003.30017.3303.40003.517.34000217.35304017.360500617.3700017.383.2000017.390000180001900002030398968317.2323357202217.2417.2545985000017.261177052617.271081802617.2826161517.298512417.3012317.31417.325040017.1310000002004355469417.140false003607239115.1030Jeffrey W. Hoersdig,Assistant ControllerOK17.1500Electric - Oklahoma15.2false9.100040017.169.200005000017.170000060017.1800310485591000070017.19C00052500900012017.20130000013.010160017.21010013.0200000013.03017.220013.040013.05203013.0604002413.0750013.086013.09025.1713.10013.11023013.12413.14052613.1613613.180713.200080633056513.2209001616831110106175425161683111001170417661012860706508076064065908800906710688446101169012001301401576077016010317375934671301403322610401870417661150266374560191600170180802010R17.032011113017.04411350012017.057009013017.0600014017.0700015017.08000016017.090010417017.100060017.01017.1190100217.02017.120001312102342215232800144136243725408955081982659233572022276100297704176610033226104031800949304940329472356019020009493049421014665465387660570221.101.202301669019092401299644628026028000290001669019090166901909300031233031000032116858305003300210true2212271786335000005305403.10true0550Wdesk from Workiva3004 C000525 Capital Contributions from Parent 2020-01-012020-12-31 C000525 ferc:ElectricUtilityMember 4% 2021-01-012021-12-31 C000525 TL81592 Comanche (WFEC), Waurika, 1, 14.14, 1, 1272 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 TL81653 Norge Road, Southwestern Power Station, 1, 0.55, 1, 397.5 ACSR, 0, 0 2021-01-012021-12-31 C000525 ferc:FederalTaxMember 2021-01-012021-12-31 C000525 ScheduleAllowanceInventoryAbstract 2021-01-012021-12-31 C000525 ferc:SalesAndUseTaxMember 2021-12-31 C000525 TL81601 Tulsa North Bus #2, , 1, 0.13, 1, 2156 ACSR, 0, 0 2021-01-012021-12-31 C000525 SchedulePurchasedPowerAbstract 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember OK Transco Gen Plant Cap Blkt 2021-12-31 C000525 ferc:ElectricUtilityMember OKTC Telecom Modernization Pro 2021-12-31 C000525 S-3 Filing FeesAmortized through April 2024 2021-12-31 C000525 Sales & Use Tax-2020, Sales And Use Tax, , 2020-12-31 C000525 ferc:ElectricUtilityMember Eliza Creek to Shidler OK Tran 2021-12-31 C000525 ferc:ElectricUtilityMember Provision for Revenue refund 2021-12-31 C000525 TL81603 Boggy Creek, Wapanucka, 1, 5.82, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 State DITC 2021-01-012021-12-31 C000525 SFAS 109 Deferred FIT 2020-12-31 C000525 ferc:ElectricUtilityMember Net operating Loss and tax Credit carry forwards 2021-01-012021-12-31 C000525 Transmission Formula Rate filing 2021-12-31 C000525 TL81602 Red Rock, Darlington, 1, 7.58, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 Capital Contributions from Parent 2021-01-012021-12-31 C000525 Tulsa SE Line OK TransCo CI 2021-01-012021-12-31 C000525 Transmission Expenses - Maintenance, PSO 2021-01-012021-12-31 C000525 ferc:OtherUtilityOrNonutilityMember 0 2021-01-012021-12-31 C000525 Notes Receivable from Associated Companies 2021-01-012021-12-31 C000525 353.16 2021-01-012021-12-31 C000525 Senior Notes, Series B, Tranche C, 4.38% 2021-12-31 C000525 Barnsdall to Tulsa N Trans CIferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 Sales & Use Tax-2021, Sales And Use Tax, , 2020-12-31 C000525 ferc:ElectricUtilityMember OK Transco Gen Plant Cap Blkt 2021-01-012021-12-31 C000525 Othersferc:OtherUtilityMember 2021-01-012021-12-31 C000525 ferc:JuneMember 0 2021-01-012021-12-31 C000525 Fuel & Storeroom Services, AEPSC 2021-01-012021-12-31 C000525 Senior Notes, Series B, Tranche C, 4.38% 2021-01-012021-12-31 C000525 State Tax-2019, Income Tax, , 2021-01-012021-12-31 C000525 ferc:OtherElectricUtilityMember 2020-12-31 C000525 CIAC Proceeds 2020-01-012020-12-31 C000525 TL81588 Frederick Junction, Snyder, 1, 18.48, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 356.16 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember OKTC Telecom Modernization Pro 2021-01-012021-12-31 C000525 Purchases/Transfers:ferc:SulfurDioxideMember 2021-01-012021-12-31 C000525 TL81587 Chouteau, Tulsa Southeast, 1, 49.5, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 Transmission Expenses - Operation, PSO 2021-01-012021-12-31 C000525 Other (Specify)ferc:OtherUtilityMember 2020-12-31 C000525 Senior Notes, Series A, Tranche E, 4.83% 2021-12-31 C000525 ScheduleExtraordinaryPropertyLossesAbstract 2021-01-012021-12-31 C000525 ferc:NitrogenOxideMember Purchases/Transfers: 2021-01-012021-12-31 C000525 NOL - STATE C/F-DEF TAX ASSET 2021-01-012021-12-31 C000525 2020-12-31 C000525 ferc:ElectricUtilityMember T/WESTTR/TransCo Line Rebuild 2021-01-012021-12-31 C000525 Dawson Station OK TransCo CI 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember NOL - STATE C/F-DEF TAX ASSET 2021-01-012021-12-31 C000525 Increases (Decreases) from Donations Received from Stockholders 2021-01-012021-12-31 C000525 TL81834 Treasure Island, Caddo Wind, 1, 0.1, 1, 2-795 ACSR, , 2021-01-012021-12-31 C000525 ferc:SalesAndUseTaxMember 2020-12-31 C000525 TL81674 Lone Oak, Red Oak, 1, 20.71, 1, 556 ACSR, 0, 0 2021-01-012021-12-31 C000525 ferc:PropertyTaxMember 2021-01-012021-12-31 C000525 Transmission Expenses - Maintenance, AEPSC 2021-01-012021-12-31 C000525 TL81605 Cornville, Lindsay Water Flood, 1, 33.02, 1, 1272 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 TL90929 Chisholm, Gracemont, 1, 60.2, 1, 2-636 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 ScheduleCapitalStockAbstract 2021-01-012021-12-31 C000525 Tulsa SE Line OK TransCo CIferc:ElectricUtilityMember 2021-12-31 C000525 Net operating Loss and tax Credit carry forwards 2021-01-012021-12-31 C000525 Federal Tax, Income Tax, ,ferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 DSIT ENTRY - NORMALIZEDferc:ElectricUtilityMember 2021-12-31 C000525 transmission work OK TransCo 2021-01-012021-12-31 C000525 ScheduleTransmissionOfElectricityByIsoOrRtoAbstract 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember transmission work OK TransCo 2021-12-31 C000525 State Tax-2019, Income Tax, , 2020-12-31 C000525 Sand Springs Station Rebuildferc:ElectricUtilityMember 2021-12-31 C000525 Other Accounts (Specify, provide details in footnote): 2021-01-012021-12-31 C000525 ELK CITY - OK, Transmission, , 230, 138, 13.8, 450,  2021-12-31 C000525 ScheduleUnrecoveredPlantAndRegulatoryStudyCostsAbstract 2021-01-012021-12-31 C000525 David M. Feinberg, Vice President and Secretary 2021-01-012021-12-31 C000525 Trustee Fees 2021-01-012021-12-31 C000525 OK TRANSCo Dist Pre Eng Parent 2021-01-012021-12-31 C000525 SPP  OLF 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember NOL - STATE C/F-DEF TAX ASSET 2020-12-31 C000525 DSIT ENTRY - NORMALIZEDferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 State Tax-2021, Income Tax, , 2021-12-31 C000525 Property Tax-2021, , , 2021-12-31 C000525 ferc:OperatingUtilityMember 2021-12-31 C000525 Property Tax-2021, , , 2020-12-31 C000525 ferc:ElectricUtilityMember 3% 2021-01-012021-12-31 C000525 Mark C. McCullough, President and Chief Operating Officer 2021-01-012021-12-31 C000525 Toby L. Thomas,President and Chief Operating Officer 2021-01-012021-12-31 C000525 ferc:ElectricOtherFacilitiesMember Other (provide details in footnote): 2021-01-012021-12-31 C000525 TL81645 Hugo, Valliant, 1, 0.11, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember TransCo Prattville-SandSprings 2021-12-31 C000525 ferc:ElectricUtilityMember Dawson Station OK TransCo CI 2021-12-31 C000525 Regulatory Assets SFAS 109 - Oferc:NonUtilityMember 2020-12-31 C000525 ferc:OperatingUtilityMember 2020-12-31 C000525 transmission line, Total shown in Column J-P, , 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember 2021-12-31 C000525 Building and Property Leases, PSO 2021-01-012021-12-31 C000525 PSO Tulsa OKTCO TTMP 2022 2021-01-012021-12-31 C000525 Senior Notes, Series B, Tranche B, 4.05% 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Pryor Junct NTC 386 CI 2021-01-012021-12-31 C000525 Senior Notes, Series B, Tranche F, 5.52% 2021-12-31 C000525 Senior Notes, Series D, Tranche G, 3.10% 2021-01-012021-12-31 C000525 ferc:FederalTaxMember 2020-12-31 C000525 ferc:ElectricUtilityMember EXCESS ADFIT 2836 - UNPROTECTE 2021-12-31 C000525 SPP FERC Electric Tariff Vol. No. 1 Attachment H, Table 1, ER18-194 2021-01-012021-12-31 C000525 Regulatory Assets SFAS 109 - Oferc:NonUtilityMember 2021-01-012021-12-31 C000525 TOTAL GENERAL PLANT 2021-01-012021-12-31 C000525 ferc:ElectricPlantInServiceMemberferc:ElectricUtilityMember 2020-12-31 C000525 Accrued company wide incentive compensationferc:ElectricUtilityMember 2020-12-31 C000525 Senior Notes, Series C, Tranche I, 4.53% 2021-01-012021-12-31 C000525 355 2021-01-012021-12-31 C000525 RED OAK (PO) - OK, Transmission, , 138, 70.5, 13.09, 90,  2021-01-012021-12-31 C000525 SFAS 109 Deferred FIT 2021-12-31 C000525 10% 2021-01-012021-12-31 C000525 TL81820 Elk City, Clinton Junction, 1, 24, 1, 636 ACSR, , 2021-01-012021-12-31 C000525 State Tax-2018, Income Tax, , 2021-01-012021-12-31 C000525 ScheduleSalesForResaleAbstract 2021-01-012021-12-31 C000525 OKTC - BlnktProj Under $3M 2021-01-012021-12-31 C000525 ferc:DecemberMember 0 2021-01-012021-12-31 C000525 Nicholas K. Akins,Chairman of the Board and Chief Executive Officer 2021-01-012021-12-31 C000525 357 2021-01-012021-12-31 C000525 , , , 2020-12-31 C000525 ferc:StateTaxMember 2021-01-012021-12-31 C000525 EXCESS DSIT - UNPROTECTED OKferc:ElectricUtilityMember 2021-12-31 C000525 ScheduleAmountsIncludedInIsoOrRtoSettlementAbstract 2021-01-012021-12-31 C000525 Allowances Usedferc:SulfurDioxideMember 2021-01-012021-12-31 C000525 Acquired Assets 2021-01-012021-12-31 C000525 ferc:FederalTaxMember 2021-12-31 C000525 CANADIAN RIVER - OK, Transmission, , 345, 138, 13.8, 450,  2021-12-31 C000525 Other (provide details in footnote): 2021-01-012021-12-31 C000525 TL81607 Grady, Rush Springs, 1, 5.82, 1, 1533 ACSR, 0, 0 2021-01-012021-12-31 C000525 TL81684 Northeastern, Generator NO 1, 1, 0.05, 1, 4-1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 ScheduleElectricPlantHeldForFutureUseAbstract 2021-01-012021-12-31 C000525 VALLIANT 345 - OK, Transmission, , 345, 138, 13.8, 450,  2021-12-31 C000525 ferc:ElectricPlantInServiceMemberferc:ElectricUtilityMember 2021-12-31 C000525 ferc:ElectricUtilityMember Norge Rd to SWPS OK Trans CI 2021-12-31 C000525 NERC Penalty Accrual (long-term) 2021-12-31 C000525 ferc:PropertyTaxMember 2020-12-31 C000525 ferc:JulyMember 0 2021-01-012021-12-31 C000525 Senior Notes, Series C, Tranche H, 4.05% 2021-12-31 C000525 Base Plan Funding True-Up Refund 2020-12-31 C000525 State Tax-2018, Income Tax, , 2021-12-31 C000525 Adoption of ASC 326 2020-01-012020-12-31 C000525 Scott P. Moore,Vice President 2021-01-012021-12-31 C000525 Senior Notes, Series B, Tranche D, 5.32% 2021-12-31 C000525 State Tax-2020, Income Tax, , 2021-12-31 C000525 ferc:StateTaxMember 2021-12-31 C000525 Franchise Tax-2021, Franchise Tax, , 2020-12-31 C000525 RED OAK (PO) - OK, Transmission, , 69, 0, 0, 0, STATCAP 2021-01-012021-12-31 C000525 DSIT ENTRY - NORMALIZEDferc:ElectricUtilityMember 2020-12-31 C000525 ferc:MayMember 0 2021-01-012021-12-31 C000525 TL81590 Ellis Extension, , 1, 0.5, 2, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 TL81687 Northeastern, Generator Xfmrs, 1, 0.08, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 20211101-5303, 44501, ER18-194-000 2021-01-012021-12-31 C000525 S-3 Filing FeesAmortized through April 2024 2021-01-012021-12-31 C000525 Miscellaneous 2021-01-012021-12-31 C000525 ferc:SeptemberMember 0 2021-01-012021-12-31 C000525 Senior Notes, Series B, Tranche B, 4.05% 2021-12-31 C000525 ferc:ElectricUtilityMember 7% 2021-01-012021-12-31 C000525 397 2021-01-012021-12-31 C000525 ferc:OctoberMember 0 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Net operating Loss and tax Credit carry forwards 2020-12-31 C000525 TL81650 Southwestern Power Station, Cornville, 1, 24.47, 1, 636 ACSR, 0, 0 2021-01-012021-12-31 C000525 2021-01-012021-12-31 C000525 ferc:OtherUtilityMember 2020-12-31 C000525 Unamortized Credit Line FeesAmortized through March 2026 2021-01-012021-12-31 C000525 Federal Tax, Income Tax, , 2021-01-012021-12-31 C000525 Notes Payable to Associated Companies - Issued 2021-01-012021-12-31 C000525 TL90928 Valliant, Northwest Texarkana, 1, 35.11, 1, 2-954 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMemberferc:FranchiseTaxMember 2021-01-012021-12-31 C000525 3% 2021-01-012021-12-31 C000525 30% 2021-01-012021-12-31 C000525 ScheduleNuclearFuelMaterialsAbstract 2021-01-012021-12-31 C000525 Senior Notes, Series E, Tranche G, 4.00% 2021-12-31 C000525 10%ferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 MCALESTER CITY - OK, Transmission, , 23, 0, 0, 0, STATCAP 2021-12-31 C000525 Accrued company wide incentive compensationferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 Notes Payable to Associated Companies 2021-01-012021-12-31 C000525 Use of Jointly Owned Facility, PSO 2021-01-012021-12-31 C000525 Contr In Aid of Constr Advance 2020-12-31 C000525 Federal Tax, Income Tax, , 2021-12-31 C000525 Transmission Expenses - Operation, AEPSC 2021-01-012021-12-31 C000525 TL81688 Rocky Point, 138KV Extension, 1, 1.26, 2, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember OTHER 2021-01-012021-12-31 C000525 7% 2021-01-012021-12-31 C000525 TL81652 Cornville, Cimarron (OG&E), 1, 0.25, 1, 1590 ACSR, 0, 0 2021-01-012021-12-31 C000525 Transmission Formula Rate filing 2021-01-012021-12-31 C000525 391 2021-01-012021-12-31 C000525 ScheduleSalesOfElectricityByRateSchedulesAbstract 2021-01-012021-12-31 C000525 Senior Notes, Series B, Tranche D, 5.32% 2021-01-012021-12-31 C000525 ELK CITY - OK, Transmission, , 230, 138, 13.8, 450,  2021-01-012021-12-31 C000525 0 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember 30% 2021-01-012021-12-31 C000525 GENERAL PLANT 2021-01-012021-12-31 C000525 ScheduleMonthlyIsoOrRtoTransmissionSystemPeakLoadAbstract 2021-01-012021-12-31 C000525 Tulsa SE Line OK TransCo CIferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 TL81632 Frederick Junction, Vernon Main Street (OK), 1, 13.3, 1, 556 ACSR, , 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember 2020-01-012020-12-31 C000525 ferc:ElectricPlantInServiceMemberferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 TransCo Prattville-SandSprings 2021-01-012021-12-31 C000525 TL81629 Mound Road, Shidler, 2, 33.92, 1, 636 ACSR, 0, 0 2021-01-012021-12-31 C000525 State Tax-2021, Income Tax, , 2021-01-012021-12-31 C000525 ferc:GeneralPlantMemberferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 Federal Tax, Income Tax, , 2020-12-31 C000525 Corporate Memberships 2021-01-012021-12-31 C000525 Other Accounts (Specify, details in footnote): 2021-01-012021-12-31 C000525 ferc:SalesAndUseTaxMember 2021-01-012021-12-31 C000525 Unamortized Credit Line FeesAmortized through March 2026 2020-12-31 C000525 TL81645 Hugo, Valliant, 1, 23.13, 1, 477 ACSR, 0, 0 2021-01-012021-12-31 C000525 356 2021-01-012021-12-31 C000525 TL81626 Wewika Sub, Keystone (SWPA), 2, 2, 1, 795 ACSR, 0, 0 2021-01-012021-12-31 C000525 ScheduleMonthlyPeakAndOutputAbstract 2021-01-012021-12-31 C000525 0ferc:MarchMember 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Book Operating lease 2021-12-31 C000525 Senior Notes, Series M 3.65% 2021-12-31 C000525 TL81652 Cornville, Cimarron (OG&E), 1, 3.17, 2, 1590 ACSR, , 2021-01-012021-12-31 C000525 Administrative & General Expenses - Operations, AEPSC 2021-01-012021-12-31 C000525 Increases (Decreases) in Other Paid-In Capital 2021-01-012021-12-31 C000525 NERC Penalty Accrual (long-term) 2020-12-31 C000525 350 (Rights) 2021-01-012021-12-31 C000525 CIAC Proceeds 2021-01-012021-12-31 C000525 TL81826 Bartlesville, KG&E Interconnect, 1, 5.86, 2, 1590 ACSR, 0, 0 2021-01-012021-12-31 C000525 0ferc:AprilMember 2021-01-012021-12-31 C000525 Deferred Expenses 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Sales & Use Tax-2021, Sales And Use Tax, , 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Net operating Loss and tax Credit carry forwards 2021-12-31 C000525 ScheduleGeneratingPlantStatisticsAbstract 2021-01-012021-12-31 C000525 Pryor Junct NTC 386 CI 2021-01-012021-12-31 C000525 ferc:FederalInsuranceTaxMember 2020-12-31 C000525 Long Term Issuances Costs 2020-01-012020-12-31 C000525 TL81590 Ellis Extension, , 1, 0.02, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 Other (provide details in footnote): 2021-01-012021-12-31 C000525 Acquired Assets 2020-01-012020-12-31 C000525 TL81585 Canadian River, McAlester City, 1, 15.09, 1, 1590 ACSR, 0, 0 2021-01-012021-12-31 C000525 Eliza Creek to Shidler OK Tran 2021-01-012021-12-31 C000525 TL81649 Jensen, Weatherford Jct, 1, 9.1, 1, 636 ACSR, 0, 0 2021-01-012021-12-31 C000525 ScheduleDistributionOfSalariesAndWagesAbstract 2021-01-012021-12-31 C000525 Senior Notes, Series E, Tranche G, 4.00% 2021-01-012021-12-31 C000525 Deferred SIT 2021-01-012021-12-31 C000525 ScheduleSteamElectricGeneratingPlantStatisticsAbstract 2021-01-012021-12-31 C000525 TL81826 Bartlesville, KG&E Interconnect, 1, 15.11, 1, 1590 ACSR, 0, 0 2021-01-012021-12-31 C000525 Sand Springs Station Rebuildferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 T/WESTTR/TransCo Line Rebuild 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Book Operating lease 2020-12-31 C000525 ferc:ElectricUtilityMember NOL - STATE C/F-DEF TAX ASSET 2021-12-31 C000525 DSIT entry normalisedferc:ElectricUtilityMember 2020-12-31 C000525 2020-01-012020-12-31 C000525 TL81648 Weatherfrd Junction, Clinton Junction, 1, 21.44, 1, 636 ACSR, 0, 0 2021-01-012021-12-31 C000525 ferc:FranchiseTaxMember 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMemberferc:IntangiblePlantMember 2021-01-012021-12-31 C000525 4% 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 ScheduleElectricPropertyLeasedToOthersAbstract 2021-01-012021-12-31 C000525 OK Transco Stationferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 LONE OAK - OK, Transmission, , 138, 0, 0, 0, STATCAP 2021-01-012021-12-31 C000525 OK TransCo Work 2021-01-012021-12-31 C000525 TL81819 Southwestern Plant, Hobart JCT Sub, 1, 17, 1, 2-477 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 TL81753 Spunky Creek Extens, , 1, 0.07, 2, 1590 ACSR, 0, 0 2021-01-012021-12-31 C000525 Line cost and expense are, not available by individual, , 2021-01-012021-12-31 C000525 Julia A. Sloat,Vice President and Chief Financial Officer 2021-01-012021-12-31 C000525 NORTHEASTERN 345 - OK, Transmission, , 345, 138, 13.8, 450,  2021-01-012021-12-31 C000525 OK Transco Stationferc:ElectricUtilityMember 2021-12-31 C000525 ferc:ElectricUtilityMemberferc:StateTaxMember 2021-01-012021-12-31 C000525 390 2021-01-012021-12-31 C000525 MCALESTER CITY - OK, Transmission, , 23, 0, 0, 0, STATCAP 2021-01-012021-12-31 C000525 OK Transco Station 2021-01-012021-12-31 C000525 OK TransCo Workferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 ferc:OtherUtilityMember 2021-01-012021-12-31 C000525 Franchise Tax-2021, Franchise Tax, ,ferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 Note:  Respondent does not have an Executive Committee 2021-01-012021-12-31 C000525 ferc:JanuaryMember 0 2021-01-012021-12-31 C000525 , , , 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Pryor Junct NTC 386 CI 2021-12-31 C000525 TL81586 141st & Pine Ext, , 1, 0.59, 2, 1272 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 Wade A. Smith, Vice President 2021-01-012021-12-31 C000525 NORTHEASTERN 345 - OK, Transmission, , 345, 138, 13.8, 450,  2021-12-31 C000525 SchedulePumpedStorageGeneratingPlantStatisticsAbstract 2021-01-012021-12-31 C000525 Senior Notes, Series A, Tranche E, 4.83% 2021-01-012021-12-31 C000525 Provision for Revenue refund 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Book Operating lease 2021-01-012021-12-31 C000525 Sales & Use Tax-2021, Sales And Use Tax, , 2021-12-31 C000525 TL81619 Heritage Trail Tap, , 1, 0.2, 2, 477 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 Sales & Use Tax-2021, Sales And Use Tax, , 2021-01-012021-12-31 C000525 Senior Notes, Series A, Tranche D, 4.78% 2021-12-31 C000525 NERC Penalty Accrual (long-term) 2021-01-012021-12-31 C000525 ScheduleCommonUtilityPlantAndExpensesAbstract 2021-01-012021-12-31 C000525 ferc:NovemberMember 0 2021-01-012021-12-31 C000525 LONE OAK - OK, Transmission, , 138, 0, 0, 0, STATCAP 2021-12-31 C000525 Other (provide details in footnote): 2021-01-012021-12-31 C000525 Senior Notes, Series B, Tranche E, 5.42% 2021-01-012021-12-31 C000525 Sales & Use Tax-2020, Sales And Use Tax, , 2021-01-012021-12-31 C000525 OK TransCo Workferc:ElectricUtilityMember 2021-12-31 C000525 Senior Notes, Series A, Tranche D, 4.78% 2021-01-012021-12-31 C000525 Senior Notes, Series C, Tranche F, 3.81% 2021-01-012021-12-31 C000525 ferc:PropertyTaxMemberferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 ferc:Quarter1Member 0 2021-01-012021-12-31 C000525 20210525-5207, 44341, ER18-194-000 2021-01-012021-12-31 C000525 TL81814 Northeast Plant, Tulsa North, 1, 0.12, 1, 795 ACSR, 0, 0 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Other Minor Projects Which is under 5% or $1,000,000 2021-01-012021-12-31 C000525 Notes Payable Affiliated from AEP Transmission Company, LLC 2021-01-012021-12-31 C000525 ferc:Quarter3Member 0 2021-01-012021-12-31 C000525 Lines Under 138KV, , , 2021-01-012021-12-31 C000525 DSIT entry normalised 2021-01-012021-12-31 C000525 0 2021-12-31 C000525 Unamortized Credit Line FeesAmortized through March 2026 2021-12-31 C000525 OK TRANSCo Dist Pre Eng Parentferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 ferc:OtherElectricUtilityMember 2021-12-31 C000525 TL81636 Elk City, Hobart JCT, 1, 32.96, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 State Tax-2018, Income Tax, , 2020-12-31 C000525 RED OAK (PO) - OK, Transmission, , 138, 70.5, 13.09, 90,  2021-12-31 C000525 Senior Notes, Series B, Tranche F, 5.52% 2021-01-012021-12-31 C000525 Franchise Tax-2021, Franchise Tax, , 2021-01-012021-12-31 C000525 Amortization of 2021-01-012021-12-31 C000525 ferc:StateTaxMember 2020-12-31 C000525 B(4): Research Support to Others, 1 item under $50,000 2021-01-012021-12-31 C000525 TL81835 Lone Oak Sub, SWPA Interco Broken Bow Dam, 2, 78.12, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 A(6): Other, 3 items under $50,000 2021-01-012021-12-31 C000525 S-3 Filing FeesAmortized through April 2024 2020-12-31 C000525 Allowances Usedferc:NitrogenOxideMember 2021-01-012021-12-31 C000525 Base Plan Funding True-Up Refund 2021-01-012021-12-31 C000525 RED OAK (PO) - OK, Transmission, , 69, 0, 0, 0, STATCAP 2021-12-31 C000525 69kV Line Rebuild 2021-01-012021-12-31 C000525 352 2021-01-012021-12-31 C000525 Book Operating lease 2021-01-012021-12-31 C000525 0, 0 2021-12-31 C000525 EXCESS DSIT - UNPROTECTED OK 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Dawson Station OK TransCo CI 2021-01-012021-12-31 C000525 TL81620 Darlington, OGE Roman Nose, 1, 15.52, 1, 1272 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 Senior Notes, Series B, Tranche E, 5.42% 2021-12-31 C000525 Long Term Issuances Costs 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember transmission work OK TransCo 2021-01-012021-12-31 C000525 Notes Payable to Associated Companies - Issued 2020-01-012020-12-31 C000525 TRANSMISSION 2021-01-012021-12-31 C000525 ferc:FebruaryMember 0 2021-01-012021-12-31 C000525 SFAS 109 Deferred FIT 2021-12-31 C000525 Senior Notes. Series D 3.10% 2021-01-012021-12-31 C000525 TL81649 Jensen, Weatherford Jct, 1, 17.2, 2, 636 ACSR, 0, 0 2021-01-012021-12-31 C000525 B(1): Research Support, 10 items under $50,000 2021-01-012021-12-31 C000525 Barnsdall to Tulsa N Trans CI 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember EXCESS ADFIT 2836 - UNPROTECTE 2020-12-31 C000525 A(2): Transmission, 1 item under $50,000 2021-01-012021-12-31 C000525 Minor Items < $25,000 2021-01-012021-12-31 C000525 Property Tax-2020, , , 2020-12-31 C000525 Property Tax-2020, , ,ferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 ScheduleCapitalStockExpenseAbstract 2021-01-012021-12-31 C000525 353 2021-01-012021-12-31 C000525 TL81818A Prattville Tap, , 1, 0.22, 1, 1926.9 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 Deferred SIT 2021-12-31 C000525 TL81595 McAlester, Atoka, 1, 45.34, 1, 1272 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 TL81593 Cornville, Maud (OGE), 2, 13.74, 1, 1272 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 ScheduleAccumulatedDeferredInvestmentTaxCreditsAbstract 2021-01-012021-12-31 C000525 Billings and Deferred Projects 2021-01-012021-12-31 C000525 ferc:Quarter4Member 0 2021-01-012021-12-31 C000525 TL81591 Maud (OG&E), Weleetka, 1, 45.13, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 Senior Notes, Series C, Tranche H, 4.05% 2021-01-012021-12-31 C000525 State Tax-2017, Income Tax, , 2020-12-31 C000525 PRYOR JUNCTION - OK, Transmission, , 138, 115, 13.8, 120,  2021-12-31 C000525 TL81820 Elk City, Clinton Junction, 24, 1, ACSR, , 0, 2021-01-012021-12-31 C000525 State Tax-2019, Income Tax, , 2021-12-31 C000525 SFAS 109 Deferred FIT 2021-01-012021-12-31 C000525 Increases (Decreases) Due to Miscellaneous Paid-In Capital 2021-01-012021-12-31 C000525 Minor Items < $25,000 2021-12-31 C000525 DSIT ENTRY - NORMALIZED 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember EXCESS ADFIT 2836 - UNPROTECTE 2021-01-012021-12-31 C000525 Increases (Decreases) Due to Reductions in Par or Stated Value of Capital Stock 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember TransCo Prattville-SandSprings 2021-01-012021-12-31 C000525 TL81826A Bartlesville, KG&E Interconnect, 1, 5.97, 1, 795 ACSR, , 2021-01-012021-12-31 C000525 SFAS 109 Deferred FIT 2021-01-012021-12-31 C000525 Sand Springs Station Rebuild 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember State DITC 2021-01-012021-12-31 C000525 TL81597 Duncan, Comanche (WFEC), 1, 9.6, 1, 1272 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Eliza Creek to Shidler OK Tran 2021-01-012021-12-31 C000525 TL81609 Chisholm Extension, , 1, 0.4, 1, 1233.6 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 OK Transco Gen Plant Cap Blkt 2021-01-012021-12-31 C000525 ferc:FederalInsuranceTaxMember 2021-01-012021-12-31 C000525 0 2021-01-012021-12-31 C000525 Other (provide details in footnote): 2020-01-012020-12-31 C000525 ferc:ElectricUtilityMemberferc:SalesAndUseTaxMember 2021-01-012021-12-31 C000525 Other (provide details in footnote): 2021-01-012021-12-31 C000525 Regulatory Assets SFAS 109 - Oferc:NonUtilityMember 2021-12-31 C000525 TL81829 Red Oak, Howe - Midland, 1, 36.96, 1, 1272 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 PSO Tulsa OKTCO TTMP 2022ferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 TL81647 Snyder, Altus Junction, 1, 22.4, 1, 477 ACSR, 0, 0 2021-01-012021-12-31 C000525 Materials and Supplies, PSO 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember State Tax-2021, Income Tax, , 2021-01-012021-12-31 C000525 Senior Notes, Series J 4.25% 2021-12-31 C000525 TL81612 Martha Extension, , 1, 0.19, 1, 477 ACSR, 0, 0 2021-01-012021-12-31 C000525 Senior Notes, Series C, Tranche C, 3.56% 2021-12-31 C000525 EXCESS DSIT - UNPROTECTED OKferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 State Tax-2021, Income Tax, , 2020-12-31 C000525 0, 0 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMemberferc:FederalTaxMember 2021-01-012021-12-31 C000525 TL81655 Weatherfrd City Tap, , 1, 3.35, 1, 636 ACSR, 0, 0 2021-01-012021-12-31 C000525 OKTC - BlnktProj Under $3Mferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 ferc:OperatingUtilityMember 2021-01-012021-12-31 C000525 TL81834 Weleetka Sub, Lone Oak, 1, 45.96, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 0 2021-01-012021-12-31 C000525 TL81826 Bartlesville, KG&E Interconnect, 1, 1.4, 2, 795 ACSR, , 2021-01-012021-12-31 C000525 69kV Line Rebuildferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 Accrued company wide incentive compensation 2021-01-012021-12-31 C000525 Senior Notes, Series H 3.75% 2021-12-31 C000525 State Tax-2017, Income Tax, , 2021-01-012021-12-31 C000525 TOTAL, , , 2021-01-012021-12-31 C000525 Senior Notes, Series H 3.75% 2021-01-012021-12-31 C000525 ScheduleTransmissionOfElectricityByOthersAbstract 2021-01-012021-12-31 C000525 TL81585 Canadian River, McAlester City, 1, 1.33, 1, 795 ACSR, , 0 2021-01-012021-12-31 C000525 Information Technology, AEPSC 2021-01-012021-12-31 C000525 Property Tax-2021, , , 2021-01-012021-12-31 C000525 Senior Notes, Series C, Tranche C, 3.56% 2021-01-012021-12-31 C000525 VALLIANT 345 - OK, Transmission, , 345, 138, 13.8, 450,  2021-01-012021-12-31 C000525 SFAS 109 Deferred FIT 2020-12-31 C000525 ferc:ElectricUtilityMember Norge Rd to SWPS OK Trans CI 2021-01-012021-12-31 C000525 Building and Property Leases , AEPSC 2021-01-012021-12-31 C000525 Senior Notes, Series C, Tranche B, 3.18% 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMemberferc:TransmissionPlantMember 2021-01-012021-12-31 C000525 DEPRECIABLE SUM 2021-01-012021-12-31 C000525 TULSA NORTH 345 - OK, Transmission, , 345, 138, 34.5, 675,  2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Other Minor Projects Which is under 5% or $1,000,000 2021-12-31 C000525 TL81632 Frederick Junction, Vernon Main Street (OK), 1, 6.92, 1, 397 ACSR, , 2021-01-012021-12-31 C000525 Construction Services, PSO 2021-01-012021-12-31 C000525 354 2021-01-012021-12-31 C000525 2021-12-31 C000525 TOTAL TRANSMISSION 2021-01-012021-12-31 C000525 TL81835 Lone Oak Sub, SWPA Interco Broken Bow Dam, 1, 0.18, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 DSIT entry normalisedferc:ElectricUtilityMember 2021-12-31 C000525 Travel Expenses 2021-01-012021-12-31 C000525 Increases (Decreases) from Gain or Resale or Cancellation of Reacquired Capital Stock 2021-01-012021-12-31 C000525 Senior Notes, Series M 3.65% 2021-01-012021-12-31 C000525 OK TRANSCo Dist Pre Eng Parentferc:ElectricUtilityMember 2021-12-31 C000525 Adoption of ASC 326 2021-01-012021-12-31 C000525 ScheduleCorporationsControlledByRespondentAbstract 2021-01-012021-12-31 C000525 ScheduleTransmissionServiceAndGenerationInterconnectionStudyCostsAbstract 2021-01-012021-12-31 C000525 Senior Notes, Series C, Tranche I, 4.53% 2021-12-31 C000525 ScheduleInvestmentsInSubsidiaryCompaniesAbstract 2021-01-012021-12-31 C000525 398 2021-01-012021-12-31 C000525 TL81584 McAlester City Ext, , 1, 5.51, 1, 1272 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 Construction Services , AEPSC 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember T/WESTTR/TransCo Line Rebuild 2021-12-31 C000525 Other Debit or Cr. Items (Describe, details in footnote): 2021-01-012021-12-31 C000525 ferc:Quarter2Member 0 2021-01-012021-12-31 C000525 Other (provide details in footnote): 2021-01-012021-12-31 C000525 393 2021-01-012021-12-31 C000525 Other (provide details in footnote):ferc:GasOtherFacilitiesMember 2021-01-012021-12-31 C000525 Other (provide details in footnote): 2021-01-012021-12-31 C000525 2019-12-31 C000525 ferc:ElectricUtilityMember Provision for Revenue refund 2021-01-012021-12-31 C000525 TL81593 Cornville, Maud (OGE), 1, 46.24, 1, 1272 KCM ACSR, 0, 0 2021-01-012021-12-31 C000525 ScheduleMonthlyTransmissionSystemPeakLoadAbstract 2021-01-012021-12-31 C000525 State Tax-2020, Income Tax, , 2021-01-012021-12-31 C000525 Norge Rd to SWPS OK Trans CI 2021-01-012021-12-31 C000525 CANADIAN RIVER - OK, Transmission, , 345, 138, 13.8, 450,  2021-01-012021-12-31 C000525 OKTC Telecom Modernization Pro 2021-01-012021-12-31 C000525 ScheduleElectricEnergyAccountAbstract 2021-01-012021-12-31 C000525 Contr In Aid of Constr Advance 2021-01-012021-12-31 C000525 ScheduleHydroelectricGeneratingPlantStatisticsAbstract 2021-01-012021-12-31 C000525 TL81686 Northeastern, Generator NO 3 AND NO 4, 1, 0.37, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 TL81596 Hugo 138kV Tap, , 1, 20.84, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 TL81594 Atoka, Hugo, 1, 47.44, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 Property Tax-2021, , ,ferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 ferc:FranchiseTaxMember 2020-12-31 C000525 ferc:AugustMember 0 2021-01-012021-12-31 C000525 ferc:OtherUtilityMember 2021-12-31 C000525 Accrued company wide incentive compensationferc:ElectricUtilityMember 2021-12-31 C000525 SchedulePurchasesSalesOfAncillaryServicesAbstract 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember Provision for Revenue refund 2020-12-31 C000525 ferc:PropertyTaxMember 2021-12-31 C000525 DSIT entry normalisedferc:ElectricUtilityMember 2021-01-012021-12-31 C000525 TL81618 Sand Springs Sub, OG&E Interconnect, 1, 9, 1, 1926.9 ACSR, 0, 0 2021-01-012021-12-31 C000525 OKTC - BlnktProj Under $3Mferc:ElectricUtilityMember 2021-12-31 C000525 Property Tax-2020, , , 2021-01-012021-12-31 C000525 Not Applicable 2021-01-012021-12-31 C000525 358.16 2021-01-012021-12-31 C000525 Barnsdall to Tulsa N Trans CIferc:ElectricUtilityMember 2021-12-31 C000525 TL81604 Pontotoc, Wapanucka, 1, 6.4, 1, 1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 State Tax-2020, Income Tax, , 2020-12-31 C000525 Senior Notes. Series D 3.10% 2021-12-31 C000525 TL81823B Lehigh Extension, , 1, 0.36, 1, 477 ACSR, 0, 0 2021-01-012021-12-31 C000525 EXCESS ADFIT 2836 - UNPROTECTE 2021-01-012021-12-31 C000525 Senior Notes, Series C, Tranche F, 3.81% 2021-12-31 C000525 Contr In Aid of Constr Advance 2021-12-31 C000525 ScheduleRegionalTransmissionServiceRevenuesAbstract 2021-01-012021-12-31 C000525 PSO Tulsa OKTCO TTMP 2022ferc:ElectricUtilityMember 2021-12-31 C000525 B: Electric RD&D Performed External, 4 items under $50,000 2021-01-012021-12-31 C000525 ferc:TransmissionSubstationMember 2021-12-31 C000525 TULSA NORTH 345 - OK, Transmission, , 345, 138, 34.5, 675,  2021-12-31 C000525 Senior Notes, Series J 4.25% 2021-01-012021-12-31 C000525 Other (Specify)ferc:OtherUtilityMember 2021-12-31 C000525 TL81685 Northeastern, Generator NO 2, 1, 0.11, 1, 4-1272 ACSR, 0, 0 2021-01-012021-12-31 C000525 69kV Line Rebuildferc:ElectricUtilityMember 2021-12-31 C000525 PRYOR JUNCTION - OK, Transmission, , 138, 115, 13.8, 120,  2021-01-012021-12-31 C000525 0, 0 2021-01-012021-12-31 C000525 Other Minor Projects Which is under 5% or $1,000,000 2021-01-012021-12-31 C000525 Senior Notes, Series D, Tranche G, 3.10% 2021-12-31 C000525 Other (Specify)ferc:OtherUtilityMember 2021-01-012021-12-31 C000525 OTHER 2021-01-012021-12-31 C000525 ferc:ElectricUtilityMember 2020-12-31 utr:MVA xbrli:pure utr:mi iso4217:USD utr:MW xbrli:pure utr:kWh iso4217:USD utr:kWh utr:mi utr:kV utr:MWh iso4217:USD utr:kW
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)

AEP Oklahoma Transmission Company, Inc.
Year/Period of Report

End of:
2021
/
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

AEP Oklahoma Transmission Company, Inc.
02 Year/ Period of Report


End of:
2021
/
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)

1 Riverside Plaza, Columbus, OH 43215-2373
05 Name of Contact Person

Jason M. Johnson
06 Title of Contact Person

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

1 Riverside Plaza, 26th Flr, Columbus, OH 43215-2373
08 Telephone of Contact Person, Including Area Code

(614) 716-1000
09 This Report is An Original / A Resubmission

(1)
An Original

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

05/19/2022
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

Jeffrey W. Hoersdig
02 Title

Assitant Controller
03 Signature

Jeffrey W. Hoersdig
04 Date Signed (Mo, Da, Yr)

05/19/2022
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:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
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
N/A
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
N/A
16
ScheduleElectricPlantInServiceAbstract
Electric Plant in Service
204
17
ScheduleElectricPropertyLeasedToOthersAbstract
Electric Plant Leased to Others
213
N/A
18
ScheduleElectricPlantHeldForFutureUseAbstract
Electric Plant Held for Future Use
214
N/A
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
N/A
22
ScheduleMaterialsAndSuppliesAbstract
Materials and Supplies
227
23
ScheduleAllowanceInventoryAbstract
Allowances
228
N/A
24
ScheduleExtraordinaryPropertyLossesAbstract
Extraordinary Property Losses
230a
N/A
25
ScheduleUnrecoveredPlantAndRegulatoryStudyCostsAbstract
Unrecovered Plant and Regulatory Study Costs
230b
N/A
26
ScheduleTransmissionServiceAndGenerationInterconnectionStudyCostsAbstract
Transmission Service and Generation Interconnection Study Costs
231
N/A
27
ScheduleOtherRegulatoryAssetsAbstract
Other Regulatory Assets
232
28
ScheduleMiscellaneousDeferredDebitsAbstract
Miscellaneous Deferred Debits
233
29
ScheduleAccumulatedDeferredIncomeTaxesAbstract
Accumulated Deferred Income Taxes
234
30
ScheduleCapitalStockAbstract
Capital Stock
250
N/A
31
ScheduleOtherPaidInCapitalAbstract
Other Paid-in Capital
253
32
ScheduleCapitalStockExpenseAbstract
Capital Stock Expense
254b
N/A
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
N/A
37
ScheduleOtherDeferredCreditsAbstract
Other Deferred Credits
269
38
ScheduleAccumulatedDeferredIncomeTaxesAcceleratedAmortizationPropertyAbstract
Accumulated Deferred Income Taxes-Accelerated Amortization Property
272
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
N/A
44
ScheduleSalesOfElectricityByRateSchedulesAbstract
Sales of Electricity by Rate Schedules
304
N/A
45
ScheduleSalesForResaleAbstract
Sales for Resale
310
N/A
46
ScheduleElectricOperationsAndMaintenanceExpensesAbstract
Electric Operation and Maintenance Expenses
320
47
SchedulePurchasedPowerAbstract
Purchased Power
326
N/A
48
ScheduleTransmissionOfElectricityForOthersAbstract
Transmission of Electricity for Others
328
49
ScheduleTransmissionOfElectricityByIsoOrRtoAbstract
Transmission of Electricity by ISO/RTOs
331
N/A
50
ScheduleTransmissionOfElectricityByOthersAbstract
Transmission of Electricity by Others
332
N/A
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
54
ScheduleResearchDevelopmentOrDemonstrationExpendituresAbstract
Research, Development and Demonstration Activities
352
55
ScheduleDistributionOfSalariesAndWagesAbstract
Distribution of Salaries and Wages
354
N/A
56
ScheduleCommonUtilityPlantAndExpensesAbstract
Common Utility Plant and Expenses
356
N/A
57
ScheduleAmountsIncludedInIsoOrRtoSettlementAbstract
Amounts included in ISO/RTO Settlement Statements
397
N/A
58
SchedulePurchasesSalesOfAncillaryServicesAbstract
Purchase and Sale of Ancillary Services
398
N/A
59
ScheduleMonthlyTransmissionSystemPeakLoadAbstract
Monthly Transmission System Peak Load
400
N/A
60
ScheduleMonthlyIsoOrRtoTransmissionSystemPeakLoadAbstract
Monthly ISO/RTO Transmission System Peak Load
400a
N/A
61
ScheduleElectricEnergyAccountAbstract
Electric Energy Account
401a
N/A
62
ScheduleMonthlyPeakAndOutputAbstract
Monthly Peaks and Output
401b
N/A
63
ScheduleSteamElectricGeneratingPlantStatisticsAbstract
Steam Electric Generating Plant Statistics
402
N/A
64
ScheduleHydroelectricGeneratingPlantStatisticsAbstract
Hydroelectric Generating Plant Statistics
406
N/A
65
SchedulePumpedStorageGeneratingPlantStatisticsAbstract
Pumped Storage Generating Plant Statistics
408
N/A
66
ScheduleGeneratingPlantStatisticsAbstract
Generating Plant Statistics Pages
410
N/A
0
ScheduleEnergyStorageOperationsLargePlantsAbstract
Energy Storage Operations (Large Plants)
414
67
ScheduleTransmissionLineStatisticsAbstract
Transmission Line Statistics Pages
422
68
ScheduleTransmissionLinesAddedAbstract
Transmission Lines Added During Year
424
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:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
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.

Jeffrey W. Hoersdig,Assistant Controller

1 Riverside Plaza, Columbus, OH 43215-2373
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:
OK

Date of Incorporation:
2009-10-29

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:

(b) Date Receiver took Possession of Respondent Property:

(c) Authority by which the Receivership or Trusteeship was created:

(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.

Electric - Oklahoma
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:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
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.
AEP Transmission Company, LLC, controls 100% of the Respondent as of December 31, 2021. AEP Transmission Holding Company, LLC, controls 100% of AEP Transmission Company, LLC as of December 31, 2021. American Electric Power Company, Inc., a registered holding company, controls 100% of AEP Transmission Holding Company, LLC as of December 31, 2021.


Name of Respondent:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
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
Not Applicable


Name of Respondent:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
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
(a)
See Foot note


Name of Respondent:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
Q4
FOOTNOTE DATA

(a) Concept: OfficerTitle
Summary Compensation Table
The following table provides summary information concerning compensation earned by our Chief Executive Officer, our Chief Financial Officer and the three other most highly compensated executive officers, to whom we refer collectively as the named executive officers.
Name and Principal
Position
Year
Salary ($)(1)
Bonus ($)
Stock Awards
($)(2)
Non-Equity
Incentive
Plan
Compensation
($)(3)
Change in
Pension Value
and Nonqualified
Deferred
Compensation
Earnings
($)(4)
All Other
Compensation
($)(5)
Total ($)
Nicholas K. Akins
Chair of the Board and Chief Executive Officer
2021
1,515,808
9,976,149
2,850,000
461,732
247,526
15,051,215
Julia A. Sloat
Executive Vice President and Chief Financial Officer
2021
602,308
1,628,789
637,350
76,622
58,042
3,003,111
Lisa M. Barton
Executive Vice President and Chief Operating Officer
2021
803,077
2,443,104
890,000
165,173
88,143
4,389,497
David M. Feinberg
Executive Vice President, General Counsel and Secretary
2021
696,669
1,527,000
690,000
93,625
98,652
3,105,946
Charles E. Zebula
Executive Vice President - Portfolio Optimization
2021
579,219
1,323,341
640,000
42,921
71,745
2,657,226
Brian X. Tierney
Former Executive Vice President - Strategy
2021
410,000
2,675,947
732,507
3,818,454
Mark C. McCullough
Former Executive Vice President - Energy Delivery
2021
322,327
1,823,341
1,115,159
3,260,827

1. Amounts in the salary column are composed of executive salaries earned for the year shown, which include 261 days of pay for 2021. This is one day more than the standard 260 calendar work days and holidays in a year.
2. The amounts reported in this column reflect the aggregate grant date fair value calculated in accordance with FASB ASC Topic 718 of the performance shares, restricted stock units (RSUs) and unrestricted shares granted under our Long-Term Incentive Plan. See Note 15 to the Consolidated Financial Statements included in our Form 10-K for the year ended December 31, 2021 for a discussion of the relevant assumptions used in calculating these amounts. The number of shares realized and the value of the performance shares, if any, will depend on the Company’s performance during a 3-year performance period. The potential payout can range from 0 percent to 200 percent of the target number of performance shares, plus any dividend equivalents. The value of the 2021 performance shares will be based on three measures: a Board approved cumulative operating earnings per share measure (Cumulative EPS 50%), a total shareholder return measure (Relative TSR 40%) and a carbon free capacity mix (Carbon Free Capacity 10%). The grant date fair value of the 2021 performance shares that are based on Cumulative EPS was computed in accordance with FASB ASC Topic 718 and was measured based on the closing price of AEP’s common stock on the grant date. The maximum amount payable for the 2021 performance shares that are based on Cumulative EPS measured on the grant date was $7,350,035 for Mr. Akins; $1,200,060 for Ms. Sloat; $1,800,012 for Ms. Barton; $1,125,066 for Mr. Feinberg; $975,000 for Mr. Zebula; $1,500,036 for Mr. Tierney; and $975,000 for Mr. McCullough. The maximum amount payable for the 2021 performance shares that are based on Carbon Free Capacity is equal to $1,470,007 for Mr. Akins; $240,012 for Ms. Sloat; $360,002 for Ms. Barton; $225,013 for Mr. Feinberg; $195,000 for Mr. Zebula; $300,007 for Mr. Tierney; and $195,000 for Mr. McCullough. The grant date fair value of the 2021 performance shares that are based
on Relative TSR is calculated using a Monte-Carlo model as of the date of grant, in accordance with FASB ASC Topic 718. Because the performance shares that are based on Relative TSR are subject to market conditions as defined under FASB ASC Topic 718, they did not have a maximum value on the grant date that differed from the grant date fair values presented in the table. Instead, the maximum value is factored into the calculation of the grant date fair value. The values realized from the 2019 performance shares are included in the Option Exercises and Stock Vested for 2021 table.
3. The amounts shown in this column reflect annual incentive compensation paid for the year shown.
4. The amounts shown in this column are attributable to the increase in the actuarial values of each of the named executive officer’s combined benefits under AEP’s qualified and non-qualified defined benefit pension plans determined using interest rate and mortality assumptions consistent with those used in the Company’s financial statements. Negative values of ($404,033) and ($269,258) for Messrs. Tierney and McCullough, respectfully, were replaced with $0 for the purposes of the Summary Compensation Table. These negative values were caused by their severance from the company during 2021, which resulted in the removal of projected benefits that would have been attributable to eligible earnings for future years under these plans. See the Pension Benefits for 2021 table and related footnotes for additional information. See Note 8 to the Consolidated Financial Statements included in our Form 10-K for the year ended December 31, 2021 for a discussion of the relevant assumptions. None of the named executive officers received preferential or above-market earnings on deferred compensation.
5. Amounts shown in the All Other Compensation column for 2021 include: (a) Company matching contributions to the Company’s Retirement Savings Plan, (b) Company matching contributions to the Company’s Supplemental Retirement Savings Plan, (c) perquisites, (d) vacation payout, and (e) severance benefits. The 2021 values for these items are listed in the following table:
Type
Nicholas K.
Akins
Julia A.
Sloat
Lisa M.
Barton
David M.
Feinberg
Charles E.
Zebula
Brian X. Tierney
Mark C. McCullough
Retirement Savings Plan Match
13,050
13,050
13,050
13,050
13,050
13,050
13,050
Supplemental Retirement Savings Plan Match
212,400
31,272
61,373
56,295
46,665
53,097
35,468
Perquisites
22,076
13,720
13,720
29,307
12,030
6,360
6,804
Vacation Payout
41,000
60,837
Severance
619,000
999,000
Total
$ 247,52
$ 58,04
$ 88,14
$ 98,65
$ 71,74
$ 732,50
$ 1,115,15
6. Ms. Sloat's compensation is provided only for the years in which she was an executive officer of the Company.

Perquisites provided in 2021 included: financial counseling and tax preparation services and, for Mr. Akins, director’s group travel accident insurance premium. Executive officers may also have the occasional personal use of event tickets when such tickets are not being used for business purposes; however, there is no associated incremental cost. From time-to-time executive officers may receive customary gifts from third parties that sponsor events (subject to our policies on conflicts of interest).

Mr. Akins has entered into an Aircraft Time Sharing Agreement that allows him to use our corporate aircraft for personal use for a limited number of hours each year. The Aircraft Time Sharing Agreement requires Mr. Akins to reimburse the Company for the cost of his personal use of corporate aircraft in accordance with limits set forth in Federal Aviation Administration regulations. Mr. Akins reimbursed the Company all incremental costs incurred in connection with personal flights under the Aircraft Timesharing Agreement including fuel, oil, hangar costs, crew travel expenses, catering, landing fees and other incremental airport fees. Accordingly, no value is shown for these amounts in the Summary Compensation Table. If the aircraft flies empty before picking up or after dropping off Mr. Akins at a destination on a personal flight, the cost of the empty flight is included in the incremental cost for which Mr. Akins reimburses the Company. Since AEP aircraft are used predominantly for business purposes, we do not include fixed costs that do not change in amount based on usage, such as depreciation and pilot salaries.

Name of Respondent:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
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
Nicholas K. Akins,Chairman of the Board and Chief Executive Officer
Columbus, Ohio
false
false
2
David M. Feinberg, Vice President and Secretary
Columbus, Ohio
false
false
3
(a)
Scott P. Moore,Vice President
Columbus, Ohio
false
false
4
(b)
Julia A. Sloat,Vice President and Chief Financial Officer
Columbus, Ohio
false
false
5
(c)
Toby L. Thomas,President and Chief Operating Officer
Columbus, Ohio
false
false
6
(d)
Mark C. McCullough, President and Chief Operating Officer
Columbus, Ohio
false
false
7
(e)
Wade A. Smith, Vice President
Columbus, Ohio
false
false
8
Note:  Respondent does not have an Executive Committee


Name of Respondent:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
Q4
FOOTNOTE DATA

(a) Concept: NameAndTitleOfDirector
Elected effective 5/2/2021
(b) Concept: NameAndTitleOfDirector
Elected effective 1/1/2021
(c) Concept: NameAndTitleOfDirector
Elected effective 7/31/2021
(d) Concept: NameAndTitleOfDirector
Resigned effective 7/30/2021
(e) Concept: NameAndTitleOfDirector
Resigned effective 5/1/2021

Name of Respondent:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
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
SPP FERC Electric Tariff Vol. No. 1 Attachment H, Table 1
ER18-194


Name of Respondent:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
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
05/25/2021
ER18-194-000
AEP SPP 2020 Trans FR Update
SPP OATT Att. H-4
2
11/01/2021
ER18-194-000
AEP SPP OATT Projected Revenue Requirement
SPP OATT Att. H-4


Name of Respondent:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
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:

AEP Oklahoma Transmission Company, Inc.
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

05/19/2022
Year/Period of Report

End of:
2021
/
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