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KY, Distribution, , 69, 12, , 9.38, 1, ,  2021-12-31 C000533 FLEMING - KY, Transmission, , 69, 12, , 20, 1, ,  2021-12-31 C000533 KY Steam Maint O/U 2021-12-31 C000533 JOHNS CREEK - KY, Transmission, , 138, 70.5, 36.2, 54, 1, ,  2021-01-012021-12-31 C000533 REEDY COAL - KY, Distribution, , 69, 34, , 20, 1, ,  2021-01-012021-12-31 C000533 , Sales And Use Tax, KY, 2020 2020-12-31 C000533 Estimated 2021-01-012021-12-31 C000533 Transmission Expenses - Maintenance, AEPSC 2021-01-012021-12-31 C000533 HOWARD COLLINS - KY, Distribution, , 69, 12, , 30.5, 2, ,  2021-01-012021-12-31 C000533 ferc:TransmissionStudiesMember AG2-567, 1426.56 2021-01-012021-12-31 C000533 NERC Compliance and Cybersecurity Costs Kentucky PSC Case No. 2014-00396 2020-12-31 C000533 A(1)e: Generation: Unconventional, 1 item under $50,000 2021-01-012021-12-31 C000533 Deferred Gain: Fiber Optic Agrmts-In Kind SvcAmortize through June 2026 2021-12-31 C000533 COLLIER - KY, Distribution, , 69, 34, , 25, 1, ,  2021-01-012021-12-31 C000533 PJM Trans Owner Serv Rev Whlsle Various Various OLF 2021-01-012021-12-31 C000533 PJM Interconnection LLC - Attachment H-14, ER17-405 2021-01-012021-12-31 C000533 ferc:FederalTaxMember 2020-12-31 C000533 Municipal WaterworksC 2021-01-012021-12-31 C000533 ENGLE - KY, Distribution, , 69, 34.5, , 20, 1, ,  2021-12-31 C000533 TRANSMISSION, , 2021-01-012021-12-31 C000533 STATE UNEMPLOYMENT 2021, Unemployment Tax, WV, 2020-12-31 C000533 , Sales And Use Tax, OH, 2021 2021-01-012021-12-31 C000533 Property Tax, Property Tax, KY, 2018 2021-12-31 C000533 DORTON - KY, Transmission, , 138, 70.5, 46, 144, 2, ,  2021-12-31 C000533 KPCo T Work, 2460181.87ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 AIR HEATER BASKET REPLACEMENT, 1111730.68ferc:ElectricUtilityMember 2021-12-31 C000533 Kentucky AMI Program Filing 2021-01-012021-12-31 C000533 MCKINNEY - KY, Distribution, , 34.5, 12, , 6.67, 1, ,  2021-01-012021-12-31 C000533 State Tax, Income Tax, WV, 2019 2021-01-012021-12-31 C000533 ferc:DistributionPlantMemberferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 ferc:AugustMember 0 2021-01-012021-12-31 C000533 ferc:FederalTaxMemberferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 0ferc:FebruaryMember 2021-01-012021-12-31 C000533 0143 HAZARD, WOOTON, 3, 1.16, 795 KCM ACSR 2021-01-012021-12-31 C000533 KY- DSM Over Recovery 2020-12-31 C000533 A(5): Environment (other than equipment), 1 items under $50,000 2021-01-012021-12-31 C000533 HAZARD - KY, Transmission, , 138, 69, 12, 180, 2, ,  2021-12-31 C000533 Other License and Fees Tax, Other License And Fees Tax, WV, 2019 2020-12-31 C000533 353 - Big Sandy, 603000, 0.0215 2021-01-012021-12-31 C000533 BAKER 765KV - KY, Transmission, , 69, 12, , 2.5, 0, 1,  2021-12-31 C000533 BIG SANDY 138KV - KY, Transmission, , 138, 34.5, , 20, 1, ,  2021-12-31 C000533 HITCHINS - KY, Distribution, , 69, 13.09, , 25, 1, ,  2021-12-31 C000533 Accrued Book Pensionferc:ElectricUtilityMember 2020-12-31 C000533 HAZARD - KY, Transmission, , 161, 138, 13.09, 210, 0, 1,  2021-01-012021-12-31 C000533 CHAVIES - KY, Distribution, , 69, 12, , 3.75, 1, ,  2021-12-31 C000533 390, 27746000, 0.0397 2021-01-012021-12-31 C000533 ferc:LocalTaxMember 2021-12-31 C000533 Other Taxes and Fees, Other Taxes and Fees, KY, 2020 2021-01-012021-12-31 C000533 Estimated 2021-01-012021-12-31 C000533 BULAN - KY, Distribution, , 69, 12, , 9.38, 1, ,  2021-01-012021-12-31 C000533 Big Sandy Retirement Rider Unit 2 O&M Kentucky PSC Case No. 2014-00396 2021-12-31 C000533 REEDY COAL - KY, Distribution, , 69, 34, , 20, 1, ,  2021-12-31 C000533 Administrative and General Expenses - Operation, AEPSC 2021-01-012021-12-31 C000533 Mark-to-Market of Risk Management Contracts 2020-01-012020-12-31 C000533 Deferred Property Tax 2021-12-31 C000533 BEAVER CREEK - KY, Transmission, , 138, 34.5, , 30, 1, ,  2021-01-012021-12-31 C000533 ferc:TransmissionStudiesMember PJM - #AG1-066, 2222.48 2021-01-012021-12-31 C000533 Allowances Usedferc:NitrogenOxideMember 2021-01-012021-12-31 C000533 Other (Specify)ferc:OtherUtilityMember 2020-12-31 C000533 , Sales And Use Tax, WV, 2021ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Emission Allowancesferc:ElectricUtilityMember 2020-12-31 C000533 2020 - Kentucky Power Base Case 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember Other Accounts (Specify, details in footnote): 2021-01-012021-12-31 C000533 INEZ - KY, Transmission, , 138, 69, 13.09, 50, 1, ,  2021-12-31 C000533 SFAS 112 Post Employment Benefit 2020-12-31 C000533 Property Tax, Property Tax, WV, 2021 2021-01-012021-12-31 C000533 State Tax, Income Tax, IL, 2021 2021-12-31 C000533 BONNYMAN - KY, Transmission, , 69, 34.5, , 30, 1, ,  2021-12-31 C000533 Term Loan - KY State Commission Authority: Case No. 2021-00131 2021-01-012021-12-31 C000533 2021-12-31 C000533 KPCo D Work, 1020310.3ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Emission Allowancesferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 VICCO - KY, Distribution, , 138, 34.5, , 30, 1, ,  2021-01-012021-12-31 C000533 INEZ - KY, Transmission, , 138, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 PJM Trans Enhancement Reg Liability 2020-12-31 C000533 Estimated C 2021-01-012021-12-31 C000533 Deferred Revenue 2021-12-31 C000533 Local Tax, Local Tax, KY, 2019 2021-12-31 C000533 0106 DORTON, FLEMING, 3, 0.83, 795 MCMA 2021-01-012021-12-31 C000533 Mitchell- Total 2021-01-012021-12-31 C000533 ferc:UnemploymentTaxMemberferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Real Estate & Workplace Svcs, AEPSC 2021-01-012021-12-31 C000533 D Brett Mattison, President and Chief Operating Officer 2021-01-012021-12-31 C000533 ferc:NitrogenOxideMemberferc:CurrentYearMember 2021-01-012021-12-31 C000533 OLIVE HILL - KY, Distribution, , 69, 12, , 7.5, 1, ,  2021-01-012021-12-31 C000533 Large General Service Time‐of‐Day I 2021-01-012021-12-31 C000533 ferc:FederalTaxMember 2021-12-31 C000533 ferc:NitrogenOxideMemberferc:NextTwelveMonthsMember 2020-12-31 C000533 DISTRIBUTION, , 2021-01-012021-12-31 C000533 Other Accounts (Specify, provide details in footnote): 2021-01-012021-12-31 C000533 BEAVER CREEK - KY, Transmission, , 138, 69, 46, 90, 1, ,  2021-01-012021-12-31 C000533 SECOND FORK - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 ferc:NitrogenOxideMember 2021-12-31 C000533 Distribution Expenses - Maintenance, OPCO 2021-01-012021-12-31 C000533 Ramey Substation (4205)ferc:LandAndRightsMember 2021-01-012021-12-31 C000533 Property Tax, Property Tax, KY, 2018 2020-12-31 C000533 ferc:GasOtherFacilitiesMember Other (provide details in footnote): 2021-01-012021-12-31 C000533 367, 12354000, 0.0352 2021-01-012021-12-31 C000533 401 - Operation Expense - Nonassociated 2021-01-012021-12-31 C000533 Other (Provide details in footnote): 2021-01-012021-12-31 C000533 Other (Specify)ferc:OtherUtilityMember 2021-01-012021-12-31 C000533 State Tax, Income Tax, WV, 2019 2020-12-31 C000533 ferc:SalesAndUseTaxMember 2021-12-31 C000533 Other License and Fees Tax, Other License And Fees Tax, KY, 2019 2021-12-31 C000533 NERC Compliance and Cybersecurity Costs Kentucky PSC Case No. 2014-00396 2021-12-31 C000533 ferc:PayrollTaxMember 2021-01-012021-12-31 C000533 FORDS BRANCH STEPDOWN - KY, Distribution, , 34.5, 12, , 3.75, 1, ,  2021-12-31 C000533 0ferc:OctoberMember 2021-01-012021-12-31 C000533 CEDAR CREEK - KY, Transmission, , 138, 34.5, , 25, 0, 1,  2021-12-31 C000533 MAYKING - KY, Distribution, , 69, 12, , 20, 1, ,  2021-01-012021-12-31 C000533 Urea, APCo 2021-01-012021-12-31 C000533 KPSC - Case No. 2016-00180 2021-01-012021-12-31 C000533 0116 BEAVER CREEK, SPICEWOOD, 1, 25.83, 795 MCMA 2021-01-012021-12-31 C000533 General Service C 2021-01-012021-12-31 C000533 Deferred Rev-Bonus Lease 2021-01-012021-12-31 C000533 State Tax, Income Tax, WV, 2021 2021-12-31 C000533 LESLIE - KY, Transmission, , 69, 34.5, , 30, 1, ,  2021-01-012021-12-31 C000533 Senior Unsecured Notes - 4.12%, Series I 2021-01-012021-12-31 C000533 BELLEFONTE 138KV - KY, Transmission, , 138, 69, 34.5, 308, 2, ,  2021-01-012021-12-31 C000533 HENRY CLAY - KY, Distribution, , 46, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 ROW Capital Widening & Removal, 6726648.01ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 0ferc:MayMember 2021-01-012021-12-31 C000533 Research and Other Services, AEPSC 2021-01-012021-12-31 C000533 Increases (Decreases) Due to Reductions in Par or Stated Value of Capital Stock 2021-01-012021-12-31 C000533 PJM - #AF2-018, 8663.45ferc:TransmissionStudiesMember 2021-01-012021-12-31 C000533 KY Next Generation Radio Sys, 9715779.23ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 ferc:TransmissionStudiesMember AG2-679, 1537.76 2021-01-012021-12-31 C000533 STINNETT - KY, Distribution, , 161, 34, 7.2, 14.93, 1, ,  2021-01-012021-12-31 C000533 PJM - #AD2-107, -5 2021-01-012021-12-31 C000533 ferc:PropertyTaxMember 2020-12-31 C000533 Barging, I&M 2021-01-012021-12-31 C000533 ferc:SulfurDioxideMemberferc:NextTwelveMonthsMember 2021-12-31 C000533 Rockport Capacity Deferral Kentucky PSC Case No. 2017-00179 2020-12-31 C000533 354, 100574000, 0.0261 2021-01-012021-12-31 C000533 Wolverine Power Supply Cooperative, Inc.ferc:NitrogenOxideMemberferc:CurrentYearMember 2021-01-012021-12-31 C000533 Big Sandy Gas 2021-01-012021-12-31 C000533 Steam Power Generation - Maintenance, AEPSC 2021-01-012021-12-31 C000533 TV Pole Attachments 2021-12-31 C000533 , Sales And Use Tax, KY, 2020 2021-01-012021-12-31 C000533 2360104 FICA, Federal Insurance Tax, , 2021-12-31 C000533 ferc:AllocationOfPayrollChargedForClearingAccountsMember 163 - Stores Expense Undistributed 2021-01-012021-12-31 C000533 T/KY/KY Transmisison Work, 2500782.72ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Accrued Book Pension 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember 4% 2021-01-012021-12-31 C000533 DAISY - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 0701 BIG SANDY, KY, SARGENTS, OH, 3, 4.79, 2021-01-012021-12-31 C000533 ferc:StateTaxMemberferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Corporate Money Pool Allocations 2021-01-012021-12-31 C000533 IVG ENERGY, LTD, OS, NOTE 1 2021-01-012021-12-31 C000533 SLEMP - KY, Distribution, , 69, 34.5, , 10.5, 1, ,  2021-01-012021-12-31 C000533 BAKER 765KV - KY, Transmission, , 765, 345, 34.5, 1500, 3, ,  2021-12-31 C000533 KPCo - T BlnktProj Under $3M, 1383041.38 2021-01-012021-12-31 C000533 Cost of Removal-Big Sandy CoalKentucky PSC Case No. 2014-00396 2021-01-012021-12-31 C000533 PJM - #AG1-066, 2222.48 2021-01-012021-12-31 C000533 0ferc:JanuaryMember 2021-01-012021-12-31 C000533 ferc:OtherStateTaxMember 2021-12-31 C000533 2020-01-012020-12-31 C000533 Mark-to-Marketferc:ElectricUtilityMember 2020-12-31 C000533 Other License and Fees Tax, Other License And Fees Tax, WV, 2019 2021-12-31 C000533 2020 - Kentucky Power Base Case 2021-12-31 C000533 0113 CHADWICK, KY ELECTRIC STEEL, 1, 8.09, 795 MCMA 2021-01-012021-12-31 C000533 0131 BAKER, BIG SANDY EXT., 1, 0.05, 2 - 1351KCM ACSR 2021-01-012021-12-31 C000533 M&S - Retiring PlantsKentucky PSC Case No. 2014-00396 2021-01-012021-12-31 C000533 State Tax, Income Tax, MI, 2018 2021-12-31 C000533 COLEMAN - KY, Distribution, , 69, 12, , 3.75, 1, ,  2021-12-31 C000533 2360104 FICA, Federal Insurance Tax, , 2020-12-31 C000533 AG1-066, 2220.32ferc:TransmissionStudiesMember 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMemberferc:PayrollTaxMember 2021-01-012021-12-31 C000533 COMBS - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 State Tax, Income Tax, MI, 2020 2021-01-012021-12-31 C000533 JENKINS - KY, Distribution, , 69, 12, , 10.5, 1, ,  2021-12-31 C000533 397, 22587000, 0.0566 2021-01-012021-12-31 C000533 KY- DSM Over Recovery 2021-12-31 C000533 183 - Prelim Survey 2021-01-012021-12-31 C000533 PJM - #AF1-130 , -362.52 2021-01-012021-12-31 C000533 ferc:TransmissionStudiesMember AG2-685, 1223.5 2021-01-012021-12-31 C000533 Netting of Trading Activities related toUnrealized Gains/Losses on Forward Commitmentsbetween Regulated Assets/Liabilities 2021-01-012021-12-31 C000533 Kentucky Solar Filing 2021-01-012021-12-31 C000533 Corporate Human Resources, AEPSC 2021-01-012021-12-31 C000533 GARRETT (KP) - KY, Transmission, , 46, 12, , 10.5, 1, ,  2021-01-012021-12-31 C000533 , Sales And Use Tax, KY, 2020-12-31 C000533 Property Tax, Property Tax, KY, 2019 2020-12-31 C000533 0110 BEAVER CREEK, KY, BIG SANDY, KY, 1, 0.01, 636KCM ACSR 2021-01-012021-12-31 C000533 Mitchell Catalyst Replacement, 1350365.43 2021-01-012021-12-31 C000533 Transmission Expenses - Operation, AEPSC 2021-01-012021-12-31 C000533 Oil Mitchell- Total 2021-01-012021-12-31 C000533 OSS Margin Sharing Kentucky PSC Case No. 2017-00179 2020-12-31 C000533 STATE UNEMPLOYMENT 2021, Unemployment Tax, KY,ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 TV Pole Attachments 2021-01-012021-12-31 C000533 WHITESBURG - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 BAKER 765KV - KY, Transmission, , 69, 12, , 10.5, 0, 1,  2021-12-31 C000533 State Tax, Income Tax, MI, 2019 2021-01-012021-12-31 C000533 State Tax, Income Tax, WV, 2017 2021-12-31 C000533 Accrued BK ARO Costferc:ElectricUtilityMember 2020-12-31 C000533 State Tax, Income Tax, WV, 2019 2021-12-31 C000533 Property Tax, Property Tax, KY, 2019 2021-01-012021-12-31 C000533 0 2021-01-012021-12-31 C000533 BEAVER CREEK - KY, Transmission, , 138, 0, 0, 0, , , AIR CORE REACTOR 2021-12-31 C000533 LOVELY - KY, Distribution, , 138, 34, , 30, 1, ,  2021-12-31 C000533 ferc:ElectricPollutionControlFacilitiesMember 2021-12-31 C000533 184 - Clearing Accounts 2021-01-012021-12-31 C000533 Franchise Tax, Franchise Tax, KY, 2019 2021-01-012021-12-31 C000533 COALTON - KY, Distribution, , 69, 12, , 25, 1, ,  2021-01-012021-12-31 C000533 Spent AROs - Big Sandy Coal Kentucky PSC Case No. 2014-00396 2021-01-012021-12-31 C000533 State Tax, Income Tax, KY, 2020 2021-12-31 C000533 ML U0 ELG Compliance, 5466871.42ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 SFAS 158 Employers' Accounting for Defined Benefit Pension and Other Postretirement Plans 2021-12-31 C000533 Other Accounts (Specify, details in footnote): 2021-01-012021-12-31 C000533 SFAS 109 Deferred SIT 2020-12-31 C000533 , 2 items under $50,000 2021-01-012021-12-31 C000533 Construction Services, OPCO 2021-01-012021-12-31 C000533 SPRING FORK - KY, Distribution, , 46, 7.2, , 0.83, 1, ,  2021-01-012021-12-31 C000533 0139 MORGAN FORK, BETSY LANE, 3, 0.1, 795 ACSR 2021-01-012021-12-31 C000533 KPCo-D Baseline Work, 6479955.46 2021-01-012021-12-31 C000533 Unrealized Gain on Forward Commitments 2020-12-31 C000533 Other 2021-01-012021-12-31 C000533 Therace M. Risch, Vice President 2021-01-012021-12-31 C000533 T/KP/Transmission Work, 5131464.83ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 NERC Penalties 2021-01-012021-12-31 C000533 311 - Mitchell, 57252000, 0.0258 2021-01-012021-12-31 C000533 T/KY/KY Transmisison Work, 2500782.72 2021-01-012021-12-31 C000533 AG2-567, 1426.56 2021-01-012021-12-31 C000533 STATE UNEMPLOYMENT 2021, Unemployment Tax, WV,ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Other State Tax, Other State Tax, OH, 2020ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 WEEKSBURY - KY, Distribution, , 69, 12, , 6.25, 1, ,  2021-12-31 C000533 ferc:TransmissionStudiesMember PJM - #AD2-107, -5 2021-01-012021-12-31 C000533 Senior Unsecured Notes - 4.12%, Series I 2021-12-31 C000533 Over/Under Recovered Fuel, Net 2020-01-012020-12-31 C000533 State Tax, Income Tax, MI, 2019 2021-12-31 C000533 Other State Tax, Other State Tax, WV, 2021 2020-12-31 C000533 BEAVER CREEK - KY, Transmission, , 138, 70.5, 46, 90, 1, ,  2021-01-012021-12-31 C000533 , Sales And Use Tax, KY, 2021 2021-12-31 C000533 KYPCo Trans Pre Eng Parent, 1592732.93ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 State Tax, Income Tax, MI, 2019 2020-12-31 C000533 State Tax, Income Tax, IL, 2020 2021-12-31 C000533 ferc:LocalTaxMember 2021-01-012021-12-31 C000533 2016 - Kentucky Power Rate Case 2021-12-31 C000533 Customer Advance Receipts 2020-12-31 C000533 Property Tax, Property Tax, WV, 2019 2021-12-31 C000533 PJM INTERCONNECTION, OS, NOTE 1 2021-01-012021-12-31 C000533 HOODS CREEK - KY, Distribution, , 69, 12, , 10.5, 1, ,  2021-12-31 C000533 Deferred Revenue 2021-01-012021-12-31 C000533 Int Exp Capd for Taxferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Local Bank Term Loan, State Commission Authority Case# 2019-00072 2021-12-31 C000533 ferc:ElectricUtilityMember Other 2021-01-012021-12-31 C000533 ferc:SulfurDioxideMember 2020-12-31 C000533 ferc:DirectPayrollDistributionMember 163 - Stores Expense Undistributed 2021-01-012021-12-31 C000533 Unrecovered Plant - Big Sandy Kentucky PSC Case No. 2014-00396 2021-12-31 C000533 Outdoor Lighting C 2021-01-012021-12-31 C000533 314 - Mitchell, 55567000, 0.0167 2021-01-012021-12-31 C000533 Other State Tax, Other State Tax, WV, 2021 2021-01-012021-12-31 C000533 WEST PAINTSVILLE - KY, Distribution, , 69, 12, , 25, 1, ,  2021-12-31 C000533 Other State Tax, Other State Tax, WV, 2020 2021-01-012021-12-31 C000533 SFAS 106 Medicare SubsidyAmortz period: Jan 2013 - Dec 2024 2021-01-012021-12-31 C000533 THELMA - KY, Transmission, , 138, 69, 46, 70, 1, ,  2021-12-31 C000533 KPCo-D Baseline Work, 6479955.46ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 OTHERferc:OtherUtilityMember 2021-01-012021-12-31 C000533 Other Minor Projects Which is under 5% or $1,000,000, 17481049.61 2021-01-012021-12-31 C000533 KENWOOD - KY, Distribution, , 46, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 JACKSON - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 SOUTH SHORE - KY, Distribution, , 69, 13.09, , 7.5, 1, ,  2021-01-012021-12-31 C000533 Federal Tax, Income Tax, , 2020-12-31 C000533 BEAVER CREEK - KY, Transmission, , 138, 0, 0, 0, , , STATCAP 2021-12-31 C000533 ferc:ElectricUtilityMember Deferred Fuel Costs 2021-01-012021-12-31 C000533 Accrued BK ARO Costferc:ElectricUtilityMember 2021-12-31 C000533 ferc:SulfurDioxideMemberferc:TwoYearsMember 2021-12-31 C000533 SFAS 109 Deferred SIT 2021-01-012021-12-31 C000533 Other State Tax, Other State Tax, KY, 2021 2021-01-012021-12-31 C000533 Franchise Tax, Franchise Tax, KY, 2020 2020-12-31 C000533 PJM - AF1-251, -7.12ferc:TransmissionStudiesMember 2021-01-012021-12-31 C000533 State Tax, Income Tax, MI, 2017 2020-12-31 C000533 OSS Margin Sharing Kentucky PSC Case No. 2017-00179 2021-01-012021-12-31 C000533 Asociated Business Development 2021-01-012021-12-31 C000533 Big Sandy 2021-12-31 C000533 RUSSELL - KY, Distribution, , 69, 12, , 22.4, 1, ,  2021-12-31 C000533 PJM - #AF2-328, 1459.41 2021-01-012021-12-31 C000533 ferc:SeptemberMember 0 2021-01-012021-12-31 C000533 KPCo T Work, 2460181.87ferc:ElectricUtilityMember 2021-12-31 C000533 0ferc:JuneMember 2021-01-012021-12-31 C000533 0110 BEAVER CREEK, KY, BIG SANDY, KY, 2, 22.86, 636KCM ACSR 2021-01-012021-12-31 C000533 B.P. ENERGY COMPANY, OS, NOTE 1 2021-01-012021-12-31 C000533 LESLIE - KY, Transmission, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 Franchise Tax, Franchise Tax, KY, 2017 2020-12-31 C000533 0140 BONNYMAN, SOFT SHELL, 1, 19.15, 1590 KCM ACSS 2021-01-012021-12-31 C000533 Allowance 2021-12-31 C000533 Paul Chodak, Vice President 2021-01-012021-12-31 C000533 Netting of Trading Activities related toUnrealized Gains/Losses on Forward Commitmentsbetween Regulated Assets/Liabilities 2021-12-31 C000533 FIRSTENERGY TRADING SERVICES, OS, NOTE 1 2021-01-012021-12-31 C000533 , Sales And Use Tax, KY, 2020 2021-12-31 C000533 KPCo D Work, 1020310.3ferc:ElectricUtilityMember 2021-12-31 C000533 0 2021-01-012021-12-31 C000533 Under-Recovery of PJM True-UpAmortz period: Jan 2022-Dec 2022 2021-12-31 C000533 Other Minor Projects Which is under 5% or $1,000,000, 17481049.61ferc:ElectricUtilityMember 2021-12-31 C000533 DEPRECIABLE SUM, 3018501000, 2021-01-012021-12-31 C000533 BEAVER CREEK - KY, Transmission, , 138, 34.5, , 30, 1, ,  2021-12-31 C000533 188 - Research & Development 2021-01-012021-12-31 C000533 THELMA - KY, Transmission, , 138, 69, 12, 90, 1, ,  2021-01-012021-12-31 C000533 KPCO-D Telecom, 1489479.85 2021-01-012021-12-31 C000533 HAZARD - KY, Transmission, , 69, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 MCKINNEY - KY, Distribution, , 34.5, 12, , 6.67, 1, ,  2021-12-31 C000533 Post In-Service AFUDC Hanging Rock/Jefferson 765 KV LineAmortz period: Dec 1984 - Nov 2032 2021-01-012021-12-31 C000533 Capacity Charge Tariff Kentucky PSC Case No. 2014-00396, TFS 2016-00430 2021-12-31 C000533 B(4): Research Support to Others, 3 items under $50,000 2021-01-012021-12-31 C000533 KPCo T Work, 1280901.21 2021-01-012021-12-31 C000533 0154 Racoon Extension, , 1, 0.2, 1033.5KCM ACSR 2021-01-012021-12-31 C000533 Miscellaneous 2021-12-31 C000533 Outdoor Lighting I 2021-01-012021-12-31 C000533 0122 INEZ, LOVELY, 1, 6.86, 1033.5 VAR 2021-01-012021-12-31 C000533 Agency Fees - Factored A/R 2020-12-31 C000533 Other State Tax, Other State Tax, WV, 2021 2021-12-31 C000533 20211101-5315, 44501, ER17-405 2021-01-012021-12-31 C000533 State Tax, Income Tax, IL, 2021 2020-12-31 C000533 ferc:OtherLicenseAndFeesTaxMember 2020-12-31 C000533 PJM INTERCONNECTION, OS, 2021-01-012021-12-31 C000533 State Tax, Income Tax, KY, 2017 2021-01-012021-12-31 C000533 State Tax, Income Tax, MULTI, 2019 2021-12-31 C000533 FEDS CREEK - KY, Distribution, , 69, 12, , 22.34, 1, ,  2021-01-012021-12-31 C000533 SOUTH PIKEVILLE - KY, Distribution, , 69, 13.09, , 25, 1, ,  2021-12-31 C000533 Long Term Issuances Costs 2020-01-012020-12-31 C000533 0 2021-12-31 C000533 0, 0 2021-12-31 C000533 Acquired Assets 2020-01-012020-12-31 C000533 INDEX - KY, Distribution, , 69, 12, , 9.4, 1, ,  2021-01-012021-12-31 C000533 MAYKING - KY, Distribution, , 69, 12, , 20, 1, ,  2021-12-31 C000533 State Tax, Income Tax, IL, 2016 2020-12-31 C000533 State Tax, Income Tax, IL, 2017 2021-12-31 C000533 INDEX - KY, Distribution, , 69, 12, , 9.4, 1, ,  2021-12-31 C000533 312 - Mitchell SCR, 8255000, 0.125 2021-01-012021-12-31 C000533 General Service I 2021-01-012021-12-31 C000533 CITY OF OLIVE HILL, RQ, KPCO 52 2021-01-012021-12-31 C000533 COLLIER - KY, Distribution, , 69, 34, , 25, 1, ,  2021-12-31 C000533 KPCO-D Telecom, 1489479.85ferc:ElectricUtilityMember 2021-12-31 C000533 WS-CI-KEPCo-G PPB, 4517905.71ferc:ElectricUtilityMember 2021-12-31 C000533 State Commission Fees 2021-12-31 C000533 FORDS BRANCH STEPDOWN - KY, Distribution, , 34.5, 12, , 3.75, 1, ,  2021-01-012021-12-31 C000533 BLUE GRASS - KY, Distribution, , 69, 12, , 10.5, 1, ,  2021-01-012021-12-31 C000533 Local Tax, Local Tax, , 2019 2021-01-012021-12-31 C000533 Amortized thru June 2021 2021-01-012021-12-31 C000533 EAST PRESTONSBURG - KY, Distribution, , 46, 12, , 20, 1, ,  2021-12-31 C000533 336 , b,  7 2021-01-012021-12-31 C000533 ML U0 ELG Compliance, 5466871.42ferc:ElectricUtilityMember 2021-12-31 C000533 163 - Stores Expense Undistributed 2021-01-012021-12-31 C000533 Provision Revenue Refundsferc:ElectricUtilityMember 2020-12-31 C000533 Other State Tax, Other State Tax, OH, 2020 2021-01-012021-12-31 C000533 ferc:PayrollTaxMember 2020-12-31 C000533 323 , b,  185 2021-01-012021-12-31 C000533 PRESTONSBURG - KY, Distribution, , 46, 13.09, , 10, 1, ,  2021-01-012021-12-31 C000533 Millbrook P-SPoint - KPCo CI, 1494533.99 2021-01-012021-12-31 C000533 NERC Penalties 2020-12-31 C000533 , Sales And Use Tax, KY, 2021 2021-01-012021-12-31 C000533 Excise Tax, Excise Tax, , 2020 2021-01-012021-12-31 C000533 315 - Big Sandy, 5624000, 0.0177 2021-01-012021-12-31 C000533 KPCo-D Baseline Work, 6479955.46ferc:ElectricUtilityMember 2021-12-31 C000533 Netting of Trading Activities related toUnrealized Gains/Losses on Forward Commitmentsbetween Regulated Assets/Liabilities 2021-12-31 C000533 Unrecovered C 2021-01-012021-12-31 C000533 BEAVER CREEK - KY, Transmission, , 138, 69, 46, 90, 1, ,  2021-12-31 C000533 FICA 2021, Federal Insurance Tax, ,ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 ferc:SulfurDioxideMemberferc:AfterThreeYearsMember 2021-12-31 C000533 KPSC - Case No. 2020-00174 2021-01-012021-12-31 C000533 Miscellaneous 2021-01-012021-12-31 C000533 Other State Tax, Other State Tax, KY, 2021 2021-12-31 C000533 HIGHLAND (KP) - KY, Distribution, , 69, 13.09, , 25, 1, ,  2021-12-31 C000533 ASHLAND - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 Senior Unsecured Notes - 4.33%, Series B State Commission Authority Case# 2014-00210 2021-01-012021-12-31 C000533 Kentucky PSC Investigation 2021-12-31 C000533 Estimated I 2021-01-012021-12-31 C000533 BIG SANDY 138KV - KY, Transmission, , 138, 69.5, 13.2, 128.8, 1, ,  2021-12-31 C000533 Kentucky Rider R 2021-01-012021-12-31 C000533 SOUTH SHORE - KY, Distribution, , 69, 13.09, , 7.5, 1, ,  2021-12-31 C000533 AG2-678, 968.36ferc:TransmissionStudiesMember 2021-01-012021-12-31 C000533 Othersferc:NonUtilityMember 2021-01-012021-12-31 C000533 Accrued BK ARO Cost 2021-01-012021-12-31 C000533 ferc:TransmissionStudiesMember AF1-162, 9639.34 2021-01-012021-12-31 C000533 IPP - System Upgrade Credits 2021-01-012021-12-31 C000533 Leslie Station Rehab, 2461409.14ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember Capitalized Software - Book 2020-12-31 C000533 , Sales And Use Tax, KY, 2021-01-012021-12-31 C000533 State Tax, Income Tax, KY, 2017 2021-12-31 C000533 AG2-682, 974.72ferc:TransmissionStudiesMember 2021-01-012021-12-31 C000533 Unrecovered R 2021-01-012021-12-31 C000533 0103 HAZARD, KY, BEAVER CREEK, KY, 3, 5.91, 397.5 MCMCU 2021-01-012021-12-31 C000533 Ramey Substation (4205)ferc:LandAndRightsMember 2021-12-31 C000533 ferc:FranchiseTaxMember 2021-01-012021-12-31 C000533 2019 Kentucky Environmental Compliance Plan 2021-01-012021-12-31 C000533 , Sales And Use Tax, OH, 2021 2021-12-31 C000533 Home Energy Assistance Program 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember State Tax, Income Tax, IL, 2021 2021-01-012021-12-31 C000533 Steam Maintenance Levelized Reg LiabilityKY Case No. 2017-00179 2021-01-012021-12-31 C000533 BS1OR Under Recovery Kentucky PSC Case No. 2014-00396 2021-12-31 C000533 State Tax, Income Tax, WV, 2017 2021-01-012021-12-31 C000533 HITCHINS - KY, Distribution, , 69, 13.09, , 25, 1, ,  2021-01-012021-12-31 C000533 Property Tax, Property Tax, WV, 2021ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 BS1OR Under Recovery Kentucky PSC Case No. 2014-00396 2021-01-012021-12-31 C000533 State Tax, Income Tax, WV, 2020 2020-12-31 C000533 ferc:ElectricUtilityMember Property Tax, Property Tax, KY, 2021 2021-01-012021-12-31 C000533 Residential Load Management‐Time‐of‐Day R 2021-01-012021-12-31 C000533 MANSBACH - KY, Distribution, , 69, 4, , 9.38, 1, ,  2021-01-012021-12-31 C000533 Senior Unsecured Notes - 3.13%, Series F 2021-01-012021-12-31 C000533 Administrative and General Expenses - Maintenance, AEPSC 2021-01-012021-12-31 C000533 Materials and Supplies, APCo 2021-01-012021-12-31 C000533 HAZARD - KY, Transmission, , 138, 36.2, , 30, 1, ,  2021-01-012021-12-31 C000533 2020-12-31 C000533 ferc:StateTaxMember 2021-01-012021-12-31 C000533 ferc:OtherUtilityMember 2021-01-012021-12-31 C000533 10%ferc:ElectricUtilityMember 2021-12-31 C000533 State Tax, Income Tax, MI, 2020 2020-12-31 C000533 315 - Mitchell, 26079000, 0.0149 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember Capitalized Software - Book 2021-01-012021-12-31 C000533 Property Tax, Property Tax, WV, 2020 2020-12-31 C000533 20210525-5243, 44341, ER17-405 2021-01-012021-12-31 C000533 Unrealized Gain on Forward Commitments 2021-12-31 C000533 ferc:OperatingUtilityMember 2021-01-012021-12-31 C000533 Materials and Supplies, APCo 2021-01-012021-12-31 C000533 ferc:TransmissionPlantMemberferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Rate Cases Expenses 2021-12-31 C000533 Provision Revenue Refundsferc:ElectricUtilityMember 2021-12-31 C000533 ferc:ElectricPollutionControlFacilitiesMember 2021-01-012021-12-31 C000533 BELLEFONTE 138KV - KY, Transmission, , 138, 35, , 45, 1, ,  2021-01-012021-12-31 C000533 ASHLAND - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 JACKSON - KY, Distribution, , 69, 12, , 14.5, 2, ,  2021-12-31 C000533 HAZARD - KY, Transmission, , 34.5, 12, , 9.38, 1, ,  2021-01-012021-12-31 C000533 0115 CHADWICK, COALTON, 1, 0.98, 795 MCMA 2021-01-012021-12-31 C000533 STATE UNEMPLOYMENT 2021, Unemployment Tax, KY, 2020-12-31 C000533 Depreciation Expense - Hanging Rock/Jefferson 765 KV LineAmortz period: Dec 1984 - Nov 2032 2020-12-31 C000533 Construction Services, APCo 2021-01-012021-12-31 C000533 State Tax, Income Tax, MI, 2021 2021-12-31 C000533 Environmental Services, AEPSC 2021-01-012021-12-31 C000533 KYPCo Distr Pre Eng Parent, 4173910.36ferc:ElectricUtilityMember 2021-12-31 C000533 KPCo T Work, 1862409.48ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Kentucky Rider C 2021-01-012021-12-31 C000533 Senior Unsecured Notes - 8.030%, State Commission Authority Case # 2008-00442 2021-01-012021-12-31 C000533 Distribution Expenses - Maintenance, AEPSC 2021-01-012021-12-31 C000533 State Tax, Income Tax, WV, 2021ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 KPCo T Work, 5318316.62 2021-01-012021-12-31 C000533 0600 HAZARD, KY, PINEVILLE, KY, 3, 0.06, 795 KCM ACSR 2021-01-012021-12-31 C000533 Tax Services, AEPSC 2021-01-012021-12-31 C000533 Ed-Ci-Kepco-D Ast Imp, 2825421.26ferc:ElectricUtilityMember 2021-12-31 C000533 KPCO-D Telecom, 1489479.85ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 DAISY - KY, Distribution, , 69, 12, , 4.7, 1, ,  2021-01-012021-12-31 C000533 PJM Greenhat Default Deferral 2021-12-31 C000533 KY Next Generation Radio Sys, 9715779.23ferc:ElectricUtilityMember 2021-12-31 C000533 ALLEN (KP) - KY, Distribution, , 46, 12, , 6.25, 1, ,  2021-01-012021-12-31 C000533 Post In-Service AFUDC Hanging Rock/Jefferson 765 KV LineAmortz period: Dec 1984 - Nov 2032 2021-12-31 C000533 Use of Jointly Owned Facility, KYTCo 2021-01-012021-12-31 C000533 Notes Payable to Associated Companies - Retired 2020-01-012020-12-31 C000533 ferc:OtherUtilityOrNonutilityMember 0 2021-01-012021-12-31 C000533 Deferred Lease Assets 2021-01-012021-12-31 C000533 BONNYMAN - KY, Transmission, , 138, 70.5, 13, 130, 1, ,  2021-01-012021-12-31 C000533 STATE UNEMPLOYMENT 2021, Unemployment Tax, OH, 2020-12-31 C000533 ferc:OtherElectricUtilityMember 2021-12-31 C000533 Senior Unsecured Notes - 8.130%, State Commission Authority Case # 2008-00442 2021-01-012021-12-31 C000533 Congestion 2021-01-012021-12-31 C000533 Hazard Station Rehab, 3213771.47 2021-01-012021-12-31 C000533 M&S - Retiring PlantsKentucky PSC Case No. 2014-00396 2020-12-31 C000533 , Sales And Use Tax, KY, 2020ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 INEZ - KY, Transmission, , 138, 69, 13.09, 50, 1, ,  2021-01-012021-12-31 C000533 SLEMP - KY, Distribution, , 69, 34.5, , 10.5, 1, ,  2021-12-31 C000533 0ferc:Quarter4Member 2021-01-012021-12-31 C000533 Other Minor Projects Which is under 5% or $1,000,000, 17481049.61ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 DEWEY - KY, Transmission, , 138, 69, 12, 90, 1, ,  2021-12-31 C000533 Other State Tax, Other State Tax, OH, 2020 2021-12-31 C000533 0ferc:MarchMember 2021-01-012021-12-31 C000533 Ed-Ci-Kepco-D Ast Imp, 2825421.26 2021-01-012021-12-31 C000533 Franchise Tax, Franchise Tax, KY, 2020 2021-01-012021-12-31 C000533 State Tax, Income Tax, WV, 2021 2021-01-012021-12-31 C000533 2360105 FICA CARES ACT, Federal Insurance Tax, , 2020-12-31 C000533 HADDIX - KY, Distribution, , 69, 34.5, , 25, 1, ,  2021-01-012021-12-31 C000533 COLEMAN - KY, Distribution, , 69, 34.5, , 20, 1, ,  2021-01-012021-12-31 C000533 Other State Tax, Other State Tax, WV, 2020 2020-12-31 C000533 0107 LOGAN, WV, SPRIGG, KY, 3, 0.48, 397 MCMA 2021-01-012021-12-31 C000533 Residential Service R 2021-01-012021-12-31 C000533 ferc:ThreeYearsMemberferc:NitrogenOxideMember 2020-12-31 C000533 PJM - Trans Owner OS 2021-01-012021-12-31 C000533 0137 HAYS BRANCH, MORGAN FORK, 3, 8.3, 795 ACSR 2021-01-012021-12-31 C000533 Under-Recovery of PJM True-UpAmortz period: Jan 2022-Dec 2022 2021-01-012021-12-31 C000533 INEZ - KY, Transmission, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 CCS FEED Study Costs Kentucky PSC Case No. 2014-00396 2021-12-31 C000533 Central Machine Shop, APCo 2021-01-012021-12-31 C000533 2019-12-31 C000533 2020 KY Storm Deferral 2020-12-31 C000533 BURDINE - KY, Distribution, , 46, 12, , 7.5, 1, ,  2021-01-012021-12-31 C000533 T/KY/KY Transmisison Work, 2500782.72ferc:ElectricUtilityMember 2021-12-31 C000533 State Tax, Income Tax, CA, 2021 2020-12-31 C000533 HAZARD - KY, Transmission, , 138, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 TOPMOST - KY, Distribution, , 138, 13.09, , 20, 1, ,  2021-01-012021-12-31 C000533 Urea, APCo 2021-01-012021-12-31 C000533 SFAS 106 Medicare SubsidyAmortz period: Jan 2013 - Dec 2024 2021-12-31 C000533 Excise Tax, Excise Tax, , 2020 2021-12-31 C000533 371, 19245000, 0.0352 2021-01-012021-12-31 C000533 0110 BEAVER CREEK, KY, BIG SANDY, KY, 3, 30.88, 636KCM ACSR 2021-01-012021-12-31 C000533 Big Sandy Recovery Over/Under Kentucky PSC Case No. 2014-00396 2020-12-31 C000533 BONNYMAN - KY, Transmission, , 69, 34.5, , 30, 1, ,  2021-01-012021-12-31 C000533 311 - Big Sandy, 23733000, 0.0306 2021-01-012021-12-31 C000533 Leslie Station Rehab, 2461409.14ferc:ElectricUtilityMember 2021-12-31 C000533 Deferred Rev-Bonus Lease 2020-12-31 C000533 ABD - Deferred Revenues 2021-01-012021-12-31 C000533 Coal Mitchell- Total 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 ferc:SulfurDioxideMember 2021-12-31 C000533 396, 6000, 0.0543 2021-01-012021-12-31 C000533 Unamortized Credit Line Fees 2021-12-31 C000533 ferc:NitrogenOxideMember 2020-12-31 C000533 THELMA - KY, Transmission, , 46, 0, 0, 0, , , STATCAP 2021-12-31 C000533 State Tax, Income Tax, MI, 2018 2020-12-31 C000533 State Tax, Income Tax, KY, 2018 2021-01-012021-12-31 C000533 ALLEN (KP) - KY, Distribution, , 46, 0, 0, 0, , , STATCAP 2021-12-31 C000533 transmission line, Total shown in Column j - p, , , 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember KPCo T Work, 1280901.21 2021-01-012021-12-31 C000533 2360105 FICA CARES ACT, Federal Insurance Tax, , 2021-01-012021-12-31 C000533 ferc:SulfurDioxideMemberferc:CurrentYearMember 2020-12-31 C000533 Kentucky Rider I 2021-01-012021-12-31 C000533 Outdoor Lighting 2021-01-012021-12-31 C000533 Mitchell-KEPCo Share Oil 2021-01-012021-12-31 C000533 7% 2021-01-012021-12-31 C000533 COMBS - KY, Distribution, , 69, 12, , 7.5, 1, ,  2021-01-012021-12-31 C000533 HAZARD - KY, Transmission, , 138, 0, 0, 0, , , STATCAP 2021-12-31 C000533 Emission Allowances 2021-01-012021-12-31 C000533 BELLEFONTE 138KV - KY, Transmission, , 138, 13.09, , 22.4, 1, ,  2021-12-31 C000533 Rate Cases Expenses 2021-01-012021-12-31 C000533 Meter Corrections 2021-01-012021-12-31 C000533 Miscellaneous Items 2020-12-31 C000533 0700 BIG SANDY, KY, AMOS WV, 3, 0.13, 954 MCMA 2021-01-012021-12-31 C000533 Unamortized Credit Line Fees 2021-01-012021-12-31 C000533 INEZ - KY, Transmission, , 138, 0, 0, 0, , , STATCAP 2021-12-31 C000533 0133 CHADWICK EXTENSION, , , 0, 2021-01-012021-12-31 C000533 Franchise Tax, Franchise Tax, KY, 2017 2021-01-012021-12-31 C000533 ferc:FederalTaxMember 2021-01-012021-12-31 C000533 Inadvertent 2021-01-012021-12-31 C000533 Large General Service C 2021-01-012021-12-31 C000533 PJM Network Integ Rev - Affil Various Various FNO 2021-01-012021-12-31 C000533 Miscellaneous 2021-01-012021-12-31 C000533 State Tax, Income Tax, IL, 2017 2020-12-31 C000533 0126 INEZ, MARTIKI, 1, 0.33, 1033.5 VAR 2021-01-012021-12-31 C000533 HIGHLAND (KP) - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 OLIVE HILL - KY, Distribution, , 69, 4, , 5, 1, ,  2021-01-012021-12-31 C000533 OHIO POWER COMPANY (AUCTION), OS, NOTE 1 2021-01-012021-12-31 C000533 PJM Network Integ Trans Rev Whlsle  Various Various FNO 2021-01-012021-12-31 C000533 10% 2021-01-012021-12-31 C000533 LESLIE - KY, Transmission, , 161, 69, 12, 90, 1, ,  2021-12-31 C000533 Rate Cases Expenses 2020-12-31 C000533 KPCo T Work, 5318316.62ferc:ElectricUtilityMember 2021-12-31 C000533 ferc:UnemploymentTaxMember 2021-01-012021-12-31 C000533 ferc:NitrogenOxideMemberferc:CurrentYearMember 2021-12-31 C000533 373, 4669000, 0.0352 2021-01-012021-12-31 C000533 Term Loan - KY State Commission Authority: Case No. 2021-00131 2021-12-31 C000533 0701 BIG SANDY, KY, SARGENTS, OH, 3, 24.2, 954 MCMA 2021-01-012021-12-31 C000533 219 , b,  21 2021-01-012021-12-31 C000533 Trnsrce OU Acctg for Def Asset 2021-12-31 C000533 BLUE GRASS - KY, Distribution, , 69, 12, , 10.5, 1, ,  2021-12-31 C000533 ferc:SulfurDioxideMember Consent Decree Surrendersferc:NextTwelveMonthsMember 2021-01-012021-12-31 C000533 State Tax, Income Tax, IL, 2021 2021-01-012021-12-31 C000533 CCS FEED Study Costs Kentucky PSC Case No. 2014-00396 2021-01-012021-12-31 C000533 GRAYSON - KY, Distribution, , 69, 12, , 20, 1, ,  2021-01-012021-12-31 C000533 FORTY SEVENTH STREET - KY, Distribution, , 69, 13.09, , 12, 1, ,  2021-01-012021-12-31 C000533 Excise Tax, Excise Tax, , 2021ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 BEEFHIDE - KY, Distribution, , 138, 34.5, , 20, 1, ,  2021-01-012021-12-31 C000533 Transmission Losses 2021-01-012021-12-31 C000533 JOHNS CREEK - KY, Transmission, , 138, 0, 0, 0, , , STATCAP 2021-12-31 C000533 UNEMPLOYMENT 2021, Unemployment Tax, , 2020-12-31 C000533 , Sales And Use Tax, KY,ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 HAZARD - KY, Transmission, , 161, 138, 13.09, 210, 0, 1,  2021-12-31 C000533 BELLEFONTE 69KV - KY, Transmission, , 69, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 DEWEY - KY, Transmission, , 138, 34.5, , 25, 1, ,  2021-01-012021-12-31 C000533 ferc:SulfurDioxideMemberferc:ThreeYearsMember 2021-12-31 C000533 Senior Unsecured Notes - 4.180%, Series A State Commission Authority Case# 2014-00210 2021-01-012021-12-31 C000533 Big Sandy Retirement Rider Unit 2 O&M Kentucky PSC Case No. 2014-00396 2021-01-012021-12-31 C000533 State Tax, Income Tax, MI, 2021 2020-12-31 C000533 State Tax, Income Tax, IL, 2016 2021-12-31 C000533 Property Tax, Property Tax, WV, 2020 2021-12-31 C000533 398, 2087000, 0.0673 2021-01-012021-12-31 C000533 AG1-066, 2220.32 2021-01-012021-12-31 C000533 PRESTONSBURG - KY, Distribution, , 46, 0, 0, 0, , , STATCAP 2021-12-31 C000533 TOTAL GENERAL , 63338000, 2021-01-012021-12-31 C000533 Other State Tax, Other State Tax, KY, 2020 2021-12-31 C000533 ferc:GeneralPlantMemberferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Morehead Station Rehab, 1920968.72ferc:ElectricUtilityMember 2021-12-31 C000533 State Tax, Income Tax, CA, 2020 2021-12-31 C000533 391, 2639000, 0.032 2021-01-012021-12-31 C000533 AIR HEATER BASKET REPLACEMENT, 1111730.68 2021-01-012021-12-31 C000533 ABD - Deferred Revenues 2021-12-31 C000533 Notes Payable to Associated Companies - Retired 2021-01-012021-12-31 C000533 Rockport Capacity Deferral Kentucky PSC Case No. 2017-00179 2021-01-012021-12-31 C000533 BEAVER CREEK - KY, Transmission, , 138, 70.5, 46, 90, 1, ,  2021-12-31 C000533 BARRENSHE - KY, Distribution, , 69, 12, , 25, 1, ,  2021-12-31 C000533 Legal GC/Administration, AEPSC 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember NOL State Deferred Tax Asset 2021-12-31 C000533 Long Term Issuances Costs 2021-01-012021-12-31 C000533 ROW Capital Widening & Removal, 6726648.01 2021-01-012021-12-31 C000533 Deferred Lease Assets 2020-12-31 C000533 Other (provide details in footnote): 2021-01-012021-12-31 C000533 RUSSELL FORK - KY, Distribution, , 69, 12, , 3.75, 1, ,  2021-12-31 C000533 Kentucky Reliability 2021-01-012021-12-31 C000533 BIG SANDY 138KV - KY, Transmission, , 138, 13.09, , 20, 1, ,  2021-01-012021-12-31 C000533 KYPCo Trans Pre Eng Parent, 1592732.93ferc:ElectricUtilityMember 2021-12-31 C000533 Local Bank Term Loan, State Commission Authority Case# 2014-00210 2021-01-012021-12-31 C000533 AEP Service Corporation Billings 2021-01-012021-12-31 C000533 OSS Margin Sharing Kentucky PSC Case No. 2017-00179 2021-12-31 C000533 ferc:TransmissionStudiesMember PJM - AF1-256, -22.93 2021-01-012021-12-31 C000533 KY Steam Maint O/U 2021-01-012021-12-31 C000533 Unrecovered 2021-01-012021-12-31 C000533 Other Debit or Cr. Items (Describe, details in footnote): 2021-01-012021-12-31 C000533 PJM - #AF2-328, -243.14 2021-01-012021-12-31 C000533 ferc:PropertyTaxMember 2021-12-31 C000533 Residential Service Time‐of‐Day R 2021-01-012021-12-31 C000533 GRAHN - KY, Distribution, , 69, 12, , 3.13, 1, ,  2021-12-31 C000533 Increases (Decreases) from Sales of Donations Received from Stockholders 2021-01-012021-12-31 C000533 BEAVER CREEK - KY, Transmission, , 138, 0, 0, 0, , , REACTOR 2021-01-012021-12-31 C000533 HAZARD - KY, Transmission, , 138, 36.2, , 30, 1, ,  2021-12-31 C000533 WHITESBURG - KY, Distribution, , 69, 12, , 35.5, 2, ,  2021-01-012021-12-31 C000533 ferc:OperatingUtilityMember 2021-12-31 C000533 3% 2021-01-012021-12-31 C000533 STINNETT - KY, Distribution, , 161, 34.5, 7.2, 22.4, 0, 1,  2021-01-012021-12-31 C000533 A(1)b: Generation: Fossil-Fuel Steam, Generation Asset Management 2021-01-012021-12-31 C000533 State Tax, Income Tax, IL, 2018 2021-12-31 C000533 Estimated Barging Bills 2021-01-012021-12-31 C000533 PJM - Enhancements OS 2021-01-012021-12-31 C000533 Other (Provide details in footnote): 2020-01-012020-12-31 C000533 ferc:ElectricPollutionControlFacilitiesMember 2020-12-31 C000533 TOTAL TRANSMISSION, 731461000, 2021-01-012021-12-31 C000533 ROW Capital Widening & Removal, 6726648.01ferc:ElectricUtilityMember 2021-12-31 C000533 PJM Point to Point Trans Service Various Various LFP 2021-01-012021-12-31 C000533 SOUTH PIKEVILLE - KY, Distribution, , 69, 13.09, , 25, 1, ,  2021-01-012021-12-31 C000533 Unrealized Loss on Forward Commitments 2021-12-31 C000533 310-311, k,  1 2021-01-012021-12-31 C000533 0119 BETSY LAYNE, ALLEN, 1, 0.33, 1033.5KCM ACSR 2021-01-012021-12-31 C000533 Kentucky Rider 2021-01-012021-12-31 C000533 Franchise Tax, Franchise Tax, KY, 2018 2021-01-012021-12-31 C000533 ferc:SulfurDioxideMemberferc:ThreeYearsMember 2020-12-31 C000533 362, 137579000, 0.0352 2021-01-012021-12-31 C000533 ELWOOD (KP) - KY, Distribution, , 46, 34.5, 6.5, 25, 1, ,  2021-01-012021-12-31 C000533 Post In-Service AFUDC Hanging Rock/Jefferson 765 KV LineAmortz period: Dec 1984 - Nov 2032 2020-12-31 C000533 KEYSER - KY, Distribution, , 69, 12, , 20, 1, ,  2021-01-012021-12-31 C000533 Charles R. Patton 2021-01-012021-12-31 C000533 Amortization of Regulatory Debits and Credits (Net) 2021-01-012021-12-31 C000533 Property Tax, Property Tax, KY, 2020ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 ferc:SulfurDioxideMemberferc:NextTwelveMonthsMember 2021-01-012021-12-31 C000533 State Tax, Income Tax, KY, 2018 2020-12-31 C000533 352 - Mitchell, 72000, 0.0208 2021-01-012021-12-31 C000533 SOFT SHELL - KY, Distribution, , 138, 34.5, , 30, 1, ,  2021-01-012021-12-31 C000533 BEEFHIDE - KY, Distribution, , 138, 34.5, , 20, 1, ,  2021-12-31 C000533 BELHAVEN - KY, Distribution, , 138, 13.09, , 20, 1, ,  2021-12-31 C000533 Senior Unsecured Notes - 4.33%, Series B State Commission Authority Case# 2014-00210 2021-12-31 C000533 Senior Unsecured Notes - 4.180%, Series A State Commission Authority Case# 2014-00210 2021-12-31 C000533 Kentucky Reliability 2020-12-31 C000533 SLEMP - KY, Distribution, , 69, 34, , 20, 1, ,  2021-01-012021-12-31 C000533 0ferc:Quarter1Member 2021-01-012021-12-31 C000533 ferc:ElectricPlantInServiceMemberferc:ElectricUtilityMember 2020-12-31 C000533 ferc:ThreeYearsMemberferc:NitrogenOxideMember 2021-12-31 C000533 Senior Unsecured Notes - 3.35%, Series G 2021-01-012021-12-31 C000533 B: Electric R&D External, 7 items under $50,000 2021-01-012021-12-31 C000533 Customer Advance Receipts 2021-12-31 C000533 SHAMROCK - KY, Distribution, , 69, 34.5, , 10.5, 1, ,  2021-12-31 C000533 Othersferc:NonUtilityMember 2020-12-31 C000533 Millbrook P-SPoint - KPCo CI, 1494533.99ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 0154 Raccoon Extension, , 1, 2021-01-012021-12-31 C000533 A(3): Distribution, 1 items under $50,000 2021-01-012021-12-31 C000533 FICA 2021, Federal Insurance Tax, , 2020-12-31 C000533 Mitchell-KEPCo Share 2021-12-31 C000533 State Tax, Income Tax, KY, 2015 2021-12-31 C000533 , Sales And Use Tax, WV, 2021 2020-12-31 C000533 State Tax, Income Tax, IL, 2020 2021-01-012021-12-31 C000533 ROCKPORT PURCHASE POWER, OS, 2021-01-012021-12-31 C000533 0702 BIG SANDY, KY, BROADFORD, VA, 3, 58.26, 2021-01-012021-12-31 C000533 184 - Clearing Accountsferc:AllocationOfPayrollChargedForClearingAccountsMember 2021-01-012021-12-31 C000533 20211221-5274, 44551, ER17-405 2021-01-012021-12-31 C000533 Outdoor Lighting R 2021-01-012021-12-31 C000533 PJM Trans Owner Serv - Affil Various Various OLF 2021-01-012021-12-31 C000533 362.16, 2698000, 0.0352 2021-01-012021-12-31 C000533 DEWEY - KY, Transmission, , 69, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember Other 2021-12-31 C000533 WHITESBURG - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 STATE UNEMPLOYMENT 2021, Unemployment Tax, KY, 2021-12-31 C000533 Customer deposits 2021-01-012021-12-31 C000533 ferc:ExciseTaxMember 2020-12-31 C000533 Deferred Depreciation - Environmental Kentucky PSC Case No. 2014-00396 2020-12-31 C000533 CITY OF VANCEBURG, RQ, KPCO 51 2021-01-012021-12-31 C000533 0103 HAZARD, KY, BEAVER CREEK, KY, 3, 23.25, 2021-01-012021-12-31 C000533 ferc:SulfurDioxideMember Consent Decree Surrenders 2021-01-012021-12-31 C000533 0143 HAZARD, WOOTON, 3, 0.26, 795 KCM ACSR 2021-01-012021-12-31 C000533 BAKER 765KV - KY, Transmission, , 69, 4, , 3, 0, 1,  2021-01-012021-12-31 C000533 366, 8086000, 0.0352 2021-01-012021-12-31 C000533 HAZARD - KY, Transmission, , 161, 70.5, 13.09, 1842, 9, ,  2021-12-31 C000533 Other Taxes and Fees, Other Taxes and Fees, KY, 2021 2021-01-012021-12-31 C000533 SILOAM - KY, Distribution, , 69, 12, , 4.68, 1, ,  2021-01-012021-12-31 C000533 Property Tax, Property Tax, WV, 2021 2020-12-31 C000533 RUSSELL FORK - KY, Distribution, , 69, 12, , 3.75, 1, ,  2021-01-012021-12-31 C000533 Under-Recovery of PJM True-UpAmortz period: Jan 2021-Dec 2021 2021-01-012021-12-31 C000533 ferc:StateTaxMember 2021-12-31 C000533 CEDAR CREEK - KY, Transmission, , 138, 34.5, , 25, 0, 1,  2021-01-012021-12-31 C000533 KPCo T Work, 1862409.48ferc:ElectricUtilityMember 2021-12-31 C000533 0142 STANVILLE EXTENSION, , 1, 0.42, 1033.5KCM ACSR 2021-01-012021-12-31 C000533 BELFRY - KY, Distribution, , 46, 12, , 10.5, 1, ,  2021-01-012021-12-31 C000533 BAKER 765KV - KY, Transmission, , 69, 12, , 10.5, 0, 1,  2021-01-012021-12-31 C000533 HAYWARD - KY, Distribution, , 69, 13.09, , 9.38, 1, ,  2021-12-31 C000533 GRAYS BRANCH - KY, Distribution, , 69, 12, , 5, 1, ,  2021-01-012021-12-31 C000533 HAZARD - KY, Transmission, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 Senior Unsecured Notes - 3.35%, Series G 2021-12-31 C000533 Miscellaneous Items 2021-12-31 C000533 0110 BEAVER CREEK, KY, BIG SANDY, KY, 2, 3.31, 795KCM ACSR 2021-01-012021-12-31 C000533 Intercompany Allocations 2021-01-012021-12-31 C000533 CHADWICK - KY, Transmission, , 138, 69, 34.5, 200, 1, ,  2021-01-012021-12-31 C000533 DEWEY - KY, Transmission, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 Corporate and Fiscal 2021-01-012021-12-31 C000533 IPP - System Upgrade Credits 2020-12-31 C000533 KPCo T Work, 1862409.48 2021-01-012021-12-31 C000533 Other State Tax, Other State Tax, WV, 2020ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 PJM Power Factor Credits Rev Whlsle Various Various OS 2021-01-012021-12-31 C000533 Deferred Revenue  Fiber Optic Lines-Sold-Defd   Rev  Amortize through January 2025 2020-12-31 C000533 LOVELY - KY, Distribution, , 138, 34, , 30, 1, ,  2021-01-012021-12-31 C000533 Adj to Retained Earnings 2021-01-012021-12-31 C000533 GARRETT (KP) - KY, Transmission, , 46, 12, , 10.5, 1, ,  2021-12-31 C000533 Accrued BK ARO Costferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 ferc:LocalTaxMember 2020-12-31 C000533 MANSBACH - KY, Distribution, , 69, 4, , 9.38, 1, ,  2021-12-31 C000533 10%ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Excise Tax, Excise Tax, , 2021 2021-12-31 C000533 COLLIER - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 0105 CLINCH RIVER, VA, BEAVER CREEK, KY, 3, 2.3, 636 MCMA 2021-01-012021-12-31 C000533 ferc:JulyMember 0 2021-01-012021-12-31 C000533 Kentucky Reliability 2021-12-31 C000533 AF1-130, 11598.64 2021-01-012021-12-31 C000533 Steam Maintenance Levelized Reg LiabilityKY Case No. 2017-00179 2020-12-31 C000533 General Service R 2021-01-012021-12-31 C000533 ferc:NitrogenOxideMemberferc:NextTwelveMonthsMember 2021-01-012021-12-31 C000533 SOFT SHELL - KY, Distribution, , 138, 34.5, , 30, 1, ,  2021-12-31 C000533 TOTAL COAL/LIGNITE, 1214541000, 2021-01-012021-12-31 C000533 Hazard Station Rehab, 3213771.47ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 DRAFFIN - KY, Distribution, , 46, 12, , 10.5, 1, ,  2021-01-012021-12-31 C000533 Proceed on Capital leaseback 2020-01-012020-12-31 C000533 HOODS CREEK - KY, Distribution, , 69, 12, , 10.5, 1, ,  2021-01-012021-12-31 C000533 Reg Asset - SFAS 112ferc:ElectricUtilityMember 2021-12-31 C000533 PJM - #AD2-106, -12.38 2021-01-012021-12-31 C000533 Mitchell-KEPCo Share Coal 2021-01-012021-12-31 C000533 Minor Items < $25,000 2021-01-012021-12-31 C000533 SIDNEY - KY, Distribution, , 69, 12, , 20, 1, ,  2021-01-012021-12-31 C000533 2020 KY Storm Deferral 2021-12-31 C000533 Netting of Trading Activities related toUnrealized Gains/Losses on Forward Commitmentsbetween Regulated Assets/Liabilities 2020-12-31 C000533 State Tax, Income Tax, IL, 2019 2021-01-012021-12-31 C000533 HAZARD - KY, Transmission, , 161, 138, 13.09, 3684, 18, ,  2021-01-012021-12-31 C000533 BUSSEYVILLE - KY, Distribution, , 138, 34.5, , 55, 2, ,  2021-01-012021-12-31 C000533 OLIVE HILL - KY, Distribution, , 69, 4, , 5, 1, ,  2021-12-31 C000533 ferc:ExciseTaxMember 2021-12-31 C000533 Other License and Fees Tax, Other License And Fees Tax, KY, 2019 2021-01-012021-12-31 C000533 Capacity Credits 2021-01-012021-12-31 C000533 7%ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 AG2-685, 1223.5 2021-01-012021-12-31 C000533 Leslie Station Rehab, 2461409.14 2021-01-012021-12-31 C000533 KYPCo Distr Pre Eng Parent, 4173910.36 2021-01-012021-12-31 C000533 (Increase) Decrease in Other Special Deposits 2020-01-012020-12-31 C000533 PJM - #AF1-162, -223.89 2021-01-012021-12-31 C000533 State Tax, Income Tax, MI, 2020 2021-12-31 C000533 Other State Tax, Other State Tax, OH, 2021 2021-01-012021-12-31 C000533 ferc:NitrogenOxideMemberferc:TwoYearsMember 2020-12-31 C000533 0127 BIG SANDY, INEZ, 3, 25.08, 795 MCMA 2021-01-012021-12-31 C000533 ferc:ElectricPlantInServiceMemberferc:ElectricUtilityMember Other Accounts (Specify, details in footnote): 2021-01-012021-12-31 C000533 State Tax, Income Tax, MULTI, 2019 2020-12-31 C000533 COMBS - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 Other (provide details in footnote):ferc:ElectricOtherFacilitiesMember 2021-01-012021-12-31 C000533 BECKHAM - KY, Distribution, , 138, 0, 0, 0, , , STATCAP 2021-12-31 C000533 ferc:AprilMember 0 2021-01-012021-12-31 C000533 LESLIE - KY, Transmission, , 69, 34.5, , 30, 1, ,  2021-12-31 C000533 PJM - #AF2-328, -243.14ferc:TransmissionStudiesMember 2021-01-012021-12-31 C000533 Other License and Fees Tax, Other License And Fees Tax, KY, 2020 2021-01-012021-12-31 C000533 State Tax, Income Tax, CA, 2021 2021-01-012021-12-31 C000533 State Tax, Income Tax, KY, 2015 2020-12-31 C000533 Home Energy Assistance Program 2020-12-31 C000533 TOM WATKINS - KY, Distribution, , 69, 12, , 10.5, 1, ,  2021-01-012021-12-31 C000533 WORTHINGTON - KY, Distribution, , 69, 12, , 1.5, 1, ,  2021-12-31 C000533 Over Recovered Fuel Cost 2020-12-31 C000533 Mark-to-Marketferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 Materials and Supplies, OPCo 2021-01-012021-12-31 C000533 State Tax, Income Tax, KY, 2018 2021-12-31 C000533 ferc:OtherStateTaxMember 2021-01-012021-12-31 C000533 Contract Service – Interruptible Power I 2021-01-012021-12-31 C000533 Cost of Removal-Big Sandy CoalKentucky PSC Case No. 2014-00396 2021-12-31 C000533 ferc:GenerationStudiesMember Spicewood Solar Feasability 2021-01-012021-12-31 C000533 393, 301000, 0.0415 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember NOL State Deferred Tax Asset 2021-01-012021-12-31 C000533 JACKSON - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 NGUCS Weddington & Leatherwood, 1047839.55 2021-01-012021-12-31 C000533 Other State Tax, Other State Tax, OH, 2020 2020-12-31 C000533 Cost of Removal-Big Sandy CoalKentucky PSC Case No. 2014-00396 2020-12-31 C000533 STATE UNEMPLOYMENT 2021, Unemployment Tax, VA, 2020-12-31 C000533 State Tax, Income Tax, KY, 2021 2020-12-31 C000533 Mitchell Catalyst Replacement, 1350365.43ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 SILOAM - KY, Distribution, , 69, 12, , 4.68, 1, ,  2021-12-31 C000533 Senior Unsecured Notes - 3.45%, Series H 2021-12-31 C000533 ferc:NitrogenOxideMemberferc:TwoYearsMember 2021-12-31 C000533 0138 SOFT SHELL, BEAVER CREEK, 3, 1.4, 1590 ACSR 2021-01-012021-12-31 C000533 ferc:TransmissionStudiesMember PJM AC1-101 & 102, 5848.88 2021-01-012021-12-31 C000533 Int Exp Capd for Taxferc:ElectricUtilityMember 2020-12-31 C000533 BELHAVEN - KY, Distribution, , 138, 13.09, , 20, 1, ,  2021-01-012021-12-31 C000533 Fuel & Storeroom Services, AEPSC 2021-01-012021-12-31 C000533 ferc:SulfurDioxideMemberferc:AfterThreeYearsMember 2021-01-012021-12-31 C000533 321 , b,  93 2021-01-012021-12-31 C000533 HAZARD - KY, Transmission, , 34.5, 12, , 9.38, 1, ,  2021-12-31 C000533 Deferred Revenue  Fiber Optic Lines-Sold-Defd   Rev  Amortize through January 2025 2021-12-31 C000533 AG2-184, 1716.47 2021-01-012021-12-31 C000533 Other State Tax, Other State Tax, OH, 2021 2020-12-31 C000533 Over Recovered Fuel Cost 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember , Sales And Use Tax, KY, 2021 2021-01-012021-12-31 C000533 State Tax, Income Tax, IL, 2019 2020-12-31 C000533 0101 BIG SANDY, KY, W HUNTINGTON, WV, 3, 0.33, 1033.5 KCM ACSR 2021-01-012021-12-31 C000533 Construction Services, I&M 2021-01-012021-12-31 C000533 Unrecovered Plant - Big Sandy Kentucky PSC Case No. 2014-00396 2021-01-012021-12-31 C000533 Unrecovered Fuel Cost 2021-01-012021-12-31 C000533 Customer deposits 2020-01-012020-12-31 C000533 STATE UNEMPLOYMENT 2021, Unemployment Tax, KY, 2021-01-012021-12-31 C000533 Miscellaneous 2020-12-31 C000533 Mark-to-Market 2021-01-012021-12-31 C000533 PJM INTERCONNECTION, RQ, VARIOUS 2021-01-012021-12-31 C000533 State Tax, Income Tax, WV, 2020 2021-12-31 C000533 392, 15000, 0.0352 2021-01-012021-12-31 C000533 ASHLAND - KY, Distribution, , 69, 12, , 22.4, 1, ,  2021-12-31 C000533 KY Under-recovered PPA Rider 2021-12-31 C000533 KY- DSM Over Recovery 2021-01-012021-12-31 C000533 JOHNS CREEK - KY, Transmission, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 ferc:TransmissionStudiesMember AG2-184, 1716.47 2021-01-012021-12-31 C000533 Kentucky PSC Investigation 2021-01-012021-12-31 C000533 HATFIELD (KP) - KY, Transmission, , 138, 69, 46, 60, 1, ,  2021-12-31 C000533 FORDS BRANCH - KY, Distribution, , 46, 34.5, 12, 30, 1, ,  2021-12-31 C000533 KENWOOD - KY, Distribution, , 46, 12, , 20, 1, ,  2021-12-31 C000533 184 - Clearing Accountsferc:DirectPayrollDistributionMember 2021-01-012021-12-31 C000533 Urea, WPCo 2021-01-012021-12-31 C000533 NEW CAMP - KY, Distribution, , 69, 12, , 20, 1, ,  2021-12-31 C000533 State Tax, Income Tax, KY, 2021ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 FISHTRAP - KY, Distribution, , 69, 12, , 3.75, 1, ,  2021-01-012021-12-31 C000533 , Sales And Use Tax, WV, 2020 2021-12-31 C000533 Capitalized Software - Book 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember KPCo - T BlnktProj Under $3M, 1383041.38 2021-12-31 C000533 Deferred Depreciation - Environmental Kentucky PSC Case No. 2014-00396 2021-01-012021-12-31 C000533 TOPMOST - KY, Distribution, , 138, 13.09, , 20, 1, ,  2021-12-31 C000533 AIR HEATER BASKET REPLACEMENT, 1111730.68ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 PJM - #AD2-105, -13 2021-01-012021-12-31 C000533 Mitchell Catalyst Replacement, 1350365.43ferc:ElectricUtilityMember 2021-12-31 C000533 LESLIE - KY, Transmission, , 161, 69, 12, 90, 1, ,  2021-01-012021-12-31 C000533 Other State Tax, Other State Tax, KY, 2020 2020-12-31 C000533 0139 MORGAN FORK, BEAVER CREEK, 3, 0.1, 795 ACSR 2021-01-012021-12-31 C000533 ELWOOD (KP) - KY, Distribution, , 46, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 Hazard Station Rehab, 3213771.47ferc:ElectricUtilityMember 2021-12-31 C000533 353.16, 2054000, 0.0215 2021-01-012021-12-31 C000533 HATFIELD (KP) - KY, Transmission, , 138, 69, 46, 60, 1, ,  2021-01-012021-12-31 C000533 Senior Unsecured Notes - 8.130%, State Commission Authority Case # 2008-00442 2021-12-31 C000533 HENRY CLAY - KY, Distribution, , 46, 0, 0, 0, , , STATCAP 2021-12-31 C000533 AF1-162, 9639.34 2021-01-012021-12-31 C000533 Int Exp Capd for Taxferc:ElectricUtilityMember 2021-12-31 C000533 RUSSELL - KY, Distribution, , 69, 12, , 22.4, 1, ,  2021-01-012021-12-31 C000533 Accrued Book Pensionferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 TOM WATKINS - KY, Distribution, , 69, 12, , 10.5, 1, ,  2021-12-31 C000533 Accrued Book Pensionferc:ElectricUtilityMember 2021-12-31 C000533 BEAVER CREEK - KY, Transmission, , 138, 0, 0, 0, , , REACTOR 2021-12-31 C000533 Industrial General Service I 2021-01-012021-12-31 C000533 Corp Safety & Health, AEPSC 2021-01-012021-12-31 C000533 ferc:SulfurDioxideMember Allowances Used 2021-01-012021-12-31 C000533 Senior Unsecured Notes - 3.45%, Series H 2021-01-012021-12-31 C000533 FEDS CREEK - KY, Distribution, , 69, 12, , 22.34, 1, ,  2021-12-31 C000533 Building and Property Leases, AEPSC 2021-01-012021-12-31 C000533 Fleet and Vehicle Charges, AEPSC 2021-01-012021-12-31 C000533 Int Exp Capd for Tax 2021-01-012021-12-31 C000533 0117 MILBROOK PARK, OH, FULLERTON, 1, 5.08, 556.5 MCM 2021-01-012021-12-31 C000533 PJM Trans Enhancement Rev Various Various FNO 2021-01-012021-12-31 C000533 ferc:DirectPayrollDistributionMember 186 - Misc Deferred Debits 2021-01-012021-12-31 C000533 Nicholas K. Akins, Chairman of the Board and  Chief Executive Officer 2021-01-012021-12-31 C000533 Reg Asset - SFAS 112 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember NOL State Deferred Tax Asset 2020-12-31 C000533 ferc:ElectricUtilityMember KPCo T Work, 1280901.21 2021-12-31 C000533 ferc:TransmissionStudiesMember AG2-681, 1195.22 2021-01-012021-12-31 C000533 JOHNS CREEK - KY, Transmission, , 138, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 DAISY - KY, Distribution, , 69, 12, , 4.7, 1, ,  2021-12-31 C000533 FICA 2021, Federal Insurance Tax, , 2021-01-012021-12-31 C000533 THELMA - KY, Transmission, , 138, 0, 0, 0, , , STATCAP 2021-12-31 C000533 A(6)f: Other (Metering), 1 item under $50,000 2021-01-012021-12-31 C000533 Civil & Political Activities and Other Svcs, AEPSC 2021-01-012021-12-31 C000533 0143 HAZARD, WOOTON, 1, 0.6, 795 KCM ACSR 2021-01-012021-12-31 C000533 AG2-679, 1537.76 2021-01-012021-12-31 C000533 State Tax, Income Tax, MULTI, 2019 2021-01-012021-12-31 C000533 T/KP/Transmission Work, 5131464.83ferc:ElectricUtilityMember 2021-12-31 C000533 STONE - KY, Transmission, , 138, 70.5, 46, 90, 1, ,  2021-01-012021-12-31 C000533 MCKINNEY - KY, Distribution, , 46, 34, , 20, 1, ,  2021-01-012021-12-31 C000533 KYPCo Distr Pre Eng Parent, 4173910.36ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 314 - Big Sandy, 63108000, 0.0278 2021-01-012021-12-31 C000533 ferc:AllocationOfPayrollChargedForClearingAccountsMember 2021-01-012021-12-31 C000533 ferc:OtherStateTaxMember 2020-12-31 C000533 364, 263212000, 0.0352 2021-01-012021-12-31 C000533 HADDIX - KY, Distribution, , 69, 34.5, , 25, 1, ,  2021-12-31 C000533 PJM 2020 2021-01-012021-12-31 C000533 Other Debit or Cr. Items (Describe, details in footnote):ferc:ElectricUtilityMember 2021-01-012021-12-31 C000533 0121 HATFIELD, INEZ, 1, 14.67, 1033.5 VAR 2021-01-012021-12-31 C000533 ferc:ElectricUtilityMember 2020-01-012020-12-31 C000533 SFAS 109 Deferred FIT 2021-01-012021-12-31 C000533 BELFRY - KY, Distribution, , 46, 12, , 10.5, 1, ,  2021-12-31 C000533 ferc:PayrollTaxMember 2021-12-31 C000533 Treasury & Risk, AEPSC 2021-01-012021-12-31 C000533 4% 2021-01-012021-12-31 C000533 Notes Payable to Associated Companies 2021-01-012021-12-31 C000533 0110 BEAVER CREEK, KY, BIG SANDY, KY, 2, 1.48, 954KCM ACSR 2021-01-012021-12-31 C000533 PRINCESS - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-12-31 C000533 WORTHINGTON - KY, Distribution, , 69, 12, , 1.5, 1, ,  2021-01-012021-12-31 C000533 OTHERferc:OtherUtilityMember 2021-12-31 C000533 ferc:TransmissionSubstationMember 2021-12-31 C000533 HADDIX - KY, Distribution, , 69, 0, 0, 0, , , STATCAP 2021-01-012021-12-31 C000533 Regulatory Services, AEPSC 2021-01-012021-12-31 C000533 Local Bank Term Loan, State Commission Authority Case# 2014-00210 2021-12-31 C000533 Increases (Decreases) Due to Miscellaneous Paid-In Capital 2021-01-012021-12-31 C000533 FISHTRAP - KY, Distribution, , 69, 12, , 3.75, 1, ,  2021-12-31 C000533 ferc:ElectricUtilityMember State Tax, Income Tax, CA, 2021 2021-01-012021-12-31