then the quantitative goodwill
impairment test is performed to identify a potential goodwill impairment and measure the amount of impairment to be recognized, if any.

No impairment of goodwill was indicated in 2023 and 2022. In 2023 and 2022, a qualitative assessment was performed, assessing economic, industry and market considerations in addition to MAIT's overall performance. Key factors used in the assessment included: growth rates, interest rates, expected investments, utility sector market performance, regulatory and legal developments, and other market considerations. It was determined that the fair values of the reporting unit was, more likely than not, greater than their carrying values and a quantitative analysis was not necessary.

ECONOMIC CONDITIONS
Post-pandemic economic conditions have increased supply chain lead times across numerous material categories, with some as much as tripling from pre-pandemic lead times. Several key suppliers have struggled with labor shortages and raw material availability, which along with inflationary pressure that appears to be moderating, have increased costs and decreased the availability of certain materials, equipment and contractors. FirstEnergy has taken steps to mitigate these risks and does not currently expect service disruptions or any material impact on its capital spending plan. However, the situation remains fluid and a prolonged continuation or further increase in supply chain disruptions could have an adverse effect on FirstEnergy’s results of operations, cash flow and financial condition.

SALE OF MINORITY INTEREST IN FIRSTENERGY TRANSMISSION, LLC

On February 2, 2023, FE, along with FET, entered into the FET P&SA II with Brookfield and the Brookfield Guarantors, pursuant to which FE agreed to sell to Brookfield at the closing, and Brookfield agreed to purchase from FE, an incremental 30% equity interest in FET for a purchase price of $3.5 billion. The majority of the purchase price is expected to be paid in cash upon closing, and the remainder will be payable by the issuance of promissory notes, which are expected to be repaid by the end of 2024. As a result of the consummation of the transaction, Brookfield’s interest in FET will increase from 19.9% to 49.9%, while FE will retain the remaining 50.1% ownership interests of FET.

Pursuant to the terms of the FET P&SA II, in connection with the closing, Brookfield, FET and FE will enter into the A&R FET LLC Agreement, which will amend and restate in its entirety the current limited liability company agreement of FET. The A&R FET LLC Agreement, among other things, provides for the governance, exit, capital and distribution, and other arrangements for FET from and following the closing. Under the A&R FET LLC Agreement, at the closing, the FET Board will consist of five directors, two appointed by Brookfield and three appointed by FE. Each of Brookfield’s and FE’s respective appointment rights are subject to such party maintaining certain minimum ownership percentages. The A&R FET LLC Agreement contains certain investor protections, including, among other things, requiring Brookfield's approval for FET and its subsidiaries to take certain major actions. Under the terms of the A&R FET LLC Agreement, for so long as Brookfield holds at least a 30.0% interest in FET, Brookfield’s consent is required for FET or any of its subsidiaries to, among other things, undertake certain acquisitions or dispositions in excess of certain dollar thresholds, establish or amend the annual budget, incur cost overruns on certain capital expenditures projects during any fiscal year in excess of a certain percentage overage of the budgeted amounts or incur cost overruns on the aggregate capital expenditure budget of FET’s subsidiaries during any fiscal year in excess of a certain percentage overage of the aggregated budgeted amount, make material decisions relating to litigation where either the potential liability exposure is in excess of a certain threshold dollar amount or such proceeding would reasonably be expected to have an adverse effect on Brookfield or FET, make certain material regulatory filings, incur or refinance indebtedness by FET or its subsidiaries, which, in the case of its subsidiaries, would reasonably be expected to cause such subsidiary to deviate from its targeted capital structure, enter into joint ventures, appoint or replace any member of its transmission leadership team, amend the accounting policies of FET or its subsidiaries (but only if FirstEnergy Corp is no longer the majority owner of FET), take any action that would reasonably be expected to cause a default or breach of any material contract of FET or any of its subsidiaries, create certain material liens (excluding certain permitted liens), or cause any reorganization of FET or any of its subsidiaries. The A&R FET LLC Agreement also includes provisions relating to the resolution of disputes and to address deadlocks.

On May 5, 2023, FirstEnergy and Brookfield submitted applications to FERC and to the PPUC to facilitate the FET Minority Equity Interest Sale. On May 12, 2023, the parties also filed an application with the VSCC, which was approved on June 20, 2023. On August 14, 2023, FERC issued an order approving the FET Minority Equity Interest Sale. On November 24, 2023, CFIUS notified FET, Brookfield and the Abu Dhabi Investment Authority that it has determined that there were no unresolved national security issues and its review of the transaction was concluded. On November 29, 2023, the parties filed a settlement agreement recommending that the PPUC approve the transaction subject to the terms of the settlement, which include among other things, a number of ring-fencing provisions and a commitment to improve transmission reliability over the next five years. The settlement was approved by the PPUC on March 14, 2024. On March 25, 2024 the transaction closed. FET will continue to be consolidated in FirstEnergy’s financial statements.
NEW ACCOUNTING PRONOUNCEMENTS

Reference Rate Reform - In March of 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): “Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (issued March 2020 and subsequently updated). This ASU, which introduces Topic ASC 848 to the FASB codification, provides temporary optional expedients and exceptions that, if elected, will ease the financial reporting burdens related to the market transition from LIBOR and other interbank offered rates to alternative reference rates. On April 27, 2023, FE, FET, the Utilities and the Transmission Companies entered into amendments to the 2021 Credit Facilities to, among other things: (i) permit the sale from FE to Brookfield of an incremental 30% equity interest in FET for a purchase price of $3.5 billion, (ii) permit the consolidation of the Pennsylvania Companies into a new, single operating entity, FE PA, which will be FE’s only regulated utility in Pennsylvania encompassing the operations previously conducted individually by the Pennsylvania Companies, and (iii) transition the benchmark interest rate for borrowings under the 2021 Credit Facilities from LIBOR to SOFR. During the second quarter of 2023, FirstEnergy utilized the optional expedient within ASC 848 to account for the amendments to the credit facilities as a continuation of the existing contract without additional analysis.
2. REVENUE

MAIT accounts for revenues from contracts with customers under ASC 606, Revenue from Contracts with Customers. Revenue from leases, financial instruments, other contractual rights or obligations and other revenues that are not from contracts with customers are outside the scope of the standard and accounted for under other existing GAAP.

MAIT has elected to exclude sales taxes and other similar taxes collected on behalf of third parties from revenue as prescribed in the new standard. As a result, tax collections and remittances within the scope of this election are excluded from recognition in the income statement and instead recorded through the balance sheet. Gross receipts taxes that are assessed on MAIT are not subject to the election and are included in revenue. MAIT has elected the optional invoice practical expedient for most of its revenues and utilizes the optional short-term contract exemption for transmission revenues due to the annual establishment of revenue requirements, which eliminates the need to provide certain revenue disclosures regarding unsatisfied performance obligations.

MAIT provides transmission infrastructure owned and operated by MAIT to transmit electricity from generation sources to distribution facilities. MAIT's transmission revenue is primarily derived from forward-looking formula transmission rates. Revenue requirements under forward-looking formula rates are updated annually based on a projected rate base and projected costs, which is subject to an annual true-up based on rate base and actual costs. Revenues and cash receipts for the stand-ready obligation of providing transmission service are recognized ratably over time.
3. LEASES

MAIT primarily leases fiber optics, land and other property and equipment under cancelable and noncancelable leases. MAIT has a ground lease with ME and PN under an operating lease agreement. ME and PN reserve the right to use (and to permit authorized others to use) the land for any purpose that does not cause a violation of electrical safety code or applicable law, or does not impair MAIT's ability to satisfy its service obligations. Additional uses of such land for MAIT's facilities requires prior written approval from the applicable operating company. MAIT purchases directly any new property acquired for transmission use. MAIT makes variable quarterly lease payments through January 1, 2043, unless terminated prior to maturity, or extended by MAIT for up to two additional successive periods of 25 years each and one successive term of 24 years. MAIT's lease payment was approximately $4 million in 2023 and 2022. MAIT does not have an operating lease liability or asset associated with this agreement as the lease payments are variable.

MAIT accounts for leases under, "Leases (Topic 842)". Leases with an initial term of 12 months or less are recognized as lease expense on a straight-line basis over the lease term and not recorded on the balance sheet. Most leases include one or more, options to renew, with renewal terms that can extend the lease term from 1 to 40 years, and certain leases include options to terminate. The exercise of lease renewal options is at MAIT's sole discretion. Renewal options are included within the lease liability if they are reasonably certain based on various factors relative to the contract. Certain leases also include options to purchase the leased property. The depreciable life of leased assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain of exercise. MAIT has elected a policy to not separate lease components from non-lease components for all asset classes.

Adoption of "Leases (Topic 842)" had no impact on MAIT’s existing ratemaking treatment or FERC jurisdiction cost-of-service rates. Amounts included in the capital lease balance sheet accounts that relate to operating leases are as follows:
(in millions)20232022
Property Under Capital Lease (Account 101.1)
$1$1
Obligations Under Capital Leases - Current (Account 243)
$0$0
Obligations Under Capital Leases - Noncurrent (Account 227)
$0$0

Lease terms and discount rates were as follows:

As of December 31, 2023As of December 31, 2022
Weighted-average remaining lease terms (years)
Operating leases14.0 12.9 
Finance leases15.0 15.9 
Weighted-average discount rate (1)
Operating leases1.45 %1.45 %
(1) When an implicit rate is not readily determinable, an incremental borrowing rate is utilized, determining the present value of lease payments. The rate is determined based on expected term and information available at the commencement date.
4. REGULATORY MATTERS

FERC REGULATORY MATTERS

Under the FPA, FERC regulates rates for transmission of electric power, accounting and other matters. With respect to its transmission services and rates, MAIT is subject to regulation by FERC. FERC regulations require MAIT to provide open access transmission service at FERC-approved rates, terms and conditions. MAIT's transmission facilities are subject to functional control by PJM, and transmission service using MAIT's transmission facilities is provided by PJM under the PJM Tariff. The key terms of MAIT's current rate orders in effect for transmission customer billings, which have been effective since July 1, 2017, include a lower of actual (13 month average) or 60% capital structure and an allowed 10.3% ROE.

Federally enforceable mandatory reliability standards apply to the bulk electric system and impose certain operating, record-keeping and reporting requirements on MAIT. NERC is the ERO designated by FERC to establish and enforce these reliability standards, although NERC has delegated day-to-day implementation and enforcement of these reliability standards to six regional entities, including RFC. All of the facilities that FirstEnergy operates, including those of MAIT, are located within RFC. FirstEnergy actively participates in the NERC and RFC stakeholder processes, and otherwise monitors and manages its companies, including MAIT, in response to the ongoing development, implementation and enforcement of the reliability standards implemented and enforced by RFC.

FirstEnergy, including MAIT, believes that it is in material compliance with all currently effective and enforceable reliability standards. Nevertheless, in the course of operating its extensive electric utility systems and facilities, FirstEnergy, including MAIT, occasionally learns of isolated facts or circumstances that could be interpreted as excursions from the reliability standards. If and when such occurrences are found, FirstEnergy, including MAIT, develops information about the occurrence and develops a remedial response to the specific circumstances, including in appropriate cases “self-reporting” an occurrence to RFC. Moreover, it is clear that NERC, RFC and FERC will continue to refine existing reliability standards as well as to develop and adopt new reliability standards. Any inability on FirstEnergy’s, including MAIT’s, part to comply with the reliability standards for its bulk electric system could result in the imposition of financial penalties, or obligations to upgrade or build transmission facilities that could have a material adverse effect on MAIT’s financial condition, results of operations and cash flows.

FERC Audit

FERC’s Division of Audits and Accounting initiated a nonpublic audit of FESC in February 2019. Among other matters, the audit is evaluating FirstEnergy’s compliance with certain accounting and reporting requirements under various FERC regulations. On February 4, 2022, FERC filed the final audit report for the period of January 1, 2015 through September 30, 2021, which included several findings and recommendations that FirstEnergy has accepted. The audit report included a finding and related recommendation on FirstEnergy’s methodology for allocation of certain corporate support costs to regulatory capital accounts under certain FERC regulations and reporting. Effective in the first quarter of 2022 and in response to the finding, FirstEnergy had implemented a new methodology for the allocation of these corporate support costs to regulatory capital accounts for its regulated distribution and transmission companies on a prospective basis. With the assistance of an
independent outside firm, FirstEnergy completed an analysis during the third quarter of 2022 of these costs and how it impacted certain FERC-jurisdictional wholesale transmission customer rates for the audit period of 2015 through 2021. As a result of this analysis, FirstEnergy recorded in the third quarter of 2022 approximately $45 million ($34 million after-tax) ($4 million pre-tax at MAIT) in expected customer refunds, plus interest, due to its wholesale transmission customers and reclassified approximately $195 million ($22 million at MAIT) of certain transmission capital assets to operating expenses for the audit period, of which $90 million ($67 million after-tax) ($7 million pre-tax at MAIT) are not expected to be recoverable and impacted FirstEnergy’s earnings since they relate to costs capitalized during stated transmission rate time periods. FirstEnergy is currently recovering approximately $105 million ($16 million at MAIT) of costs reclassified to operating expenses in its transmission formula rate revenue requirements, of which $13 million (none at MAIT) of costs have been recovered as of December 31, 2023. On December 8, 2023, FERC audit staff issued a letter advising that two unresolved audit matters, primarily related to FirstEnergy’s plan to recover the reclassified operating expenses in formula transmission rates, were being referred to other offices within FERC for further review. These reclassifications also resulted in a reduction to FirstEnergy's rate base by approximately $160 million ($17 million at MAIT), which is not expected to materially impact FirstEnergy or MAIT's future earnings. The expected wholesale transmission customer refunds were recognized as a reduction to revenue. If FirstEnergy or MAIT are unable to recover these transmission costs, it could result in future charges and/or adjustments and have an adverse impact on FirstEnergy’s or MAIT's financial condition.

Transmission ROE Methodology

On March 20, 2020, FERC initiated a rulemaking proceeding on the transmission rate incentives provisions of Section 219 of the 2005 Energy Policy Act. FirstEnergy submitted comments through the Edison Electric Institute and as part of a consortium of PJM Transmission Owners. In a supplemental rulemaking proceeding that was initiated on April 15, 2021, FERC requested comments on, among other things, whether to require utilities that have been members of an RTO for three years or more and that have been collecting an “RTO membership” ROE incentive adder to file tariff updates that would terminate collection of the incentive adder. Initial comments on the proposed rule were filed on June 25, 2021, and reply comments were filed on July 26, 2021. The rulemaking remains pending before FERC. FirstEnergy is a member of PJM and its transmission subsidiaries could be affected by the supplemental proposed rule. FirstEnergy participated in comments on the supplemental rulemaking that were submitted by a group of PJM transmission owners and by various industry trade groups. If there were to be any changes to FirstEnergy's transmission incentive ROE, such changes will be applied on a prospective basis.
5. COMMITMENTS AND CONTINGENCIES
ENVIRONMENTAL MATTERS

Various federal, state and local authorities regulate MAIT with regard to air and water quality and other environmental matters. While MAIT’s environmental policies and procedures are designed to achieve compliance with applicable environmental laws and regulations, such laws and regulations are subject to periodic review and potential revision by the implementing agencies. MAIT cannot predict the timing or ultimate outcome of any of these reviews or how any future actions taken as a result thereof may materially impact its business, results of operations, cash flows and financial condition.

OTHER LEGAL PROCEEDINGS

United States v. Larry Householder, et al.

On July 21, 2020, a complaint and supporting affidavit containing federal criminal allegations were unsealed against the now former Ohio House Speaker Larry Householder and other individuals and entities allegedly affiliated with Mr. Householder. In March 2023, a jury found Mr. Householder and his co-defendant, Matthew Borges, guilty and in June 2023, the two were sentenced to prison for 20 and 5 years, respectively. Messrs. Householder and Borges have appealed their sentences. Also, on July 21, 2020, and in connection with the DOJ’s investigation, FirstEnergy received subpoenas for records from the U.S. Attorney’s Office for the Southern District Ohio. FirstEnergy was not aware of the criminal allegations, affidavit or subpoenas before July 21, 2020.

On July 21, 2021, FE entered into a three-year DPA with the U.S. Attorney’s Office that, subject to court proceedings, resolves this matter. Under the DPA, FE has agreed to the filing of a criminal information charging FE with one count of conspiracy to commit honest services wire fraud. The DPA requires that FirstEnergy, among other obligations: (i) continue to cooperate with the U.S. Attorney’s Office in all matters relating to the conduct described in the DPA and other conduct under investigation by the U.S. government; (ii) pay a criminal monetary penalty totaling $230 million within sixty days, which shall consist of (x) $115 million paid by FE to the United States Treasury and (y) $115 million paid by FE to the ODSA to fund certain assistance programs, as determined by the ODSA, for the benefit of low-income Ohio electric utility customers; (iii) publish a list of all payments made in 2021 to either 501(c)(4) entities or to entities known by FirstEnergy to be operating for the benefit of a public official, either directly or indirectly, and update the same on a quarterly basis during the term of the DPA; (iv) issue a
public statement, as dictated in the DPA, regarding FE’s use of 501(c)(4) entities; and (v) continue to implement and review its compliance and ethics program, internal controls, policies and procedures designed, implemented and enforced to prevent and detect violations of the U.S. laws throughout its operations, and to take certain related remedial measures. The $230 million payment will neither be recovered in rates or charged to FirstEnergy customers nor will FirstEnergy seek any tax deduction related to such payment. The entire amount of the monetary penalty was recognized as expense in the second quarter of 2021 and paid in the third quarter of 2021. Under the terms of the DPA, the criminal information will be dismissed after FirstEnergy fully complies with its obligations under the DPA.

Legal Proceedings Relating to United States v. Larry Householder, et al.

On August 10, 2020, the SEC, through its Division of Enforcement, issued an order directing an investigation of possible securities laws violations by FE, and on September 1, 2020, issued subpoenas to FE and certain FE officers. On April 28, 2021, July 11, 2022, and May 25, 2023, the SEC issued additional subpoenas to FE, with which FE has complied. While no contingency has been reflected in its consolidated financial statements, FE believes that it is probable that it will incur a loss in connection with the resolution of the SEC investigation. Given the ongoing nature and complexity of the review, inquiries and investigations, FE cannot yet reasonably estimate a loss or range of loss that may arise from the resolution of the SEC investigation.

On June 29, 2023, the OOCIC served FE a subpoena, seeking information relating to the conduct described in the DPA. FirstEnergy was not aware of the OOCIC’s investigation prior to receiving the subpoena and understands that the OOCIC’s investigation is also focused on the conduct described in the DPA. FirstEnergy is cooperating with the OOCIC in its investigation. On February 12, 2024, and in connection with the OOCIC’s ongoing investigation, an indictment by a grand jury of Summit County, Ohio was unsealed against the former chairman of the PUCO, Samuel Randazzo, and two former FirstEnergy senior officers, Charles E. Jones, and Michael J. Dowling, charging each of them with several felony counts, including bribery, telecommunications fraud, money laundering and aggravated theft, related to payments described in the DPA. No contingency has been reflected in FirstEnergy’s consolidated financial statements, as a loss is neither probable, nor is a loss or range of loss reasonably estimable.

In addition to the subpoenas referenced above under “—United States v. Larry Householder, et. al.” and the SEC investigation, certain FE stockholders and FirstEnergy customers filed several lawsuits against FirstEnergy and certain current and former directors, officers and other employees, and the complaints in each of these suits is related to allegations in the complaint and supporting affidavit relating to HB 6 and the now former Ohio House Speaker Larry Householder and other individuals and entities allegedly affiliated with Mr. Householder. The plaintiffs in each of the below cases seek, among other things, to recover an unspecified amount of damages (unless otherwise noted). Unless otherwise indicated, no contingency has been reflected in FirstEnergy’s consolidated financial statements with respect to these lawsuits as a loss is neither probable, nor is a loss or range of a loss reasonably estimable.

In re FirstEnergy Corp. Securities Litigation (S.D. Ohio); on July 28, 2020 and August 21, 2020, purported stockholders of FE filed putative class action lawsuits alleging violations of the federal securities laws. Those actions have been consolidated and a lead plaintiff, the Los Angeles County Employees Retirement Association, has been appointed by the court. A consolidated complaint was filed on February 26, 2021. The consolidated complaint alleges, on behalf of a proposed class of persons who purchased FE securities between February 21, 2017 and July 21, 2020, that FE and certain current or former FE officers violated Sections 10(b) and 20(a) of the Exchange Act by issuing misrepresentations or omissions concerning FE’s business and results of operations. The consolidated complaint also alleges that FE, certain current or former FE officers and directors, and a group of underwriters violated Sections 11, 12(a)(2) and 15 of the Securities Act of 1933 as a result of alleged misrepresentations or omissions in connection with offerings of senior notes by FE in February and June 2020. On March 30, 2023, the court granted plaintiffs’ motion for class certification. On April 14, 2023, FE filed a petition in the U.S. Court of Appeals for the Sixth Circuit seeking to appeal that order, which the Sixth Circuit granted on November 16, 2023. On November 30, 2023, FE filed a motion with the S.D. Ohio to stay all proceedings pending the circuit court appeal. All discovery is stayed during the pendency of the district court motion. FE believes that it is probable that it will incur a loss in connection with the resolution of this lawsuit. Given the ongoing nature and complexity of such litigation, FE cannot yet reasonably estimate a loss or range of loss.
MFS Series Trust I, et al. v. FirstEnergy Corp., et al. and Brighthouse Funds II – MFS Value Portfolio, et al. v. FirstEnergy Corp., et al. (S.D. Ohio) on December 17, 2021 and February 21, 2022, purported stockholders of FE filed complaints against FE, certain current and former officers, and certain current and former officers of EH. The complaints allege that the defendants violated Sections 10(b) and 20(a) of the Exchange Act by issuing alleged misrepresentations or omissions regarding FE’s business and its results of operations, and seek the same relief as the In re FirstEnergy Corp. Securities Litigation described above. All discovery is stayed during the pendency of the district court motion in In re FirstEnergy Corp. Securities Litigation described above. FE believes that it is probable that it will incur losses in connection with the resolution of these lawsuits. Given the ongoing nature and complexity of such litigation, FE cannot yet reasonably estimate a loss or range of loss.
State of Ohio ex rel. Dave Yost, Ohio Attorney General v. FirstEnergy Corp., et al. and City of Cincinnati and City of Columbus v. FirstEnergy Corp. (Common Pleas Court, Franklin County, OH, all actions have been consolidated); on September 23, 2020 and October 27, 2020, the OAG and the cities of Cincinnati and Columbus, respectively, filed complaints against several parties including FE, each alleging civil violations of the Ohio Corrupt Activity Act and related claims in connection with the passage of HB 6. On January 13, 2021, the OAG filed a motion for a temporary restraining order and preliminary injunction against FirstEnergy seeking to enjoin FirstEnergy from collecting the Ohio Companies' decoupling rider. On January 31, 2021, FE reached a partial settlement with the OAG and the cities of Cincinnati and Columbus with respect to the temporary restraining order and preliminary injunction request and related issues. In connection with the partial settlement, the Ohio Companies filed an application on February 1, 2021, with the PUCO to set their respective decoupling riders (Conservation Support Rider) to zero. On February 2, 2021, the PUCO approved the application of the Ohio Companies setting the rider to zero, and no additional customer bills will include new decoupling rider charges after February 8, 2021. On August 13, 2021, new defendants were added to the complaint, including two former officers of FirstEnergy. On December 2, 2021, the cities and FE entered a stipulated dismissal with prejudice of the cities’ suit. This matter was stayed through a criminal trial in United States v. Larry Householder, et al. described above, but resumed pursuant to an order, dated March 15, 2023. On July 31, 2023, FE and other defendants filed motions to dismiss in part the OAG’s amended complaint, which the OAG opposed. On February 16, 2024, the OAG moved to stay discovery in the case in light of the February 9, 2024, indictments against defendants in this action, which the court granted on March 14, 2024.

On February 9, 2022, FE, acting through the SLC, agreed to a settlement term sheet to resolve the following shareholder derivative lawsuits relating to HB 6 and the now former Ohio House Speaker Larry Householder and other individuals and entities allegedly affiliated with Mr. Householder that were filed in the S.D. Ohio, the N.D. Ohio, and the Ohio Court of Common Pleas, Summit County:

Gendrich v. Anderson, et al. and Sloan v. Anderson, et al. (Common Pleas Court, Summit County, Ohio, all actions have been consolidated); on July 26, 2020 and July 31, 2020, respectively, purported stockholders of FE filed shareholder derivative action lawsuits against certain current and former FE directors and officers, alleging, among other things, breaches of fiduciary duty.
Miller v. Anderson, et al. (N.D. Ohio); Bloom, et al. v. Anderson, et al.; Employees Retirement System of the City of St. Louis v. Jones, et al.; Electrical Workers Pension Fund, Local 103, I.B.E.W. v. Anderson et al.; Massachusetts Laborers Pension Fund v. Anderson et al.; The City of Philadelphia Board of Pensions and Retirement v. Anderson et al.; Atherton v. Dowling et al.; Behar v. Anderson, et al. (S.D. Ohio, all actions have been consolidated); beginning on August 7, 2020, purported stockholders of FE filed shareholder derivative actions alleging the FE Board and officers breached their fiduciary duties and committed violations of Section 14(a) of the Exchange Act.
On March 11, 2022, the parties executed a stipulation and agreement of settlement, and filed a motion the same day requesting preliminary settlement approval in the S.D. Ohio, which the S.D. Ohio granted on May 9, 2022. Subsequently, following a hearing on August 4, 2022, the S.D. Ohio granted final approval of the settlement on August 23, 2022.

The settlement includes a series of corporate governance enhancements and a payment to FE of $180 million, to be paid by insurance after the judgment has become final, less approximately $36 million in court-ordered attorney’s fees awarded to plaintiffs. On September 20, 2022, a purported FE stockholder filed a motion for reconsideration of the S.D. Ohio’s final settlement approval. The parties filed oppositions to that motion on October 11, 2022, and the S.D. Ohio denied that motion on May 22, 2023. On June 15, 2023, the purported FE stockholder filed an appeal in the U.S. Court of Appeals for the Sixth Circuit. On February 16, 2024, the U.S. Court of Appeals for the Sixth Circuit affirmed the district court’s final settlement approval. Once all appeal options are exhausted the judgement will become final. The settlement agreement is expected to resolve fully these shareholder derivative lawsuits.

On June 2, 2022, the N.D. Ohio entered an order to show cause why the court should not appoint new plaintiffs’ counsel, and thereafter, on June 10, 2022, the parties filed a joint motion to dismiss the matter without prejudice, which the N.D. Ohio denied on July 5, 2022. On August 15, 2022, the N.D. Ohio issued an order stating its intention to appoint one group of applicants as new plaintiffs’ counsel, and on August 22, 2022, the N.D. Ohio ordered that any objections to the appointment be submitted by August 26, 2022. The parties filed their objections by that deadline, and on September 2, 2022, the applicants responded to those objections. In the meantime, on August 25, 2022, a purported FE stockholder represented by the applicants filed a motion to intervene, attaching a proposed complaint-in-intervention purporting to assert claims that the FE Board and officers breached their fiduciary duties and committed violations of Section 14(a) of the Exchange Act as well as a claim against a third party for professional negligence and malpractice. The parties filed oppositions to that motion to intervene on September 8, 2022, and the proposed intervenor's reply in support of his motion to intervene was filed on September 22, 2022. On August 24, 2022, the parties filed a joint motion to dismiss the action pending in the N.D. Ohio based upon and in light of the approval of the settlement by the S.D. Ohio. On August 30, 2022, the parties filed a joint motion to dismiss the state court action, which the court granted on September 2, 2022. On September 29, 2023, the N.D. Ohio issued a stay of the case pending the appeal in the U.S. Court of Appeals for the Sixth Circuit.
In letters dated January 26, and February 22, 2021, staff of FERC's Division of Investigations notified FirstEnergy that the Division was conducting an investigation of FirstEnergy’s lobbying and governmental affairs activities concerning HB 6, and staff directed FirstEnergy to preserve and maintain all documents and information related to the same as such have been developed as part of an ongoing non-public audit being conducted by FERC's Division of Audits and Accounting. On December 30, 2022, FERC approved a Stipulation and Consent Agreement that resolves the investigation. The agreement includes a FirstEnergy admission of violating FERC’s “duty of candor” rule and related laws, and obligates FirstEnergy to pay a civil penalty of $3.86 million, and to submit two annual compliance monitoring reports to FERC’s Office of Enforcement regarding improvements to FirstEnergy’s compliance programs. FE paid the civil penalty on January 4, 2023 and it will not be recovered from customers. The first annual compliance monitoring report was submitted in December 2023.

The outcome of any of these lawsuits, governmental investigations and audit is uncertain and could have a material adverse effect on FE’s or its subsidiaries’ reputation, business, financial condition, results of operations, liquidity, and cash flows.

Other Legal Matters

There are various lawsuits, claims and proceedings related to MAIT's normal business operations pending against MAIT. The loss or range of loss in these matters is not expected to be material to MAIT. The other potentially material items not otherwise discussed above are described under Note 4, "Regulatory Matters."

MAIT accrues legal liabilities only when it concludes that it is probable that it has an obligation for such costs and can reasonably estimate the amount of such costs. In cases where MAIT determines that it is not probable, but reasonably possible that it has a material obligation, it discloses such obligations and the possible loss or range of loss if such estimate can be made. If it were ultimately determined that MAIT has legal liability or is otherwise made subject to liability based on any of the matters referenced above, it could have a material adverse effect on MAIT's financial condition, results of operations and cash flows.
6. TRANSACTIONS WITH AFFILIATED COMPANIES

MAIT’s revenues, operating expenses, miscellaneous income and interest expenses include transactions with affiliated companies.

FE does not bill directly or allocate any of its costs to any subsidiary company. FESC provides corporate support and other services, including executive administration, accounting and finance, risk management, human resources, corporate affairs, communications, information technology, legal services and other similar services at cost, in accordance with its cost allocation manual, to affiliated FirstEnergy companies under FESC agreements. Allocated costs are for services that are provided on behalf of more than one company, or costs that cannot be precisely identified and are allocated using formulas developed by FESC. Intercompany transactions are generally settled under commercial terms within thirty days.

Under the FirstEnergy money pool, FE’s utility and transmission operating subsidiary companies, including MAIT, have the ability to borrow from each other and the holding company to meet their short-term working capital requirements. Affiliate accounts receivable and accounts payable balances relate to intercompany transactions that have not yet settled through the FirstEnergy money pool.
MAIT is party to an intercompany income tax allocation agreement with FirstEnergy that provides for the allocation of consolidated tax liabilities. Prior to tax returns for years before 2022, net tax benefits attributable to FE, excluding any tax benefits derived from certain interest expense, were generally reallocated to the subsidiaries of FE that have taxable income. Effective January 1, 2022, the intercompany income tax allocation agreement was amended and revised such that FE no longer reallocates such tax benefits to the FE subsidiaries.
7. STATEMENT OF CASH FLOWS

As of December 31,20232022
Cash (Account 131)$— $— 
Working Fund (Account 135)— — 
Temporary Cash Investments (Account 136)— — 
Cash and Cash Equivalents at End of Year$— $— 
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
For the Twelve Months Ended December 31,20232022
Cash paid (received):
Interest – net of amount capitalized$37,031,779 $32,909,890 
Income Taxes$(2,199,711)$15,132,668 


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
STATEMENTS OF ACCUMULATED COMPREHENSIVE INCOME, COMPREHENSIVE INCOME, AND HEDGING ACTIVITIES
  1. Report in columns (b),(c),(d) and (e) the amounts of accumulated other comprehensive income items, on a net-of-tax basis, where appropriate.
  2. Report in columns (f) and (g) the amounts of other categories of other cash flow hedges.
  3. For each category of hedges that have been accounted for as "fair value hedges", report the accounts affected and the related amounts in a footnote.
  4. Report data on a year-to-date basis.
Line No.
Item
(a)
Unrealized Gains and Losses on Available-For-Sale Securities
(b)
Minimum Pension Liability Adjustment (net amount)
(c)
Foreign Currency Hedges
(d)
Other Adjustments
(e)
Other Cash Flow Hedges Interest Rate Swaps
(f)
Other Cash Flow Hedges [Specify]
(g)
Totals for each category of items recorded in Account 219
(h)
Net Income (Carried Forward from Page 116, Line 78)
(i)
Total Comprehensive Income
(j)
1
Balance of Account 219 at Beginning of Preceding Year
2
Preceding Quarter/Year to Date Reclassifications from Account 219 to Net Income
3
Preceding Quarter/Year to Date Changes in Fair Value
4
Total (lines 2 and 3)
113,195,711
113,195,711
5
Balance of Account 219 at End of Preceding Quarter/Year
6
Balance of Account 219 at Beginning of Current Year
7
Current Quarter/Year to Date Reclassifications from Account 219 to Net Income
8
Current Quarter/Year to Date Changes in Fair Value
9
Total (lines 7 and 8)
150,712,236
150,712,236
10
Balance of Account 219 at End of Current Quarter/Year


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
SUMMARY OF UTILITY PLANT AND ACCUMULATED PROVISIONS FOR DEPRECIATION. AMORTIZATION AND DEPLETION

Report in Column (c) the amount for electric function, in column (d) the amount for gas function, in column (e), (f), and (g) report other (specify) and in column (h) common function.

Line No.
Classification
(a)
Total Company For the Current Year/Quarter Ended
(b)
Electric
(c)
Gas
(d)
Other (Specify)
(e)
Other (Specify)
(f)
Other (Specify)
(g)
Common
(h)
1
UtilityPlantAbstract
UTILITY PLANT
2
UtilityPlantInServiceAbstract
In Service
3
UtilityPlantInServiceClassified
Plant in Service (Classified)
2,678,212,328
2,678,212,328
4
UtilityPlantInServicePropertyUnderCapitalLeases
Property Under Capital Leases
7,868,995
7,868,995
5
UtilityPlantInServicePlantPurchasedOrSold
Plant Purchased or Sold
6
UtilityPlantInServiceCompletedConstructionNotClassified
Completed Construction not Classified
432,226,814
432,226,814
7
UtilityPlantInServiceExperimentalPlantUnclassified
Experimental Plant Unclassified
8
UtilityPlantInServiceClassifiedAndUnclassified
Total (3 thru 7)
3,118,308,137
3,118,308,137
9
UtilityPlantLeasedToOthers
Leased to Others
10
UtilityPlantHeldForFutureUse
Held for Future Use
11
ConstructionWorkInProgress
Construction Work in Progress
372,123,923
372,123,923
12
UtilityPlantAcquisitionAdjustment
Acquisition Adjustments
13
UtilityPlantAndConstructionWorkInProgress
Total Utility Plant (8 thru 12)
3,490,432,060
3,490,432,060
14
AccumulatedProvisionForDepreciationAmortizationAndDepletionOfPlantUtility
Accumulated Provisions for Depreciation, Amortization, & Depletion
398,157,079
398,157,079
15
UtilityPlantNet
Net Utility Plant (13 less 14)
3,092,274,981
3,092,274,981
16
DetailOfAccumulatedProvisionsForDepreciationAmortizationAndDepletionAbstract
DETAIL OF ACCUMULATED PROVISIONS FOR DEPRECIATION, AMORTIZATION AND DEPLETION
17
AccumulatedProvisionForDepreciationAmortizationAndDepletionUtilityPlantInServiceAbstract
In Service:
18
DepreciationUtilityPlantInService
Depreciation
376,325,622
376,325,622
19
AmortizationAndDepletionOfProducingNaturalGasLandAndLandRightsutilityPlantInService
Amortization and Depletion of Producing Natural Gas Land and Land Rights
20
AmortizationOfUndergroundStorageLandAndLandRightsutilityPlantInService
Amortization of Underground Storage Land and Land Rights
21
AmortizationOfOtherUtilityPlantUtilityPlantInService
Amortization of Other Utility Plant
21,831,457
21,831,457
22
DepreciationAmortizationAndDepletionUtilityPlantInService
Total in Service (18 thru 21)
398,157,079
398,157,079
23
DepreciationAmortizationAndDepletionUtilityPlantLeasedToOthersAbstract
Leased to Others
24
DepreciationUtilityPlantLeasedToOthers
Depreciation
25
AmortizationAndDepletionUtilityPlantLeasedToOthers
Amortization and Depletion
26
DepreciationAmortizationAndDepletionUtilityPlantLeasedToOthers
Total Leased to Others (24 & 25)
27
DepreciationAndAmortizationUtilityPlantHeldForFutureUseAbstract
Held for Future Use
28
DepreciationUtilityPlantHeldForFutureUse
Depreciation
29
AmortizationUtilityPlantHeldForFutureUse
Amortization
30
DepreciationAndAmortizationUtilityPlantHeldForFutureUse
Total Held for Future Use (28 & 29)
31
AbandonmentOfLeases
Abandonment of Leases (Natural Gas)
32
AmortizationOfPlantAcquisitionAdjustment
Amortization of Plant Acquisition Adjustment
33
AccumulatedProvisionForDepreciationAmortizationAndDepletionOfPlantUtility
Total Accum Prov (equals 14) (22,26,30,31,32)
398,157,079
398,157,079


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
NUCLEAR FUEL MATERIALS (Account 120.1 through 120.6 and 157)
  1. Report below the costs incurred for nuclear fuel materials in process of fabrication, on hand, in reactor, and in cooling; owned by the respondent.
  2. If the nuclear fuel stock is obtained under leasing arrangements, attach a statement showing the amount of nuclear fuel leased, the quantity used and quantity on hand, and the costs incurred under such leasing arrangements.
Line No.
Description of item
(a)
Balance Beginning of Year
(b)
Changes during Year Additions
(c)
Changes during Year Amortization
(d)
Changes during Year Other Reductions (Explain in a footnote)
(e)
Balance End of Year
(f)
1
Nuclear Fuel in process of Refinement, Conv, Enrichment & Fab (120.1)
2
Fabrication
3
Nuclear Materials
4
Allowance for Funds Used during Construction
5
(Other Overhead Construction Costs, provide details in footnote)
6
SUBTOTAL (Total 2 thru 5)
7
Nuclear Fuel Materials and Assemblies
8
In Stock (120.2)
9
In Reactor (120.3)
10
SUBTOTAL (Total 8 & 9)
11
Spent Nuclear Fuel (120.4)
12
Nuclear Fuel Under Capital Leases (120.6)
13
(Less) Accum Prov for Amortization of Nuclear Fuel Assem (120.5)
14
TOTAL Nuclear Fuel Stock (Total 6, 10, 11, 12, less 13)
15
Estimated Net Salvage Value of Nuclear Materials in Line 9
16
Estimated Net Salvage Value of Nuclear Materials in Line 11
17
Est Net Salvage Value of Nuclear Materials in Chemical Processing
18
Nuclear Materials held for Sale (157)
19
Uranium
20
Plutonium
21
Other (Provide details in footnote)
22
TOTAL Nuclear Materials held for Sale (Total 19, 20, and 21)


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
ELECTRIC PLANT IN SERVICE (Account 101, 102, 103 and 106)
  1. Report below the original cost of electric plant in service according to the prescribed accounts.
  2. In addition to Account 101, Electric Plant in Service (Classified), this page and the next include Account 102, Electric Plant Purchased or Sold; Account 103, Experimental Electric Plant Unclassified; and Account 106, Completed Construction Not Classified-Electric.
  3. Include in column (c) or (d), as appropriate, corrections of additions and retirements for the current or preceding year.
  4. For revisions to the amount of initial asset retirement costs capitalized, included by primary plant account, increases in column (c) additions and reductions in column (e) adjustments.
  5. Enclose in parentheses credit adjustments of plant accounts to indicate the negative effect of such accounts.
  6. Classify Account 106 according to prescribed accounts, on an estimated basis if necessary, and include the entries in column (c). Also to be included in column (c) are entries for reversals of tentative distributions of the prior year reported in column (b). Likewise, if the respondent has a significant amount of plant retirements which have not been classified to primary accounts at the end of the year, include in column (d) a tentative distribution of such retirements, on an estimated basis, with appropriate contra entry to the account for accumulated depreciation provision. Include also in column (d) distributions of these tentative classifications in columns (c) and (d), including the reversals of the prior years tentative account distributions of these amounts. Careful observance of the above instructions and the texts of Accounts 101 and 106 will avoid serious omissions of the reported amount of respondent’s plant actually in service at end of year.
  7. Show in column (f) reclassifications or transfers within utility plant accounts. Include also in column (f) the additions or reductions of primary account classifications arising from distribution of amounts initially recorded in Account 102, include in column (e) the amounts with respect to accumulated provision for depreciation, acquisition adjustments, etc., and show in column (f) only the offset to the debits or credits distributed in column (f) to primary account classifications.
  8. For Account 399, state the nature and use of plant included in this account and if substantial in amount submit a supplementary statement showing subaccount classification of such plant conforming to the requirement of these pages.
  9. For each amount comprising the reported balance and changes in Account 102, state the property purchased or sold, name of vendor or purchase, and date of transaction. If proposed journal entries have been filed with the Commission as required by the Uniform System of Accounts, give also date.
Line No.
Account
(a)
Balance Beginning of Year
(b)
Additions
(c)
Retirements
(d)
Adjustments
(e)
Transfers
(f)
Balance at End of Year
(g)
1
1. INTANGIBLE PLANT
2
(301) Organization
3
(302) Franchise and Consents
4
(303) Miscellaneous Intangible Plant
36,407,380
17,427,544
53,834,924
5
TOTAL Intangible Plant (Enter Total of lines 2, 3, and 4)
36,407,380
17,427,544
53,834,924
6
2. PRODUCTION PLANT
7
A. Steam Production Plant
8
(310) Land and Land Rights
9
(311) Structures and Improvements
10
(312) Boiler Plant Equipment
11
(313) Engines and Engine-Driven Generators
12
(314) Turbogenerator Units
13
(315) Accessory Electric Equipment
14
(316) Misc. Power Plant Equipment
15
(317) Asset Retirement Costs for Steam Production
16
TOTAL Steam Production Plant (Enter Total of lines 8 thru 15)
17
B. Nuclear Production Plant
18
(320) Land and Land Rights
19
(321) Structures and Improvements
20
(322) Reactor Plant Equipment
21
(323) Turbogenerator Units
22
(324) Accessory Electric Equipment
23
(325) Misc. Power Plant Equipment
24
(326) Asset Retirement Costs for Nuclear Production
25
TOTAL Nuclear Production Plant (Enter Total of lines 18 thru 24)
26
C. Hydraulic Production Plant
27
(330) Land and Land Rights
28
(331) Structures and Improvements
29
(332) Reservoirs, Dams, and Waterways
30
(333) Water Wheels, Turbines, and Generators
31
(334) Accessory Electric Equipment
32
(335) Misc. Power Plant Equipment
33
(336) Roads, Railroads, and Bridges
34
(337) Asset Retirement Costs for Hydraulic Production
35
TOTAL Hydraulic Production Plant (Enter Total of lines 27 thru 34)
36
D. Other Production Plant
37
(340) Land and Land Rights
38
(341) Structures and Improvements
39
(342) Fuel Holders, Products, and Accessories
40
(343) Prime Movers
41
(344) Generators
42
(345) Accessory Electric Equipment
43
(346) Misc. Power Plant Equipment
44
(347) Asset Retirement Costs for Other Production
44.1
(348) Energy Storage Equipment - Production
45
TOTAL Other Prod. Plant (Enter Total of lines 37 thru 44)
46
TOTAL Prod. Plant (Enter Total of lines 16, 25, 35, and 45)
47
3. Transmission Plant
48
(350) Land and Land Rights
15,983,149
13,795
15,996,944
48.1
(351) Energy Storage Equipment - Transmission
49
(352) Structures and Improvements
48,888,088
7,918,490
13,018
825
56,794,385
50
(353) Station Equipment
1,384,594,238
162,575,029
7,710,127
221,684
1,539,680,824
51
(354) Towers and Fixtures
74,749,568
2,683,056
52,987
72,013,525
52
(355) Poles and Fixtures
568,367,032
106,258,806
2,276,912
672,348,926
53
(356) Overhead Conductors and Devices
509,471,679
50,525,402
3,141,461
556,855,620
54
(357) Underground Conduit
55
(358) Underground Conductors and Devices
1,046,678
130
1,046,548
56
(359) Roads and Trails
787,736
42
787,694
57
(359.1) Asset Retirement Costs for Transmission Plant
11,654
11,654
58
TOTAL Transmission Plant (Enter Total of lines 48 thru 57)
2,603,899,822
324,608,294
13,194,505
222,509
2,915,536,120
59
4. Distribution Plant
60
(360) Land and Land Rights
61
(361) Structures and Improvements
62
(362) Station Equipment
63
(363) Energy Storage Equipment – Distribution
64
(364) Poles, Towers, and Fixtures
65
(365) Overhead Conductors and Devices
66
(366) Underground Conduit
67
(367) Underground Conductors and Devices
68
(368) Line Transformers
69
(369) Services
70
(370) Meters
71
(371) Installations on Customer Premises
72
(372) Leased Property on Customer Premises
73
(373) Street Lighting and Signal Systems
74
(374) Asset Retirement Costs for Distribution Plant
75
TOTAL Distribution Plant (Enter Total of lines 60 thru 74)
76
5. REGIONAL TRANSMISSION AND MARKET OPERATION PLANT
77
(380) Land and Land Rights
78
(381) Structures and Improvements
79
(382) Computer Hardware
80
(383) Computer Software
81
(384) Communication Equipment
82
(385) Miscellaneous Regional Transmission and Market Operation Plant
83
(386) Asset Retirement Costs for Regional Transmission and Market Oper
84
TOTAL Transmission and Market Operation Plant (Total lines 77 thru 83)
85
6. General Plant
86
(389) Land and Land Rights
2,396,306
28,960
2,425,266
87
(390) Structures and Improvements
28,662,661
425,763
65,715
29,154,139
88
(391) Office Furniture and Equipment
8,921,946
1,279,363
11,540
10,189,769
89
(392) Transportation Equipment
9,618,568
1,573
9,616,995
90
(393) Stores Equipment
91
(394) Tools, Shop and Garage Equipment
4,767,022
1,025,548
65,861
5,726,709
92
(395) Laboratory Equipment
93
(396) Power Operated Equipment
94
(397) Communication Equipment
79,118,904
13,513,467
27,820
780,336
91,824,215
95
(398) Miscellaneous Equipment
96
SUBTOTAL (Enter Total of lines 86 thru 95)
133,485,407
16,271,528
105,221
714,621
148,937,093
97
(399) Other Tangible Property
98
(399.1) Asset Retirement Costs for General Plant
99
TOTAL General Plant (Enter Total of lines 96, 97, and 98)
133,485,407
16,271,528
105,221
714,621
148,937,093
100
TOTAL (Accounts 101 and 106)
2,773,792,609
358,307,366
13,299,726
714,621
222,509
3,118,308,137
101
(102) Electric Plant Purchased (See Instr. 8)
102
(Less) (102) Electric Plant Sold (See Instr. 8)
103
(103) Experimental Plant Unclassified
104
TOTAL Electric Plant in Service (Enter Total of lines 100 thru 103)
2,773,792,609
358,307,366
13,299,726
714,621
222,509
3,118,308,137


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
ELECTRIC PLANT LEASED TO OTHERS (Account 104)
Line No.
LesseeName
Name of Lessee
(a)
IndicationOfAssociatedCompany
* (Designation of Associated Company)
(b)
LeaseDescription
Description of Property Leased
(c)
CommissionAuthorization
Commission Authorization
(d)
ExpirationDateOfLease
Expiration Date of Lease
(e)
ElectricPlantLeasedToOthers
Balance at End of Year
(f)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
ELECTRIC PLANT HELD FOR FUTURE USE (Account 105)
  1. Report separately each property held for future use at end of the year having an original cost of $250,000 or more. Group other items of property held for future use.
  2. For property having an original cost of $250,000 or more previously used in utility operations, now held for future use, give in column (a), in addition to other required information, the date that utility use of such property was discontinued, and the date the original cost was transferred to Account 105.
Line No.
ElectricPlantHeldForFutureUseDescription
Description and Location of Property
(a)
ElectricPlantPropertyClassifiedAsHeldForFutureUseOriginalDate
Date Originally Included in This Account
(b)
ElectricPlantPropertyClassifiedAsHeldForFutureUseExpectedUseInServiceDate
Date Expected to be used in Utility Service
(c)
ElectricPlantHeldForFutureUse
Balance at End of Year
(d)
1 Land and Rights:
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 Other Property:
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47 TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
CONSTRUCTION WORK IN PROGRESS - - ELECTRIC (Account 107)
  1. Report below descriptions and balances at end of year of projects in process of construction (107).
  2. Show items relating to "research, development, and demonstration" projects last, under a caption Research, Development, and Demonstrating (see Account 107 of the Uniform System of Accounts).
  3. Minor projects (5% of the Balance End of the Year for Account 107 or $1,000,000, whichever is less) may be grouped.
Line No.
ConstructionWorkInProgressProjectDescription
Description of Project
(a)
ConstructionWorkInProgress
Construction work in progress - Electric (Account 107)
(b)
1
Cambria Slope-Add 115kV 6-Breaker Ring Bus
21,809,091
2
South Reading-Rebuild 69kV Station
17,391,049
3
Piney-Glory-Seward-Rebuild using 230kV
17,187,008
4
Piney - Erie South 230 kV Rebuild
16,552,994
5
Homer City - Replace Transformer
15,259,136
6
Klecknersville New Sub - 230kV Ring Bus
10,124,148
7
Summit West-Construct 115/46kV Substation
9,756,876
8
Shelocata-Convert 230kV yard to Ring Bus
9,306,588
9
Cly Substation Ring Bus Project
8,315,679
10
Shawnee-Walker 69kV-new line
8,128,609
11
Proj Mgmt - Transmission (Priority 3 & 4)
8,024,369
12
MAIT +/- 50 MVAR Mobile STATCOM
7,195,220
13
Frystown - Turf Club Rebuild
7,136,250
14
Tolna - Install 115kV Circuit Breaker
6,920,123
15
Warrior Ridge 46kV Expansion Project
6,533,601
16
North Temple-Northkill-69 kV-Construct-New Line Loop
5,886,710
17
Northwood 230 kV Ring Bus
5,072,969
18
North Meshoppen-Expand 115kV Bus
4,832,264
19
Baldy-South Hamburg 69kV Line Rehab
4,691,260
20
Lewistown-Mount Union 46kV line-Rebuild
4,539,258
21
Altoona-Replace #2 230-46kV Transformer
4,193,626
22
Yeagertown-Install a new 230/46 kV transformer
4,156,657
23
Raintree Sub- Four (New) Breaker Ring
3,581,247
24
Seward #9 230-115kV Transformer Replacement
3,442,846
25
230 kV South Lebanon Ring Bus
3,314,418
26
Transmission GIS System
3,283,636
27
Portland Substation Camera Installation
3,025,375
28
3D Modeling for Engineering
3,001,029
29
NERC Alert Mitigation
2,750,183
30
Erie Transmission Facilities
2,606,984
31
Altoona-Replace #1 230-46kV Transformer
2,547,412
32
Misoperation Relays: CAT TRAC-GLADES 115 KV
2,392,862
33
Bernville-South Hamburg 69kV Line Rebuild
2,258,731
34
FRP Hummelstown Sub - Lewistown Sub
2,200,552
35
Middletown Jct-Expand 230kV substation
2,188,352
36
Misoperation Relays: Jackson-Westgate 115 kV
2,072,693
37
Erie West 345 kV, 115 kV-Install Enhanced Perimeter Security Fence
2,037,890
38
South Reading #8 230-69kV 224MVA Transformer Replacement
1,949,749
39
Qualitrol Traveling Wave-ME Group3
1,910,124
40
South Reading, Replace #7 230-69kV 224MVA Transformer
1,851,966
41
Shade Gap - Replace Control Building
1,846,865
42
Misoperation Relays Install PowerComm PCM5350, Ametek SMARTGAP
1,816,184
43
989L Windsor-Yorkana-115kV terminal upgrades
1,790,886
44
Misoperation Relays: Gardners-Hunterstown 115 kV
1,687,783
45
Misoperation Relays Install PowerComm PCM5350, Ametek SMARTGAP Program
1,668,217
46
North Hershey 69 kV Ring Bus
1,667,867
47
Fredericksburg 69 kV Ring Bus
1,613,194
48
Piney Control Building
1,576,829
49
Westfall: New 115/46V 75MVA Transformer
1,543,309
50
63 N Hershey-Turf Club 69kV Line Rehab
1,525,783
51
Qualitrol Traveling Wave-PN Group4
1,500,005
52
Smith Street Reconfigure 115 kV Substation
1,487,043
53
Hunterstown: Purchase Spare 500/230 kV 250 MVA Single Phase Transformer
1,460,582
54
TMI500: Reliability Overlay
1,455,505
55
Bernville-North Temple (835) 69kV, Tap to Van Reed Sub
1,438,954
56
Smith St-Westgate-York Solid Line Rehab
1,413,322
57
Hokes Ring Bus
1,400,903
58
Qualitrol Traveling Wave-PN Group3
1,335,494
59
115/69 kV Smith St #1 Transformer, 115 Breaker, Switches
1,324,043
60
N Boyertown-Ringing Rocks 69kV Rebuild  / Reconductor
1,293,626
61
ADMS - PN ADMS Readiness
1,292,148
62
Penn Mar-Rockwood 115kV Line Rebuild
1,250,973
63
TMI 500/230kV Transformer Addition
1,238,374
64
South Reading 230 kV Ring Bus
1,217,574
65
Hill 115 kV Ring Bus
1,177,920
66
Warriner Pond 115 kV Breaker-and-a-Half
1,134,379
67
Collinsville 46 kV Substation Rebuild
1,129,996
68
Greenwood-Westfall 46kV: Upgrades
1,128,783
69
LIDAR 100kv and greater Line Data Acquisition
1,096,798
70
OTCM Phase III Implementation
1,088,545
71
Counter UAS - Tier 2 substations - PN
1,073,435
72
IT Advanced Analytics-Transmission Asset 57088
1,070,162
73
Altoona Transmission Facility-Garage
1,057,961
74
Eagle Valley& 31st St 115 kV Anti-Island
1,056,058
75
Shawville 230 KV Terminal Upgrades
1,046,431
76
Purchase Spare 115/69 kV Transformer
1,024,838
77
Qualitrol Traveling Wave-ME Group4
1,007,027
78
Projects < $ 1m
72,756,593
43
Total
372,123,923


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
ACCUMULATED PROVISION FOR DEPRECIATION OF ELECTRIC UTILITY PLANT (Account 108)
  1. Explain in a footnote any important adjustments during year.
  2. Explain in a footnote any difference between the amount for book cost of plant retired, Line 12, column (c), and that reported for electric plant in service, page 204, column (d), excluding retirements of non-depreciable property.
  3. The provisions of Account 108 in the Uniform System of Accounts require that retirements of depreciable plant be recorded when such plant is removed from service. If the respondent has a significant amount of plant retired at year end which has not been recorded and/or classified to the various reserve functional classifications, make preliminary closing entries to tentatively functionalize the book cost of the plant retired. In addition, include all costs included in retirement work in progress at year end in the appropriate functional classifications.
  4. Show separately interest credits under a sinking fund or similar method of depreciation accounting.
Line No.
Item
(a)
Total (c + d + e)
(b)
Electric Plant in Service
(c)
Electric Plant Held for Future Use
(d)
Electric Plant Leased To Others
(e)
Section A. Balances and Changes During Year
1
AccumulatedProvisionForDepreciationOfElectricUtilityPlant
Balance Beginning of Year
368,895,075
368,895,075
2
Depreciation Provisions for Year, Charged to
3
DepreciationExpenseExcludingAdjustments
(403) Depreciation Expense
63,048,000
63,048,000
4
DepreciationExpenseForAssetRetirementCosts
(403.1) Depreciation Expense for Asset Retirement Costs
228
228
5
ExpensesOfElectricPlantLeasedToOthers
(413) Exp. of Elec. Plt. Leas. to Others
6
TransportationExpensesClearing
Transportation Expenses-Clearing
7
OtherClearingAccounts
Other Clearing Accounts
8
OtherAccounts
Other Accounts (Specify, details in footnote):
9.1
Other Accounts (Specify, details in footnote):
10
DepreciationProvision
TOTAL Deprec. Prov for Year (Enter Total of lines 3 thru 9)
63,048,228
63,048,228
11
Net Charges for Plant Retired:
12
BookCostOfRetiredPlant
Book Cost of Plant Retired
13,299,726
13,299,726
13
CostOfRemovalOfPlant
Cost of Removal
42,618,157
42,618,157
14
SalvageValueOfRetiredPlant
Salvage (Credit)
15
NetChargesForRetiredPlant
TOTAL Net Chrgs. for Plant Ret. (Enter Total of lines 12 thru 14)
55,917,883
55,917,883
16
OtherAdjustmentsToAccumulatedDepreciation
Other Debit or Cr. Items (Describe, details in footnote):
17.1
Other Debit or Cr. Items (Describe, details in footnote):
300,202
(a)
300,202
18
BookCostOfAssetRetirementCosts
Book Cost or Asset Retirement Costs Retired
19
AccumulatedProvisionForDepreciationOfElectricUtilityPlant
Balance End of Year (Enter Totals of lines 1, 10, 15, 16, and 18)
376,325,622
376,325,622
Section B. Balances at End of Year According to Functional Classification
20
AccumulatedDepreciationSteamProduction
Steam Production
21
AccumulatedDepreciationNuclearProduction
Nuclear Production
22
AccumulatedDepreciationHydraulicProductionConventional
Hydraulic Production-Conventional
23
AccumulatedDepreciationHydraulicProductionPumpedStorage
Hydraulic Production-Pumped Storage
24
AccumulatedDepreciationOtherProduction
Other Production
25
AccumulatedDepreciationTransmission
Transmission
355,464,334
355,464,334
26
AccumulatedDepreciationDistribution
Distribution
27
AccumulatedDepreciationRegionalTransmissionAndMarketOperation
Regional Transmission and Market Operation
28
AccumulatedDepreciationGeneral
General
20,861,288
20,861,288
29
AccumulatedProvisionForDepreciationOfElectricUtilityPlant
TOTAL (Enter Total of lines 20 thru 28)
376,325,622
376,325,622


FOOTNOTE DATA

(a) Concept: OtherAdjustmentsToAccumulatedDepreciation
Other debit and credit items consist of the following:
Miscellaneous transfers and adjustments $300,202 
Total debit and credit items $300,202 

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
INVESTMENTS IN SUBSIDIARY COMPANIES (Account 123.1)
  1. Report below investments in Account 123.1, Investments in Subsidiary Companies.
  2. Provide a subheading for each company and list thereunder the information called for below. Sub-TOTAL by company and give a TOTAL in columns (e), (f), (g) and (h). (a) Investment in Securities - List and describe each security owned. For bonds give also principal amount, date of issue, maturity, and interest rate. (b) Investment Advances - Report separately the amounts of loans or investment advances which are subject to repayment, but which are not subject to current settlement. With respect to each advance show whether the advance is a note or open account. List each note giving date of issuance, maturity date, and specifying whether note is a renewal.
  3. Report separately the equity in undistributed subsidiary earnings since acquisition. The TOTAL in column (e) should equal the amount entered for Account 418.1.
  4. For any securities, notes, or accounts that were pledged designate such securities, notes, or accounts in a footnote, and state the name of pledgee and purpose of the pledge.
  5. If Commission approval was required for any advance made or security acquired, designate such fact in a footnote and give name of Commission, date of authorization, and case or docket number.
  6. Report column (f) interest and dividend revenues from investments, including such revenues from securities disposed of during the year.
  7. In column (h) report for each investment disposed of during the year, the gain or loss represented by the difference between cost of the investment (or the other amount at which carried in the books of account if different from cost) and the selling price thereof, not including interest adjustment includible in column (f).
  8. Report on Line 42, column (a) the TOTAL cost of Account 123.1.
Line No.
DescriptionOfInvestmentsInSubsidiaryCompanies
Description of Investment
(a)
DateOfAcquisitionInvestmentsInSubsidiaryCompanies
Date Acquired
(b)
DateOfMaturityInvestmentsInSubsidiaryCompanies
Date of Maturity
(c)
InvestmentInSubsidiaryCompanies
Amount of Investment at Beginning of Year
(d)
EquityInEarningsOfSubsidiaryCompanies
Equity in Subsidiary Earnings of Year
(e)
InterestAndDividendRevenueFromInvestments
Revenues for Year
(f)
InvestmentInSubsidiaryCompanies
Amount of Investment at End of Year
(g)
InvestmentGainLossOnDisplosal
Gain or Loss from Investment Disposed of
(h)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Total Cost of Account 123.1 $
Total


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
MATERIALS AND SUPPLIES
  1. For Account 154, report the amount of plant materials and operating supplies under the primary functional classifications as indicated in column (a); estimates of amounts by function are acceptable. In column (d), designate the department or departments which use the class of material.
  2. Give an explanation of important inventory adjustments during the year (in a footnote) showing general classes of material and supplies and the various accounts (operating expenses, clearing accounts, plant, etc.) affected debited or credited. Show separately debit or credits to stores expense clearing, if applicable.
Line No.
Account
(a)
Balance Beginning of Year
(b)
Balance End of Year
(c)
Department or Departments which Use Material
(d)
1
Fuel Stock (Account 151)
2
Fuel Stock Expenses Undistributed (Account 152)
3
Residuals and Extracted Products (Account 153)
4
Plant Materials and Operating Supplies (Account 154)
5
Assigned to - Construction (Estimated)
6
Assigned to - Operations and Maintenance
7
Production Plant (Estimated)
8
Transmission Plant (Estimated)
9
Distribution Plant (Estimated)
10
Regional Transmission and Market Operation Plant (Estimated)
11
Assigned to - Other (provide details in footnote)
12
TOTAL Account 154 (Enter Total of lines 5 thru 11)
13
Merchandise (Account 155)
14
Other Materials and Supplies (Account 156)
15
Nuclear Materials Held for Sale (Account 157) (Not applic to Gas Util)
16
Stores Expense Undistributed (Account 163)
17
18
19
20
TOTAL Materials and Supplies


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
Allowances (Accounts 158.1 and 158.2)
  1. Report below the particulars (details) called for concerning allowances.
  2. Report all acquisitions of allowances at cost.
  3. Report allowances in accordance with a weighted average cost allocation method and other accounting as prescribed by General Instruction No. 21 in the Uniform System of Accounts.
  4. Report the allowances transactions by the period they are first eligible for use: the current year’s allowances in columns (b)-(c), allowances for the three succeeding years in columns (d)-(i), starting with the following year, and allowances for the remaining succeeding years in columns (j)-(k).
  5. Report on Line 4 the Environmental Protection Agency (EPA) issued allowances. Report withheld portions Lines 36-40.
  6. Report on Line 5 allowances returned by the EPA. Report on Line 39 the EPA’s sales of the withheld allowances. Report on Lines 43-46 the net sales proceeds and gains/losses resulting from the EPA’s sale or auction of the withheld allowances.
  7. Report on Lines 8-14 the names of vendors/transferors of allowances acquired and identify associated companies (See "associated company" under "Definitions" in the Uniform System of Accounts).
  8. Report on Lines 22 - 27 the name of purchasers/ transferees of allowances disposed of and identify associated companies.
  9. Report the net costs and benefits of hedging transactions on a separate line under purchases/transfers and sales/transfers.
  10. Report on Lines 32-35 and 43-46 the net sales proceeds and gains or losses from allowance sales.
Current Year Year One Year Two Year Three Future Years Totals
Line No.
SO2 Allowances Inventory (Account 158.1)
(a)
No.
(b)
Amt.
(c)
No.
(d)
Amt.
(e)
No.
(f)
Amt.
(g)
No.
(h)
Amt.
(i)
No.
(j)
Amt.
(k)
No.
(l)
Amt.
(m)
1
Balance-Beginning of Year
2
3
Acquired During Year:
4
Issued (Less Withheld Allow)
5
Returned by EPA
6
7
8
9
10
11
12
13
14
15
Total
16
17
Relinquished During Year:
18
Charges to Account 509
19
Other:
20
Allowances Used
21
Cost of Sales/Transfers:
22
23
24
25
26
27
28
Total
29
Balance-End of Year
30
31
Sales:
32
Net Sales Proceeds(Assoc. Co.)
33
Net Sales Proceeds (Other)
34
Gains
35
Losses
Allowances Withheld (Acct 158.2)
36
Balance-Beginning of Year
37
Add: Withheld by EPA
38
Deduct: Returned by EPA
39
Cost of Sales
40
Balance-End of Year
41
42
Sales
43
Net Sales Proceeds (Assoc. Co.)
44
Net Sales Proceeds (Other)
45
Gains
46
Losses


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
Allowances (Accounts 158.1 and 158.2)
  1. Report below the particulars (details) called for concerning allowances.
  2. Report all acquisitions of allowances at cost.
  3. Report allowances in accordance with a weighted average cost allocation method and other accounting as prescribed by General Instruction No. 21 in the Uniform System of Accounts.
  4. Report the allowances transactions by the period they are first eligible for use: the current year’s allowances in columns (b)-(c), allowances for the three succeeding years in columns (d)-(i), starting with the following year, and allowances for the remaining succeeding years in columns (j)-(k).
  5. Report on Line 4 the Environmental Protection Agency (EPA) issued allowances. Report withheld portions Lines 36-40.
  6. Report on Line 5 allowances returned by the EPA. Report on Line 39 the EPA’s sales of the withheld allowances. Report on Lines 43-46 the net sales proceeds and gains/losses resulting from the EPA’s sale or auction of the withheld allowances.
  7. Report on Lines 8-14 the names of vendors/transferors of allowances acquired and identify associated companies (See "associated company" under "Definitions" in the Uniform System of Accounts).
  8. Report on Lines 22 - 27 the name of purchasers/ transferees of allowances disposed of and identify associated companies.
  9. Report the net costs and benefits of hedging transactions on a separate line under purchases/transfers and sales/transfers.
  10. Report on Lines 32-35 and 43-46 the net sales proceeds and gains or losses from allowance sales.
Current Year Year One Year Two Year Three Future Years Totals
Line No.
NOx Allowances Inventory (Account 158.1)
(a)
No.
(b)
Amt.
(c)
No.
(d)
Amt.
(e)
No.
(f)
Amt.
(g)
No.
(h)
Amt.
(i)
No.
(j)
Amt.
(k)
No.
(l)
Amt.
(m)
1
Balance-Beginning of Year
2
3
Acquired During Year:
4
Issued (Less Withheld Allow)
5
Returned by EPA
6
7
8
9
10
11
12
13
14
15
Total
16
17
Relinquished During Year:
18
Charges to Account 509
19
Other:
20
Allowances Used
21
Cost of Sales/Transfers:
22
23
24
25
26
27
28
Total
29
Balance-End of Year
30
31
Sales:
32
Net Sales Proceeds(Assoc. Co.)
33
Net Sales Proceeds (Other)
34
Gains
35
Losses
Allowances Withheld (Acct 158.2)
36
Balance-Beginning of Year
37
Add: Withheld by EPA
38
Deduct: Returned by EPA
39
Cost of Sales
40
Balance-End of Year
41
42
Sales
43
Net Sales Proceeds (Assoc. Co.)
44
Net Sales Proceeds (Other)
45
Gains
46
Losses


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
EXTRAORDINARY PROPERTY LOSSES (Account 182.1)
WRITTEN OFF DURING YEAR
Line No.
DescriptionOfExtraordinaryPropertyLoss
Description of Extraordinary Loss [Include in the description the date of Commission Authorization to use Acc 182.1 and period of amortization (mo, yr to mo, yr).]
(a)
ExtraordinaryPropertyLossesNotYetRecognized
Total Amount of Loss
(b)
ExtraordinaryPropertyLossesRecognized
Losses Recognized During Year
(c)
ExtraordinaryPropertyLossesWrittenOffAccountCharged
Account Charged
(d)
ExtraordinaryPropertyLossesWrittenOff
Amount
(e)
ExtraordinaryPropertyLosses
Balance at End of Year
(f)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
20 TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
UNRECOVERED PLANT AND REGULATORY STUDY COSTS (182.2)
WRITTEN OFF DURING YEAR
Line No.
DescriptionOfUnrecoveredPlantAndRegulatoryStudyCosts
Description of Unrecovered Plant and Regulatory Study Costs [Include in the description of costs, the date of COmmission Authorization to use Acc 182.2 and period of amortization (mo, yr to mo, yr)]
(a)
UnrecoveredPlantAndRegulatoryStudyCostsNotYetRecognized
Total Amount of Charges
(b)
UnrecoveredPlantAndRegulatoryStudyCostsRecognized
Costs Recognized During Year
(c)
UnrecoveredPlantAndRegulatoryStudyCostsWrittenOffAccountCharged
Account Charged
(d)
UnrecoveredPlantAndRegulatoryStudyCostsWrittenOff
Amount
(e)
UnrecoveredPlantAndRegulatoryStudyCosts
Balance at End of Year
(f)
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
Transmission Service and Generation Interconnection Study Costs
  1. Report the particulars (details) called for concerning the costs incurred and the reimbursements received for performing transmission service and generator interconnection studies.
  2. List each study separately.
  3. In column (a) provide the name of the study.
  4. In column (b) report the cost incurred to perform the study at the end of period.
  5. In column (c) report the account charged with the cost of the study.
  6. In column (d) report the amounts received for reimbursement of the study costs at end of period.
  7. In column (e) report the account credited with the reimbursement received for performing the study.
Line No.
DescriptionOfStudyPerformed
Description
(a)
StudyCostsIncurred
Costs Incurred During Period
(b)
StudyCostsAccountCharged
Account Charged
(c)
StudyCostsReimbursements
Reimbursements Received During the Period
(d)
StudyCostsAccountReimbursed
Account Credited With Reimbursement
(e)
1
Transmission Studies
2
(a)
Total Transmission Service Studies
37,091
18,013
20
Total
21
Generation Studies
22
(b)
Total Generator Interconnection
437,824
449,176
39
Total
40 Grand Total


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
FOOTNOTE DATA

(a) Concept: DescriptionOfStudyPerformed
Description


(a)
Costs
Incurred
During

Period
(b)
Account

Charged


(c)
Reimbursements

Received During

Period
(d)
Account

Credited With

Reimbursement
(e)
AD2-062 Roxbury - Greene 138 kV FAC PN 596  561.6 561.6
AE1-071 Shade Gap-Roxbury 115 kV FAC PN 20,641  561.6 561.6
AE1-129 Zion View-Middletown 115 kV FAC 438  561.6 561.6
AE1-196 Hokes-Grantley 69 kV FAC ME 148  561.6 561.6
AE2-117 Altoona 46 kV FAC PN 21  561.6 21  561.6
AE2-118 Williamsburg 46 kV FAC PN 561.6 561.6
AE2-129 Philipsburg- Shawville 115kV FA 561.6 561.6
AE2-131 Philipsburg- Shawville 34.5kV F 1,054  561.6 1,054  561.6
AE2-139 East Towanda-Grover 230 kV SIS P 367  561.6 561.6
AE2-211 Jackson-Three Mile Island 230 k 165  561.6 165  561.6
AE2-224 Bearrock-Johnstown 230 kV FAC P 16,121  561.6 16,121  561.6
AE2-264 Altoona-Raystown 230 kV FAC PN 1,122  561.6 1,122  561.6
AE2-299 Erie East 230 kV FAC PN 1,573  561.6 1,512  561.6
AE2-316 Brookville-Squab Hollow 138 kV 2,058  561.6 1,998  561.6
AE2-345 Hunterstown 115 kV FAC ME 10,051  561.6 9,991  561.6
AF1-006 Fairview East 34.5 kV FAC PN (50,000) 561.6 (48,993) 561.6
AF1-039 Listonburg-Highpoint 24.9 kV SI 561.6 561.6
AF1-140 BL Diamond 23 kV FAC PN 2,744  561.6 3,108  561.6
AF1-165 Annville 69 kV FAC ME 4,697  561.6 10,997  561.6
AF1-179 Tolna 115 kV FAC ME 561.6 (115) 561.6
AF1-217 edinboro south 34.5 kV SIS PN 561.6 561.6
AF1-220 Ridgway Whetstone 115 kV SIS PN 561.6 561.6
AF1-272 Homer City Stole Rd 34.5 kV SIS 561.6 561.6
AF1-273 Allegheny 115 kV SIS PN 561.6 561.6
AF1-287 Edinboro South III 34.5 kV SIS 561.6 561.6
AF2-097 Fairview East 34.5 kVII Feas PN 561.6 561.6
AF2-130 Wolfs Corners 34.5 kV Feas PN 561.6 561.6
AF2-135 Rockwood 13.2 kV Feas PN 561.6 561.6
AF2-141 Lick Run 115 kV Feas PN 561.6 561.6
AF2-146 Hill Valley-Valley REC 46 kV FE 561.6 561.6
AF2-147 Lewistown-McVeytown 46 kV Feas 561.6 561.6
AF2-148 Shade Gap 23 kV Feas PN 561.6 561.6
AF2-170 Springboro-Albion 34.5 kV Feas 561.6 561.6
AG1-301 Miller REC–Warrior Ridge 46kV FA 9,724  561.6 13,206  561.6
PA19-081 Funny Farm Rd 115 kV FEAS PN (300) 561.6 (300) 561.6
PA19-120 6618 US -522 46 kV FEAS PN (300) 561.6 561.6
PA19-121 Shirley AYR Road 46 kV FEAS PN (300) 561.6 561.6
PA20-013 Warrior Rdige 46 kV FEAS PN (300) 561.6 561.6
PA20-028 Oxford 13.2kV Pre Ap ME (300) 561.6 561.6
Q387 Affecting Utility with NYISO 230kV 20,925  561.6 13,557  561.6
Facility Study Order - AEC/Claverack - M (10,446) 561.6 (10,063) 561.6
AE2-131 Philipsburg- Shawville 115kV PN 109  561.6 561.6
AF2-102 Germantown 12.7 kV FEAS ME 127  561.6 561.6
AF1-311 Montour 230 kV FAC PN 1,020  561.6 919  561.6
TO-1636 MAIT-NYSEG Goudey Decommissionin 1,139  561.6 1,139  561.6
AG1-281 Claysburg-HCR Tap 46 kV FAC PN 2,488  561.6 2,574  561.6
AE2-249 Bedford North-PA Hollow 23kV FA 127  561.6 561.6
AE1-185 Hokes-Jackson 69 kV FAC ME 304  561.6 561.6
WL-2399 Penelec-AEC Pride 115kV DP Load 217  561.6 561.6
AF1-321 Hooversville 115 kV FEAS PN 566  561.6 561.6
AF1-276 Lewis Run Pierce brook 230 kV FE 495  561.6 561.6
Total Transmission Services Study 37,091   561.6 18,013   561.6
(b) Concept: DescriptionOfStudyPerformed
Description



(a)
Costs
Incurred
During

Period
(b)
Account


Charged


(c)
Reimburse-ments

Received
During
Period
(d)
Account


Credited With
 
Reimbursement
(e)
AE2-113 Farmers Valley Ridgeway 115 kV 2,009 561.7 3,199 561.7
AE2-139 East Towanda-Grover 230kV FAC PN 15,037 561.7 14,657 561.7
AF1-086 Madera-Westover South 115 kV FA 14,243 561.7 14,133 561.7
AF1-094 Union City Centerville 34.5 kV F 3,051 561.7 6,094 561.7
AF1-096 Titusville-Bethel Church 34.5 kV 0 561.7 961 561.7
AF1-098 Four Mile Jct-Corry East 115 kV 275 561.7 0 561.7
AF1-134 CL-Green Acres 34.5 kV SIS PN 864 561.7 0 561.7
AF1-143 Lick Run 115 kV FAC PN 3,024 561.7 4,654 561.7
AF1-211 LE-Naftzinger 2 13.2 kV FAC ME 955 561.7 4,931 561.7
AF1-212 LE-Nafttzinger 13.2 FAC ME 635 561.7 4,612 561.7
AF1-272 Lucerne 115 kV FAC PN 5,669 561.7 7,395 561.7
AF1-286 East Sayre 34.5 kV FAC PN 11,625 561.7 2,687 561.7
AF1-287 Edinboro South III 34.5 kV FAC (12,925) 561.7 (8,319) 561.7
AF1-302 Brookville Squad Hollow 134 kv 60 561.7 0 561.7
AF1-321 Hooversville 115 kV I FAC PN 11,318 561.7 12,958 561.7
AF2-001 Hooversville 115 kV II FAC PN 13,541 561.7 15,024 561.7
AF2-002 Hooversville 115 kV III FAC PN 241 561.7 0 561.7
AF2-010 Union City-Titusville 115 kV FAC 8,937 561.7 13,166 561.7
AF2-030 Ontelaunee 230 kV FAC ME 14,034 561.7 0 561.7
AF2-039 Shawville-Clearfield 34.5kV ST F 21,095 561.7 0 561.7
AF2-050 Bearrock-Johnstown 230 kV FAC PN 14,260 561.7 16,446 561.7
AF2-092 Bedford North-Snake River 23.5 1,770 561.7 3,388 561.7
AF2-102 Germantown 13.2 kV SIS ME 1,788 561.7 0 561.7
AF2-121 Philipsburg-Shawville 34.5 kV FA 2,351 561.7 0 561.7
AF2-130 Wolfs Corners 34.5 kV FAC PN 851 561.7 2,701 561.7
AF2-141 Lick Run 115 kV FAC PN 15,028 561.7 15,950 561.7
AF2-163 Lick Run 115 kV FAC PN 14,776 561.7 14,575 561.7
AF2-164 Handsome Lake 345 kV FAC PN 6,095 561.7 6,148 561.7
AF2-165 Clarke Summit-Emlenton 34.5 kV 2,882 561.7 0 561.7
AF2-165 Clarke Summit-Emlenton 34.5 kV F 2,940 561.7 0 561.7
AF2-166 Clark Summit-Emlenton 34 kV FAC 14,100 561.7 14,736 561.7
AF2-175 Straban 13.2 kV SIS ME 309 561.7 561.7
AF2-197 East Towanda 115 kV SIS PN 434 561.7 1,174 561.7
AF2-213 Zions View-Smith Street 115 kV F 14,501 561.7 22,097 561.7
AF2-229 Roxbury 23 kV FAC PN 18,452 561.7 20,200 561.7
AF2-235 Titusville-Oil Creek 34.5 kV FAC 6,207 561.7 8,617 561.7
AF2-238 Mansfield-South Troy 34.5 kV FAC 5,188 561.7 10,969 561.7
AF2-336 Snake Spring 115 kV I FAC PN 22,814 561.7 22,003 561.7
AF2-337 Snake Spring 115 kV II FAC PN 14,728 561.7 15,466 561.7
AF2-338 Snake Spring 115 kV III FAC PN 13,063 561.7 13,801 561.7
AF2-339 Snake Spring 115 kV IV FAC PN 14,847 561.7 15,959 561.7
AF2-383 Tolna 115 kV FAC ME 15,401 561.7 10,434 561.7
AF2-405 East Sayre 34.5 kV III FAC PN 462 561.7 561.7
AG1-041 Bedford North-Osterburg 23.5 kV 3,273 561.7 5,918 561.7
AG1-052 Zionsview-Middletown 115kVII FAC 1,931 561.7 3,271 561.7
AG1-090 Philipsburg 115 kV FEAS PN 11 561.7 561.7
AG1-090 Philipsburg 115 kV SIS PN 329 561.7 805 561.7
AG1-193 Utica Junction 34.5 kV SIS PN 1,248 561.7 561.7
AG1-193 Utica Junction 34.5 kV FAC 7,977 561.7 561.7
AG1-197 Morgan Street-Cochranton 34.5 k 427 561.7 561.7
AG1-198 Union City 34.5 kV FAC PN 4,556 561.7 561.7
AG1-198 Union City 34.5 kV FAC SL PN 3,789 561.7 3,789 561.7
AG1-202 Springboro 12.47 kV FAC PN 9,632 561.7 10,110 561.7
AG1-203 Reels Corner 23 kV FAC PN 4,731 561.7 9,263 561.7
AG1-205 Rockwood 23 kV FAC PN 12,284 561.7 9,551 561.7
AG1-303 Geneva 115 kV FAC PN 8,027 561.7 11,784 561.7
AG1-308 Shawville-Philipsburg 115 kV FAC 4,623 561.7 6,152 561.7
AG1-377 Philipsburg 115 kV SIS PN 11 561.7 561.7
AG1-377 Philipsburg 115 kV FAC PN 497 561.7 345 561.7
AG1-378 Philipsburg 115 kV SIS PN 38 561.7 1,666 561.7
AG1-382 SGC Tap-Reese REC 46 kV FAC PN 15,472 561.7 14,056 561.7
AG1-419 Lynnville-South Hamburg 69kV FAC 6,153 561.7 12,140 561.7
AG1-465 North Hanover-Gitts Run 115 kV F 7,003 561.7 7,788 561.7
AG1-486 Orrtanna 115 kV FAC ME 6,793 561.7 7,374 561.7
AG1-520 Hooversville-Rockingham 23kV FAC 1,803 561.7 4,830 561.7
AH1-286 Schoonover FEAS PN 470 561.7 682 561.7
AH2-016 Stonycreek 23kV FEAS PN 561.7 113 561.7
AH2-017 Brothersvalley 23kV FEAS PN 561.7 799 561.7
AH2-095 Crawford 13.8 kV FEAS PN 561.7 230 561.7
AH2-381 North Lebanon-Annville 69kV FEAS 54 561.7 113 561.7
AI1-044 Bedford 12.47 kV FEAS PN 561.7 115 561.7
G1-040 Morgan Street-Mount Hope 34.5 kV 14,862 561.7 16,800 561.7
PA21-936 Glory 115kV PA PN 13,453 561.7 14,163 561.7
TO-1653 Pike County & MAIT Milford 69kV (140) 561.7 561.7
WL-2165 PN-Girard Borough 4.16kV BTM Ge 127 561.7 561.7
WL-2249 MAIT-PN Sinking Valley Substatio (13,022) 561.7 (13,022) 561.7
WL-2325 PN-AEC Rosebud/Mahoning Creek Mi (3,673) 561.7 (3,673) 561.7
WL-2340 PN-AEC Bakers Summit 23kV DP DLS (599) 561.7 561.7
PA19-042 Pre App 4487 Route 349 34.5 kV (300) 561.7 561.7
PA19-043 Pre App Williams Rd. 34.5 kV P (300) 561.7 561.7
PA19-026 Pre App State Rt 86 #1 115 kV (300) 561.7 561.7
PA19-063 Pre App Gospel Hill Rd #1 34.5 (300) 561.7 561.7
PA19-076 Pathvalley Rd 23 kV PN (300) 561.7 561.7
PA19-069 State Rd 86 - 115 kV PN FEAS (300) 561.7 561.7
PA19-079 1201 t 748 - 23 kV FEAS PN (300) 561.7 561.7
PA20-019 Yellow Creek 23 kV PREAP PN (300) 561.7 561.7
PA20-020 Yellow Creek 23kV II PreAp PN (300) 561.7 561.7
PA20-021 Yellow Creek 23kV III PreAp PN (300) 561.7 561.7
AF1-334 Northill 69 kV FAC ME 1,110 561.7 561.7
PA20-044 Haynie 115kV PA PN (300) 561.7 561.7
PA20-051 Woodvale 23kV PA PN (300) 561.7 561.7
AF1-104 Erie West 34.5 kV SIS PN 328 561.7 356 561.7
PA20-054 Canoe Camp 12kV PA PN (300) 561.7 561.7
AF1-143 Lick Run 115 kV SIS PN 123 561.7 561.7
AF1-336 Northkill 69 kV FAC ME 4,715 561.7 561.7
AF2-121 Philipsburg-Shawville 34.5 kV S 453 561.7 561.7
AF1-170 Springboro Venango Jct 115 kV F 2,583 561.7 561 561.7
AF2-164 Handsome Lake 34.5 kV SIS PN 535 561.7 561.7
PA20-101 Cambria Slope 46kV PA PN (300) 561.7 561.7
AF2-294 Thompson 34.5 kV SIS PN 805 561.7 561.7
PA20-111 Eclipse-Utica Junction 115 kV (300) 561.7 561.7
PA20-115 Two Mile Run-Potter 115 kV PA (300) 561.7 561.7
AF1-140 CLAYSBURG 23 KV SIS PN (9,342) 561.7 (7,917) 561.7
PA21-012 Brush Valley 23kV FEAS PN (300) 561.7 561.7
PA21-019 Laurel Lake 34.5kV PA PN (300) 561.7 561.7
PA21-037 Milan 34.5kV PA PN (300) 561.7 561.7
PA21-668 Roxbury 23kV PA-PN (300) 561.7 561.7
PA21-667 Venango Junction 34.5kV PA-PN (300) 561.7 561.7
PA21-724 Brookville West Breaker 34.5kV (300) 561.7 561.7
AF2-088 Shawville-Clearfield 34.5kV II S 1,762 561.7 561.7
PA21-745 Crown 34.5kV PA PN (300) 561.7 561.7
PA21-746 Morgan 34.5kV PA PN (300) 561.7 561.7
PA21-747 Morgan 34.5kV PA PN (300) 561.7 561.7
PA21-748 Crown 34.5kV PA PN (300) 561.7 561.7
AG1-296 Snyder Township 34.5 kV FAC 3,736 561.7 5,116 561.7
PA21-729 Crane Road 34.5kV PA PN (300) 561.7 561.7
PA21-783 Brookville 34.5kV PA PN (300) 561.7 561.7
PA21-732 Warren 34.5kV PA PN (300) 561.7 561.7
PA21-819 Osceola 34.5kV PA PN (300) 561.7 561.7
PA21-849 Marionville 12kV PA PN (300) 561.7 561.7
PA21-856 Bedford 23kV PA PN (300) 561.7 561.7
PA21-786 Carlisle Pike 23kV FEAS PN (300) 561.7 561.7
PA21-845 Hooversville 23kV FEAS PN (300) 561.7 561.7
PA21-900 Blairsville 23kV PA PN (300) 561.7 561.7
PA21-908 Milan 34.5kV PA PN (300) 561.7 561.7
PA21-757 Osterburg 23kV PA PN (300) 561.7 561.7
PA21-904 Piney 34.5kV PA PN (300) 561.7 561.7
PA21-820 Niles Valley 34.5kV PA PN (300) 561.7 561.7
PA21-915 Haynie 34.5kV PA PN (300) 561.7 561.7
PA21-918 Summit 46kV PA PN (300) 561.7 561.7
PA21-919 Nanty Glo 46kV PA PN (300) 561.7 561.7
PA21-758 Hooversville 23kV PA PN (300) 561.7 561.7
PA21-776 Roxbury 23kV PA PN (300) 561.7 561.7
PA21-737 Thompson 12kV PA PN (300) 561.7 561.7
PA21-901 , Brookside 34.5kV PA PN (300) 561.7 561.7
PA21-924 Snakespring 23kV PA PN (300) 561.7 561.7
PA21-925 Canton 34.5kV PA PN (300) 561.7 561.7
PA21-927 Geneva 34.5kV PA PN (300) 561.7 561.7
PA21-930 Meyersdale 23kV PA PN (300) 561.7 561.7
PA21-931 Rockwood 23kV PA PN (300) 561.7 561.7
PA21-940 Piney-Crown 34.5kV PA PN (300) 561.7 561.7
PA21-797 East Pike 23kV PA PN (300) 561.7 561.7
PA22-954 East Sayer-Milan 34.5kV PA PN (300) 561.7 561.7
PA22-958 Clark Summit 34.5kV PA PN (300) 561.7 561.7
PA22-961 Tionesta Jct 34.5kV PA PN (300) 561.7 561.7
PA22-963 Union City 34.5kV PA PN (300) 561.7 561.7
PA21-939 Meyersdale 23kV PA PN (300) 561.7 561.7
PA21-844 Corry East 34.5kV PA PN (300) 561.7 561.7
PA22-974 Osceola 34.5kV PA PN (300) 561.7 561.7
PA22-980 Roxbury 23kV PA PN (300) 561.7 561.7
PA22-982 Garman 34.5kV PA PN (300) 561.7 561.7
PA922-984 Union City 34.5kV PA PN (300) 561.7 561.7
PA22-985 South Troy 34.5kV PA PN (300) 561.7 561.7
PA22-987 North Meshoppen 34.5kV PA PN (300) 561.7 561.7
PA22-988 Tunkhannock 34.5kV PA PN (300) 561.7 561.7
PA22-992 Hooversville 23kV PA PN (300) 561.7 561.7
PA22-991 Springboro 34.5kV PA PN (300) 561.7 561.7
PA22-994 Morgan Street 34.5kV PA PN (300) 561.7 561.7
PA22-997 Hooversville 115kV PA PN (300) 561.7 561.7
PA22-1000 Morgan Street 34.5kV PA PN (300) 561.7 561.7
PA22-1005 Hooversville 23kV PA PN (300) 561.7 561.7
PA22-1006 Piney 34.5kV PA PN (300) 561.7 561.7
PA22-1007 Crown 34.5kV PA PN (300) 561.7 561.7
PA22-1011 Union City 34.5kV PA PN (300) 561.7 561.7
PA22-973 Butler Hill 34.5kV PA PN (300) 561.7 561.7
PA22-1029 Union City 34.5kV PA PN (300) 561.7 561.7
PA22-1018 Somerset 23kV PA PN (300) 561.7 561.7
PA22-1020 Rockwood 23kV PA PN (300) 561.7 561.7
PA22-1025 Roxbury 23kV PA PN (300) 561.7 561.7
PA22-1026 Brockway 34.5kV PA PN (300) 561.7 561.7
PA22-1027 North Towanda 34.5kV PA PN (300) 561.7 561.7
PA22-1032 Pennmar 23kV PA PN (300) 561.7 561.7
PA22-1064 Allegheny 23kV PA PN (300) 561.7 561.7
PA22-1219 Hooversville 23kV PA PN (161) 561.7 561.7
PA22-1220 Utica Junction 34.5kV PA PN (300) 561.7 561.7
PA22-1222 Ralphton 23kV PA PN (300) 561.7 561.7
PA22-1239 Pennmar 23kV PA PN (300) 561.7 561.7
AG1-041 Bedford North-Osterburg 23.5 kV 953 561.7 561.7
AF2-221 Scalp Level 22.9 kV SIS PN 1,158 561.7 2,390 561.7
AG1-242 Beccaria 34.5 kV SIS PN 41 561.7 561.7
AF2-296 Madera 34.5 kV FAC PN 12,284 561.7 561.7
AD2-158 Old Chapel Milville 138 kV FEAS 561.7 561.7
AE1-059 Stanton 230 kV FEAS PN 561.7 561.7
AE1-097 Hudson Transmission Partners 34 561.7 561.7
AF1-142 Moshannon-Milesburg 230 kV SIS 787 561.7 115 561.7
AA1-144 East Towanda-Grover 230kV CONS 561.7 561.7
AF1-240 Timblin 34.5 kV FAC PN 2,243 561.7 3,517 561.7
AG1-140 Union City 34.5 kV SIS PN (9,783) 561.7 (5,154) 561.7
AG1-253 Erie East-Union City 34.5 kV SIS 217 561.7 273 561.7
WL-2293 AEC Herrick 34.5kV DP Relocation (1,858) 561.7 (1,691) 561.7
WL-2294 AEC Wills Mountain 115kV DLS PN (2,650) 561.7 (2,370) 561.7
AH2-248 St. Benedict-Patton (Uprate) FEA 561.7 561.7
PA19-064 Pre App Gospel Hill Rd #2 34.5 (300) 561.7 561.7
AE2-344 Edinboro South 115 kV FAC PN 5,008 561.7 561.7
WL-2177 PN-AEC Saltillo 23kV Load Incre (823) 561.7 561.7
AH2-317 Fredericksburg - North Lebanon 1 119 561.7 561.7
AF2-243 Titusville-Clark Summit 34.5 kV 206 561.7 1,484 561.7
WL-2208 PN-AEC Fairgrounds 23kV Load In (945) 561.7 561.7
AG1-281 Claysburg-HCR Tap 46 kV SIS PN 512 561.7 659 561.7
AF2-296 Madera 34.5 kV SL FAC PN 2,042 561.7 437 561.7
WL-2239 PN-AEC Centerville New 34.5kV DL (1,862) 561.7 (1,862) 561.7
AG1-100 Venango-Saegertown 34.5 kV FAC P 5,252 561.7 4,873 561.7
PA22-1033 Clark-Summit 34.5kV PA PN (300) 561.7 561.7
PA22-1034 Osterburg 23kV PA PN (300) 561.7 561.7
TO-1672 MAIT-PPL Foxhill-Shawnee 230kV l 393 561.7 561.7
TO-1673 MAIT-PPL Shawnee-Bushkill 230kV 257 561.7 561.7
Q1036 NYISO Mainesburg ESS FEAS PN 253 561.7 561.7
AF1-276 Lewis Run Pierce brook 230 kV S 363 561.7 561.7
AF1-278 Lewis Run Pierce Brooke 230 kV 199 561.7 561.7
AF1-277 Lewis Run Piercebrook 230 kV SI 199 561.7 561.7
AG1-053 Jackson-Three Mile Island 230 k 420 561.7 561.7
AG1-482 Hamilton 115 kV FAC ME 4,845 561.7 5,677 561.7
PA22-1216 Hooversville 23kV PA PN 50 561.7 561.7
AF1-006 Fairview East 34 kV FEAS PN 70 561.7 561.7
AF1-086 Madera-Westover South 115 kV SI 68 561.7 561.7
AG1-482 Hamilton 115 kV FEAS ME 274 561.7 561.7
AF1-100 Shawville-Moshannon 230 kV SIS 470 561.7 561.7
AG1-482 Hamilton 115 kV SIS ME 134 561.7 561.7
AF2-406 East Sayre 115 kV SIS PN 187 561.7 561.7
AF2-412 Mainesburg 115 kV SIS PN 187 561.7 1,106 561.7
AF2-381 Bedford North-Central City West 132 561.7 561.7
AG1-392C Gold 115 kV IV SIS PN 183 561.7 561.7
AG1-561 Roxbury-Greene 138 kV II SIS PN 183 561.7 643 561.7
AG1-560 Shade Gap-Roxbury 115 kV II SIS 183 561.7 561.7
AG1-549 Keystone 230 kV SIS PN 183 561.7 561.7
AG1-548 Erie South-Union City 115 kV SIS 183 561.7 561.7
AG1-455 Springboro-Venango Junction 115 153 561.7 561.7
AG1-480 Shawnee 34.5 kV SIS ME 134 561.7 1,161 561.7
AG1-301 Scarecrow 46 kV FEAS PN 137 561.7 561.7
AF1-106 East Sayre 34.5 kV FAC PN 3,269 561.7 3,824 561.7
AH1-357 Pierce Brook-Lewis Run 230kV II 97 561.7 561.7
AF1-039 Listonburg-Highpoint 24.9 kV FA 127 561.7 561.7
AF1-104 Erie West 34.5 kV FAC PN 2,676 561.7 561.7
AH2-420 Morgan Street 115kV FEAS PN 192 561.7 561.7
Total Generator Interconnection 437,824 561.7 449,176   561.7
Studies

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
OTHER REGULATORY ASSETS (Account 182.3)
  1. Report below the particulars (details) called for concerning other regulatory assets, including rate order docket number, if applicable.
  2. Minor items (5% of the Balance in Account 182.3 at end of period, or amounts less than $100,000 which ever is less), may be grouped by classes.
  3. For Regulatory Assets being amortized, show period of amortization.
CREDITS
Line No.
DescriptionAndPurposeOfOtherRegulatoryAssets
Description and Purpose of Other Regulatory Assets
(a)
OtherRegulatoryAssets
Balance at Beginning of Current Quarter/Year
(b)
IncreaseDecreaseInOtherRegulatoryAssets
Debits
(c)
OtherRegulatoryAssetsWrittenOffAccountCharged
Written off During Quarter/Year Account Charged
(d)
OtherRegulatoryAssetsWrittenOffRecovered
Written off During the Period Amount
(e)
OtherRegulatoryAssets
Balance at end of Current Quarter/Year
(f)
1
FAS 109 Accounting for Income Taxes
41,877,553
7,556,192
49,433,745
2
Vegetation Management
1,194,494
597,247
597,247
3
MAIT PJM 2022 Under Recovery (Amortized 2022-2024)
20,087,157
367,195
20,454,352
4
MAIT PJM 2023 Under Recovery (Amortized 2023-2025)
25,121,487
25,121,487
5
Deficient Accumulated Deferred Income Taxes Due to the Tax Cuts & Jobs Act (Amortized through 2037)
487,285
15,794
471,491
6
FAS109 NonPPA
535,372
234,919
770,291
44
TOTAL
64,181,861
33,279,793
613,041
96,848,613


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
MISCELLANEOUS DEFFERED DEBITS (Account 186)
  1. Report below the particulars (details) called for concerning miscellaneous deferred debits.
  2. For any deferred debit being amortized, show period of amortization in column (a)
  3. Minor item (1% of the Balance at End of Year for Account 186 or amounts less than $100,000, whichever is less) may be grouped by classes.
CREDITS
Line No.
Description of Miscellaneous Deferred Debits
(a)
Balance at Beginning of Year
(b)
Debits
(c)
Credits Account Charged
(d)
Credits Amount
(e)
Balance at End of Year
(f)
1
Goodwill
223,591,970
223,591,970
2
ST Credit Facility-Revolver
1,556,892
1,482,617
1,788,034
1,251,475
3
Collateral posted with PJM
216,300
1,505,700
1,722,000
4
Progress payments not included in CWIP
6,182,210
17,729,302
14,603,979
9,307,533
5
Captive Insurance -EIB, Inc.
83,168
437,415
10,070
510,513
47
Miscellaneous Work in Progress
48
Deferred Regulatory Comm. Expenses (See pages 350 - 351)
49
TOTAL
231,630,540
236,383,491


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
ACCUMULATED DEFERRED INCOME TAXES (Account 190)
  1. Report the information called for below concerning the respondent’s accounting for deferred income taxes.
  2. At Other (Specify), include deferrals relating to other income and deductions.
Line No.
DescriptionOfAccumulatedDeferredIncomeTax
Description and Location
(a)
AccumulatedDeferredIncomeTaxes
Balance at Beginning of Year
(b)
AccumulatedDeferredIncomeTaxes
Balance at End of Year
(c)
1
Electric
2
109,577,673
(a)
126,240,492
7
Other
8
TOTAL Electric (Enter Total of lines 2 thru 7)
109,577,673
126,240,492
9
Gas
15
Other
16
TOTAL Gas (Enter Total of lines 10 thru 15)
17.1
Other (Specify)
17
Other (Specify)
18
TOTAL (Acct 190) (Total of lines 8, 16 and 17)
109,577,673
126,240,492
Notes


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
FOOTNOTE DATA

(a) Concept: AccumulatedDeferredIncomeTaxes
Other Electric:
(a)
Balance at
Beginning of Year
(b)
Balance at
End of Year
(c)
263A MSC-Fed-Norm $ 130,405  $ 88,039 
263A-Fed-Norm 2,433,174  2,327,802 
Accelerated Tax Depr-Fed-Norm 23,887,549  23,277,364 
Accelerated Tax Depr-PA-Norm 585,580  1,625,376 
AMT Carryforward —  4,229,915 
AFUDC Debt-Fed-Norm 375,615  360,988 
AFUDC Debt-Fed-Norm-Incurred-CWIP 85,211  83,554 
AFUDC Debt-PA-Norm 9,241  43,242 
AFUDC Debt-PA-Norm-Incurred-CWIP 43,038  76,110 
AFUDC Equity/FAS 43-Fed-FT-Reversal-CWIP 3,669,183  4,713,289 
AFUDC Equity/FAS 43-PA-FT-Reversal-CWIP 1,240,900  1,505,357 
ARO-PA-Norm 12 
Asset Retirement Obligation Liability 37,332  39,198 
Capitalized Vertical Tree Trimming-Fed-Norm 1,271,582  1,213,247 
Capitalized Vertical Tree Trimming-PA-Norm —  14,013 
Charitable Contribution Carryforward 1,842  3,396 
CIAC-Fed-Norm 2,526,120  2,779,667 
CIAC-Fed-Norm-Incurred-CWIP 2,032,694  2,672,701 
CIAC-PA-Norm 1,201,935  1,231,790 
CIAC-PA-Norm-Incurred-CWIP 687,447  853,622 
Cost of Removal-Fed-Norm 1,083,852 1,062,779 
Cost of Removal-PA-Norm 159,568  296,475 
Federal NOL 315,781  1,325,948 
FAS 123R - Performance Shares-Fed-Norm 615  582 
FAS 123R - Restricted Stock-PA-Norm 31  10 
FAS 123R - RSU Capital-Fed-Norm 11,213  10,735 
G Overheads-Fed-Norm 805,809  767,572 
General Business Credit Carryforward 379,259  83,075
ITC FAS 109 754,647  701,769
Life Insurance-PA-Norm 315 101 
NOL Deferred Tax Asset - LT PA 3,551,187 5,204,097 
OPEBs-PA-Norm 39,671  13,647 
Other Reg Liability Misc 145,791  144,929 
Pensions-PA-Norm 7,737  2,590 
Pension EDCP-SERP Payments 1,098  — 
State Income Tax Deductible 401,723  — 
Step Up-PA-Norm 180  9,074 
Tax Interest Capitalized-Fed-Norm 3,671,532  4,759,381 
Tax Interest Capitalized-Fed-Norm-Incurred-CWIP 7,251,030  9,049,653 
Tax Interest Capitalized-PA-Norm 1,353,611  1,575,649 
Tax Interest Capitalized-PA-Norm-Incurred-CWIP 2,490,203  2,854,100 
Tax UoP Repair Exp-Fed-Norm 3,001,703  2,849,334 
Tax UoP Repair Exp-Fed-Norm-Incurred-CWIP 3,063,250  3,003,691 
Tax UoP Repair Exp-PA-FT 310,618  292,951 
Tax UoP Repair Exp-PA-Norm 409,612  823,885 
Tax UoP Repair Exp-PA-Norm-Incurred-CWIP 415,894  884,209 
Valuation Allowance Charitable Carryforward FD —  558 
**PA 2023 – 2031 corporate income tax gradual rate reduction 9.99% - 4.99% 39,732,886  43,385,016 
$ 109,577,673  $ 126,240,492 
Footnote
** For tax years beginning on or after January 1, 2023, the corporate statutory income tax rate is decreased
    to 8.99% from 9.99%, thereafter reduced by 0.5% annually through tax year 2031 to end at 4.99%.

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
CAPITAL STOCKS (Account 201 and 204)
  1. Report below the particulars (details) called for concerning common and preferred stock at end of year, distinguishing separate series of any general class. Show separate totals for common and preferred stock. If information to meet the stock exchange reporting requirement outlined in column (a) is available from the SEC 10-K Report Form filing, a specific reference to report form (i.e., year and company title) may be reported in column (a) provided the fiscal years for both the 10-K report and this report are compatible.
  2. Entries in column (b) should represent the number of shares authorized by the articles of incorporation as amended to end of year.
  3. Give details concerning shares of any class and series of stock authorized to be issued by a regulatory commission which have not yet been issued.
  4. The identification of each class of preferred stock should show the dividend rate and whether the dividends are cumulative or noncumulative.
  5. State in a footnote if any capital stock that has been nominally issued is nominally outstanding at end of year.
  6. Give particulars (details) in column (a) of any nominally issued capital stock, reacquired stock, or stock in sinking and other funds which is pledged, stating name of pledgee and purpose of pledge.
Line No.
Class and Series of Stock and Name of Stock Series
(a)
Number of Shares Authorized by Charter
(b)
Par or Stated Value per Share
(c)
Call Price at End of Year
(d)
Outstanding per Bal. Sheet (Total amount outstanding without reduction for amounts held by respondent) Shares
(e)
Outstanding per Bal. Sheet (Total amount outstanding without reduction for amounts held by respondent) Amount
(f)
Held by Respondent As Reacquired Stock (Acct 217) Shares
(g)
Held by Respondent As Reacquired Stock (Acct 217) Cost
(h)
Held by Respondent In Sinking and Other Funds Shares
(i)
Held by Respondent In Sinking and Other Funds Amount
(j)
1
Common Stock (Account 201)
2
1,778,113,636
3
Total
1,778,113,636
4
Preferred Stock (Account 204)
5
6
7
8
Total
1
Capital Stock (Accounts 201 and 204) - Data Conversion
2
3
4
5
Total


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

2024-03-26
Year/Period of Report

End of:
2023
/
Q4
Other Paid-in Capital
1. Report below the balance at the end of the year and the information specified below for the respective other paid-in capital accounts. Provide a subheading for each account and show a total for the account, as well as a total of all accounts for reconciliation with the balance sheet, page 112. Explain changes made in any account during the year and give the accounting entries effecting such change.
  1. Donations Received from Stockholders (Account 208) - State amount and briefly explain the origin and purpose of each donation.
  2. Reduction in Par or Stated Value of Capital Stock (Account 209) - State amount and briefly explain the capital changes that gave rise to amounts reported under this caption including identification with the class and series of stock to which related.
  3. Gain or Resale or Cancellation of Reacquired Capital Stock (Account 210) - Report balance at beginning of year, credits, debits, and balance at end of year with a designation of the nature of each credit and debit identified by the class and series of stock to which related.
  4. Miscellaneous Paid-In Capital (Account 211) - Classify amounts included in this account according to captions that, together with brief explanations, disclose the general nature of the transactions that gave rise to the reported amounts.
Line No.
Item
(a)
Amount
(b)
1
DonationsReceivedFromStockholdersAbstract
Donations Received from Stockholders (Account 208)
2
DonationsReceivedFromStockholders
Beginning Balance Amount
3
IncreasesDecreasesFromSalesOfDonationsReceivedFromStockholders
Increases (Decreases) from Sales of Donations Received from Stockholders
4
DonationsReceivedFromStockholders
Ending Balance Amount
5
ReductionInParOrStatedValueOfCapitalStockAbstract
Reduction in Par or Stated Value of Capital Stock (Account 209)
6
ReductionInParOrStatedValueOfCapitalStock
Beginning Balance Amount
7
IncreasesDecreasesDueToReductionsInParOrStatedValueOfCapitalStock
Increases (Decreases) Due to Reductions in Par or Stated Value of Capital Stock
8
ReductionInParOrStatedValueOfCapitalStock
Ending Balance Amount
9
GainOrResaleOrCancellationOfReacquiredCapitalStockAbstract
Gain or Resale or Cancellation of Reacquired Capital Stock (Account 210)
10
GainOnResaleOrCancellationOfReacquiredCapitalStock
Beginning Balance Amount
11
IncreasesDecreasesFromGainOrResaleOrCancellationOfReacquiredCapitalStock
Increases (Decreases) from Gain or Resale or Cancellation of Reacquired Capital Stock
12
GainOnResaleOrCancellationOfReacquiredCapitalStock
Ending Balance Amount
13
MiscellaneousPaidInCapitalAbstract
Miscellaneous Paid-In Capital (Account 211)
14
MiscellaneousPaidInCapital
Beginning Balance Amount
15
IncreasesDecreasesDueToMiscellaneousPaidInCapital
Increases (Decreases) Due to Miscellaneous Paid-In Capital
16
MiscellaneousPaidInCapital
Ending Balance Amount
17
OtherPaidInCapitalAbstract
Historical Data - Other Paid in Capital
18
OtherPaidInCapitalDetail
Beginning Balance Amount
19
IncreasesDecreasesInOtherPaidInCapital
Increases (Decreases) in Other Paid-In Capital
20
OtherPaidInCapitalDetail
Ending Balance Amount
40
OtherPaidInCapital
Total


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
CAPITAL STOCK EXPENSE (Account 214)
  1. Report the balance at end of the year of discount on capital stock for each class and series of capital stock.
  2. If any change occurred during the year in the balance in respect to any class or series of stock, attach a statement giving particulars (details) of the change. State the reason for any charge-off of capital stock expense and specify the account charged.
Line No.
NameOfClassAndSeriesOfStock
Class and Series of Stock
(a)
CapitalStockExpense
Balance at End of Year
(b)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
LONG-TERM DEBT (Account 221, 222, 223 and 224)
  1. Report by Balance Sheet Account the details concerning long-term debt included in Accounts 221, Bonds, 222, Reacquired Bonds, 223, Advances from Associated Companies, and 224, Other Long-Term Debt.
  2. For bonds assumed by the respondent, include in column (a) the name of the issuing company as well as a description of the bonds, and in column (b) include the related account number.
  3. For Advances from Associated Companies, report separately advances on notes and advances on open accounts. Designate demand notes as such. Include in column (a) names of associated companies from which advances were received, and in column (b) include the related account number.
  4. For receivers' certificates, show in column (a) the name of the court and date of court order under which such certificates were issued, and in column (b) include the related account number.
  5. In a supplemental statement, give explanatory details for Accounts 223 and 224 of net changes during the year. With respect to long-term advances, show for each company: (a)principal advanced during year (b) interest added to principal amount, and (c) principal repaid during year. Give Commission authorization numbers and dates.
  6. If the respondent has pledged any of its long-term debt securities, give particulars (details) in a footnote, including name of the pledgee and purpose of the pledge.
  7. If the respondent has any long-term securities that have been nominally issued and are nominally outstanding at end of year, describe such securities in a footnote.
  8. If interest expense was incurred during the year on any obligations retired or reacquired before end of year, include such interest expense in column (m). Explain in a footnote any difference between the total of column (m) and the total Account 427, Interest on Long-Term Debt and Account 430, Interest on Debt to Associated Companies.
  9. Give details concerning any long-term debt authorized by a regulatory commission but not yet issued.
Line No.
ClassAndSeriesOfObligationCouponRateDescription
Class and Series of Obligation, Coupon Rate (For new issue, give commission Authorization numbers and dates)
(a)
RelatedAccountNumber
Related Account Number
(b)
Principal Amount of Debt Issued
(c)
LongTermDebtIssuanceExpensePremiumOrDiscount
Total Expense, Premium or Discount
(d)
LongTermDebtIssuanceExpenses
Total Expense
(e)
LongTermDebtPremium
Total Premium
(f)
LongTermDebtDiscount
Total Discount
(g)
NominalDateOfIssue
Nominal Date of Issue
(h)
DateOfMaturity
Date of Maturity
(i)
AmortizationPeriodStartDate
AMORTIZATION PERIOD Date From
(j)
AmortizationPeriodEndDate
AMORTIZATION PERIOD Date To
(k)
Outstanding (Total amount outstanding without reduction for amounts held by respondent)
(l)
Interest for Year Amount
(m)
1
Bonds (Account 221)
2
3
4
5
Subtotal
6
Reacquired Bonds (Account 222)
7
8
9
10
Subtotal
11
Advances from Associated Companies (Account 223)
12
13
14
15
Subtotal
16
Other Long Term Debt (Account 224)
17
4.10% Senior Notes - 2018 issuance
450,000,000
3,980,801
112,500
05/10/2018
05/15/2028
05/10/2018
05/15/2028
450,000,000
18,450,000
18
(a)
4.10% Senior Notes - 2021 issuance
150,000,000
1,282,625
14,337,000
05/24/2021
05/15/2028
05/24/2021
05/15/2028
150,000,000
6,150,000
19
3.60% Senior Notes
125,000,000
888,456
03/31/2020
04/01/2032
03/31/2020
04/01/2032
125,000,000
4,500,000
20
3.70% Senior Notes
125,000,000
888,456
03/31/2020
04/01/2035
03/31/2020
04/01/2035
125,000,000
4,625,000
21
(b)
5.39% Senior Notes (Docket No ES21-17-000)
175,000,000
1,252,919
02/27/2023
03/01/2033
02/27/2023
03/01/2033
175,000,000
7,965,222
22
Subtotal
1,025,000,000
8,293,257
14,337,000
112,500
1,025,000,000
41,690,222
33 TOTAL
1,025,000,000
1,025,000,000
(c)
41,690,222


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
FOOTNOTE DATA

(a) Concept: ClassAndSeriesOfObligationCouponRateDescription
Pursuant to order at docket #ES21-17-000 dated 3/1/2021, MAIT received authorization to issue long-term debt in the amount of $325,000,000. To date $325,000,000 has been issued, with authorization to issue additional long-term debt in the amount of $0 remaining. Authorization expired 2/28/2023.
(b) Concept: ClassAndSeriesOfObligationCouponRateDescription
Account 224 - Changes to this account were due to debt issued or (retired) as follows:
5.39% Senior Notes 175,000,000 
$ 175,000,000 
(c) Concept: InterestExpenseOnLongTermDebtIssued
Reconciliation of Column (m) to accounts 427 & 430
Account 427 Interest $ 41,690,222 
Account 430 Interest 1,590,177 
Total Interest in accounts 427 & 430 $ 43,280,399 
Total Interest Form 1 Page 257 Column (m) $ 41,690,222 
Interest on short-term money pool borrowings 1,590,177 
$ 43,280,399 

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
RECONCILIATION OF REPORTED NET INCOME WITH TAXABLE INCOME FOR FEDERAL INCOME TAXES
  1. Report the reconciliation of reported net income for the year with taxable income used in computing Federal income tax accruals and show computation of such tax accruals. Include in the reconciliation, as far as practicable, the same detail as furnished on Schedule M-1 of the tax return for the year. Submit a reconciliation even though there is no taxable income for the year. Indicate clearly the nature of each reconciling amount.
  2. If the utility is a member of a group which files a consolidated Federal tax return, reconcile reported net income with taxable net income as if a separate return were to be field, indicating, however, intercompany amounts to be eliminated in such a consolidated return. State names of group member, tax assigned to each group member, and basis of allocation, assignment, or sharing of the consolidated tax among the group members.
  3. A substitute page, designed to meet a particular need of a company, may be used as Long as the data is consistent and meets the requirements of the above instructions. For electronic reporting purposes complete Line 27 and provide the substitute Page in the context of a footnote.
Line No.
Particulars (Details)
(a)
Amount
(b)
1
Net Income for the Year (Page 117)
150,712,236
2
Reconciling Items for the Year
3
4
Taxable Income Not Reported on Books
5
(a)
7,312,411
9
Deductions Recorded on Books Not Deducted for Return
10
(b)
111,615,861
14
Income Recorded on Books Not Included in Return
15
(c)
19,253,161
19
Deductions on Return Not Charged Against Book Income
20
(d)
253,450,742
27
Federal Tax Net Income
3,063,395
28
Show Computation of Tax:
29
Net Liability @ 21%
643,313
30
Basis of Allocation
31
(e)
See Footnote


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
FOOTNOTE DATA

(a) Concept: TaxableIncomeNotReportedOnBooks
TAXABLE INCOME NOT REPORTED ON BOOKS
AFUDC Equity/FAS 43-Fed-FT-Reversal-CWIP $ 5,918,479 
CIAC-Fed-Norm-Reversal-CWIP 1,393,932 
$ 7,312,411 
(b) Concept: DeductionsRecordedOnBooksNotDeductedForReturn
DEDUCTIONS RECORDED ON BOOKS NOT DEDUCTED FOR RETURN
263A Miscellaneous-Fed-Norm $ 742,322 
263A-Fed-Norm 844,998 
Accelerated Tax Depreciation-Fed-FT 404,412 
AFUDC Debt-Fed-Norm-Reversal-CWIP 2,367,717 
ARO-Fed-Norm 229 
Asset Retirement Obligation Liability 8,629 
Capitalized Vertical Tree Trimming-Fed-Norm 554,812 
Casualty Loss-Fed-Norm 1,378,762 
Current Income Taxes 805,880 
Deferred Gain-Fed-Norm 9,335 
Deferred Income Taxes 46,452,990 
FAS 123R - Performance Shares-Fed-Norm 299 
FAS 123R - RSU Capital-Fed-Norm 4,266 
Federal NOL 4,810,320 
G Overheads-Fed-Norm 448,916 
Lease Right of Use Asset & Liability 571,222 
Meals and Entertainment - 50% Disallowance 39,183 
Other Regulatory Liability Miscellaneous 4,286 
Other Regulatory Asset 45,200 
Recovery of Vegetation Management for Transmission Companies 597,247 
Step Up-Fed-Norm 214,752 
Tax Interest Capitalized-Fed-Norm 1,274,371 
Tax Interest Capitalized-Fed-Norm-Incurred-CWIP 8,704,571 
Tax UoP Repair Expense-Fed-Norm-Reversal-CWIP 41,331,142 
$ 111,615,861 
(c) Concept: IncomeRecordedOnBooksNotIncludedInReturn
INCOME RECORDED ON BOOKS NOT INCLUDED IN RETURN
AFUDC Equity/FAS 43-Fed-FT $ (4,591,363)
AFUDC Equity-Perm (12,677,953)
CIAC-Fed-Norm (490,228)
CIAC-Fed-Norm-Reversal-CWIP (1,393,932)
Investment Tax Credit (99,685)
$ (19,253,161)
(d) Concept: DeductionsOnReturnNotChargedAgainstBookIncome
DEDUCTIONS ON RETURN NOT CHARGED AGAINST BOOK INCOME
Accelerated Tax Depreciation-Fed-Norm $ (83,987,129)
AFUDC Debt-Fed-Norm (1,939,644)
AFUDC Debt-Fed-Norm-Incurred-CWIP (5,703,917)
Corporate support overhead cost adjustment per time study results (761,387)
Cost of Removal-Fed-FT (10,096,393)
Cost of Removal-Fed-Norm (18,154,962)
Deferred Charge-EIB (427,345)
FAS 123R - Restricted Stock-Fed-Norm (443)
Life Insurance-Fed-Norm (12,601)
OPEBs-Fed-Norm (364,105)
Other Basis Differences-Fed-Norm (111,345)
Pensions-Fed-Norm (82,948)
PJM Receivable (41,127,402)
Tax Interest Capitalized-Fed-Norm-Reversal-CWIP (3,938,027)
Tax UoP Repair Expense-Fed-Norm (35,585,039)
Tax UoP Repair Expense-Fed-Norm-Incurred-CWIP (50,550,000)
Year-End Additional Temp Adjustments L/T (608,055)
$ (253,450,742)
(e) Concept: ComputationOfTaxDescription
Basis of Allocation:
Respondent is included in the consolidated Federal Income Tax Return
filed by FirstEnergy Corp., which includes its wholly owned subsidiaries.
Federal income tax liability is allocated on the basis of each
member's United States Federal tax liability. The total Federal
Income Tax liability of each member will be no more than if it
were to file an individual tax return. This is in accordance with
IRC Section 1552 and Treasury Regulation 1.1502-33(d)(3) and 1.1552-1(a)(2).

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
TAXES ACCRUED, PREPAID AND CHARGES DURING YEAR
  1. Give particulars (details) of the combined prepaid and accrued tax accounts and show the total taxes charged to operations and other accounts during the year. Do not include gasoline and other sales taxes which have been charged to the accounts to which the taxed material was charged. If the actual, or estimated amounts of such taxes are known, show the amounts in a footnote and designate whether estimated or actual amounts.
  2. Include on this page, taxes paid during the year and charged direct to final accounts, (not charged to prepaid or accrued taxes.) Enter the amounts in both columns (g) and (h). The balancing of this page is not affected by the inclusion of these taxes.
  3. Include in column (g) taxes charged during the year, taxes charged to operations and other accounts through (a) accruals credited to taxes accrued, (b)amounts credited to proportions of prepaid taxes chargeable to current year, and (c) taxes paid and charged direct to operations or accounts other than accrued and prepaid tax accounts.
  4. List the aggregate of each kind of tax in such manner that the total tax for each State and subdivision can readily be ascertained.
  5. If any tax (exclude Federal and State income taxes) covers more than one year, show the required information separately for each tax year, identifying the year in column (d).
  6. Enter all adjustments of the accrued and prepaid tax accounts in column (i) and explain each adjustment in a foot- note. Designate debit adjustments by parentheses.
  7. Do not include on this page entries with respect to deferred income taxes or taxes collected through payroll deductions or otherwise pending transmittal of such taxes to the taxing authority.
  8. Report in columns (l) through (o) how the taxes were distributed. Report in column (o) only the amounts charged to Accounts 408.1 and 409.1 pertaining to electric operations. Report in column (l) the amounts charged to Accounts 408.1 and 409.1 pertaining to other utility departments and amounts charged to Accounts 408.2 and 409.2. Also shown in column (o) the taxes charged to utility plant or other balance sheet accounts.
  9. For any tax apportioned to more than one utility department or account, state in a footnote the basis (necessity) of apportioning such tax.
BALANCE AT BEGINNING OF YEAR BALANCE AT END OF YEAR DISTRIBUTION OF TAXES CHARGED
Line No.
DescriptionOfTaxesAccruedPrepaidAndCharged
Kind of Tax (See Instruction 5)
(a)
TypeOfTax
Type of Tax
(b)
TaxJurisdiction
State
(c)
TaxYear
Tax Year
(d)
TaxesAccrued
Taxes Accrued (Account 236)
(e)
PrepaidTaxes
Prepaid Taxes (Include in Account 165)
(f)
TaxesCharged
Taxes Charged During Year
(g)
TaxesPaid
Taxes Paid During Year
(h)
TaxAdjustments
Adjustments
(i)
TaxesAccrued
Taxes Accrued (Account 236)
(j)
PrepaidTaxes
Prepaid Taxes (Included in Account 165)
(k)
TaxesAccruedPrepaidAndCharged
Electric (Account 408.1, 409.1)
(l)
IncomeTaxesExtraordinaryItems
Extraordinary Items (Account 409.3)
(m)
AdjustmentsToRetainedEarnings
Adjustment to Ret. Earnings (Account 439)
(n)
TaxesIncurredOther
Other
(o)
1
0
0
0
0
2
Subtotal Federal Tax
0
0
0
0
0
0
0
0
0
0
0
3
Subtotal State Tax
0
0
0
0
0
0
0
0
0
0
0
4
Subtotal Local Tax
0
0
0
0
0
0
0
0
0
0
0
5
Subtotal Other Tax
0
0
0
0
0
0
0
0
0
0
0
6
MD Property Tax - 2022
Property Tax
MD
2022
0
49,637
49,937
300
0
0
49,937
7
MD Property Tax - 2023
Property Tax
MD
2023
0
0
46,738
0
46,738
0
46,738
8
Subtotal Property Tax
0
49,637
96,675
300
0
46,738
0
96,675
0
0
0
9
Local Real Estate - 2022
Real Estate Tax
PA
2022
0
0
35,467
35,467
0
35,467
10
Local Real Estate - 2023
Real Estate Tax
PA
2023
0
0
53,673
53,673
0
53,673
11
Local Real Estate - 2023
Real Estate Tax
OH
2023
0
0
0
0
0
25,191
25,191
12
Subtotal Real Estate Tax
0
0
89,140
89,140
0
0
0
114,331
0
0
25,191
13
Subtotal Unemployment Tax
0
0
0
0
0
0
0
0
0
0
0
14
Subtotal Sales And Use Tax
0
0
0
0
0
0
0
0
0
0
0
15
Federal Income Tax
Income Tax
2023
0
(a)
3,992,212
1,273,169
2,378,425
0
(b)
340,618
124,184
(c)
1,397,353
16
PA Corp Net Income
Income Tax
PA
2023
286,298
387,425
467,291
178,715
321,867
1,069,000
1,124,582
(d)
657,291
17
Subtotal Income Tax
286,298
4,379,637
805,878
2,199,710
0
321,867
1,409,618
1,248,766
0
0
2,054,644
18
Federal Excise Tax
Excise Tax
2023
0
0
2,372
2,372
0
2,372
19
Subtotal Excise Tax
0
0
2,372
2,372
0
0
0
2,372
0
0
0
20
Subtotal Fuel Tax
0
0
0
0
0
0
0
0
0
0
0
21
Subtotal Federal Insurance Tax
0
0
0
0
0
0
0
0
0
0
0
22
Subtotal Franchise Tax
0
0
0
0
0
0
0
0
0
0
0
23
Subtotal Miscellaneous Other Tax
0
0
0
0
0
0
0
0
0
0
0
24
Subtotal Other Federal Tax
0
0
0
0
0
0
0
0
0
0
0
25
Subtotal Other State Tax
0
0
0
0
0
0
0
0
0
0
0
26
Subtotal Other Property Tax
0
0
0
0
0
0
0
0
0
0
0
27
Subtotal Other Use Tax
0
0
0
0
0
0
0
0
0
0
0
28
Subtotal Other Advalorem Tax
0
0
0
0
0
0
0
0
0
0
0
29
Subtotal Other License And Fees Tax
0
0
0
0
0
0
0
0
0
0
0
30
FICA
Payroll Tax
2023
0
0
0
571,467
571,467
31
Subtotal Payroll Tax
0
0
0
0
0
0
0
571,467
0
0
571,467
32
Subtotal Advalorem Tax
0
0
0
0
0
0
0
0
0
0
0
33
Subtotal Other Allocated Tax
0
0
0
0
0
0
0
0
0
0
0
34
Subtotal Severance Tax
0
0
0
0
0
0
0
0
0
0
0
35
Subtotal Penalty Tax
0
0
0
0
0
0
0
0
0
0
0
36
Subtotal Other Taxes And Fees
0
0
0
0
0
0
0
0
0
0
0
40
TOTAL
286,298
4,429,274
994,065
2,107,898
0
368,605
1,409,618
463,921
0
0
1,457,986


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
FOOTNOTE DATA

(a) Concept: PrepaidTaxes
Reclassed to Account 146 due to filing a Federal Consolidated Return.
(b) Concept: PrepaidTaxes
Reclassed to Account 146 due to filing a Federal Consolidated Return.
(c) Concept: TaxesIncurredOther
$1,397,353 offset to Account 409.2.
(d) Concept: TaxesIncurredOther
$657,291 offset to Account 409.2.

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
ACCUMULATED DEFERRED INVESTMENT TAX CREDITS (Account 255)

Report below information applicable to Account 255. Where appropriate, segregate the balances and transactions by utility and nonutility operations. Explain by footnote any correction adjustments to the account balance shown in column (g). Include in column (i) the average period over which the tax credits are amortized.

Deferred for Year Allocations to Current Year's Income
Line No.
Account Subdivisions
(a)
Balance at Beginning of Year
(b)
Account No.
(c)
Amount
(d)
Account No.
(e)
Amount
(f)
Adjustments
(g)
Balance at End of Year
(h)
Average Period of Allocation to Income
(i)
ADJUSTMENT EXPLANATION
(j)
1
Electric Utility
2
3%
3
4%
1,930,730
99,685
1,831,045
18.37
4
7%
5
10%
8
TOTAL Electric (Enter Total of lines 2 thru 7)
1,930,730
99,685
1,831,045
9
Other (List separately and show 3%, 4%, 7%, 10% and TOTAL)
10
`
47 OTHER TOTAL
48 GRAND TOTAL
1,930,730
99,685
1,831,045


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
OTHER DEFERRED CREDITS (Account 253)
  1. Report below the particulars (details) called for concerning other deferred credits.
  2. For any deferred credit being amortized, show the period of amortization.
  3. Minor items (5% of the Balance End of Year for Account 253 or amounts less than $100,000, whichever is greater) may be grouped by classes.
DEBITS
Line No.
Description and Other Deferred Credits
(a)
Balance at Beginning of Year
(b)
Contra Account
(c)
Amount
(d)
Credits
(e)
Balance at End of Year
(f)
1
Misc Def Credits Other
19,769
19,769
47
TOTAL
19,769
19,769


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report


End of:
2023
/
Q4
ACCUMULATED DEFERRED INCOME TAXES - ACCELERATED AMORTIZATION PROPERTY (Account 281)
  1. Report the information called for below concerning the respondent’s accounting for deferred income taxes rating to amortizable property.
  2. For other (Specify),include deferrals relating to other income and deductions.
  3. Use footnotes as required.
CHANGES DURING YEAR ADJUSTMENTS
Debits Credits
Line No.
Account
(a)
Balance at Beginning of Year
(b)
Amounts Debited to Account 410.1
(c)
Amounts Credited to Account 411.1
(d)
Amounts Debited to Account 410.2
(e)
Amounts Credited to Account 411.2
(f)
Account Credited
(g)
Amount
(h)
Account Debited
(i)
Amount
(j)
Balance at End of Year
(k)
1
Accelerated Amortization (Account 281)
2
Electric
3
Defense Facilities
4
Pollution Control Facilities
5
Other
5.1
Other
5.2
Other
8
TOTAL Electric (Enter Total of lines 3 thru 7)
9
Gas
10
Defense Facilities
11
Pollution Control Facilities
12
Other
12.1
Other
12.2
Other
15
TOTAL Gas (Enter Total of lines 10 thru 14)
16
Other
16.1
Other
16.2
Other
17
TOTAL (Acct 281) (Total of 8, 15 and 16)
18
Classification of TOTAL
19
Federal Income Tax
20
State Income Tax
21
Local Income Tax


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
ACCUMULATED DEFERRED INCOME TAXES - OTHER PROPERTY (Account 282)
  1. Report the information called for below concerning the respondent’s accounting for deferred income taxes rating to property not subject to accelerated amortization.
  2. For other (Specify),include deferrals relating to other income and deductions.
  3. Use footnotes as required.
CHANGES DURING YEAR ADJUSTMENTS
Debits Credits
Line No.
Account
(a)
Balance at Beginning of Year
(b)
Amounts Debited to Account 410.1
(c)
Amounts Credited to Account 411.1
(d)
Amounts Debited to Account 410.2
(e)
Amounts Credited to Account 411.2
(f)
Account Credited
(g)
Amount
(h)
Account Debited
(i)
Amount
(j)
Balance at End of Year
(k)
1 Account 282
2
Electric
352,269,578
69,115,146
24,882,567
182
40,419,200
182
42,540,910
398,623,867
3
Gas
4
Other (Specify)
5
Total (Total of lines 2 thru 4)
352,269,578
69,115,146
24,882,567
40,419,200
42,540,910
398,623,867
6
7
8
9
TOTAL Account 282 (Total of Lines 5 thru 8)
352,269,578
69,115,146
24,882,567
40,419,200
42,540,910
398,623,867
10
Classification of TOTAL
11
Federal Income Tax
255,729,265
46,929,785
18,291,861
11,687,454
18,153,275
290,833,010
12
State Income Tax
96,540,313
22,185,361
6,590,706
28,731,746
24,387,635
107,790,857
13
Local Income Tax


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
ACCUMULATED DEFERRED INCOME TAXES - OTHER (Account 283)
  1. Report the information called for below concerning the respondent's accounting for deferred income taxes relating to amounts recorded in Account 283.
  2. For other (Specify),include deferrals relating to other income and deductions.
  3. Provide in the space below explanations for Page 276. Include amounts relating to insignificant items listed under Other.
  4. Use footnotes as required.
CHANGES DURING YEAR ADJUSTMENTS
Debits Credits
Line No.
Account
(a)
Balance at Beginning of Year
(b)
Amounts Debited to Account 410.1
(c)
Amounts Credited to Account 411.1
(d)
Amounts Debited to Account 410.2
(e)
Amounts Credited to Account 411.2
(f)
Account Credited
(g)
Amount
(h)
Account Debited
(i)
Amount
(j)
Balance at End of Year
(k)
1 Account 283
2
Electric
3
34,106,741
19,848,316
5,497,001
6,347,313
9,836,444
(a)
51,947,187
9 TOTAL Electric (Total of lines 3 thru 8)
34,106,741
19,848,316
5,497,001
6,347,313
9,836,444
51,947,187
10
Gas
11
12
13
14
15
16
17 TOTAL Gas (Total of lines 11 thru 16)
18 TOTAL Other
19 TOTAL (Acct 283) (Enter Total of lines 9, 17 and 18)
34,106,741
19,848,316
5,497,001
6,347,313
9,836,444
51,947,187
20
Classification of TOTAL
21
Federal Income Tax
23,242,153
13,849,102
3,873,502
3,468,487
6,380,897
36,130,163
22
State Income Tax
10,864,588
5,999,214
1,623,499
2,878,826
3,455,547
15,817,024
23
Local Income Tax
NOTES


FOOTNOTE DATA

(a) Concept: AccumulatedDeferredIncomeTaxesOther
Account Subdivisions
(a)
Balance at
Beginning
of Year
(b)
Amounts
Debited to
Account 410.1
(c)
Amounts
Credited to
Account 411.1
(d)
Amounts
Debited to
Account 410.2
(e)
Amounts
Credited to
Acct 411.2
(f)
Acct
Credit
(g)
Debits
Amount
(h)
Acct
Debit
(i)
Credits
Amount
(j)
Balance at
End of Year
(k)
263A MSC-PA-Norm 5,669  182 15,016  182 10,690  1,343 
263A-PA-Norm 113,046  182 249,065  182 177,390  41,371 
Accelerated Tax Depr-Fed-FT 1,809,189  182 350,624  182 480,463  1,939,028 
Accelerated Tax Depr-PA-FT 819,622  182 351,801  182 342,213  810,034 
AFUDC Debt-Fed-Norm-Reversal-CWIP 17,772  182 1,416  182 1,070  17,426 
AFUDC Debt-PA-Norm-Reversal-CWIP 26,820  182 29,376  190 55,425  52,869 
AFUDC Equity/FAS 43-Fed-FT 3,223,559  182 871,207  182 1,802,816  4,155,168 
AFUDC Equity/FAS 43-Fed-FT-Incurred-CWIP 5,916,087  182 565,691  182 1,471,049  6,821,445 
AFUDC Equity/FAS 43-PA-FT 1,090,192  182 550,727  182 787,636  1,327,101 
AFUDC Equity/FAS 43-PA-FT-Incurred-CWIP 2,000,792  182 592,833  182 770,713  2,178,672 
Capitalized Vertical Tree Trimming-PA-Norm 33,974  182 166,021  182/190 132,047 
Casualty Loss-Fed-Norm 231,565  182 25,061  182 92,964  299,468 
Casualty Loss-PA-Norm 20,391  182 51,858  182 36,999  5,532 
Charitable Contribution State & Local 2,340  2,075  994  190 3,421 
CIAC-Fed-Norm-Reversal-CWIP 1,496,243  1,726,342  1,086,335  2,136,250 
CIAC-PA-Norm-Reversal-CWIP 506,022  856,984  680,719  182 125,971  182 125,972  682,288 
Cost of Removal-Fed-FT 1,639,278  182 264,180  182 928,892  2,303,990 
Cost of Removal-PA-FT 554,396  182 177,953  182 359,419  735,862 
Deferred Charge-EIB 23,374  132,913  14,837  141,450 
FAS 109 Gross-Up on Non-Property Items (see below) 136,937  9,492  182 24,375  182 8,583  130,637 
FAS 123R - Performance Shares-PA-Norm 28  182 62  182 44  10 
FAS 123R - Restricted Stock-Fed-Norm 720  182 84  182 44  680 
FAS 123R - RSU Capital-PA-Norm 495  182 1,135  182 811  171 
FIN 48 - R&D Credit 151,703  151,703 
G Overheads-PA-Norm 35,050  182 82,712  182 59,413  11,751 
Lease ROU Asset & Liability 2,275,660  120,127  310,382  2,085,405 
Life Insurance-Fed-Norm 5,207  182 1,161  182 441  4,487 
OPEBs-Fed-Norm 900,671  182 97,629  182 58,860  861,902 
Other Basis Differences-Fed-Norm 1,000,301  182 123,501  182 62,391  939,191 
Other Basis Differences-PA-Norm 40,902  182 190,944  182 269,636  119,594 
Pensions Expense 24,268  1,630  25,899  182
Pensions-Fed-Norm 177,984  182 26,074  182 17,852  169,762 
PJM Receivable 1,250,104  13,740,330  2,362,690  182 12,627,743 
Recovery of Veg Mgmt for Transmission Companies 335,678  29,969  200,167  165,480 
Post Retirement Benefits SFAS 106 Accrual 2,347  158  2,504  182
State Income Tax Deductible 190 182,578  182,578 
Tax Interest Capitalized-Fed-Norm-Reversal-CWIP 4,138,486  2,056,646  400,566  182 1,422  182 1,880  5,795,024 
Tax Interest Capitalized-PA-Norm-Reversal-CWIP 1,348,755  988,656  397,388  182 500,692  182 307,313  1,746,644 
Tax UoP Repair Exp-Fed-Norm-Reversal-CWIP 2,269,885  182 180,828  182 136,695  2,225,752 
Tax UoP Repair Exp-PA-Norm-Reversal-CWIP 481,229  182 724,471  182 1,154,144  910,902 
Year-End Additional Temp Adjustments L/T 182,994  14,520  168,474 
34,106,741  19,848,316  5,497,001  6,347,313  9,836,444  51,947,187 
Footnote:
This line item represents the total FAS 109 gross-up of deferred income taxes recorded on non-property
book-to-tax timing differences due to the change in the Federal corporate income tax rate from 35% to 21%.

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
OTHER REGULATORY LIABILITIES (Account 254)
  1. Report below the particulars (details) called for concerning other regulatory liabilities, including rate order docket number, if applicable.
  2. Minor items (5% of the Balance in Account 254 at end of period, or amounts less than $100,000 which ever is less), may be grouped by classes.
  3. For Regulatory Liabilities being amortized, show period of amortization.
DEBITS
Line No.
Description and Purpose of Other Regulatory Liabilities
(a)
Balance at Beginning of Current Quarter/Year
(b)
Account Credited
(c)
Amount
(d)
Credits
(e)
Balance at End of Current Quarter/Year
(f)
1
FAS Accounting for Income Taxes
754,647
52,878
701,769
2
Deferred Tax Remeasurement
40,078,650
2,630,779
42,709,429
3
MAIT PJM 2021 Over Recovery (Amortized 2021-2023)
15,593,518
15,593,518
4
Excess Deferred Income Taxes due to the Tax Cuts and Jobs Act and State Tax Rate Changes (Amortized via ARAM over remaining book life of assets)
113,498,083
4,118,489
117,616,572
5
Other amounts expected to be refunded
518,788
4,288
523,076
41 TOTAL
170,443,686
15,646,396
6,753,556
161,550,846


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
Electric Operating Revenues
  1. The following instructions generally apply to the annual version of these pages. Do not report quarterly data in columns (c), (e), (f), and (g). Unbilled revenues and MWH related to unbilled revenues need not be reported separately as required in the annual version of these pages.
  2. Report below operating revenues for each prescribed account, and manufactured gas revenues in total.
  3. Report number of customers, columns (f) and (g), on the basis of meters, in addition to the number of flat rate accounts; except that where separate meter readings are added for billing purposes, one customer should be counted for each group of meters added. The average number of customers means the average of twelve figures at the close of each month.
  4. If increases or decreases from previous period (columns (c),(e), and (g)), are not derived from previously reported figures, explain any inconsistencies in a footnote.
  5. Disclose amounts of $250,000 or greater in a footnote for accounts 451, 456, and 457.2.
  6. Commercial and industrial Sales, Account 442, may be classified according to the basis of classification (Small or Commercial, and Large or Industrial) regularly used by the respondent if such basis of classification is not generally greater than 1000 Kw of demand. (See Account 442 of the Uniform System of Accounts. Explain basis of classification in a footnote.)
  7. See page 108, Important Changes During Period, for important new territory added and important rate increase or decreases.
  8. For Lines 2,4,5,and 6, see Page 304 for amounts relating to unbilled revenue by accounts.
  9. Include unmetered sales. Provide details of such Sales in a footnote.
Line No.
Title of Account
(a)
Operating Revenues Year to Date Quarterly/Annual
(b)
Operating Revenues Previous year (no Quarterly)
(c)
MEGAWATT HOURS SOLD Year to Date Quarterly/Annual
(d)
MEGAWATT HOURS SOLD Amount Previous year (no Quarterly)
(e)
AVG.NO. CUSTOMERS PER MONTH Current Year (no Quarterly)
(f)
AVG.NO. CUSTOMERS PER MONTH Previous Year (no Quarterly)
(g)
1
SalesOfElectricityHeadingAbstract
Sales of Electricity
2
ResidentialSalesAbstract
(440) Residential Sales
3
CommercialAndIndustrialSalesAbstract
(442) Commercial and Industrial Sales
4
CommercialSalesAbstract
Small (or Comm.) (See Instr. 4)
5
IndustrialSalesAbstract
Large (or Ind.) (See Instr. 4)
6
PublicStreetAndHighwayLightingAbstract
(444) Public Street and Highway Lighting
7
OtherSalesToPublicAuthoritiesAbstract
(445) Other Sales to Public Authorities
8
SalesToRailroadsAndRailwaysAbstract
(446) Sales to Railroads and Railways
9
InterdepartmentalSalesAbstract
(448) Interdepartmental Sales
10
SalesToUltimateConsumersAbstract
TOTAL Sales to Ultimate Consumers
11
SalesForResaleAbstract
(447) Sales for Resale
12
SalesOfElectricityAbstract
TOTAL Sales of Electricity
13
ProvisionForRateRefundsAbstract
(Less) (449.1) Provision for Rate Refunds
14
RevenuesNetOfProvisionForRefundsAbstract
TOTAL Revenues Before Prov. for Refunds
15
OtherOperatingRevenuesAbstract
Other Operating Revenues
16
ForfeitedDiscounts
(450) Forfeited Discounts
17
MiscellaneousServiceRevenues
(451) Miscellaneous Service Revenues
931,205
18
SalesOfWaterAndWaterPower
(453) Sales of Water and Water Power
19
RentFromElectricProperty
(454) Rent from Electric Property
3,821,311
3,764,401
20
InterdepartmentalRents
(455) Interdepartmental Rents
21
OtherElectricRevenue
(456) Other Electric Revenues
(a)
2,453,801
(c)
1,684,446
22
RevenuesFromTransmissionOfElectricityOfOthers
(456.1) Revenues from Transmission of Electricity of Others
(b)
392,425,545
(d)
337,491,296
23
RegionalTransmissionServiceRevenues
(457.1) Regional Control Service Revenues
24
MiscellaneousRevenue
(457.2) Miscellaneous Revenues
25
OtherMiscellaneousOperatingRevenues
Other Miscellaneous Operating Revenues
26
OtherOperatingRevenues
TOTAL Other Operating Revenues
398,700,657
343,871,348
27
ElectricOperatingRevenues
TOTAL Electric Operating Revenues
398,700,657
343,871,348
Line12, column (b) includes $
of unbilled revenues.
Line12, column (d) includes
MWH relating to unbilled revenues


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
FOOTNOTE DATA

(a) Concept: OtherElectricRevenue
The dollars represent the following:
Transmission Owner Scheduling System Control
and Dispatch Service Credits $2,453,801 
(b) Concept: RevenuesFromTransmissionOfElectricityOfOthers
The Annual Revenue Requirement and Point-to-Point rates are filed in PJM OATT AttH-28. The Annual Revenue Requirement is allocated to a monthly revenue, and this monthly revenue along with Point-to-Point revenues are paid through PJM Interconnection, LLC.


1Q 2023 2Q 2023 3Q 2023 4Q 2023 2023 TOTAL
PJM Revenue $ 89,257,076  $ 73,573,931  $ 97,104,124  $ 85,174,154  $ 99,128,102  $ 104,674,761  $ 390,164,063 
PJM Point-to-Point Rev (320,519) 709,315  974,455  898,231  2,261,482 
Total 456.1 Revenue $ 88,936,557  $ 97,813,439  $ 100,102,557  $ 105,572,992  $ 392,425,545 
(c) Concept: OtherElectricRevenue
The dollars represent the following:
Transmission Owner Scheduling System Control
and Dispatch Service Credits $1,684,446 
(d) Concept: RevenuesFromTransmissionOfElectricityOfOthers
The Annual Revenue Requirement and Point-to-Point rates are filed in PJM OATT AttH-28. The Annual Revenue Requirement is allocated to a monthly revenue, and this monthly revenue along with Point-to-Point revenues are paid through PJM Interconnection, LLC.


1Q 2022 2Q 2022 3Q 2022 4Q 2022 2022 TOTAL
PJM Revenue $ 78,490,065  $ 73,573,931  $ 73,573,931  $ 85,174,154  $ 96,343,683  $ 85,174,154  $ 333,581,833 
PJM Point-to-Point Rev 1,127,615  900,383  915,998  965,467  3,909,463 
Total 456.1 Revenue $ 79,617,680  $ 74,474,314  $ 97,259,681  $ 86,139,621  $ 337,491,296 

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
REGIONAL TRANSMISSION SERVICE REVENUES (Account 457.1)
  1. The respondent shall report below the revenue collected for each service (i.e., control area administration, market administration, etc.) performed pursuant to a Commission approved tariff. All amounts separately billed must be detailed below.
Line No.
Description of Service
(a)
Balance at End of Quarter 1
(b)
Balance at End of Quarter 2
(c)
Balance at End of Quarter 3
(d)
Balance at End of Year
(e)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
SALES OF ELECTRICITY BY RATE SCHEDULES
  1. Report below for each rate schedule in effect during the year the MWH of electricity sold, revenue, average number of customer, average Kwh per customer, and average revenue per Kwh, excluding date for Sales for Resale which is reported on Page 310.
  2. Provide a subheading and total for each prescribed operating revenue account in the sequence followed in "Electric Operating Revenues," Page 300. If the sales under any rate schedule are classified in more than one revenue account, List the rate schedule and sales data under each applicable revenue account subheading.
  3. Where the same customers are served under more than one rate schedule in the same revenue account classification (such as a general residential schedule and an off peak water heating schedule), the entries in column (d) for the special schedule should denote the duplication in number of reported customers.
  4. The average number of customers should be the number of bills rendered during the year divided by the number of billing periods during the year (12 if all billings are made monthly).
  5. For any rate schedule having a fuel adjustment clause state in a footnote the estimated additional revenue billed pursuant thereto.
  6. Report amount of unbilled revenue as of end of year for each applicable revenue account subheading.
Line No.
Number and Title of Rate Schedule
(a)
MWh Sold
(b)
Revenue
(c)
Average Number of Customers
(d)
KWh of Sales Per Customer
(e)
Revenue Per KWh Sold
(f)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41 TOTAL Billed - All Accounts
42 TOTAL Unbilled Rev. (See Instr. 6) - All Accounts
43 TOTAL - All Accounts


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
SALES FOR RESALE (Account 447)
  1. Report all sales for resale (i.e., sales to purchasers other than ultimate consumers) transacted on a settlement basis other than power exchanges during the year. Do not report exchanges of electricity ( i.e., transactions involving a balancing of debits and credits for energy, capacity, etc.) and any settlements for imbalanced exchanges on this schedule. Power exchanges must be reported on the Purchased Power schedule (Page 326).
  2. Enter the name of the purchaser in column (a). Do note abbreviate or truncate the name or use acronyms. Explain in a footnote any ownership interest or affiliation the respondent has with the purchaser.
  3. In column (b), enter a Statistical Classification Code based on the original contractual terms and conditions of the service as follows:

    RQ - for requirements service. Requirements service is service which the supplier plans to provide on an ongoing basis (i.e., the supplier includes projected load for this service in its system resource planning). In addition, the reliability of requirements service must be the same as, or second only to, the supplier's service to its own ultimate consumers.

    LF - for tong-term service. "Long-term" means five years or Longer and "firm" means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions (e.g., the supplier must attempt to buy emergency energy from third parties to maintain deliveries of LF service). This category should not be used for Long-term firm service which meets the definition of RQ service. For all transactions identified as LF, provide in a footnote the termination date of the contract defined as the earliest date that either buyer or setter can unilaterally get out of the contract.

    IF - for intermediate-term firm service. The same as LF service except that "intermediate-term" means longer than one year but Less than five years.

    SF - for short-term firm service. Use this category for all firm services where the duration of each period of commitment for service is one year or less.

    LU - for Long-term service from a designated generating unit. "Long-term" means five years or Longer. The availability and reliability of service, aside from transmission constraints, must match the availability and reliability of designated unit.

    IU - for intermediate-term service from a designated generating unit. The same as LU service except that "intermediate-term" means Longer than one year but Less than five years.

    OS - for other service. use this category only for those services which cannot be placed in the above-defined categories, such as all non-firm service regardless of the Length of the contract and service from designated units of Less than one year. Describe the nature of the service in a footnote.

    AD - for Out-of-period adjustment. Use this code for any accounting adjustments or "true-ups" for service provided in prior reporting years. Provide an explanation in a footnote for each adjustment.

  4. Group requirements RQ sales together and report them starting at line number one. After listing all RQ sales, enter "Subtotal - RQ" in column (a). The remaining sales may then be listed in any order. Enter "Subtotal-Non-RQ" in column (a) after this Listing. Enter "Total'' in column (a) as the Last Line of the schedule. Report subtotals and total for columns (g) through (k).
  5. In Column (c), identify the FERC Rate Schedule or Tariff Number. On separate Lines, List all FERC rate schedules or tariffs under which service, as identified in column (b), is provided.
  6. For requirements RQ sales and any type of-service involving demand charges imposed on a monthly (or Longer) basis, enter the average monthly billing demand in column (d), the average monthly non-coincident peak (NCP) demand in column (e), and the average monthly coincident peak (CP) demand in column (f). For all other types of service, enter NA in columns (d), (e) and (f). Monthly NCP demand is the maximum metered hourly (60-minute integration) demand in a month. Monthly CP demand is the metered demand during the hour (60-minute integration) in which the supplier's system reaches its monthly peak. Demand reported in columns (e) and (f) must be in megawatts. Footnote any demand not stated on a megawatt basis and explain.
  7. Report in column (g) the megawatt hours shown on bills rendered to the purchaser.
  8. Report demand charges in column (h), energy charges in column (i), and the total of any other types of charges, including out-of-period adjustments, in column (j). Explain in a footnote all components of the amount shown in column (j). Report in column (k) the total charge shown on bills rendered to the purchaser.
  9. The data in column (g) through (k) must be subtotaled based on the RQ/Non-RQ grouping (see instruction 4), and then totaled on the Last -line of the schedule. The "Subtotal - RQ" amount in column (g) must be reported as Requirements Sales For Resale on Page 401, line 23. The "Subtotal - Non-RQ" amount in column (g) must be reported as Non-Requirements Sales For Resale on Page 401,line 24.
  10. Footnote entries as required and provide explanations following all required data.
ACTUAL DEMAND (MW) REVENUE
Line No.
Name of Company or Public Authority (Footnote Affiliations)
(a)
Statistical Classification
(b)
FERC Rate Schedule or Tariff Number
(c)
Average Monthly Billing Demand (MW)
(d)
Average Monthly NCP Demand
(e)
Average Monthly CP Demand
(f)
Megawatt Hours Sold
(g)
Demand Charges ($)
(h)
Energy Charges ($)
(i)
Other Charges ($)
(j)
Total ($) (h+i+j)
(k)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Subtotal - RQ
16
Subtotal-Non-RQ
17 Total


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
ELECTRIC OPERATION AND MAINTENANCE EXPENSES

If the amount for previous year is not derived from previously reported figures, explain in footnote.

Line No.
Account
(a)
Amount for Current Year
(b)
Amount for Previous Year (c)
(c)
1
PowerProductionExpensesAbstract
1. POWER PRODUCTION EXPENSES
2
SteamPowerGenerationAbstract
A. Steam Power Generation
3
SteamPowerGenerationOperationAbstract
Operation
4
OperationSupervisionAndEngineeringSteamPowerGeneration
(500) Operation Supervision and Engineering
5
FuelSteamPowerGeneration
(501) Fuel
6
SteamExpensesSteamPowerGeneration
(502) Steam Expenses
7
SteamFromOtherSources
(503) Steam from Other Sources
8
SteamTransferredCredit
(Less) (504) Steam Transferred-Cr.
9
ElectricExpensesSteamPowerGeneration
(505) Electric Expenses
10
MiscellaneousSteamPowerExpenses
(506) Miscellaneous Steam Power Expenses
11
RentsSteamPowerGeneration
(507) Rents
12
Allowances
(509) Allowances
13
SteamPowerGenerationOperationsExpense
TOTAL Operation (Enter Total of Lines 4 thru 12)
14
SteamPowerGenerationMaintenanceAbstract
Maintenance
15
MaintenanceSupervisionAndEngineeringSteamPowerGeneration
(510) Maintenance Supervision and Engineering
16
MaintenanceOfStructuresSteamPowerGeneration
(511) Maintenance of Structures
17
MaintenanceOfBoilerPlantSteamPowerGeneration
(512) Maintenance of Boiler Plant
18
MaintenanceOfElectricPlantSteamPowerGeneration
(513) Maintenance of Electric Plant
19
MaintenanceOfMiscellaneousSteamPlant
(514) Maintenance of Miscellaneous Steam Plant
20
SteamPowerGenerationMaintenanceExpense
TOTAL Maintenance (Enter Total of Lines 15 thru 19)
21
PowerProductionExpensesSteamPower
TOTAL Power Production Expenses-Steam Power (Enter Total of Lines 13 & 20)
22
NuclearPowerGenerationAbstract
B. Nuclear Power Generation
23
NuclearPowerGenerationOperationAbstract
Operation
24
OperationSupervisionAndEngineeringNuclearPowerGeneration
(517) Operation Supervision and Engineering
25
NuclearFuelExpense
(518) Fuel
26
CoolantsAndWater
(519) Coolants and Water
27
SteamExpensesNuclearPowerGeneration
(520) Steam Expenses
28
SteamFromOtherSourcesNuclearPowerGeneration
(521) Steam from Other Sources
29
SteamTransferredCreditNuclearPowerGeneration
(Less) (522) Steam Transferred-Cr.
30
ElectricExpensesNuclearPowerGeneration
(523) Electric Expenses
31
MiscellaneousNuclearPowerExpenses
(524) Miscellaneous Nuclear Power Expenses
32
RentsNuclearPowerGeneration
(525) Rents
33
NuclearPowerGenerationOperationsExpense
TOTAL Operation (Enter Total of lines 24 thru 32)
34
NuclearPowerGenerationMaintenanceAbstract
Maintenance
35
MaintenanceSupervisionAndEngineeringNuclearPowerGeneration
(528) Maintenance Supervision and Engineering
36
MaintenanceOfStructuresNuclearPowerGeneration
(529) Maintenance of Structures
37
MaintenanceOfReactorPlantEquipmentNuclearPowerGeneration
(530) Maintenance of Reactor Plant Equipment
38
MaintenanceOfElectricPlantNuclearPowerGeneration
(531) Maintenance of Electric Plant
39
MaintenanceOfMiscellaneousNuclearPlant
(532) Maintenance of Miscellaneous Nuclear Plant
40
NuclearPowerGenerationMaintenanceExpense
TOTAL Maintenance (Enter Total of lines 35 thru 39)
41
PowerProductionExpensesNuclearPower
TOTAL Power Production Expenses-Nuclear. Power (Enter Total of lines 33 & 40)
42
HydraulicPowerGenerationAbstract
C. Hydraulic Power Generation
43
HydraulicPowerGenerationOperationAbstract
Operation
44
OperationSupervisionAndEngineeringHydraulicPowerGeneration
(535) Operation Supervision and Engineering
45
WaterForPower
(536) Water for Power
46
HydraulicExpenses
(537) Hydraulic Expenses
47
ElectricExpensesHydraulicPowerGeneration
(538) Electric Expenses
48
MiscellaneousHydraulicPowerGenerationExpenses
(539) Miscellaneous Hydraulic Power Generation Expenses
49
RentsHydraulicPowerGeneration
(540) Rents
50
HydraulicPowerGenerationOperationsExpense
TOTAL Operation (Enter Total of Lines 44 thru 49)
51
HydraulicPowerGenerationContinuedAbstract
C. Hydraulic Power Generation (Continued)
52
HydraulicPowerGenerationMaintenanceAbstract
Maintenance
53
MaintenanceSupervisionAndEngineeringHydraulicPowerGeneration
(541) Mainentance Supervision and Engineering
54
MaintenanceOfStructuresHydraulicPowerGeneration
(542) Maintenance of Structures
55
MaintenanceOfReservoirsDamsAndWaterways
(543) Maintenance of Reservoirs, Dams, and Waterways
56
MaintenanceOfElectricPlantHydraulicPowerGeneration
(544) Maintenance of Electric Plant
57
MaintenanceOfMiscellaneousHydraulicPlant
(545) Maintenance of Miscellaneous Hydraulic Plant
58
HydraulicPowerGenerationMaintenanceExpense
TOTAL Maintenance (Enter Total of lines 53 thru 57)
59
PowerProductionExpensesHydraulicPower
TOTAL Power Production Expenses-Hydraulic Power (Total of Lines 50 & 58)
60
OtherPowerGenerationAbstract
D. Other Power Generation
61
OtherPowerGenerationOperationAbstract
Operation
62
OperationSupervisionAndEngineeringOtherPowerGeneration
(546) Operation Supervision and Engineering
63
Fuel
(547) Fuel
64
GenerationExpenses
(548) Generation Expenses
64.1
OperationOfEnergyStorageEquipment
(548.1) Operation of Energy Storage Equipment
65
MiscellaneousOtherPowerGenerationExpenses
(549) Miscellaneous Other Power Generation Expenses
66
RentsOtherPowerGeneration
(550) Rents
67
OtherPowerGenerationOperationsExpense
TOTAL Operation (Enter Total of Lines 62 thru 67)
68
OtherPowerGenerationMaintenanceAbstract
Maintenance
69
MaintenanceSupervisionAndEngineeringOtherPowerGeneration
(551) Maintenance Supervision and Engineering
70
MaintenanceOfStructures
(552) Maintenance of Structures
71
MaintenanceOfGeneratingAndElectricPlant
(553) Maintenance of Generating and Electric Plant
71.1
MaintenanceOfEnergyStorageEquipmentOtherPowerGeneration
(553.1) Maintenance of Energy Storage Equipment
72
MaintenanceOfMiscellaneousOtherPowerGenerationPlant
(554) Maintenance of Miscellaneous Other Power Generation Plant
73
OtherPowerGenerationMaintenanceExpense
TOTAL Maintenance (Enter Total of Lines 69 thru 72)
74
PowerProductionExpensesOtherPower
TOTAL Power Production Expenses-Other Power (Enter Total of Lines 67 & 73)
75
OtherPowerSuplyExpensesAbstract
E. Other Power Supply Expenses
76
PurchasedPower
(555) Purchased Power
76.1
PowerPurchasedForStorageOperations
(555.1) Power Purchased for Storage Operations
77
SystemControlAndLoadDispatchingElectric
(556) System Control and Load Dispatching
78
OtherExpensesOtherPowerSupplyExpenses
(557) Other Expenses
79
OtherPowerSupplyExpense
TOTAL Other Power Supply Exp (Enter Total of Lines 76 thru 78)
80
PowerProductionExpenses
TOTAL Power Production Expenses (Total of Lines 21, 41, 59, 74 & 79)
81
TransmissionExpensesAbstract
2. TRANSMISSION EXPENSES
82
TransmissionExpensesOperationAbstract
Operation
83
OperationSupervisionAndEngineeringElectricTransmissionExpenses
(560) Operation Supervision and Engineering
866,606
703,484
85
LoadDispatchReliability
(561.1) Load Dispatch-Reliability
1,195,865
1,234,958
86
LoadDispatchMonitorAndOperateTransmissionSystem
(561.2) Load Dispatch-Monitor and Operate Transmission System
1,496,038
419,131
87
LoadDispatchTransmissionServiceAndScheduling
(561.3) Load Dispatch-Transmission Service and Scheduling
88
SchedulingSystemControlAndDispatchServices
(561.4) Scheduling, System Control and Dispatch Services
1,339
89
ReliabilityPlanningAndStandardsDevelopment
(561.5) Reliability, Planning and Standards Development
182,149
239,497
90
TransmissionServiceStudies
(561.6) Transmission Service Studies
19,078
14,825
91
GenerationInterconnectionStudies
(561.7) Generation Interconnection Studies
11,352
437,704
92
ReliabilityPlanningAndStandardsDevelopmentServices
(561.8) Reliability, Planning and Standards Development Services
93
StationExpensesTransmissionExpense
(562) Station Expenses
1,902,740
2,574,757
93.1
OperationOfEnergyStorageEquipmentTransmissionExpense
(562.1) Operation of Energy Storage Equipment
94
OverheadLineExpense
(563) Overhead Lines Expenses
2,601,528
1,281,453
95
UndergroundLineExpensesTransmissionExpense
(564) Underground Lines Expenses
96
TransmissionOfElectricityByOthers
(565) Transmission of Electricity by Others
13,236
97
MiscellaneousTransmissionExpenses
(566) Miscellaneous Transmission Expenses
9,118,340
9,011,456
98
RentsTransmissionElectricExpense
(567) Rents
13,932,206
12,861,344
99
TransmissionOperationExpense
TOTAL Operation (Enter Total of Lines 83 thru 98)
31,303,198
27,885,448
100
TransmissionMaintenanceAbstract
Maintenance
101
MaintenanceSupervisionAndEngineeringElectricTransmissionExpenses
(568) Maintenance Supervision and Engineering
4,808,441
5,607,027
102
MaintenanceOfStructuresTransmissionExpense
(569) Maintenance of Structures
103
MaintenanceOfComputerHardwareTransmission
(569.1) Maintenance of Computer Hardware
26,997
15,494
104
MaintenanceOfComputerSoftwareTransmission
(569.2) Maintenance of Computer Software
109,190
62,706
105
MaintenanceOfCommunicationEquipmentElectricTransmission
(569.3) Maintenance of Communication Equipment
17,824
9,296
106
MaintenanceOfMiscellaneousRegionalTransmissionPlant
(569.4) Maintenance of Miscellaneous Regional Transmission Plant
107
MaintenanceOfStationEquipmentTransmission
(570) Maintenance of Station Equipment
7,197,764
7,510,659
107.1
MaintenanceOfEnergyStorageEquipmentTransmission
(570.1) Maintenance of Energy Storage Equipment
108
MaintenanceOfOverheadLinesTransmission
(571) Maintenance of Overhead Lines
33,382,398
33,060,280
109
MaintenanceOfUndergroundLinesTransmission
(572) Maintenance of Underground Lines
110
MaintenanceOfMiscellaneousTransmissionPlant
(573) Maintenance of Miscellaneous Transmission Plant
439,696
214,476
111
TransmissionMaintenanceExpenseElectric
TOTAL Maintenance (Total of Lines 101 thru 110)
45,982,310
46,479,938
112
TransmissionExpenses
TOTAL Transmission Expenses (Total of Lines 99 and 111)
77,285,508
74,365,386
113
RegionalMarketExpensesAbstract
3. REGIONAL MARKET EXPENSES
114
RegionalMarketExpensesOperationAbstract
Operation
115
OperationSupervision
(575.1) Operation Supervision
116
DayAheadAndRealTimeMarketAdministration
(575.2) Day-Ahead and Real-Time Market Facilitation
117
TransmissionRightsMarketAdministration
(575.3) Transmission Rights Market Facilitation
118
CapacityMarketAdministration
(575.4) Capacity Market Facilitation
119
AncillaryServicesMarketAdministration
(575.5) Ancillary Services Market Facilitation
120
MarketMonitoringAndCompliance
(575.6) Market Monitoring and Compliance
121
MarketFacilitationMonitoringAndComplianceServices
(575.7) Market Facilitation, Monitoring and Compliance Services
122
RentsRegionalMarketExpenses
(575.8) Rents
123
RegionalMarketOperationExpense
Total Operation (Lines 115 thru 122)
124
RegionalMarketExpensesMaintenanceAbstract
Maintenance
125
MaintenanceOfStructuresAndImprovementsRegionalMarketExpenses
(576.1) Maintenance of Structures and Improvements
126
MaintenanceOfComputerHardware
(576.2) Maintenance of Computer Hardware
127
MaintenanceOfComputerSoftware
(576.3) Maintenance of Computer Software
128
MaintenanceOfCommunicationEquipmentRegionalMarketExpenses
(576.4) Maintenance of Communication Equipment
129
MaintenanceOfMiscellaneousMarketOperationPlant
(576.5) Maintenance of Miscellaneous Market Operation Plant
130
RegionalMarketMaintenanceExpense
Total Maintenance (Lines 125 thru 129)
131
RegionalMarketExpenses
TOTAL Regional Transmission and Market Operation Expenses (Enter Total of Lines 123 and 130)
132
DistributionExpensesAbstract
4. DISTRIBUTION EXPENSES
133
DistributionExpensesOperationAbstract
Operation
134
OperationSupervisionAndEngineeringDistributionExpense
(580) Operation Supervision and Engineering
135
LoadDispatching
(581) Load Dispatching
136
StationExpensesDistribution
(582) Station Expenses
137
OverheadLineExpenses
(583) Overhead Line Expenses
138
UndergroundLineExpenses
(584) Underground Line Expenses
138.1
OperationOfEnergyStorageEquipmentDistribution
(584.1) Operation of Energy Storage Equipment
139
StreetLightingAndSignalSystemExpenses
(585) Street Lighting and Signal System Expenses
140
MeterExpenses
(586) Meter Expenses
141
CustomerInstallationsExpenses
(587) Customer Installations Expenses
142
MiscellaneousDistributionExpenses
(588) Miscellaneous Expenses
143
RentsDistributionExpense
(589) Rents
144
DistributionOperationExpensesElectric
TOTAL Operation (Enter Total of Lines 134 thru 143)
145
DistributionExpensesMaintenanceAbstract
Maintenance
146
MaintenanceSupervisionAndEngineering
(590) Maintenance Supervision and Engineering
147
MaintenanceOfStructuresDistributionExpense
(591) Maintenance of Structures
148
MaintenanceOfStationEquipment
(592) Maintenance of Station Equipment
148.1
MaintenanceOfEnergyStorageEquipment
(592.2) Maintenance of Energy Storage Equipment
149
MaintenanceOfOverheadLines
(593) Maintenance of Overhead Lines
150
MaintenanceOfUndergroundLines
(594) Maintenance of Underground Lines
151
MaintenanceOfLineTransformers
(595) Maintenance of Line Transformers
152
MaintenanceOfStreetLightingAndSignalSystems
(596) Maintenance of Street Lighting and Signal Systems
153
MaintenanceOfMeters
(597) Maintenance of Meters
154
MaintenanceOfMiscellaneousDistributionPlant
(598) Maintenance of Miscellaneous Distribution Plant
155
DistributionMaintenanceExpenseElectric
TOTAL Maintenance (Total of Lines 146 thru 154)
156
DistributionExpenses
TOTAL Distribution Expenses (Total of Lines 144 and 155)
157
CustomerAccountsExpensesAbstract
5. CUSTOMER ACCOUNTS EXPENSES
158
CustomerAccountsExpensesOperationsAbstract
Operation
159
SupervisionCustomerAccountExpenses
(901) Supervision
160
MeterReadingExpenses
(902) Meter Reading Expenses
161
CustomerRecordsAndCollectionExpenses
(903) Customer Records and Collection Expenses
162
UncollectibleAccounts
(904) Uncollectible Accounts
163
MiscellaneousCustomerAccountsExpenses
(905) Miscellaneous Customer Accounts Expenses
2,816
2,816
164
CustomerAccountExpenses
TOTAL Customer Accounts Expenses (Enter Total of Lines 159 thru 163)
2,816
2,816
165
CustomerServiceAndInformationalExpensesAbstract
6. CUSTOMER SERVICE AND INFORMATIONAL EXPENSES
166
CustomerServiceAndInformationalExpensesOperationAbstract
Operation
167
SupervisionCustomerServiceAndInformationExpenses
(907) Supervision
168
CustomerAssistanceExpenses
(908) Customer Assistance Expenses
169
InformationalAndInstructionalAdvertisingExpenses
(909) Informational and Instructional Expenses
170
MiscellaneousCustomerServiceAndInformationalExpenses
(910) Miscellaneous Customer Service and Informational Expenses
171
CustomerServiceAndInformationExpenses
TOTAL Customer Service and Information Expenses (Total Lines 167 thru 170)
172
SalesExpenseAbstract
7. SALES EXPENSES
173
SalesExpenseOperationAbstract
Operation
174
SupervisionSalesExpense
(911) Supervision
38,877
175
DemonstratingAndSellingExpenses
(912) Demonstrating and Selling Expenses
176
AdvertisingExpenses
(913) Advertising Expenses
177
MiscellaneousSalesExpenses
(916) Miscellaneous Sales Expenses
178
SalesExpenses
TOTAL Sales Expenses (Enter Total of Lines 174 thru 177)
38,877
179
AdministrativeAndGeneralExpensesAbstract
8. ADMINISTRATIVE AND GENERAL EXPENSES
180
AdministrativeAndGeneralExpensesOperationAbstract
Operation
181
AdministrativeAndGeneralSalaries
(920) Administrative and General Salaries
5,979,493
10,692,075
182
OfficeSuppliesAndExpenses
(921) Office Supplies and Expenses
4,989
18,002
183
AdministrativeExpensesTransferredCredit
(Less) (922) Administrative Expenses Transferred-Credit
2,029,135
3,224,002
184
OutsideServicesEmployed
(923) Outside Services Employed
15,476,576
27,139,465
185
PropertyInsurance
(924) Property Insurance
135,070
640,956
186
InjuriesAndDamages
(925) Injuries and Damages
1,342,168
990,371
187
EmployeePensionsAndBenefits
(926) Employee Pensions and Benefits
9,857,494
1,737,696
188
FranchiseRequirements
(927) Franchise Requirements
189
RegulatoryCommissionExpenses
(928) Regulatory Commission Expenses
190
DuplicateChargesCredit
(929) (Less) Duplicate Charges-Cr.
191
GeneralAdvertisingExpenses
(930.1) General Advertising Expenses
20,000
192
MiscellaneousGeneralExpenses
(930.2) Miscellaneous General Expenses
561,845
455,372
193
RentsAdministrativeAndGeneralExpense
(931) Rents
658,824
529,503
194
AdministrativeAndGeneralOperationExpense
TOTAL Operation (Enter Total of Lines 181 thru 193)
31,967,324
35,504,046
195
AdministrativeAndGeneralExpensesMaintenanceAbstract
Maintenance
196
MaintenanceOfGeneralPlant
(935) Maintenance of General Plant
4,729,598
2,753,334
197
AdministrativeAndGeneralExpenses
TOTAL Administrative & General Expenses (Total of Lines 194 and 196)
36,696,922
38,257,380
198
OperationsAndMaintenanceExpensesElectric
TOTAL Electric Operation and Maintenance Expenses (Total of Lines 80, 112, 131, 156, 164, 171, 178, and 197)
114,018,491
112,625,582


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
PURCHASED POWER (Account 555)
  1. Report all power purchases made during the year. Also report exchanges of electricity (i.e., transactions involving a balancing of debits and credits for energy, capacity, etc.) and any settlements for imbalanced exchanges.
  2. Enter the name of the seller or other party in an exchange transaction in column (a). Do not abbreviate or truncate the name or use acronyms. Explain in a footnote any ownership interest or affiliation the respondent has with the seller.
  3. In column (b), enter a Statistical Classification Code based on the original contractual terms and conditions of the service as follows:

    RQ - for requirements service. Requirements service is service which the supplier plans to provide on an ongoing basis (i.e., the supplier includes projects load for this service in its system resource planning). In addition, the reliability of requirement service must be the same as, or second only to, the supplier's service to its own ultimate consumers.

    LF - for long-term firm service. "Long-term" means five years or longer and "firm" means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions (e.g., the supplier must attempt to buy emergency energy from third parties to maintain deliveries of LF service). This category should not be used for long-term firm service firm service which meets the definition of RQ service. For all transaction identified as LF, provide in a footnote the termination date of the contract defined as the earliest date that either buyer or seller can unilaterally get out of the contract.

    IF - for intermediate-term firm service. The same as LF service expect that "intermediate-term" means longer than one year but less than five years.

    SF - for short-term service. Use this category for all firm services, where the duration of each period of commitment for service is one year or less.

    LU - for long-term service from a designated generating unit. "Long-term" means five years or longer. The availability and reliability of service, aside from transmission constraints, must match the availability and reliability of the designated unit.

    IU - for intermediate-term service from a designated generating unit. The same as LU service expect that "intermediate-term" means longer than one year but less than five years.

    EX - For exchanges of electricity. Use this category for transactions involving a balancing of debits and credits for energy, capacity, etc. and any settlements for imbalanced exchanges.

    OS - for other service. Use this category only for those services which cannot be placed in the above-defined categories, such as all non-firm service regardless of the Length of the contract and service from designated units of Less than one year. Describe the nature of the service in a footnote for each adjustment.

    AD - for out-of-period adjustment. Use this code for any accounting adjustments or "true-ups" for service provided in prior reporting years. Provide an explanation in a footnote for each adjustment.

  4. In column (c), identify the FERC Rate Schedule Number or Tariff, or, for non-FERC jurisdictional sellers, include an appropriate designation for the contract. On separate lines, list all FERC rate schedules, tariffs or contract designations under which service, as identified in column (b), is provided.
  5. For requirements RQ purchases and any type of service involving demand charges imposed on a monnthly (or longer) basis, enter the monthly average billing demand in column (d), the average monthly non-coincident peak (NCP) demand in column (e), and the average monthly coincident peak (CP) demand in column (f). For all other types of service, enter NA in columns (d), (e) and (f). Monthly NCP demand is the maximum metered hourly (60-minute integration) demand in a month. Monthly CP demand is the metered demand during the hour (60-minute integration) in which the supplier's system reaches its monthly peak. Demand reported in columns (e) and (f) must be in megawatts. Footnote any demand not stated on a megawatt basis and explain.
  6. Report in column (g) the megawatthours shown on bills rendered to the respondent, excluding purchases for energy storage. Report in column (h) the megawatthours shown on bills rendered to the respondent for energy storage purchases. Report in columns (i) and (j) the megawatthours of power exchanges received and delivered, used as the basis for settlement. Do not report net exchange.
  7. Report demand charges in column (k), energy charges in column (l), and the total of any other types of charges, including out-of-period adjustments, in column (m). Explain in a footnote all components of the amount shown in column (m). Report in column (n) the total charge shown on bills received as settlement by the respondent. For power exchanges, report in column (n) the settlement amount for the net receipt of energy. If more energy was delivered than received, enter a negative amount. If the settlement amount (m) include credits or charges other than incremental generation expenses, or (2) excludes certain credits or charges covered by the agreement, provide an explanatory footnote.
  8. The data in columns (g) through (n) must be totaled on the last line of the schedule. The total amount in columns (g) and (h) must be reported as Purchases on Page 401, line 10. The total amount in column (i) must be reported as Exchange Received on Page 401, line 12. The total amount in column (j) must be reported as Exchange Delivered on Page 401, line 13.
  9. Footnote entries as required and provide explanations following all required data.
Actual Demand (MW) POWER EXCHANGES COST/SETTLEMENT OF POWER
Line No.
NameOfCompanyOrPublicAuthorityProvidingPurchasedPower
Name of Company or Public Authority (Footnote Affiliations)
(a)
StatisticalClassificationCode
Statistical Classification
(b)
RateScheduleTariffNumber
Ferc Rate Schedule or Tariff Number
(c)
AverageMonthlyBillingDemand
Average Monthly Billing Demand (MW)
(d)
AverageMonthlyNonCoincidentPeakDemand
Average Monthly NCP Demand
(e)
AverageMonthlyCoincidentPeakDemand
Average Monthly CP Demand
(f)
MegawattHoursPurchasedOtherThanStorage
MegaWatt Hours Purchased (Excluding for Energy Storage)
(g)
MegawattHoursPurchasedForEnergyStorage
MegaWatt Hours Purchased for Energy Storage
(h)
EnergyReceivedThroughPowerExchanges
MegaWatt Hours Received
(i)
EnergyDeliveredThroughPowerExchanges
MegaWatt Hours Delivered
(j)
DemandChargesOfPurchasedPower
Demand Charges ($)
(k)
EnergyChargesOfPurchasedPower
Energy Charges ($)
(l)
OtherChargesOfPurchasedPower
Other Charges ($)
(m)
SettlementOfPower
Total (k+l+m) of Settlement ($)
(n)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
TRANSMISSION OF ELECTRICITY FOR OTHERS (Account 456.1) (Including transactions referred to as "wheeling")
  1. Report all transmission of electricity, i.e., wheeling, provided for other electric utilities, cooperatives, other public authorities, qualifying facilities, non-traditional utility suppliers and ultimate customers for the quarter.
  2. Use a separate line of data for each distinct type of transmission service involving the entities listed in column (a), (b) and (c).
  3. Report in column (a) the company or public authority that paid for the transmission service. Report in column (b) the company or public authority that the energy was received from and in column (c) the company or public authority that the energy was delivered to. Provide the full name of each company or public authority. Do not abbreviate or truncate name or use acronyms. Explain in a footnote any ownership interest in or affiliation the respondent has with the entities listed in columns (a), (b) or (c).
  4. In column (d) enter a Statistical Classification code based on the original contractual terms and conditions of the service as follows: FNO - Firm Network Service for Others, FNS - Firm Network Transmission Service for Self, LFP - "Long-Term Firm Point to Point Transmission Service, OLF - Other Long-Term Firm Transmission Service, SFP - Short-Term Firm Point to Point Transmission Reservation, NF - non-firm transmission service, OS - Other Transmission Service and AD - Out-of-Period Adjustments. Use this code for any accounting adjustments or "true-ups" for service provided in prior reporting periods. Provide an explanation in a footnote for each adjustment. See General Instruction for definitions of codes.
  5. In column (e), identify the FERC Rate Schedule or Tariff Number, On separate lines, list all FERC rate schedules or contract designations under which service, as identified in column (d), is provided.
  6. Report receipt and delivery locations for all single contract path, "point to point" transmission service. In column (f), report the designation for the substation, or other appropriate identification for where energy was received as specified in the contract. In column (g) report the designation for the substation, or other appropriate identification for where energy was delivered as specified in the contract.
  7. Report in column (h) the number of megawatts of billing demand that is specified in the firm transmission service contract. Demand reported in column (h) must be in megawatts. Footnote any demand not stated on a megawatts basis and explain.
  8. Report in column (i) and (j) the total megawatthours received and delivered.
  9. In column (k) through (n), report the revenue amounts as shown on bills or vouchers. In column (k), provide revenues from demand charges related to the billing demand reported in column (h). In column (I), provide revenues from energy charges related to the amount of energy transferred. In column (m), provide the total revenues from all other charges on bills or vouchers rendered, including out of period adjustments. Explain in a footnote all components of the amount shown in column (m). Report in column (n) the total charge shown on bills rendered to the entity Listed in column (a). If no monetary settlement was made, enter zero (0) in column (n). Provide a footnote explaining the nature of the non-monetary settlement, including the amount and type of energy or service rendered.
  10. The total amounts in columns (i) and (j) must be reported as Transmission Received and Transmission Delivered for annual report purposes only on Page 401, Lines 16 and 17, respectively.
  11. Footnote entries and provide explanations following all required data.
TRANSFER OF ENERGY REVENUE FROM TRANSMISSION OF ELECTRICITY FOR OTHERS
Line No.
PaymentByCompanyOrPublicAuthority
Payment By (Company of Public Authority) (Footnote Affiliation)
(a)
TransmissionEnergyReceivedFromCompanyOrPublicAuthorityName
Energy Received From (Company of Public Authority) (Footnote Affiliation)
(b)
TransmissionEnergyDeliveredToCompanyOrPublicAuthorityName
Energy Delivered To (Company of Public Authority) (Footnote Affiliation)
(c)
StatisticalClassificationCode
Statistical Classification
(d)
RateScheduleTariffNumber
Ferc Rate Schedule of Tariff Number
(e)
TransmissionPointOfReceipt
Point of Receipt (Substation or Other Designation)
(f)
TransmissionPointOfDelivery
Point of Delivery (Substation or Other Designation)
(g)
BillingDemand
Billing Demand (MW)
(h)
TransmissionOfElectricityForOthersEnergyReceived
Megawatt Hours Received
(i)
TransmissionOfElectricityForOthersEnergyDelivered
Megawatt Hours Delivered
(j)
Demand Charges ($)
(k)
Energy Charges ($)
(l)
Other Charges ($)
(m)
RevenuesFromTransmissionOfElectricityForOthers
Total Revenues ($) (k+l+m)
(n)
1
PJM Formula Rate Calc Rev
PJM Network
PJM Network
(a)
390,164,063
390,164,063
2
PJM Point to Point Transmission
Various
Various
2,261,482
2,261,482
35 TOTAL
0
0
0
392,425,545
392,425,545


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
FOOTNOTE DATA

(a) Concept: OtherChargesRevenueTransmissionOfElectricityForOthers
The Annual Revenue Requirement and Point-to-Point rates are filed in PJM OATT AttH-28. The Annual Revenue Requirement is allocated to a monthly revenue, and this monthly revenue along with Point-to-Point revenues are paid through PJM Interconnection, LLC.

1Q 2023 2Q 2023 3Q 2023 4Q 2023 2023 TOTAL
PJM Revenue $ 89,257,076  $ 73,573,931  $ 97,104,124  $ 85,174,154  $ 99,128,102  $ 104,674,761  $ 390,164,063 
PJM Point-to-Point Rev (320,519) 709,315  974,455  898,231  2,261,482 
Total 456.1 Revenue $ 88,936,557  $ 97,813,439  $ 100,102,557  $ 105,572,992  $ 392,425,545 

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
TRANSMISSION OF ELECTRICITY BY ISO/RTOs
  1. Report in Column (a) the Transmission Owner receiving revenue for the transmission of electricity by the ISO/RTO.
  2. Use a separate line of data for each distinct type of transmission service involving the entities listed in Column (a).
  3. In Column (b) enter a Statistical Classification code based on the original contractual terms and conditions of the service as follows: FNO – Firm Network Service for Others, FNS – Firm Network Transmission Service for Self, LFP – Long-Term Firm Point-to-Point Transmission Service, OLF – Other Long-Term Firm Transmission Service, SFP – Short-Term Firm Point-to-Point Transmission Reservation, NF – Non-Firm Transmission Service, OS – Other Transmission Service and AD- Out-of-Period Adjustments. Use this code for any accounting adjustments or “true-ups” for service provided in prior reporting periods. Provide an explanation in a footnote for each adjustment. See General Instruction for definitions of codes.
  4. In column (c) identify the FERC Rate Schedule or tariff Number, on separate lines, list all FERC rate schedules or contract designations under which service, as identified in column (b) was provided.
  5. In column (d) report the revenue amounts as shown on bills or vouchers.
  6. Report in column (e) the total revenues distributed to the entity listed in column (a).
Line No.
Payment Received by (Transmission Owner Name)
(a)
Statistical Classification
(b)
FERC Rate Schedule or Tariff Number
(c)
Total Revenue by Rate Schedule or Tariff
(d)
Total Revenue
(e)
1
PJM Revenue Requirement
28
(a)
390,164,063
2
PJM Point to Point
28
2,261,482
40
TOTAL
392,425,545


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
FOOTNOTE DATA

(a) Concept: RevenuesByRateOrTariff
The Annual Revenue Requirement and Point-to-Point rates are filed in PJM OATT AttH-28. The Annual Revenue Requirement is allocated to a monthly revenue, and this monthly revenue along with Point-to-Point revenues are paid through PJM Interconnection, LLC.


1Q 2023 2Q 2023 3Q 2023 4Q 2023 2023 TOTAL
PJM Revenue $ 89,257,076  $ 73,573,931  $ 97,104,124  $ 85,174,154  $ 99,128,102  $ 104,674,761  $ 390,164,063 
PJM Point-to-Point Rev (320,519) 709,315  974,455  898,231  2,261,482 
Total 456.1 Revenue $ 88,936,557  $ 97,813,439  $ 100,102,557  $ 105,572,992  $ 392,425,545 

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
TRANSMISSION OF ELECTRICITY BY OTHERS (Account 565)
  1. Report all transmission, i.e. wheeling or electricity provided by other electric utilities, cooperatives, municipalities, other public authorities, qualifying facilities, and others for the quarter.
  2. In column (a) report each company or public authority that provided transmission service. Provide the full name of the company, abbreviate if necessary, but do not truncate name or use acronyms. Explain in a footnote any ownership interest in or affiliation with the transmission service provider. Use additional columns as necessary to report all companies or public authorities that provided transmission service for the quarter reported.
  3. In column (b) enter a Statistical Classification code based on the original contractual terms and conditions of the service as follows:
    FNS - Firm Network Transmission Service for Self, LFP - Long-Term Firm Point-to-Point Transmission Reservations. OLF - Other Long-Term Firm Transmission Service, SFP - Short-Term Firm Point-to- Point Transmission Reservations, NF - Non-Firm Transmission Service, and OS - Other Transmission Service. See General Instructions for definitions of statistical classifications.
  4. Report in column (c) and (d) the total megawatt hours received and delivered by the provider of the transmission service.
  5. Report in column (e), (f) and (g) expenses as shown on bills or vouchers rendered to the respondent. In column (e) report the demand charges and in column (f) energy charges related to the amount of energy transferred. On column (g) report the total of all other charges on bills or vouchers rendered to the respondent, including any out of period adjustments. Explain in a footnote all components of the amount shown in column (g). Report in column (h) the total charge shown on bills rendered to the respondent. If no monetary settlement was made, enter zero in column (h). Provide a footnote explaining the nature of the non-monetary settlement, including the amount and type of energy or service rendered.
  6. Enter ""TOTAL"" in column (a) as the last line.
  7. Footnote entries and provide explanations following all required data.
TRANSFER OF ENERGY EXPENSES FOR TRANSMISSION OF ELECTRICITY BY OTHERS
Line No.
NameOfCompanyOrPublicAuthorityTransmissionOfElectricityByOthers
Name of Company or Public Authority (Footnote Affiliations)
(a)
StatisticalClassificationCode
Statistical Classification
(b)
TransmissionOfElectricityByOthersEnergyReceived
MegaWatt Hours Received
(c)
TransmissionOfElectricityByOthersEnergyDelivered
MegaWatt Hours Delivered
(d)
DemandChargesTransmissionOfElectricityByOthers
Demand Charges ($)
(e)
EnergyChargesTransmissionOfElectricityByOthers
Energy Charges ($)
(f)
OtherChargesTransmissionOfElectricityByOthers
Other Charges ($)
(g)
ChargesForTransmissionOfElectricityByOthers
Total Cost of Transmission ($)
(h)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
MISCELLANEOUS GENERAL EXPENSES (Account 930.2) (ELECTRIC)
Line No.
Description
(a)
Amount
(b)
1
IndustryAssociationDues
Industry Association Dues
2
NuclearPowerResearchExpenses
Nuclear Power Research Expenses
3
OtherExperimentalAndGeneralResearchExpenses
Other Experimental and General Research Expenses
4
PublicationAndDistributionExpensesForSecuritiesToStockholders
Pub and Dist Info to Stkhldrs...expn servicing outstanding Securities
5
OtherMiscellaneousGeneralExpenses
Oth Expn greater than or equal to 5,000 show purpose, recipient, amount. Group if less than $5,000
6
Licenses, permits and regulations
346,197
7
Financing Administration Fees
72,038
8
Miscellaneous Regulatory Expense
15,625
9
Association Fees & Dues - Corporate
127,985
46
MiscellaneousGeneralExpenses
TOTAL
561,845


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
Depreciation and Amortization of Electric Plant (Account 403, 404, 405)
  1. Report in section A for the year the amounts for: (b) Depreciation Expense (Account 403); (c) Depreciation Expense for Asset Retirement Costs (Account 403.1); (d) Amortization of Limited-Term Electric Plant (Account 404); and (e) Amortization of Other Electric Plant (Account 405).
  2. Report in Section B the rates used to compute amortization charges for electric plant (Accounts 404 and 405). State the basis used to compute charges and whether any changes have been made in the basis or rates used from the preceding report year.
  3. Report all available information called for in Section C every fifth year beginning with report year 1971, reporting annually only changes to columns (c) through (g) from the complete report of the preceding year.
    Unless composite depreciation accounting for total depreciable plant is followed, list numerically in column (a) each plant subaccount, account or functional classification, as appropriate, to which a rate is applied. Identify at the bottom of Section C the type of plant included in any sub-account used.
    In column (b) report all depreciable plant balances to which rates are applied showing subtotals by functional Classifications and showing composite total. Indicate at the bottom of section C the manner in which column balances are obtained. If average balances, state the method of averaging used.
    For columns (c), (d), and (e) report available information for each plant subaccount, account or functional classification listed in column (a). If plant mortality studies are prepared to assist in estimating average service Lives, show in column (f) the type of mortality curve selected as most appropriate for the account and in column (g), if available, the weighted average remaining life of surviving plant. If composite depreciation accounting is used, report available information called for in columns (b) through (g) on this basis.
  4. If provisions for depreciation were made during the year in addition to depreciation provided by application of reported rates, state at the bottom of section C the amounts and nature of the provisions and the plant items to which related.
A. Summary of Depreciation and Amortization Charges
Line No.
FunctionalClassificationAxis
Functional Classification
(a)
DepreciationExpenseExcludingAmortizationOfAcquisitionAdjustments
Depreciation Expense (Account 403)
(b)
DepreciationExpenseForAssetRetirementCostsExcludingAmortizationgOfAcquisitionAdjustments
Depreciation Expense for Asset Retirement Costs (Account 403.1)
(c)
AmortizationOfLimitedTermPlantOrProperty
Amortization of Limited Term Electric Plant (Account 404)
(d)
AmortizationOfOtherElectricPlant
Amortization of Other Electric Plant (Acc 405)
(e)
DepreciationAndAmortization
Total
(f)
1
Intangible Plant
5,782,015
5,782,015
2
Steam Production Plant
3
Nuclear Production Plant
4
Hydraulic Production Plant-Conventional
5
Hydraulic Production Plant-Pumped Storage
6
Other Production Plant
7
Transmission Plant
58,494,307
228
58,494,535
8
Distribution Plant
9
Regional Transmission and Market Operation
10
General Plant
4,553,693
4,553,693
11
Common Plant-Electric
12
TOTAL
63,048,000
228
5,782,015
68,830,243
B. Basis for Amortization Charges
Software is amortized over 7 years.
C. Factors Used in Estimating Depreciation Charges
Line No.
AccountNumberFactorsUsedInEstimatingDepreciationCharges
Account No.
(a)
DepreciablePlantBase
Depreciable Plant Base (in Thousands)
(b)
UtilityPlantEstimatedAverageServiceLife
Estimated Avg. Service Life
(c)
UtilityPlantNetSalvageValuePercentage
Net Salvage (Percent)
(d)
UtilityPlantAppliedDepreciationRate
Applied Depr. Rates (Percent)
(e)
MortalityCurveType
Mortality Curve Type
(f)
UtilityPlantWeightedAverageRemainingLife
Average Remaining Life
(g)
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
REGULATORY COMMISSION EXPENSES
  1. Report particulars (details) of regulatory commission expenses incurred during the current year (or incurred in previous years, if being amortized) relating to format cases before a regulatory body, or cases in which such a body was a party.
  2. Report in columns (b) and (c), only the current year's expenses that are not deferred and the current year's amortization of amounts deferred in previous years.
  3. Show in column (k) any expenses incurred in prior years which are being amortized. List in column (a) the period of amortization.
  4. List in columns (f), (g), and (h), expenses incurred during the year which were charged currently to income, plant, or other accounts.
  5. Minor items (less than $25,000) may be grouped.
EXPENSES INCURRED DURING YEAR AMORTIZED DURING YEAR
CURRENTLY CHARGED TO
Line No.
RegulatoryCommissionDescription
Description (Furnish name of regulatory commission or body the docket or case number and a description of the case)
(a)
RegulatoryExpensesAssessedByRegulatoryCommission
Assessed by Regulatory Commission
(b)
RegulatoryExpensesOfUtility
Expenses of Utility
(c)
RegulatoryCommissionExpensesAmount
Total Expenses for Current Year (b) + (c)
(d)
OtherRegulatoryAssetsRegulatoryCommissionExpenses
Deferred in Account 182.3 at Beginning of Year
(e)
NameOfDepartmentRegulatoryCommissionExpensesCharged
Department
(f)
AccountNumberRegulatoryCommissionExpensesCharged
Account No.
(g)
RegulatoryComissionExpensesIncurredAndCharged
Amount
(h)
RegulatoryCommissionExpensesDeferredToOtherRegulatoryAssets
Deferred to Account 182.3
(i)
DeferredRegulatoryCommissionExpensesAmortizedInContraAccount
Contra Account
(j)
DeferredRegulatoryCommissionExpensesAmortized
Amount
(k)
OtherRegulatoryAssetsRegulatoryCommissionExpenses
Deferred in Account 182.3 End of Year
(l)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
RESEARCH, DEVELOPMENT, AND DEMONSTRATION ACTIVITIES
  1. Describe and show below costs incurred and accounts charged during the year for technological research, development, and demonstration (R, D and D) project initiated, continued or concluded during the year. Report also support given to others during the year for jointly-sponsored projects.(Identify recipient regardless of affiliation.) For any R, D and D work carried with others, show separately the respondent's cost for the year and cost chargeable to others (See definition of research, development, and demonstration in Uniform System of Accounts).
  2. Indicate in column (a) the applicable classification, as shown below:
    Classifications:
    1. Electric R, D and D Performed Internally:
      1. Generation
        1. hydroelectric
          1. Recreation fish and wildlife
          2. Other hydroelectric
        2. Fossil-fuel steam
        3. Internal combustion or gas turbine
        4. Nuclear
        5. Unconventional generation
        6. Siting and heat rejection
      2. Transmission
        1. Overhead
        2. Underground
      3. Distribution
      4. Regional Transmission and Market Operation
      5. Environment (other than equipment)
      6. Other (Classify and include items in excess of $50,000.)
      7. Total Cost Incurred
    2. Electric, R, D and D Performed Externally:
      1. Research Support to the electrical Research Council or the Electric Power Research Institute
      2. Research Support to Edison Electric Institute
      3. Research Support to Nuclear Power Groups
      4. Research Support to Others (Classify)
      5. Total Cost Incurred
  3. Include in column (c) all R, D and D items performed internally and in column (d) those items performed outside the company costing $50,000 or more, briefly describing the specific area of R, D and D (such as safety, corrosion control, pollution, automation, measurement, insulation, type of appliance, etc.). Group items under $50,000 by classifications and indicate the number of items grouped. Under Other, (A (6) and B (4)) classify items by type of R, D and D activity.
  4. Show in column (e) the account number charged with expenses during the year or the account to which amounts were capitalized during the year, listing Account 107, Construction Work in Progress, first. Show in column (f) the amounts related to the account charged in column (e).
  5. Show in column (g) the total unamortized accumulating of costs of projects. This total must equal the balance in Account 188, Research, Development, and Demonstration Expenditures, Outstanding at the end of the year.
  6. If costs have not been segregated for R, D and D activities or projects, submit estimates for columns (c), (d), and (f) with such amounts identified by ""Est.""
  7. Report separately research and related testing facilities operated by the respondent.
AMOUNTS CHARGED IN CURRENT YEAR
Line No.
ResearchDevelopmentAndDemonstrationClassification
Classification
(a)
ResearchDevelopmentAndDemonstrationDescription
Description
(b)
ResearchDevelopmentAndDemonstrationCostsIncurredInternally
Costs Incurred Internally Current Year
(c)
ResearchDevelopmentAndDemonstrationCostsIncurredExternally
Costs Incurred Externally Current Year
(d)
AccountNumberForResearchDevelopmentAndDemonstrationCosts
Amounts Charged In Current Year: Account
(e)
ResearchDevelopmentAndDemonstrationCosts
Amounts Charged In Current Year: Amount
(f)
ResearchDevelopmentAndDemonstrationExpenditures
Unamortized Accumulation
(g)
1
A(3)
CEATI Transmission Line Research  (INT)
1,793
3,350
2
B(3)
ED Transmission Line Research (external)  -EPRI
3,171
3,171
3
B(3)
ED Transmission Line Research (external)  -EPRI
651,570
651,570
4
B(3)
ED Transmission Line Research (external)  -EPRI
1,252
1,252
5
Total
655,993
655,993
3,350


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
DISTRIBUTION OF SALARIES AND WAGES

Report below the distribution of total salaries and wages for the year. Segregate amounts originally charged to clearing accounts to Utility Departments, Construction, Plant Removals, and Other Accounts, and enter such amounts in the appropriate lines and columns provided. In determining this segregation of salaries and wages originally charged to clearing accounts, a method of approximation giving substantially correct results may be used.

Line No.
Classification
(a)
Direct Payroll Distribution
(b)
Allocation of Payroll Charged for Clearing Accounts
(c)
Total
(d)
1
SalariesAndWagesElectricAbstract
Electric
2
SalariesAndWagesElectricOperationAbstract
Operation
3
SalariesAndWagesElectricOperationProduction
Production
4
SalariesAndWagesElectricOperationTransmission
Transmission
5
SalariesAndWagesElectricOperationRegionalMarket
Regional Market
6
SalariesAndWagesElectricOperationDistribution
Distribution
7
SalariesAndWagesElectricOperationCustomerAccounts
Customer Accounts
8
SalariesAndWagesElectricOperationCustomerServiceAndInformational
Customer Service and Informational
9
SalariesAndWagesElectricOperationSales
Sales
10
SalariesAndWagesElectricOperationAdministrativeAndGeneral
Administrative and General
11
SalariesAndWagesElectricOperation
TOTAL Operation (Enter Total of lines 3 thru 10)
12
SalariesAndWagesElectricMaintenanceAbstract
Maintenance
13
SalariesAndWagesElectricMaintenanceProduction
Production
14
SalariesAndWagesElectricMaintenanceTransmission
Transmission
15
SalariesAndWagesElectricMaintenanceRegionalMarket
Regional Market
16
SalariesAndWagesElectricMaintenanceDistribution
Distribution
17
SalariesAndWagesElectricMaintenanceAdministrativeAndGeneral
Administrative and General
18
SalariesAndWagesElectricMaintenance
TOTAL Maintenance (Total of lines 13 thru 17)
19
SalariesAndWagesElectricOperationAndMaintenanceAbstract
Total Operation and Maintenance
20
SalariesAndWagesElectricProduction
Production (Enter Total of lines 3 and 13)
21
SalariesAndWagesElectricTransmission
Transmission (Enter Total of lines 4 and 14)
22
SalariesAndWagesElectricRegionalMarket
Regional Market (Enter Total of Lines 5 and 15)
23
SalariesAndWagesElectricDistribution
Distribution (Enter Total of lines 6 and 16)
24
SalariesAndWagesElectricCustomerAccounts
Customer Accounts (Transcribe from line 7)
25
SalariesAndWagesElectricCustomerServiceAndInformational
Customer Service and Informational (Transcribe from line 8)
26
SalariesAndWagesElectricSales
Sales (Transcribe from line 9)
27
SalariesAndWagesElectricAdministrativeAndGeneral
Administrative and General (Enter Total of lines 10 and 17)
28
SalariesAndWagesElectricOperationAndMaintenance
TOTAL Oper. and Maint. (Total of lines 20 thru 27)
29
SalariesAndWagesGasAbstract
Gas
30
SalariesAndWagesGasOperationAbstract
Operation
31
SalariesAndWagesGasOperationProductionManufacturedGas
Production - Manufactured Gas
32
SalariesAndWagesGasOperationProductionNaturalGas
Production-Nat. Gas (Including Expl. And Dev.)
33
SalariesAndWagesGasOperationOtherGasSupply
Other Gas Supply
34
SalariesAndWagesGasOperationStorageLiquifiedNaturalGasTerminalingAndProcessing
Storage, LNG Terminaling and Processing
35
SalariesAndWagesGasOperationTransmission
Transmission
36
SalariesAndWagesGasOperationDistribution
Distribution
37
SalariesAndWagesGasCustomerAccounts
Customer Accounts
38
SalariesAndWagesGasCustomerServiceAndInformational
Customer Service and Informational
39
SalariesAndWagesGasSales
Sales
40
SalariesAndWagesGasOperationAdministrativeAndGeneral
Administrative and General
41
SalariesAndWagesGasOperation
TOTAL Operation (Enter Total of lines 31 thru 40)
42
SalariesAndWagesGasMaintenanceAbstract
Maintenance
43
SalariesAndWagesGasMaintenanceProductionManufacturedGas
Production - Manufactured Gas
44
SalariesAndWagesGasMaintenanceProductionNaturalGas
Production-Natural Gas (Including Exploration and Development)
45
SalariesAndWagesGasMaintenanceOtherGasSupply
Other Gas Supply
46
SalariesAndWagesGasMaintenanceStorageLngTerminalingAndProcessing
Storage, LNG Terminaling and Processing
47
SalariesAndWagesGasMaintenanceTransmission
Transmission
48
SalariesAndWagesGasMaintenanceDistribution
Distribution
49
SalariesAndWagesGasMaintenanceAdministrativeAndGeneral
Administrative and General
50
SalariesAndWagesGasMaintenance
TOTAL Maint. (Enter Total of lines 43 thru 49)
51
SalariesAndWagesGasOperationAndMaintenanceAbstract
Total Operation and Maintenance
52
SalariesAndWagesGasProductionManufacturedGas
Production-Manufactured Gas (Enter Total of lines 31 and 43)
53
SalariesAndWagesGasProductionNaturalGas
Production-Natural Gas (Including Expl. and Dev.) (Total lines 32,
54
SalariesAndWagesGasOtherGasSupply
Other Gas Supply (Enter Total of lines 33 and 45)
55
SalariesAndWagesGasStorageLngTerminalingAndProcessing
Storage, LNG Terminaling and Processing (Total of lines 31 thru
56
SalariesAndWagesGasTransmission
Transmission (Lines 35 and 47)
57
SalariesAndWagesGasDistribution
Distribution (Lines 36 and 48)
58
SalariesAndWagesGasCustomerAccounts
Customer Accounts (Line 37)
59
SalariesAndWagesGasCustomerServiceAndInformational
Customer Service and Informational (Line 38)
60
SalariesAndWagesGasSales
Sales (Line 39)
61
SalariesAndWagesGasAdministrativeAndGeneral
Administrative and General (Lines 40 and 49)
62
SalariesAndWagesGasOperationAndMaintenance
TOTAL Operation and Maint. (Total of lines 52 thru 61)
63
SalariesAndWagesOtherUtilityDepartmentsAbstract
Other Utility Departments
64
SalariesAndWagesOtherUtilityDepartmentsOperationAndMaintenance
Operation and Maintenance
65
SalariesAndWagesOperationsAndMaintenance
TOTAL All Utility Dept. (Total of lines 28, 62, and 64)
66
SalariesAndWagesUtilityPlantAbstract
Utility Plant
67
SalariesAndWagesUtilityPlantConstructionAbstract
Construction (By Utility Departments)
68
SalariesAndWagesUtilityPlantConstructionElectricPlant
Electric Plant
69
SalariesAndWagesUtilityPlantConstructionGasPlant
Gas Plant
70
SalariesAndWagesUtilityPlantConstructionOther
Other (provide details in footnote):
71
SalariesAndWagesUtilityPlantConstruction
TOTAL Construction (Total of lines 68 thru 70)
72
SalariesAndWagesPlantRemovalAbstract
Plant Removal (By Utility Departments)
73
SalariesAndWagesPlantRemovalElectricPlant
Electric Plant
74
SalariesAndWagesPlantRemovalGasPlant
Gas Plant
75
SalariesAndWagesPlantRemovalOther
Other (provide details in footnote):
76
SalariesAndWagesPlantRemoval
TOTAL Plant Removal (Total of lines 73 thru 75)
77
SalariesAndWagesOtherAccountsAbstract
Other Accounts (Specify, provide details in footnote):
78
SalariesAndWagesOtherAccountsDescription
79
SalariesAndWagesOtherAccountsDescription
80
SalariesAndWagesOtherAccountsDescription
81
SalariesAndWagesOtherAccountsDescription
82
SalariesAndWagesOtherAccountsDescription
83
SalariesAndWagesOtherAccountsDescription
84
SalariesAndWagesOtherAccountsDescription
85
SalariesAndWagesOtherAccountsDescription
86
SalariesAndWagesOtherAccountsDescription
87
SalariesAndWagesOtherAccountsDescription
88
SalariesAndWagesOtherAccountsDescription
89
SalariesAndWagesOtherAccountsDescription
90
SalariesAndWagesOtherAccountsDescription
91
SalariesAndWagesOtherAccountsDescription
92
SalariesAndWagesOtherAccountsDescription
93
SalariesAndWagesOtherAccountsDescription
94
SalariesAndWagesOtherAccountsDescription
95
SalariesAndWagesOtherAccounts
TOTAL Other Accounts
96
SalariesAndWagesGeneralExpense
TOTAL SALARIES AND WAGES


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
COMMON UTILITY PLANT AND EXPENSES
  1. Describe the property carried in the utility's accounts as common utility plant and show the book cost of such plant at end of year classified by accounts as provided by Electric Plant Instruction 13, Common Utility Plant, of the Uniform System of Accounts. Also show the allocation of such plant costs to the respective departments using the common utility plant and explain the basis of allocation used, giving the allocation factors.
  2. Furnish the accumulated provisions for depreciation and amortization at end of year, showing the amounts and classifications of such accumulated provisions, and amounts allocated to utility departments using the common utility plant to which such accumulated provisions relate, including explanation of basis of allocation and factors used.
  3. Give for the year the expenses of operation, maintenance, rents, depreciation, and amortization for common utility plant classified by accounts as provided by the Uniform System of Accounts. Show the allocation of such expenses to the departments using the common utility plant to which such expenses are related. Explain the basis of allocation used and give the factors of allocation.
  4. Give date of approval by the Commission for use of the common utility plant classification and reference to the order of the Commission or other authorization.


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
AMOUNTS INCLUDED IN ISO/RTO SETTLEMENT STATEMENTS
  1. The respondent shall report below the details called for concerning amounts it recorded in Account 555, Purchase Power, and Account 447, Sales for Resale, for items shown on ISO/RTO Settlement Statements. Transactions should be separately netted for each ISO/RTO administered energy market for purposes of determining whether an entity is a net seller or purchaser in a given hour. Net megawatt hours are to be used as the basis for determining whether a net purchase or sale has occurred. In each monthly reporting period, the hourly sale and purchase net amounts are to be aggregated and separately reported in Account 447, Sales for Resale, or Account 555, Purchased Power, respectively.
Line No.
Description of Item(s)
(a)
Balance at End of Quarter 1
(b)
Balance at End of Quarter 2
(c)
Balance at End of Quarter 3
(d)
Balance at End of Year
(e)
1 Energy
2 Net Purchases (Account 555)
2.1 Net Purchases (Account 555.1)
3 Net Sales (Account 447)
4 Transmission Rights
5 Ancillary Services
6 Other Items (list separately)
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46 TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
PURCHASES AND SALES OF ANCILLARY SERVICES
Report the amounts for each type of ancillary service shown in column (a) for the year as specified in Order No. 888 and defined in the respondents Open Access Transmission Tariff.
In columns for usage, report usage-related billing determinant and the unit of measure.
  1. On Line 1 columns (b), (c), (d), and (e) report the amount of ancillary services purchased and sold during the year.
  2. On Line 2 columns (b), (c), (d), and (e) report the amount of reactive supply and voltage control services purchased and sold during the year.
  3. On Line 3 columns (b), (c), (d), and (e) report the amount of regulation and frequency response services purchased and sold during the year.
  4. On Line 4 columns (b), (c), (d), and (e) report the amount of energy imbalance services purchased and sold during the year.
  5. On Lines 5 and 6, columns (b), (c), (d), and (e) report the amount of operating reserve spinning and supplement services purchased and sold during the period.
  6. On Line 7 columns (b), (c), (d), and (e) report the total amount of all other types ancillary services purchased or sold during the year. Include in a footnote and specify the amount for each type of other ancillary service provided.
Amount Purchased for the Year Amount Sold for the Year
Usage - Related Billing Determinant Usage - Related Billing Determinant
Line No.
Type of Ancillary Service
(a)
Number of Units
(b)
Unit of Measure
(c)
Dollar
(d)
Number of Units
(e)
Unit of Measure
(f)
Dollars
(g)
1
Scheduling, System Control and Dispatch
30,744,979
1,866,008
2
Reactive Supply and Voltage
3
Regulation and Frequency Response
4
Energy Imbalance
5
Operating Reserve - Spinning
6
Operating Reserve - Supplement
7
Other
8
Total (Lines 1 thru 7)
30,744,979
1,866,008


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
MONTHLY TRANSMISSION SYSTEM PEAK LOAD
  1. Report the monthly peak load on the respondent's transmission system. If the respondent has two or more power systems which are not physically integrated, furnish the required information for each non-integrated system.
  2. Report on Column (b) by month the transmission system's peak load.
  3. Report on Columns (c ) and (d) the specified information for each monthly transmission - system peak load reported on Column (b).
  4. Report on Columns (e) through (j) by month the system' monthly maximum megawatt load by statistical classifications. See General Instruction for the definition of each statistical classification.
Line No.
Month
(a)
Monthly Peak MW - Total
(b)
Day of Monthly Peak
(c)
Hour of Monthly Peak
(d)
Firm Network Service for Self
(e)
Firm Network Service for Others
(f)
Long-Term Firm Point-to-point Reservations
(g)
Other Long-Term Firm Service
(h)
Short-Term Firm Point-to-point Reservation
(i)
Other Service
(j)
NAME OF SYSTEM: Enter System
1
January
2
February
3
March
4
Total for Quarter 1
5
April
6
May
7
June
8
Total for Quarter 2
9
July
10
August
11
September
12
Total for Quarter 3
13
October
14
November
15
December
16
Total for Quarter 4
17
Total


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
Monthly ISO/RTO Transmission System Peak Load
  1. Report the monthly peak load on the respondent's transmission system. If the Respondent has two or more power systems which are not physically integrated, furnish the required information for each non-integrated system.
  2. Report on Column (b) by month the transmission system's peak load.
  3. Report on Column (c) and (d) the specified information for each monthly transmission - system peak load reported on Column (b).
  4. Report on Columns (e) through (i) by month the system’s transmission usage by classification. Amounts reported as Through and Out Service in Column (g) are to be excluded from those amounts reported in Columns (e) and (f).
  5. Amounts reported in Column (j) for Total Usage is the sum of Columns (h) and (i).
Line No.
Month
(a)
Monthly Peak MW - Total
(b)
Day of Monthly Peak
(c)
Hour of Monthly Peak
(d)
Import into ISO/RTO
(e)
Exports from ISO/RTO
(f)
Through and Out Service
(g)
Network Service Usage
(h)
Point-to-Point Service Usage
(i)
Total Usage
(j)
NAME OF SYSTEM: Enter System
1
January
2
February
3
March
4
Total for Quarter 1
5
April
6
May
7
June
8
Total for Quarter 2
9
July
10
August
11
September
12
Total for Quarter 3
13
October
14
November
15
December
16
Total for Quarter 4
17
Total Year to Date/Year


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

2024-03-26
Year/Period of Report

End of:
2023
/
Q4
ELECTRIC ENERGY ACCOUNT

Report below the information called for concerning the disposition of electric energy generated, purchased, exchanged and wheeled during the year.

Line No. Item
(a)
MegaWatt Hours
(b)
Line No. Item
(a)
MegaWatt Hours
(b)
1
SOURCES OF ENERGY
21
DISPOSITION OF ENERGY
2
Generation (Excluding Station Use):
22
Sales to Ultimate Consumers (Including Interdepartmental Sales)
3
Steam
23
Requirements Sales for Resale (See instruction 4, page 311.)
4
Nuclear
24
Non-Requirements Sales for Resale (See instruction 4, page 311.)
5
Hydro-Conventional
25
Energy Furnished Without Charge
6
Hydro-Pumped Storage
26
Energy Used by the Company (Electric Dept Only, Excluding Station Use)
7
Other
27
Total Energy Losses
8
Less Energy for Pumping
27.1
Total Energy Stored
9
Net Generation (Enter Total of lines 3 through 8)
28
TOTAL (Enter Total of Lines 22 Through 27.1) MUST EQUAL LINE 20 UNDER SOURCES
10
Purchases (other than for Energy Storage)
10.1
Purchases for Energy Storage
11
Power Exchanges:
12
Received
13
Delivered
14
Net Exchanges (Line 12 minus line 13)
15
Transmission For Other (Wheeling)
16
Received
17
Delivered
18
Net Transmission for Other (Line 16 minus line 17)
19
Transmission By Others Losses
20
TOTAL (Enter Total of Lines 9, 10, 10.1, 14, 18 and 19)


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
MONTHLY PEAKS AND OUTPUT
  1. Report the monthly peak load and energy output. If the respondent has two or more power which are not physically integrated, furnish the required information for each non- integrated system.
  2. Report in column (b) by month the system’s output in Megawatt hours for each month.
  3. Report in column (c) by month the non-requirements sales for resale. Include in the monthly amounts any energy losses associated with the sales.
  4. Report in column (d) by month the system’s monthly maximum megawatt load (60 minute integration) associated with the system.
  5. Report in column (e) and (f) the specified information for each monthly peak load reported in column (d).
Line No.
MonthAxis
Month
(a)
EnergyActivity
Total Monthly Energy
(b)
NonRequiredSalesForResaleEnergy
Monthly Non-Requirement Sales for Resale & Associated Losses
(c)
MonthlyPeakLoad
Monthly Peak - Megawatts
(d)
DayOfMonthlyPeak
Monthly Peak - Day of Month
(e)
HourOfMonthlyPeak
Monthly Peak - Hour
(f)
NAME OF SYSTEM: Enter System
29
January
30
February
31
March
32
April
33
May
34
June
35
July
36
August
37
September
38
October
39
November
40
December
41
Total


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
Steam Electric Generating Plant Statistics

1. Report data for plant in Service only.
2. Large plants are steam plants with installed capacity (name plate rating) of 25,000 Kw or more. Report in this page gas-turbine and internal combustion plants of 10,000 Kw or more, and nuclear plants.
3. Indicate by a footnote any plant leased or operated as a joint facility.
4. If net peak demand for 60 minutes is not available, give data which is available, specifying period.
5. If any employees attend more than one plant, report on line 11 the approximate average number of employees assignable to each plant.
6. If gas is used and purchased on a therm basis report the Btu content or the gas and the quantity of fuel burned converted to Mcf.
7. Quantities of fuel burned (Line 38) and average cost per unit of fuel burned (Line 41) must be consistent with charges to expense accounts 501 and 547 (Line 42) as show on Line 20.
8. If more than one fuel is burned in a plant furnish only the composite heat rate for all fuels burned.
9. Items under Cost of Plant are based on USofA accounts. Production expenses do not include Purchased Power, System Control and Load Dispatching, and Other Expenses Classified as Other Power Supply Expenses.
10. For IC and GT plants, report Operating Expenses, Account Nos. 547 and 549 on Line 25 "Electric Expenses," and Maintenance Account Nos. 553 and 554 on Line 32, "Maintenance of Electric Plant." Indicate plants designed for peak load service. Designate automatically operated plants.
11. For a plant equipped with combinations of fossil fuel steam, nuclear steam, hydro, internal combustion or gas-turbine equipment, report each as a separate plant. However, if a gas-turbine unit functions in a combined cycle operation with a conventional steam unit, include the gas-turbine with the steam plant.
12. If a nuclear power generating plant, briefly explain by footnote (a) accounting method for cost of power generated including any excess costs attributed to research and development; (b) types of cost units used for the various components of fuel cost; and (c) any other informative data concerning plant type fuel used, fuel enrichment type and quantity for the report period and other physical and operating characteristics of plant.

Line No.
Item
(a)
Plant Name:
Plant Name:
1
PlantKind
Kind of Plant (Internal Comb, Gas Turb, Nuclear)
2
PlantConstructionType
Type of Constr (Conventional, Outdoor, Boiler, etc)
3
YearPlantOriginallyConstructed
Year Originally Constructed
4
YearLastUnitOfPlantInstalled
Year Last Unit was Installed
5
InstalledCapacityOfPlant
Total Installed Cap (Max Gen Name Plate Ratings-MW)
6
NetPeakDemandOnPlant
Net Peak Demand on Plant - MW (60 minutes)
7
PlantHoursConnectedToLoad
Plant Hours Connected to Load
8
NetContinuousPlantCapability
Net Continuous Plant Capability (Megawatts)
9
NetContinuousPlantCapabilityNotLimitedByCondenserWater
When Not Limited by Condenser Water
10
NetContinuousPlantCapabilityLimitedByCondenserWater
When Limited by Condenser Water
11
PlantAverageNumberOfEmployees
Average Number of Employees
12
NetGenerationExcludingPlantUse
Net Generation, Exclusive of Plant Use - kWh
13
CostOfLandAndLandRightsSteamProduction
Cost of Plant: Land and Land Rights
14
CostOfStructuresAndImprovementsSteamProduction
Structures and Improvements
15
CostOfEquipmentSteamProduction
Equipment Costs
16
AssetRetirementCostsSteamProduction
Asset Retirement Costs
17
CostOfPlant
Total cost (total 13 thru 20)
18
CostPerKilowattOfInstalledCapacity
Cost per KW of Installed Capacity (line 17/5) Including
19
OperationSupervisionAndEngineeringExpense
Production Expenses: Oper, Supv, & Engr
20
FuelSteamPowerGeneration
Fuel
21
CoolantsAndWater
Coolants and Water (Nuclear Plants Only)
22
SteamExpensesSteamPowerGeneration
Steam Expenses
23
SteamFromOtherSources
Steam From Other Sources
24
SteamTransferredCredit
Steam Transferred (Cr)
25
ElectricExpensesSteamPowerGeneration
Electric Expenses
26
MiscellaneousSteamPowerExpenses
Misc Steam (or Nuclear) Power Expenses
27
RentsSteamPowerGeneration
Rents
28
Allowances
Allowances
29
MaintenanceSupervisionAndEngineeringSteamPowerGeneration
Maintenance Supervision and Engineering
30
MaintenanceOfStructuresSteamPowerGeneration
Maintenance of Structures
31
MaintenanceOfBoilerPlantSteamPowerGeneration
Maintenance of Boiler (or reactor) Plant
32
MaintenanceOfElectricPlantSteamPowerGeneration
Maintenance of Electric Plant
33
MaintenanceOfMiscellaneousSteamPlant
Maintenance of Misc Steam (or Nuclear) Plant
34
PowerProductionExpensesSteamPower
Total Production Expenses
35
ExpensesPerNetKilowattHour
Expenses per Net kWh
35
FuelKindAxis
Plant Name
36
FuelKind
Fuel Kind
37
FuelUnit
Fuel Unit
38
QuantityOfFuelBurned
Quantity (Units) of Fuel Burned
39
FuelBurnedAverageHeatContent
Avg Heat Cont - Fuel Burned (btu/indicate if nuclear)
40
AverageCostOfFuelPerUnitAsDelivered
Avg Cost of Fuel/unit, as Delvd f.o.b. during year
41
AverageCostOfFuelPerUnitBurned
Average Cost of Fuel per Unit Burned
42
AverageCostOfFuelBurnedPerMillionBritishThermalUnit
Average Cost of Fuel Burned per Million BTU
43
AverageCostOfFuelBurnedPerKilowattHourNetGeneration
Average Cost of Fuel Burned per kWh Net Gen
44
AverageBritishThermalUnitPerKilowattHourNetGeneration
Average BTU per kWh Net Generation


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
Hydroelectric Generating Plant Statistics
  1. Large plants are hydro plants of 10,000 Kw or more of installed capacity (name plate ratings).
  2. If any plant is leased, operated under a license from the Federal Energy Regulatory Commission, or operated as a joint facility, indicate such facts in a footnote. If licensed project, give project number.
  3. If net peak demand for 60 minutes is not available, give that which is available specifying period.
  4. If a group of employees attends more than one generating plant, report on line 11 the approximate average number of employees assignable to each plant.
  5. The items under Cost of Plant represent accounts or combinations of accounts prescribed by the Uniform System of Accounts. Production Expenses do not include Purchased Power, System control and Load Dispatching, and Other Expenses classified as "Other Power Supply Expenses."
  6. Report as a separate plant any plant equipped with combinations of steam, hydro, internal combustion engine, or gas turbine equipment.
Line No.
Item
(a)
FERC Licensed Project No.
Plant Name:
FERC Licensed Project No.
Plant Name:
FERC Licensed Project No.
Plant Name:
FERC Licensed Project No.
Plant Name:
FERC Licensed Project No.
Plant Name:
1
PlantKind
Kind of Plant (Run-of-River or Storage)
2
PlantConstructionType
Plant Construction type (Conventional or Outdoor)
3
YearPlantOriginallyConstructed
Year Originally Constructed
4
YearLastUnitOfPlantInstalled
Year Last Unit was Installed
5
InstalledCapacityOfPlant
Total installed cap (Gen name plate Rating in MW)
6
NetPeakDemandOnPlant
Net Peak Demand on Plant-Megawatts (60 minutes)
7
PlantHoursConnectedToLoad
Plant Hours Connect to Load
8
NetPlantCapabilityAbstract
Net Plant Capability (in megawatts)
9
NetPlantCapabilityUnderMostFavorableOperatingConditions
(a) Under Most Favorable Oper Conditions
10
NetPlantCapabilityUnderMostAdverseOperatingConditions
(b) Under the Most Adverse Oper Conditions
11
PlantAverageNumberOfEmployees
Average Number of Employees
12
NetGenerationExcludingPlantUse
Net Generation, Exclusive of Plant Use - kWh
13
CostOfPlantAbstract
Cost of Plant
14
CostOfLandAndLandRightsHydroelectricProduction
Land and Land Rights
15
CostOfStructuresAndImprovementsHydroelectricProduction
Structures and Improvements
16
CostOfReservoirsDamsAndWaterwaysHydroelectricProduction
Reservoirs, Dams, and Waterways
17
EquipmentCostsHydroelectricProduction
Equipment Costs
18
CostOfRoadsRailroadsAndBridgesHydroelectricProduction
Roads, Railroads, and Bridges
19
AssetRetirementCostsHydroelectricProduction
Asset Retirement Costs
20
CostOfPlant
Total cost (total 13 thru 20)
21
CostPerKilowattOfInstalledCapacity
Cost per KW of Installed Capacity (line 20 / 5)
22
ProductionExpensesAbstract
Production Expenses
23
OperationSupervisionAndEngineeringExpense
Operation Supervision and Engineering
24
WaterForPower
Water for Power
25
HydraulicExpenses
Hydraulic Expenses
26
ElectricExpensesHydraulicPowerGeneration
Electric Expenses
27
MiscellaneousHydraulicPowerGenerationExpenses
Misc Hydraulic Power Generation Expenses
28
RentsHydraulicPowerGeneration
Rents
29
MaintenanceSupervisionAndEngineeringHydraulicPowerGeneration
Maintenance Supervision and Engineering
30
MaintenanceOfStructuresHydraulicPowerGeneration
Maintenance of Structures
31
MaintenanceOfReservoirsDamsAndWaterways
Maintenance of Reservoirs, Dams, and Waterways
32
MaintenanceOfElectricPlantHydraulicPowerGeneration
Maintenance of Electric Plant
33
MaintenanceOfMiscellaneousHydraulicPlant
Maintenance of Misc Hydraulic Plant
34
PowerProductionExpensesHydraulicPower
Total Production Expenses (total 23 thru 33)
35
ExpensesPerNetKilowattHour
Expenses per net kWh


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
Pumped Storage Generating Plant Statistics
  1. Large plants and pumped storage plants of 10,000 Kw or more of installed capacity (name plate ratings).
  2. If any plant is leased, operating under a license from the Federal Energy Regulatory Commission, or operated as a joint facility, indicate such facts in a footnote. Give project number.
  3. If net peak demand for 60 minutes is not available, give that which is available, specifying period.
  4. If a group of employees attends more than one generating plant, report on Line 8 the approximate average number of employees assignable to each plant.
  5. The items under Cost of Plant represent accounts or combinations of accounts prescribed by the Uniform System of Accounts. Production Expenses do not include Purchased Power System Control and Load Dispatching, and Other Expenses classified as "Other Power Supply Expenses."
  6. Pumping energy (Line 10) is that energy measured as input to the plant for pumping purposes.
  7. Include on Line 36 the cost of energy used in pumping into the storage reservoir. When this item cannot be accurately computed leave Lines 36, 37 and 38 blank and describe at the bottom of the schedule the company's principal sources of pumping power, the estimated amounts of energy from each station or other source that individually provides more than 10 percent of the total energy used for pumping, and production expenses per net MWH as reported herein for each source described. Group together stations and other resources which individually provide less than 10 percent of total pumping energy. If contracts are made with others to purchase power for pumping, give the supplier contract number, and date of contract.
Line No.
Item
(a)
FERC Licensed Project No.
Plant Name:
FERC Licensed Project No.
Plant Name:
FERC Licensed Project No.
Plant Name:
FERC Licensed Project No.
Plant Name:
1
PlantConstructionType
Type of Plant Construction (Conventional or Outdoor)
2
YearPlantOriginallyConstructed
Year Originally Constructed
3
YearLastUnitOfPlantInstalled
Year Last Unit was Installed
4
InstalledCapacityOfPlant
Total installed cap (Gen name plate Rating in MW)
5
NetPeakDemandOnPlant
Net Peak Demaind on Plant-Megawatts (60 minutes)
6
PlantHoursConnectedToLoad
Plant Hours Connect to Load While Generating
7
NetContinuousPlantCapability
Net Plant Capability (in megawatts)
8
PlantAverageNumberOfEmployees
Average Number of Employees
9
NetGenerationExcludingPlantUse
Generation, Exclusive of Plant Use - kWh
10
EnergyUsedForPumping
Energy Used for Pumping
11
NetOutputForLoad
Net Output for Load (line 9 - line 10) - Kwh
12
CostOfPlantAbstract
Cost of Plant
13
CostOfLandAndLandRightsPumpedStoragePlant
Land and Land Rights
14
CostOfStructuresAndImprovementsPumpedStoragePlant
Structures and Improvements
15
CostOfReservoirsDamsAndWaterwaysPumpedStoragePlant
Reservoirs, Dams, and Waterways
16
CostOfWaterWheelsTurbinesAndGeneratorsPumpedStoragePlant
Water Wheels, Turbines, and Generators
17
CostOfAccessoryElectricEquipmentPumpedStoragePlant
Accessory Electric Equipment
18
CostOfMiscellaneousPowerPlantEquipmentPumpedStoragePlant
Miscellaneous Powerplant Equipment
19
CostOfRoadsRailroadsAndBridgesPumpedStoragePlant
Roads, Railroads, and Bridges
20
AssetRetirementCostsPumpedStoragePlant
Asset Retirement Costs
21
CostOfPlant
Total cost (total 13 thru 20)
22
CostPerKilowattOfInstalledCapacity
Cost per KW of installed cap (line 21 / 4)
23
ProductionExpensesAbstract
Production Expenses
24
OperationSupervisionAndEngineeringExpense
Operation Supervision and Engineering
25
WaterForPower
Water for Power
26
PumpedStorageExpenses
Pumped Storage Expenses
27
ElectricExpensesPumpedStoragePlant
Electric Expenses
28
MiscellaneousPumpedStoragePowerGenerationExpenses
Misc Pumped Storage Power generation Expenses
29
RentsPumpedStoragePlant
Rents
30
MaintenanceSupervisionAndEngineeringPumpedStoragePlant
Maintenance Supervision and Engineering
31
MaintenanceOfStructuresPumpedStoragePlant
Maintenance of Structures
32
MaintenanceOfReservoirsDamsAndWaterwaysPumpedStoragePlant
Maintenance of Reservoirs, Dams, and Waterways
33
MaintenanceOfElectricPlantPumpedStoragePlant
Maintenance of Electric Plant
34
MaintenanceOfMiscellaneousPumpedStoragePlant
Maintenance of Misc Pumped Storage Plant
35
PowerProductionExpenseBeforePumpingExpenses
Production Exp Before Pumping Exp (24 thru 34)
36
PumpingExpenses
Pumping Expenses
37
PowerProductionExpensesPumpedStoragePlant
Total Production Exp (total 35 and 36)
38
ExpensesPerNetKilowattHour
Expenses per kWh (line 37 / 9)
39
ExpensesPerNetKilowattHourGenerationAndPumping
Expenses per KWh of Generation and Pumping (line 37/(line 9 + line 10))


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
GENERATING PLANT STATISTICS (Small Plants)
  1. Small generating plants are steam plants of, less than 25,000 Kw; internal combustion and gas turbine-plants, conventional hydro plants and pumped storage plants of less than 10,000 Kw installed capacity (name plate rating).
  2. Designate any plant leased from others, operated under a license from the Federal Energy Regulatory Commission, or operated as a joint facility, and give a concise statement of the facts in a footnote. If licensed project, give project number in footnote.
  3. List plants appropriately under subheadings for steam, hydro, nuclear, internal combustion and gas turbine plants. For nuclear, see instruction 11, Page 402.
  4. If net peak demand for 60 minutes is not available, give the which is available, specifying period.
  5. If any plant is equipped with combinations of steam, hydro internal combustion or gas turbine equipment, report each as a separate plant. However, if the exhaust heat from the gas turbine is utilized in a steam turbine regenerative feed water cycle, or for preheated combustion air in a boiler, report as one plant.
Production Expenses
Line No.
PlantName
Name of Plant
(a)
YearPlantOriginallyConstructed
Year Orig. Const.
(b)
InstalledCapacityOfPlant
Installed Capacity Name Plate Rating (MW)
(c)
NetPeakDemandOnPlant
Net Peak Demand MW (60 min)
(d)
NetGenerationExcludingPlantUse
Net Generation Excluding Plant Use
(e)
CostOfPlant
Cost of Plant
(f)
PlantCostPerMw
Plant Cost (Incl Asset Retire. Costs) Per MW
(g)
OperatingExpensesExcludingFuel
Operation Exc'l. Fuel
(h)
FuelProductionExpenses
Fuel Production Expenses
(i)
MaintenanceProductionExpenses
Maintenance Production Expenses
(j)
FuelKind
Kind of Fuel
(k)
FuelCostPerMmbtus
Fuel Costs (in cents (per Million Btu)
(l)
GenerationType
Generation Type
(m)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
ENERGY STORAGE OPERATIONS (Large Plants)
  1. Large Plants are plants of 10,000 Kw or more.
  2. In columns (a) (b) and (c) report the name of the energy storage project, functional classification (Production, Transmission, Distribution), and location.
  3. In column (d), report Megawatt hours (MWH) purchased, generated, or received in exchange transactions for storage.
  4. In columns (e), (f) and (g) report MWHs delivered to the grid to support production, transmission and distribution. The amount reported in column (d) should include MWHs delivered/provided to a generator’s own load requirements or used for the provision of ancillary services.
  5. In columns (h), (i), and (j) report MWHs lost during conversion, storage and discharge of energy.
  6. In column (k) report the MWHs sold.
  7. In column (l), report revenues from energy storage operations. In a footnote, disclose the revenue accounts and revenue amounts related to the income generating activity.
  8. In column (m), report the cost of power purchased for storage operations and reported in Account 555.1, Power Purchased for Storage Operations. If power was purchased from an affiliated seller specify how the cost of the power was determined. In columns (n) and (o), report fuel costs for storage operations associated with self-generated power included in Account 501 and other costs associated with self-generated power.
  9. In columns (q), (r) and (s) report the total project plant costs including but not exclusive of land and land rights, structures and improvements, energy storage equipment, turbines, compressors, generators, switching and conversion equipment, lines and equipment whose primary purpose is to integrate or tie energy storage assets into the power grid, and any other costs associated with the energy storage project included in the property accounts listed.
Line No.
Name of the Energy Storage Project
(a)
Functional Classification
(b)
Location of the Project
(c)
MWHs
(d)
MWHs delivered to the grid to support Production
(e)
MWHs delivered to the grid to support Transmission
(f)
MWHs delivered to the grid to support Distribution
(g)
MWHs Lost During Conversion, Storage and Discharge of Energy Production
(h)
MWHs Lost During Conversion, Storage and Discharge of Energy Transmission
(i)
MWHs Lost During Conversion, Storage and Discharge of Energy Distribution
(j)
MWHs Sold
(k)
Revenues from Energy Storage Operations
(l)
Power Purchased for Storage Operations (555.1) (Dollars)
(m)
Fuel Costs from associated fuel accounts for Storage Operations Associated with Self- Generated Power (Dollars)
(n)
Other Costs Associated with Self-Generated Power (Dollars)
(o)
Account for Project Costs
(p)
Production (Dollars)
(q)
Transmission (Dollars)
(r)
Distribution (Dollars)
(s)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35 TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
ENERGY STORAGE OPERATIONS (Small Plants)
  1. Small Plants are plants less than 10,000 Kw.
  2. In columns (a), (b) and (c) report the name of the energy storage project, functional classification (Production, Transmission, Distribution), and location.
  3. In column (d), report project plant cost including but not exclusive of land and land rights, structures and improvements, energy storage equipment and any other costs associated with the energy storage project.
  4. In column (e), report operation expenses excluding fuel, (f), maintenance expenses, (g) fuel costs for storage operations and (h) cost of power purchased for storage operations and reported in Account 555.1, Power Purchased for Storage Operations. If power was purchased from an affiliated seller specify how the cost of the power was determined.
  5. If any other expenses, report in column (i) and footnote the nature of the item(s).
BALANCE AT BEGINNING OF YEAR
Line No.
Name of the Energy Storage Project
(a)
Functional Classification
(b)
Location of the Project
(c)
Project Cost
(d)
Operations (Excluding Fuel used in Storage Operations)
(e)
Maintenance
(f)
Cost of fuel used in storage operations
(g)
Account No. 555.1, Power Purchased for Storage Operations
(h)
Other Expenses
(i)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36 TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
TRANSMISSION LINE STATISTICS
  1. Report information concerning transmission lines, cost of lines, and expenses for year. List each transmission line having nominal voltage of 132 kilovolts or greater. Report transmission lines below these voltages in group totals only for each voltage. If required by a State commission to report individual lines for all voltages, do so but do not group totals for each voltage under 132 kilovolts.
  2. Transmission lines include all lines covered by the definition of transmission system plant as given in the Uniform System of Accounts. Do not report substation costs and expenses on this page.
  3. Exclude from this page any transmission lines for which plant costs are included in Account 121, Nonutility Property.
  4. Indicate whether the type of supporting structure reported in column (e) is: (1) single pole wood or steel; (2) H-frame wood, or steel poles; (3) tower; or (4) underground construction If a transmission line has more than one type of supporting structure, indicate the mileage of each type of construction by the use of brackets and extra lines. Minor portions of a transmission line of a different type of construction need not be distinguished from the remainder of the line.
  5. Report in columns (f) and (g) the total pole miles of each transmission line. Show in column (f) the pole miles of line on structures the cost of which is reported for the line designated; conversely, show in column (g) the pole miles of line on structures the cost of which is reported for another line. Report pole miles of line on leased or partly owned structures in column (g). In a footnote, explain the basis of such occupancy and state whether expenses with respect to such structures are included in the expenses reported for the line designated.
  6. Do not report the same transmission line structure twice. Report Lower voltage Lines and higher voltage lines as one line. Designate in a footnote if you do not include Lower voltage lines with higher voltage lines. If two or more transmission line structures support lines of the same voltage, report the pole miles of the primary structure in column (f) and the pole miles of the other line(s) in column (g).
  7. Designate any transmission line or portion thereof for which the respondent is not the sole owner. If such property is leased from another company, give name of lessor, date and terms of Lease, and amount of rent for year. For any transmission line other than a leased line, or portion thereof, for which the respondent is not the sole owner but which the respondent operates or shares in the operation of, furnish a succinct statement explaining the arrangement and giving particulars (details) of such matters as percent ownership by respondent in the line, name of co-owner, basis of sharing expenses of the Line, and how the expenses borne by the respondent are accounted for, and accounts affected. Specify whether lessor, co-owner, or other party is an associated company.
  8. Designate any transmission line leased to another company and give name of Lessee, date and terms of lease, annual rent for year, and how determined. Specify whether lessee is an associated company.
  9. Base the plant cost figures called for in columns (j) to (l) on the book cost at end of year.
DESIGNATION VOLTAGE (KV) - (Indicate where other than 60 cycle, 3 phase) LENGTH (Pole miles) - (In the case of underground lines report circuit miles) COST OF LINE (Include in column (j) Land, Land rights, and clearing right-of-way) EXPENSES, EXCEPT DEPRECIATION AND TAXES
Line No.
TransmissionLineStartPoint
From
TransmissionLineEndPoint
To
OperatingVoltageOfTransmissionLine
Operating
DesignedVoltageOfTransmissionLine
Designated
SupportingStructureOfTransmissionLineType
Type of Supporting Structure
LengthForStandAloneTransmissionLines
On Structure of Line Designated
LengthForTransmissionLinesAggregatedWithOtherStructures
On Structures of Another Line
NumberOfTransmissionCircuits
Number of Circuits
SizeOfConductorAndMaterial
Size of Conductor and Material
CostOfLandAndLandRightsTransmissionLines
Land
ConstructionAndOtherCostsTransmissionLines
Construction Costs
OverallCostOfTransmissionLine
Total Costs
OperatingExpensesOfTransmissionLine
Operation Expenses
MaintenanceExpensesOfTransmissionLine
Maintenance Expenses
RentExpensesOfTransmissionLine
Rents
OverallExpensesOfTransmissionLine
Total Expenses
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(l)
(m)
(n)
(o)
(p)
1
ALBURTIS
BRANCHBURG
500
500
5.02
0.00
1
2493 ACAR
729,596
729,596
2
ALBURTIS
JUNIATA
500
500
61.19
0.00
1
2493 ACAR
11,873,470
11,873,470
3
CONASTONE
HUNTERSTOWN
500
500
0.30
(b)
14.73
1
2493 ACAR
1,227,009
1,227,009
4
CONEMAUGH
JUNIATA
500
500
106.17
0.00
1
2493 ACAR
16,982,799
16,982,799
5
CONEMAUGH
KEYSTONE
500
500
25.83
0.00
1
2493 ACAR
6,111,629
6,111,629
6
CONEMAUGH
VINCO
500
500
0.04
(c)
11.05
1
2493 ACAR
374,122
374,122
7
HOSENSACK
LAUSCHTOWN
500
500
35.06
0.00
1
2493 ACAR
9,859,614
9,859,614
8
HUNTERSTOWN
VINCO
500
500
0.36
(d)
100.66
1
2493 ACAR
529,494
1,955,867
2,485,361
9
JUNIATA
KEYSTONE
500
500
102.40
0.00
1
2493 ACAR
14,920,295
14,920,295
10
JUNIATA
THREE MILE ISLAND
500
500
27.22
0.00
1
2493 ACAR
7,071,717
7,071,717
11
LAUSCHTOWN
THREE MILE ISLAND
500
500
39.66
0.00
1
2493 ACAR
10,884,973
10,884,973
12
PEACH BOTTOM
THREE MILE ISLAND
500
500
18.34
0.00
1
2493 ACAR
2,698,322
2,698,322
13
ARMSTRONG
HANDSOME LAKE
345
345
32.93
0.00
1
2493 ACAR
6,307,833
6,307,833
14
ARMSTRONG
HOMER CITY
345
345
32.81
0.00
1
2493 ACAR
7,478,242
7,478,242
15
ASHTABULA
ERIE WEST
345
345
7.15
0.00
1
1033.5 ACSR
1,050,091
1,050,091
16
ERIE SOUTH
ERIE WEST
345
345
20.25
0.00
1
1033.5 ACSR
3,969,867
3,969,867
17
ERIE WEST
WAYNE
345
345
35.70
0.00
1
2493 ACAR
10,407,585
10,407,585
18
HANDSOME LAKE
WAYNE
345
345
19.40
0.00
1
2493 ACAR
5,303,018
5,303,018
19
ALBURTIS
HOSENSACK
230
230
0.18
6.44
1
1590 ACSR
434,039
434,039
20
ALBURTIS
LYONS
230
230
6.38
9.51
1
1590 ACSR
2,454,233
2,454,233
21
ALTOONA
BEAR ROCK
230
230
15.84
0.00
1
1033.5 ACSR
3,024,237
3,024,237
22
ALTOONA
RAYSTOWN
230
230
16.95
0.00
1
1033.5 ACSR
2,620,923
2,620,923
23
BEAR ROCK
FIDDLERS GREEN
230
230
5.56
0.00
1
1033.5 ACSR
409,393
409,393
24
BERKS
SOUTH LEBANON
230
230
14.05
5.65
1
1033.5 ACSR; 1590 ACSR
1,638,098
1,638,098
25
BERKS
SOUTH READING
230
230
9.60
0.00
1
1033.5 ACSR
570,395
570,395
26
BOONETOWN
NORTH BOYERTOWN
230
230
13.88
0.00
1
795 ACSR
1,542,754
1,542,754
27
BOONETOWN
SOUTH READING
230
230
3.99
0.00
1
795 ACSR
383,528
383,528
28
BRUNNER ISLAND
YORKANA
230
230
12.60
0.00
1
1590 ACSR
2,267,566
2,267,566
29
COPPERSTONE PPL
DAUPHIN PPL
230
230
11.11
1.17
1
1033.5 ACSR; 1590 ACSR
2,474,305
2,474,305
30
COPPERSTONE PPL
HUMMELSTOWN PPL
230
230
2.85
0.00
1
1590 ACSR
634,723
634,723
31
COPPERSTONE PPL
MIDDLETOWN JUNCTION
230
230
6.76
0.00
1
1590 ACSR
1,442,812
1,442,812
32
COPPERSTONE PPL
NORTH LEBANON
230
230
6.54
11.25
1
1590 ACSR
2,112,955
2,112,955
33
DAUPHIN
JUNIATA
230
230
17.22
0.00
1
1033.5 ACSR; 804.5 ACSR
1,400,418
1,400,418
34
EAST TOWANDA
HILLSIDE
230
230
21.50
0.00
1
1033.5 ACSR
3,052,186
3,052,186
35
EAST TOWANDA
MARSHALL
230
230
37.17
0.00
1
1033.5 ACSR
3,680,177
3,680,177
36
EAST TOWANDA
NORTH MESHOPPEN
230
230
22.08
0.00
1
1033.5 ACSR
472,959
1,388,264
1,861,223
37
ELKO
SHAWVILLE
230
230
28.56
0.00
1
1033.5 ACSR
4,192,970
4,192,970
38
ELKO
SQUAB HOLLOW
230
230
4.03
0.00
1
1033.5 ACSR
180,889
180,889
39
ERIE EAST
FOUR MILE JUNCTION
230
230
9.31
0.00
1
1033.5 ACSR
985,338
985,338
40
ERIE EAST
SOUTH RIPLEY
230
230
4.46
0.00
1
1033.5 ACSR
540,030
540,030
41
ERIE SOUTH
FOUR MILE JUNCTION
230
230
4.44
0.00
1
1033.5 ACSR
431,886
431,886
42
ERIE SOUTH
WARREN
230
230
50.13
0.00
1
1033.5 ACSR
3,891,377
3,891,377
43
FIDDLERS GREEN
JOHNSTOWN
230
230
14.95
0.00
1
1033.5 ACSR
1,100,797
1,100,797
44
FOREST
GLADE
230
230
35.80
0.00
1
1033.5 ACSR
5,839,520
5,839,520
45
FOREST
SQUAB HOLLOW
230
230
7.84
0.00
1
1033.5 ACSR
2,095,000
2,095,000
46
GILBERT
SPRINGFIELD
230
230
10.94
0.32
1
1590 ACSR
60,266
4,010,771
4,071,037
47
GLADE
LEWIS RUN
230
230
21.83
1.35
1
1590 ACSR; 1033.5 ACSR
4,719,877
4,719,877
48
GLADE
WARREN
230
230
11.52
0.00
1
1033.5 ACSR
881,082
881,082
49
GREYSTONE
PORTLAND
230
230
0.22
0.00
1
1590 ACSS/AW
19,302
19,302
50
HOMER CITY
HOOVERSVILLE
230
230
34.45
0.00
1
1590 ACSR
5,988,913
5,988,913
51
HOMER CITY
JOHNSTOWN
230
230
19.30
0.00
1
1590 ACSR; 636 ACSR
4,146,143
4,146,143
52
HOMER CITY
KEYSTONE
230
230
13.02
0.00
1
636 ACSR
4,079,654
4,079,654
53
HOMER CITY
SEWARD
230
230
14.81
0.00
1
636 ACSR; 1590 ACSR; 1590 ACSS/AW
3,762,712
3,762,712
54
HOSENSACK
NORTH BOYERTOWN
230
230
9.63
0.00
1
795 ACSR; 1033.5 ACSR
1,070,369
1,070,369
55
HOSENSACK
NORTH TEMPLE
230
230
23.06
0.00
1
1108.6 ACAR; 1590 ACSR
2,095,848
2,095,848
56
HOSENSACK
SPRINGFIELD
230
230
9.46
0.00
1
1590 ACSR
265,673
265,673
57
HUMMELSTOWN
MIDDLETOWN JUNCTION - STEELTON
230
230
6.79
0.00
1
1033.5 ACSR
2,155,278
2,155,278
58
HUMMELSTOWN
NORTH HERSHEY
230
230
0.06
6.38
1
1590 ACSR
465,521
465,521
59
HUNTERSTOWN
JACKSON
230
230
18.43
0.00
1
1590 ACSR
4,069,577
4,069,577
60
IRONWOOD
NORTH LEBANON
230
230
5.19
0.00
1
1590 ACSR
2,315,011
2,315,011
61
IRONWOOD
SOUTH LEBANON
230
230
2.80
0.00
1
1590 ACSR
1,869,820
1,869,820
62
JACKSON
THREE MILE ISLAND
230
230
18.05
0.00
1
1033.5 ACSR
3,854,223
3,854,223
63
JACKSON
YORKANA
230
230
18.99
0.00
1
1590 ACSR
3,002,739
3,002,739
64
JOHNSTOWN
SEWARD
230
230
6.68
0.00
1
1033.5 ACSR; 1590 ACSS/AW
1,289,028
1,289,028
65
JUNIATA
LEWISTOWN
230
230
24.68
0.00
1
1033.5 ACSR
1,817,718
1,817,718
66
KITTATINNY
PORTLAND
230
230
0.00
0.22
1
1590 ACSS/AW
165,857
165,857
67
LACKAWANNA PPL
NORTH MESHOPPEN
230
230
26.89
0.00
1
1033.5 ACSS
428,486
93,994,095
94,422,581
68
LEWIS RUN
PIERCE BROOK
230
230
15.61
0.00
1
1033.5 ACSR
3,297,653
45,257,674
48,555,327
69
LEWISTOWN
RAYSTOWN
230
230
26.88
0.45
1
1033.5 ACSR
3,096,269
3,096,269
70
LEWISTOWN
SHINGLETOWN
230
230
25.68
0.44
1
1033.5 ACSR
3,541,041
3,541,041
71
LEWISTOWN
YEAGERTOWN NO 1
230
230
5.24
0.00
1
1033.5 ACSR
1,176,468
1,176,468
72
LEWISTOWN
YEAGERTOWN NO 2
230
230
4.62
0.68
1
1033.5 ACSR
876,227
876,227
73
LYONS
NORTH TEMPLE
230
230
0.33
11.74
1
1108.6 ACAR; 1590 ACSR
928,279
928,279
74
MARSHALL
MOSHANNON
230
230
68.66
0.00
1
1033.5 ACSR
4,806,577
4,806,577
75
MARTINS CREEK
NORTHWOOD
230
230
0.58
0.00
1
1033.5 ACSR
144,045
144,045
76
MARTINS CREEK
PORTLAND
230
230
4.18
0.00
1
2493 ACAR; 1590 ACSR
1,167,390
1,167,390
77
MIDDLETOWN JUNCTION
SOUTH LEBANON
230
230
24.45
0.00
1
1033.5 ACSR; 1590 ACSR
3,419,297
3,419,297
78
MIDDLETOWN JUNCTION
THREE MILE ISLAND NO 1
230
230
1.44
0.00
1
1033.5 ACSR
569,464
569,464
79
MIDDLETOWN JUNCTION
THREE MILE ISLAND NO 2
230
230
1.53
0.00
1
1033.5 ACSR
733,263
733,263
80
MOSHANNON
SHAWVILLE
230
230
11.95
0.00
1
1033.5 ACSR
1,339,597
1,339,597
81
NORTH HERSHEY
NORTH TEMPLE
230
230
0.21
40.32
1
1590 ACSR
1,258,676
1,258,676
82
NORTH LEBANON
NORTHKILL
230
230
0.06
17.42
1
1590 ACSR
1,802,528
1,802,528
83
NORTH TEMPLE
NORTHKILL
230
230
0.10
11.71
1
1590 ACSR
1,338,505
1,338,505
84
NORTH TEMPLE
ONTELAUNEE
230
230
1.26
0.00
1
1590 ACSR
130,844
130,844
85
NORTHWOOD
QUARRY
230
230
0.18
0.40
1
1033.5 ACSR
145,957
145,957
86
SHAWVILLE
SHINGLETOWN
230
230
40.69
0.00
1
1033.5 ACSR
4,776,466
4,776,466
87
ARMSTRONG
BROOKVILLE
138
138
0.54
0.00
1
1033.5 ACSR
87,697
87,697
88
BLAIRSVILLE EAST
SOCIAL HALL
138
138
4.73
0.00
1
636 ACSR
565,763
565,763
89
BROOKVILLE
SQUAB HOLLOW
138
138
0.54
0.00
1
1033.5 ACSR
113,518
113,518
90
CARROLL
GERMANTOWN
138
138
2.73
0.00
1
556.5 ACSR
377,175
377,175
91
GRAND POINT
ROXBURY
138
138
5.63
0.00
1
636 ACSR
2,181,023
2,181,023
92
Total 115kV Lines
115
115
1,747.76
156
10,275,195
492,740,682
503,015,877
93
Total 69kV Lines
69
69
422.42
57
382,127
336,583,352
336,965,479
94
Total 46kV Lines
46
46
365.72
85,970,672
85,970,672
95
Operation and Maintenance Expense
2,601,528
33,382,398
13,932,206
49,916,132
36 TOTAL
4,034.13
251.89
304
15,446,180
1,311,162,522
1,326,608,702
2,601,528
33,382,398
13,932,206
49,916,132


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
FOOTNOTE DATA

(a) Concept: SupportingStructureOfTransmissionLineType
Supporting Structure Legend
TWR Tower
SP Steel Pole
WP Wood Pole
SPH 2-Pole Steel H-Frame
WPH Wood H-Frame
WPK Wood K-Frame
(b) Concept: LengthForTransmissionLinesAggregatedWithOtherStructures
Owned by the Conemaugh Transmission Owners Group
(c) Concept: LengthForTransmissionLinesAggregatedWithOtherStructures
Owned by the Conemaugh Transmission Owners Group
(d) Concept: LengthForTransmissionLinesAggregatedWithOtherStructures
Owned by the Conemaugh Transmission Owners Group

Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
TRANSMISSION LINES ADDED DURING YEAR
  1. Report below the information called for concerning Transmission lines added or altered during the year. It is not necessary to report minor revisions of lines.
  2. Provide separate subheadings for overhead and under- ground construction and show each transmission line separately. If actual costs of competed construction are not readily available for reporting columns (l) to (o), it is permissible to report in these columns the costs. Designate, however, if estimated amounts are reported. Include costs of Clearing Land and Rights-of-Way, and Roads and Trails, in column (l) with appropriate footnote, and costs of Underground Conduit in column (m).
  3. If design voltage differs from operating voltage, indicate such fact by footnote; also where line is other than 60 cycle, 3 phase, indicate such other characteristic.
LINE DESIGNATION SUPPORTING STRUCTURE CIRCUITS PER STRUCTURE CONDUCTORS LINE COST
Line No.
TransmissionLineStartPoint
From
TransmissionLineEndPoint
To
LengthOfTransmissionLineAdded
Line Length in Miles
SupportingStructureOfTransmissionLineType
Type
AverageNumberOfSupportingStructuresOfTransmissionLinePerMiles
Average Number per Miles
NumberOfTransmissionCircuitsPerStructurePresent
Present
NumberOfTransmissionCircuitsPerStructureUltimate
Ultimate
ConductorSize
Size
ConductorSpecification
Specification
ConductorConfigurationAndSpacing
Configuration and Spacing
OperatingVoltageOfTransmissionLine
Voltage KV (Operating)
CostOfLandAndLandRightsTransmissionLinesAdded
Land and Land Rights
CostOfPolesTowersAndFixturesTransmissionLinesAdded
Poles, Towers and Fixtures
CostOfConductorsAndDevicesTransmissionLinesAdded
Conductors and Devices
Asset Retire. Costs
CostOfTransmissionLinesAdded
Total
SupportingStructureConstructionType
Construction
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(l)
(m)
(n)
(o)
(p)
(q)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
TOTAL


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
SUBSTATIONS
  1. Report below the information called for concerning substations of the respondent as of the end of the year.
  2. Substations which serve only one industrial or street railway customer should not be listed below.
  3. Substations with capacities of Less than 10 MVA except those serving customers with energy for resale, may be grouped according to functional character, but the number of such substations must be shown.
  4. Indicate in column (b) the functional character of each substation, designating whether transmission or distribution and whether attended or unattended. At the end of the page, summarize according to function the capacities reported for the individual stations in column (f).
  5. Show in columns (I), (j), and (k) special equipment such as rotary converters, rectifiers, condensers, etc. and auxiliary equipment for increasing capacity.
  6. Designate substations or major items of equipment leased from others, jointly owned with others, or operated otherwise than by reason of sole ownership by the respondent. For any substation or equipment operated under lease, give name of lessor, date and period of lease, and annual rent. For any substation or equipment operated other than by reason of sole ownership or lease, give name of co-owner or other party, explain basis of sharing expenses or other accounting between the parties, and state amounts and accounts affected in respondent's books of account. Specify in each case whether lessor, co-owner, or other party is an associated company.
Character of Substation VOLTAGE (In MVa) Conversion Apparatus and Special Equipment
Line No.
SubstationNameAndLocation
Name and Location of Substation
(a)
SubstationCharacterDescription
Transmission or Distribution
(b)
SubstationCharacterAttendedOrUnattended
Attended or Unattended
(b-1)
PrimaryVoltageLevel
Primary Voltage (In MVa)
(c)
SecondaryVoltageLevel
Secondary Voltage (In MVa)
(d)
TertiaryVoltageLevel
Tertiary Voltage (In MVa)
(e)
SubstationInServiceCapacity
Capacity of Substation (In Service) (In MVa)
(f)
NumberOfTransformersInService
Number of Transformers In Service
(g)
Number of Spare Transformers
(h)
ConversionApparatusAndSpecialEquipmentType
Type of Equipment
(i)
NumberOfConversionApparatusAndSpecialEquipmentUnits
Number of Units
(j)
CapacityOfConversionApparatusAndSpecialEquipment
Total Capacity (In MVa)
(k)
1
ALTOONA, HOLLIDAYSBURG, PA
Transmission
Unattended
230
46.00
75
1
1
2
CAMBRIASLOPE, EBENSBURG, PA
Transmission
Unattended
115
46.00
13.20
75
1
1
3
CLAYSBURG, EAST FREEDOM, PA
Transmission
Unattended
115
46.00
13.20
75
1
0
4
EASTTOWANDA, WYSOX, PA
Transmission
Unattended
230
115.00
13.20
524
2
0
5
ERIESOUTH, ERIE, PA
Transmission
Unattended
230
115.00
12.47
524
2
1
6
ERIESOUTH, ERIE, PA
Transmission
Unattended
345
230.00
13.20
1004
2
0
7
ERIEWEST, CRANESVILLE, PA
Transmission
Unattended
345
115.00
13.84
448
2
1
8
FOREST, RIDGWAY, PA
Transmission
Unattended
230
115.00
13.00
300
1
0
9
GARRETT, MCHENRY, MD
Transmission
Unattended
138
115.00
3.30
134
1
0
10
GERMANTOWN, LITTLESTOWN, PA
Transmission
Unattended
138
115.00
13.20
224
1
0
11
HILLVALLEY, MOUNT UNION, PA
Transmission
Unattended
115
46.00
100
1
0
12
HOOVERSVILLE, HOOVERSVILLE, PA
Transmission
Unattended
230
115.00
300
1
0
13
HOSENSACK, ZIONSVILLE, PA
Transmission
Unattended
230
115.00
224
1
0
14
HUNTERSTOWN, GETTYSBURG, PA
Transmission
Unattended
230
115.00
13.20
600
2
0
15
HUNTERSTOWN, GETTYSBURG, PA
Transmission
Unattended
500
230.00
13.80
729
3
0
16
JACKSON, YORK, PA
Transmission
Unattended
115
69.00
56
1
0
17
JACKSON, YORK, PA
Transmission
Unattended
230
115.00
13.20
692
3
0
18
JOHNSTOWN, JOHNSTOWN, PA
Transmission
Unattended
230
115.00
13.20
300
1
0
19
KEYSTONE, SHELOCTA, PA
Transmission
Unattended
500
230.00
20.00
351
3
1
20
LEWISTOWN, LEWISTOWN, PA
Transmission
Unattended
230
115.00
13.20
300
1
0
21
LEWISTOWN, LEWISTOWN, PA
Transmission
Unattended
230
46.00
13.00
200
2
0
22
LYONS, KUTZTOWN, PA
Transmission
Unattended
230
69.00
336
2
0
23
MIDDLETOWNJUNCTION, MIDDLETOWN, PA
Transmission
Unattended
230
69.00
13.00
168
1
0
24
MIDDLETOWNJUNCTION, MIDDLETOWN, PA
Transmission
Unattended
230
115.00
600
2
1
25
NORTHBOYERTOWN, Bechtelsville, PA
Transmission
Unattended
230
69.00
168
1
0
26
NORTHHERSHEY, Hummelstown, PA
Transmission
Unattended
230
69.00
112
1
0
27
NORTHKILL, BERNVILLE, PA
Transmission
Unattended
230
69.00
168
1
0
28
NORTHLEBANON, LEBANON, PA
Transmission
Unattended
230
69.00
336
2
0
29
NORTHMESHOPPEN, MESHOPPEN, PA
Transmission
Unattended
230
115.00
12.67
340
2
0
30
NORTHTEMPLE, TEMPLE, PA
Transmission
Unattended
230
69.00
448
2
0
31
NORTHWOOD, EASTON, PA
Transmission
Attended
230
115.00
13.20
300
1
0
32
PORTLANDSTATION, MOUNT BETHEL, PA
Transmission
Unattended
230
115.00
13.20
300
1
0
33
RAYSTOWN, JUNIATA, PA
Transmission
Unattended
230
46.00
13.80
75
1
0
34
ROXBURYTRANSMISSION, ROXBURY, PA
Transmission
Unattended
138
115.00
224
1
0
35
SEWARD, NEW FLORENCE, PA
Transmission
Unattended
230
115.00
12.47
448
2
0
36
SHAWVILLE, CLEARFIELD, PA
Transmission
Unattended
230
115.00
17.20
230
2
0
37
SMITHSTREET, YORK, PA
Transmission
Attended
115
69.00
13.80
75
4
1
38
SOUTHLEBANON, LEBANON, PA
Transmission
Unattended
230
69.00
112
1
0
39
SOUTHREADING, READING, PA
Transmission
Unattended
230
69.00
448
2
0
40
SUMMIT, CRESSON, PA
Transmission
Unattended
115
46.00
11.95
58
4
0
41
TMI500, MIDDLETOWN, PA
Transmission
Unattended
500.00
230.00
750
3
1
42
TYRONENORTH, TYRONE, PA
Transmission
Unattended
115.00
46.00
2.40
33
1
0
43
WARREN, WARREN, PA
Transmission
Unattended
230.00
115.00
13.20
524
2
0
44
WAYNE, COCHRANTON, PA
Transmission
Unattended
345.00
115.00
13.84
448
2
0
45
WESTFALL, ALTOONA, PA
Transmission
Unattended
115.00
46.00
13.20
127
3
0
46
YEAGERTOWN, YEAGERTOWN, PA
Transmission
Unattended
230.00
46.00
150
2
0
47
YORKANA, YORKANA, PA
Transmission
Unattended
230.00
115.00
13.20
524
2
0
48
TotalDistributionSubstationMember
0
49
TotalGenerationSubstationMember
0
50
TotalTransmissionSubstationMember
0
51
Total
0


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
TRANSACTIONS WITH ASSOCIATED (AFFILIATED) COMPANIES
  1. Report below the information called for concerning all non-power goods or services received from or provided to associated (affiliated) companies.
  2. The reporting threshold for reporting purposes is $250,000. The threshold applies to the annual amount billed to the respondent or billed to an associated/affiliated company for non-power goods and services. The good or service must be specific in nature. Respondents should not attempt to include or aggregate amounts in a nonspecific category such as "general".
  3. Where amounts billed to or received from the associated (affiliated) company are based on an allocation process, explain in a footnote.
Line No.
Description of the Good or Service
(a)
Name of Associated/Affiliated Company
(b)
Account(s) Charged or Credited
(c)
Amount Charged or Credited
(d)
1
Non-power Goods or Services Provided by Affiliated
2
Provide Corporate Responsibility and Communications Support
FirstEnergy Service Company
260,173
3
Provide President & CEO Support
FirstEnergy Service Company
640,328
4
Inventory Carrying Charges on Service Company Assets
FirstEnergy Service Company
1,858,475
5
Provide Transmission & Distribution Support
FirstEnergy Service Company
40,210,065
6
Provide Compliance & Regulated Services Support
FirstEnergy Service Company
1,240,264
7
Provide Customer Support
FirstEnergy Service Company
6,968
8
Interest Expense -  Regulated Money Pool
FirstEnergy Corp.
1,590,177
9
Provide SVP & Chief Financial Officer Support
FirstEnergy Service Company
88,384
10
Provide Information Technology Support
FirstEnergy Service Company
9,429,545
11
Rent  -  Akron Control Facility
American Transmission Systems, Inc.
3,138,249
12
Provide Supply Chain Support
FirstEnergy Service Company
3,397,043
13
Rent  -  Wadsworth Facility
American Transmission Systems, Inc.
2,981,532
14
Provide Accounting & Tax Support
FirstEnergy Service Company
3,871,953
15
Rent -Center for Advanced Energy Technology (CAET)
American Transmission Systems, Inc.
3,121,064
16
Provide Treasury Support
FirstEnergy Service Company
158,598
17
Rent - Pottsville Pike
Metropolitan Edison Company
325,528
18
Provide Strategy, LT Planning & Business Performance Support
FirstEnergy Service Company
175,179
19
Rent - MetEd Facilities Use
Metropolitan Edison Company
2,248,033
20
Provide Risk Support
FirstEnergy Service Company
223,589
21
Rent - Penelec Facilities Use
Pennsylvania Electric Company
2,026,621
22
Ground Lease
Metropolitan Edison Company
2,458,582
23
Provide Internal Auditing Support
FirstEnergy Service Company
244,225
24
Ground Lease
Pennsylvania Electric Company
1,580,160
25
Provide Legal Support
FirstEnergy Service Company
794,114
26
Provide Rates & Regulatory Affairs Support
FirstEnergy Service Company
285,090
27
Rent  -  Greensburg Corporate Center
West Penn Power Company
367,741
28
Provide Corporate Affairs & Community Involvement Support
FirstEnergy Service Company
74,371
29
Provide External Affairs Support
FirstEnergy Service Company
45,796
30
(a)
Allocation Factors
31
Provide Ethics & Compliance Support
FirstEnergy Service Company
262,453
32
Provide Human Resources & Corporate Services Support
FirstEnergy Service Company
2,829,169
19
20
Non-power Goods or Services Provided for Affiliated
21
Interest Income - Regulated Money Pool
FirstEnergy Corp.
4,334,642
22
Transmission Charge - TMI Unit 1
Jersey Central Power & Light Company
1,998,563
23
Transmission Investment Power Pool Agreement
Jersey Central Power & Light Company
1,762,524
42


Name of Respondent:

Mid-Atlantic Interstate Transmission, LLC
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

03/26/2024
Year/Period of Report

End of:
2023
/
Q4
FOOTNOTE DATA

(a) Concept: DescriptionOfNonPowerGoodOrService
Factor Abbreviations

MA Multiple Factor – All
MN Multiple Factor Non-Utility
MT Multiple Factor Utility & Non-Utility
MU Multiple Factor Utility
CR Customer Ratio
DCR Direct Charge Ratio
HC Head Count
IS Inserting Service
NIS Number of Intel Servers
PE Participating Employees
PV Print Volume
SH Shopping Customers
SSC Server Support Composite
WS Workstation Support

‘Direct’ indicates that 100% of the costs assess to one legal entity

MA – Each Subsidiary benefiting from receiving the product or service will be charged a proportion of the Indirect Costs. The FirstEnergy Holding Co bears 5% of the product or service costs being allocated. The remaining 95% of the costs will be allocated between the Utility and Non-Utility Subsidiaries based on FirstEnergy’s equity investment in the respective groups. A subsequent step then allocates among the Utility Subsidiaries based upon the “Multiple Factor - Utility” (MU) method and among the Non-Utility Subsidiaries based upon the “Multiple Factor - Non-Utility” (MN) method, both explained below.

MN – Each Non-Utility Subsidiary benefiting from receiving the product or service will be charged a proportion of the Indirect Costs based upon the total assets of each Non-Utility Subsidiary, including the generating assets under operating leases to the Utility Subsidiaries.

MT – The product or service costs being charged are allocated 100% between Utility and Non-Utility Subsidiaries in the same manner as MA above. Unlike MA, FirstEnergy Holding Co does not bear any of the allocation.
MU – Each Utility Subsidiary benefiting from receiving the product or service will be charged a proportion of the Indirect Costs based upon the sum of the weighted averages of (1) Gross transmission and/or distribution plant; (2) Operating and maintenance expense excluding purchase power and fuel costs: and (3) Transmission and/or distribution revenues, excluding transactions with affiliates. Each of the 3 components is weighted equally
(b) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Corporate Responsibility and Communications Support 426.1 $ 49 
Cost Allocation Factors Used - Direct, CR, MA, MU 911 45,907 
920 115,134 
922 (60,959)
923 80,452 
930.2
107 79,026 
108 556 
$ 260,173 
(c) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide President & CEO Support 920 $ 98,072 
Cost Allocation Factors Used - Direct, MA, MU 922 (181,213)
923 542,256 
107 181,213 
$ 640,328 
(d) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Inventory Carrying Charges on Service Company Assets 923 $ 1,858,475 
Cost Allocation Factors Used - Direct
(e) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Transmission & Distribution Support 426.4 $ 38 
Cost Allocation Factors Used - Direct, CR, DCR 426.5 801 
                                                   MA, MT, MU 560 893,651 
561 12,068 
561.1 559,372 
561.2 1,568,516 
561.5 183,509 
562 344,306 
566 844,892 
568 8,945,442 
920 396,011 
922 (155,668)
923 508,187 
930.2 120,472 
107 25,151,851 
108 836,617 
$ 40,210,065 
(f) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Compliance & Regulated Services Support 426.4 $ 43 
Cost Allocation Factors Used - Direct, MA, MU 566 427,195 
568 508,157 
920 72,450 
923 47,414 
930.2 27,315 
107 149,958 
108 7,732 
$ 1,240,264 
(g) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Customer Support 920 $ 1,772 
Cost Allocation Factors Used - Direct, CR, MA, MT, MU, SH 922 (762)
923 4,488 
930.2 604 
107 866 
$ 6,968 
(h) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide SVP & Chief Financial Officer Support 920 $ 39,412 
Cost Allocation Factors Used - MA 922 (24,946)
923 48,676 
930.2 296 
107 24,946 
$ 88,384 
(i) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Information Technology Support 560 $ 480,139 
Cost Allocation Factors Used - Direct, CR, DCR, MA 566 239,395 
                                                     MT, MU, PV, WS 569.1 280 
569.2 1,134 
569.3 17,939 
920 1,690,960 
922 (502,198)
923 3,287,976 
926 (17)
930.2 602 
107 4,132,787 
108 80,548 
$ 9,429,545 
(j) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Supply Chain Support 566 $ 1,704,957 
Cost Allocation Factors Used -Direct, DCR, MT, MU 920 304,477 
922 (138,840)
923 97,884 
930.2 4,879 
107 1,384,743 
108 38,943 
$ 3,397,043 
(k) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Accounting & Tax Support 560 $ 69,907 
Cost Allocation Factors Used - Direct, CR, HC, MA, MT, MU 561 579 
561.1 27,398 
561.2 76,292 
561.5 7,554 
562 15,222 
566 119,626 
568 414,189 
573 5,655 
911 1,089 
920 410,663 
922 (236,959)
923 2,682,766 
930.2 (39)
107 277,424 
108 587 
$ 3,871,953 
(l) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Treasury Support 920 $ 104,608 
Cost Allocation Factors Used - MA, MU, PE 922 (43,292)
923 52,288 
930.2 1,702 
107 43,292 
$ 158,598 
(m) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Strategy, LT Planning & Business Performance Support 920 $ 142,151 
Cost Allocation Factors Used - Direct, MA, MU 922 (26,468)
923 33,028 
107 26,468 
$ 175,179 
(n) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Risk Support 920 $ 73,511 
Cost Allocation Factors Used - MA, MU 922 (62,582)
923 147,311 
930.2 2,767 
107 62,582 
$ 223,589 
(o) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Internal Auditing Support 920 $ 158,917 
Cost Allocation Factors Used - Direct, MA, MU 922 (66,835)
923 85,212 
930.2 96 
107 66,835 
$ 244,225 
(p) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Legal Support 920 $ 250,523 
Cost Allocation Factors Used - Direct, MA, MT, MU 922 (217,204)
923 521,951 
930.2 40 
107 238,000 
108 804 
$ 794,114 
(q) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Rates & Regulatory Affairs Support 920 $ 89,199 
Cost Allocation Factors Used - Direct, CR, MU 922 (80,428)
923 194,835 
930.2 1,056 
107 80,428 
$ 285,090 
(r) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Corporate Affairs & Community Involvement Support 426.1 $ 6,434 
Cost Allocation Factors Used - MA, MU 920 27,729 
922 (12,803)
923 18,085 
930.2 22,123 
107 12,803 
$ 74,371 
(s) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide External Affairs Support 920 $ 33,388 
Cost Allocation Factors Used - Direct, MA, MU 923 3,320 
107 8,745 
108 343 
$ 45,796 
(t) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Ethics & Compliance Support 920 $ 106,480 
Cost Allocation Factors Used - MA 922 (74,274)
923 155,973 
107 74,274 
$ 262,453 
(u) Concept: AccountsChargedOrCreditedTransactionsWithAssociatedAffiliatedCompanies
Account  Amount
Provide Human Resources & Corporate Services Support 560 $ 74,974 
Cost Allocation Factors Used - Direct, DCR, HC, MA, MT, MU 561 683 
                                                                  561.1 31,564 
561.2 83,584 
561.5 8,859 
562 16,908 
566 114,406 
568 483,880 
573 24,148 
911 1,286 
920 597,694 
922 (473,468)
923 1,292,525 
930.2 1,019 
107 564,215 
108 6,892 
$ 2,829,169 
XBRL Instance File
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