11251517.6419.6821.9128163117.6519.6921.923517.6619.7021.933false17.6719.7121.9418202626.117.6819.7221.95<div style="margin-top:12pt;padding-left:22.5pt;text-indent:-22.5pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:15pt">None</span></div>27<div style="margin-top:12pt;padding-left:22.5pt;text-indent:-22.5pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:15pt">None</span></div>26.11<div style="margin-top:12pt;padding-left:22.5pt;text-indent:-22.5pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:15pt">None</span></div><div style="margin-top:12pt;padding-left:22.5pt;text-indent:-22.5pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:15pt">None</span></div>17.6919.7321.96<div style="margin-top:12pt;padding-left:22.5pt;text-indent:-22.5pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:15pt">None</span></div>26.122<div style="margin-top:12pt;padding-left:22.5pt;text-indent:-22.5pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:15pt">None</span></div>33826.13117.7019.7421.97426.142517.7119.7521.9826.15C00053636Wdesk from Workiva26.1642617.7219.7621.9926.25385326.3617.7319.7722.0026.475417.7419.7822.0126.585526.6917.7519.7922.0226.7O1026.81117.7619.8022.0326.912646517.7719.8122.04271327.11417.7819.8222.056727.116827.1217.7919.8322.06316927.137317.8019.8422.0727.1419527.152317.8119.8522.1027.16727.171017.8219.86767727.214917.8319.8727.3151127.42517.8419.8827.51327.617.8519.8927.71517.8619.9027.81727.9171817.8719.91191917.8819.9219.012119.0217.8919.9319.032317.9019.9419.042519.0517.9119.9519.062719.0717.9219.9619.08291617.9319.9719.0919.1017.9419.9819.1119.1217.9519.9919.1317.9620.0019.147778117.9720.01379517.9820.028078117.9920.03982118318.0020.04138418.0120.0585false8618.0220.06878818.0320.07189211.920.2718.641220.2818.6512.112.1120.2918.6612.1212.151959689120.3018.67675100012.220.3118.6812.312.420.3218.6912.512.620.3318.7012.71.120.3418.7112.81.212.920.3518.7220.3618.7320.3718.74220.3818.7520.3918.7620.4018.7720.4118.7820.4218.793.120.4318.803.11123.1220.4418.813733.220.4518.8243.31053.41320.4618.8363.573.620.4718.8483.720.4818.8593.8103.920.4918.86111220.5018.87137920.5118.8814101520.5218.891216141720.5318.901820.5418.91192020.5518.92212220.5618.932320.5718.9424The generation, transmission and sale of electric energy.All operations within the State of Oklahoma.2520.5818.95262720.5918.96212821.120.6018.9729121321.23020.6118.9822143122.115321120.6218.9911.122.2163322.31711.1120.6319.003422.41811.23520.6419.011911.3362111.43720.6519.022211.5382311.620.6619.03392411.74020.6719.042511.84126318.2320.4920.9017.0121.5027419.8718.2420.5028520.9117.0221.5119.882918.2520.5120.9217.033021.5219.893118.2620.5220.9317.0421.533219.9018.2720.533320.9417.0521.5419.913418.2820.5417.063520.9521.5519.923618.2920.5520.9617.0721.563719.9318.3020.563820.9717.0821.5719.943918.3120.5717.094020.9821.5819.954118.3220.5820.9917.1021.594219.9618.3320.594321.0017.1121.6019.974418.3420.6017.1244.0121.6119.9844.0218.3520.6117.1321.6244.0319.9918.3620.6244.0417.1421.6320.0044.0618.3720.6317.1521.6420.0118.3820.6417.1621.6520.0218.3920.6517.1721.6620.0318.4020.6617.1821.6720.0418.4120.6717.1921.6820.0518.4220.6817.2021.69020.0618.4320.69017.21021.70020.07018.44020.70017.22021.7120.08018.45020.71017.2321.72020.0918.4620.72017.2421.7320.1018.4720.7317.2521.74120.1118.4820.748217.26921.7520.1218.49320.751017.2721.7620.1318.50420.7617.2821.772220.142318.51520.7717.2921.782420.1518.52620.782517.3021.7920.1618.53720.7917.3121.8020.1718.54820.8017.3221.8120.1818.55920.8117.3321.8220.1918.561020.8217.3421.8320.2018.571120.8317.3521.8420.211218.581220.8417.361321.8520.221418.591320.8517.3721.861520.2318.601420.861617.38821.8720.241718.6191520.8717.391821.881020.251918.621620.8817.4021.892020.2618.631720.892117.4121.9018.86212218.872318.882412518.8922627318.9028418.912930518.923133618.93718.94818.95918.961018.971118.981218.991319.00231419.01451519.0261619.03781719.0491017.0119.051117.0219.06121317.0319.07141517.0419.081617.0519.091711.11817.0619.101.2191.317.0719.111.417.0819.121.51.617.0919.1322.117.1019.142.217.1119.152.32.417.1219.162.52.717.1319.17false2.817.1419.1817.1519.1917.1619.2017.1719.212317.1819.224517.1919.23617.2019.247817.2119.2591017.2219.262220.0818.4521.092317.235020.092418.4621.102017.24202520.1018.472621.112217.25272320.1118.4821.122817.262420.12292518.4921.1317.273020.1318.503121.1417.285213220.14218.5121.153317.2920.1553418.5221.1617.30356420.1618.533621.1717.31113720.1718.5421.18153817.3220.18391818.5521.1917.334020.1921118.564121.20217.34244220.20318.5721.21284317.355.2420.214418.585.321.2254217.3645620.224318.5945.0121.23217.377345.0220.2344818.6021.24445.0417.38945520.2445.0518.6121.251017.39645.145.061120.25718.6245.0721.2617.401245.0820.261318.6321.2745.0917.411420.2718.6421.281517.421620.2818.6521.2917.431720.2961818.6621.3017.4419120.30418.6721.312017.4521820.3118.6821.3217.46221120.32231418.6921.3317.47241720.3318.7021.34251917.48262120.3418.71821.3517.49272320.35282518.7221.3617.50292720.3618.7321.373017.5120.3718.7421.3817.5220.3818.7521.3917.5320.399.018.7621.4017.549.120.4018.779.1121.4117.559.1220.41118.7821.429.1317.56220.429.1418.7921.4317.579.1520.4318.809.1621.44117.5829.1720.4418.8121.4569.217.5920.4589.318.8221.4617.60119.420.461318.839.521.4717.61159.620.4718.8421.48179.917.62120.4821218.8521.4917.63239020.68249117.8320.699217.849320.709417.8545.1020.7145.1117.8645.1220.723645.1317.8720.7345.1425.117.8845.1525.220.7445.1617.8945.1820.751645.1917.9020.7645.2017.9145.213820.7745.2217.9245.2320.782645.2417.9320.7945.2517.9445.261820.80745.27817.9545.2820.81945.2917.9639.11020.8245.3017.9745.3127.120.8345.32317.98445.3320.8445.35517.9919.120.8545.3664018.0045.37720.8645.38818.012845.3920.8745.4018.022020.8845.4118.03245.42320.8945.4318.04445.4420.9042545.4518.05620.9145.4630718.0645.4720.92845.4918.0792220.931018.081120.941218.0920.95441318.101420.9631.11518.1131.216120.9721723.118.12320.981823.2418.131923.320.99518.1464621.0018.1521.0118.1621.0218.1721.033218.1821.0418.194821.0518.2021.0618.2121.0718.2219.6721.083418.044219.4642.0118.0542.0219.47618.0642.03719.4842.04818.0742.05919.4942.0618.081042.0719.5018.0942.0819.5142.0918.1042.1019.5242.1118.11Jeffrey W. Hoersdig, Assistant Controller42.121019.5318.1242.1319.5442.1418.1342.1519.5542.1618.1442.1719.5618.1519.5718.161266.119.5818.176.1119.596.1218.186.1319.6018.196.1419.616.1518.206.1619.626.1718.2113.16.1819.6313.218.226.1913.319.646.218.236.2119.656.318.246.419.6618.256.519.676.618.266.719.686.818.276.919.6918.287.119.707.1118.297.1219.717.1318.307.1419.7218.317.1519.737.1618.327.1719.747.1818.337.1919.751418.347.219.767.2118.35212 East 6th StreetTulsa, Oklahoma 741197.2219.777.318.367.419.7818.377.519.797.618.387.719.8015.17.818.393115.2357.919.8115.318.4015.419.8218.4119.8318.4219.8418.4319.8518.4419.8619.05417.4219.2719.06517.4319.2819.07717.4419.2919.0817.4519.3019.0917.4619.3119.10817.4719.3219.1117.4819.331219.1217.4919.34319.1317.5019.35419.14517.5119.3619.15617.5219.37719.1617.5319.38819.1717.5419.39919.181017.5519.4019.191117.5619.411219.2017.5719.421319.2117.5819.431419.2211517.5919.44219.2316317.6019.4561719.2417.6119.46718819.2517.6219.4719919.26102017.6319.481119.272117.6419.49122219.2817.65119.5022319.2917.66319.5124419.302517.6719.52519.3126617.6819.5372719.3217.69819.5428919.3317.7019.55291019.341117.7119.561219.3517.721319.571419.3617.7319.582519.3717.7419.59919.381317.7519.601619.3917.761819.61132019.4017.7719.6222419.4124517.7819.6326619.4217.79719.64819.4317.8019.65919.441417.8119.661519.4517.82 C000536 NORTHEASTERN 345 - OK, Transmission, , 345, 138, 34.5, 405,  2022-12-31 C000536 344 - Traverse 2022-01-012022-12-31 C000536 PRATTVILLE - OK, Distribution, , 138, 13.8, , 22.4,  2022-12-31 C000536 ferc:ElectricUtilityMember Purchase Tulsa Hubsite 2022-12-31 C000536 ferc:OtherLicenseAndFeesTaxMember 2022-01-012022-12-31 C000536 DUNCAN BOIS DARC - OK, Distribution, , 13.8, 2.5, , 2.5,  2022-12-31 C000536 TULSA POWER - OK, Transmission, , 138, 13.8, , 70.63,  2022-12-31 C000536 TL81-810B (RADIAL) 21ST STREET TAP,  ,  1 , 0.5, 1, 795 ACSR, , 2022-01-012022-12-31 C000536 GROVE - OK, Transmission, , 161, 138, 13.8, 112,  2022-01-012022-12-31 C000536 TL81-838 CATOOSA, ONETA SUB w/TAP BROKEN ARROW SUB,  3 , 2.5, 2, 954 ACSR and 1026 ACCC, , 2022-01-012022-12-31 C000536 Real & Pers Prop, Property Tax, OK, 18 2022-12-31 C000536 96TH & YALE - OK, Distribution, , 138, 13.8, , 37.3,  2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember PSO Tulsa T TTMP 2022-12-31 C000536 ferc:NitrogenOxideMember Unknown 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember 2360104 FICA, Federal Insurance Tax, , 2022-01-012022-12-31 C000536 TL81-545 NORTHEASTERN POWER STATION, VINITA JUNCTION 138kV LINE,  1 , 0.13, 2, (T2) 636  ACSR AND 397.5 ACSR, , 2022-01-012022-12-31 C000536 HUGO - OK, Transmission, , 138, 13.8, , 22.4,  2022-01-012022-12-31 C000536 BARNSDALL TAP - OK, Transmission, , 34.5, 0, 0, 0, STATCAP 2022-12-31 C000536 TL81-808 TULSA PLANT SUB, SAND SPRINGS SUB,  3 , 2.44, 2, T2 636  ACSR, 0, 0 2022-01-012022-12-31 C000536 CORN COLONY - OK, Distribution, , 34.5, 13.8, , 4.68,  2022-01-012022-12-31 C000536 81ST AND YALE - OK, Distribution, , 138, 13.2, , 74.6,  2022-12-31 C000536 Other (provide details in footnote): 2022-01-012022-12-31 C000536 B. Electric R&D External, 7 Items < $50,000 2022-01-012022-12-31 C000536 Unamortized Credit Line Fees Amortization period through 6/1/2022 2021-12-31 C000536 Diesel NORTHEASTERN 1&2 2022-01-012022-12-31 C000536 Blue Canyon Wind Power LLC (4), OS, 2022-01-012022-12-31 C000536 20210525-5227, 44341, ER18-195-000 2022-01-012022-12-31 C000536 HIGHWAY 20 - OK, Transmission, , 138, 34.5, 13.8, 8.4,  2022-12-31 C000536 344 - Southwest Diesel 2022-01-012022-12-31 C000536 ferc:GenerationStudiesMember 2022-01-012022-12-31 C000536 NOLC Regulatory Asset 2022-12-31 C000536 TL90-906 RIVERSIDE PLANT, WEKIWA SUB,  2 , 18.8, 1, 2267.0  ACAR, 0, 0 2022-01-012022-12-31 C000536 DAWSON - OK, Transmission, , 138, 13.8, , 33.3,  2022-12-31 C000536 TL81-613 PERNELL OGE, PRAIRIE POINT,  1 , 5.2, 1, 1533 ACSR, , 2022-01-012022-12-31 C000536 TL66-610A TOSCO REFINERY, 138KV TAP,  1 , 1.25, 1, 1272 ACSR, , 2022-01-012022-12-31 C000536 LAWTON EASTSIDE - OK, Transmission, , 345, 138, 13.8, 300,  2022-12-31 C000536 State Tax, State Tax, OK, 18 2022-12-31 C000536 SAND SPRINGS 138KV - OK, Transmission, , 138, 66, 13.8, 50,  2022-12-31 C000536 Senior Unsecured Notes, Series D - 4.11%                                          2022-01-012022-12-31 C000536 Rate Schedule 233, ER89-476 2022-01-012022-12-31 C000536 ferc:OtherUtilityMember Other (Specify) 2021-12-31 C000536 TL81-853 ALTUS JUNCTION, SNYDER,  1 , 0.5, 2, T2 397 AND  795 ACSR, 0, 0 2022-01-012022-12-31 C000536 Bus Ops & Perf Assurance, AEPSC 2022-01-012022-12-31 C000536 Other Power Supply Expenses, AEPSC 2022-01-012022-12-31 C000536 LPL 248 2022-01-012022-12-31 C000536 , EPRI Environmental Science 2022-01-012022-12-31 C000536 81ST & GARNETT - OK, Distribution, , 138, 0, 0, 0, STATCAP 2022-01-012022-12-31 C000536 IDABEL-GEORGIA PACIFIC - OK, Distribution, , 69, 13.8, , 10.5,  2022-01-012022-12-31 C000536 GOTEBO - OK, Distribution, , 34.5, 13.2, , 1.68,  2022-01-012022-12-31 C000536 AEPSC (1,3), OS, 2022-01-012022-12-31 C000536 LAWTON WOLF CREEK - OK, Distribution, , 69, 13.8, , 37.3,  2022-12-31 C000536 ZUNIS - OK, Distribution, , 138, 13.8, , 74.6,  2022-12-31 C000536 NORTHEASTERN 3 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember AEP-PSO CVR Distribution Line 2022-12-31 C000536 GAS SOUTHWESTERN 1 - 3 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMemberferc:OtherAdValoremTaxMember 2022-01-012022-12-31 C000536 TL81-539 MCALESTER SOUTH SUB, LONE OAK SUB ,  1 , 0.17, 1, 795 ACSR, 0, 0 2022-01-012022-12-31 C000536 Riverside to S Hudson PSO CI 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember Barnsdall to Tulsa N PSO CI 2022-12-31 C000536 Senior Unsecured Notes, Series E - 3.91%                                          2022-01-012022-12-31 C000536 PORTER HILL - OK, Distribution, , 69, 13.09, , 8.4,  2022-12-31 C000536 TL90-905 VALLIANT SUB, SWEPCO  INTERCONNECT OKLAHOMA-TEXAS STATE LINE,  1 , 0.22, 1, 2x795.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 20100525-5109, 40323, ER10-355-000 2022-01-012022-12-31 C000536 TL81-502 FORD GLASS PLANT SUB, SOUTHEAST SUB,  1 , 2.38, 2, 795 AND 1272 ACSR, 0, 0 2022-01-012022-12-31 C000536 Customer Deposits 2022-01-012022-12-31 C000536 TL90-902 ONETA SUB, RIVERSIDE PLANT,  3 , 2.23, 1, 2267.0  ACAR, 0, 0 2022-01-012022-12-31 C000536 Physical & Cyber Security, AEPSC 2022-01-012022-12-31 C000536 ADSITC STATE C/F-DEF STATE TAX ASSET-L/T 2022-01-012022-12-31 C000536 TUTTLE - OK, Distribution, , 138, 13.09, , 25,  2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember Clint City to Clint Jct PSO CI 2022-12-31 C000536 ROOSEVELT AMOCO - OK, Distribution, , 69, 12.47, , 3,  2022-01-012022-12-31 C000536 TL81-807A (RADIAL) BROKEN ARROW NORTH  TAP, ,  1 , 0.29, 1, 477 ACSR, 0, 0 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember PSO LED Lgt. Upgrade 2022-01-012022-12-31 C000536 TL81-807 ONETA, TULSA SOUTHEAST,  2 , 0.83, 2, T2 397.5 ACSR, 0, 0 2022-01-012022-12-31 C000536 HOLLIS - OK, Distribution, , 34.5, 4.16, , 5.25,  2022-12-31 C000536 Long Term Issuances Costs 2022-01-012022-12-31 C000536 TL81-529 WEKIWA SUB, KEYSTONE (SWPA) SUB,  1 , 0.2, 1, 2 - 1272 ACSR, , 2022-01-012022-12-31 C000536 316.3 - Comanche 2022-01-012022-12-31 C000536 ferc:OtherTaxMember 2022-01-012022-12-31 C000536 LAWTON GORE - OK, Distribution, , 69, 13.2, , 70.6,  2022-12-31 C000536 BPF TRUE UP 2022-12-31 C000536 ELMER JUNCTION - OK, Distribution, , 34.5, 13.2, , 0.75,  2022-12-31 C000536 LAWTON EASTSIDE  - OK, Transmission, , 13.8, 0, 0, 0, Air Core Reactor 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMemberferc:TransmissionPlantMember 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember Other 2022-01-012022-12-31 C000536 PSO's OK Veg Mgmnt O/U Recovery To track the over funded balance for Oklahoma's System Reliability Rider (SRR) in accordance with PSO's Final Order No. PUD 201500208, Order No. 644241. Disposition of Balance should be determined within one year. 2022-01-012022-12-31 C000536 Northeastern 3&4 Diesel 2022-12-31 C000536 SOUTH HUDSON - OK, Distribution, , 138, 13.8, , 40,  2022-01-012022-12-31 C000536 344 - Weleetka 2022-01-012022-12-31 C000536 Local Taxes, Local Tax, OK, 22 2022-12-31 C000536 Real & Pers Prop, Property Tax, WV, 21 2022-01-012022-12-31 C000536 LED TS 203 2022-01-012022-12-31 C000536 Deferred Debt, Unrecognized Equity Return, Depreciation Expense and Property Tax on NE Unit 3 and Comanche Environmental projects placed in service in 2016. Recovery beginning in March 2018 through 2040 in accordance with OCC Cause No. PUD 201700151, Order No. 672864 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember ADSITC STATE C/F-DEF STATE TAX ASSET-L/T 2022-01-012022-12-31 C000536 WEATHERFORD - OK, Distribution, , 69, 13.8, , 22.4,  2022-01-012022-12-31 C000536 TL90-910 CATOOSA SUB, GRADA INTERCONNECT,  2 , 0.3, 1, 2267 ACAR, , 2022-01-012022-12-31 C000536 TL81-513 RIVERSIDE PLANT SUB, EAST 61ST ST,  1 , 0.41, 1, 1272.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 ferc:FederalTaxMember 2022-12-31 C000536 Oklahoma Commission Annual 2022-01-012022-12-31 C000536 ELLIS 4KV SUB - OK, Distribution, , 138, 4.36, , 50,  2022-12-31 C000536 4% 2022-01-012022-12-31 C000536 ferc:OtherUseTaxMember 2021-12-31 C000536 HOBART JUNCTION - OK, Transmission, , 13.8, 0, 0, 0, STATCAP 2022-12-31 C000536 State Tax, State Tax, TX, 21 2021-12-31 C000536 UNREALIZED LOSS ON FORWARD COM 2022-12-31 C000536 Real & Pers Prop, Property Tax, MS, 20 2022-12-31 C000536 State Tax, State Tax, TX, 20 2021-12-31 C000536 ferc:ElectricUtilityMember TRANSMISSION WORK 2022-12-31 C000536 TL81-818 SAND SPRINGS SUB, OG&E INTERCONNECT,  2 , 1.76, 1, 795 ACSR, , 2022-01-012022-12-31 C000536 GS 254 2022-01-012022-12-31 C000536 0 2022-01-012022-12-31 C000536 391 2022-01-012022-12-31 C000536 Real & Pers Prop, Property Tax, LA, 22 2022-01-012022-12-31 C000536 Weleetka Diesel 2022-12-31 C000536 CLINTON SHERMAN I A P - OK, Distribution, , 138, 13.8, , 8.4,  2022-01-012022-12-31 C000536 Requirement Service (RQ), , 2022-01-012022-12-31 C000536 TL81-501B (RADIAL) SOUTHEAST SUB, KENOSHA SUB, , , , , , 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember PSO-D Spare Equipment CI 1 2022-12-31 C000536 Northeastern 1&2 Diesel 2022-12-31 C000536 TL81-637A Headrick Tap, TIPTON ,  1 , 7, 1, 477.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 Companies Billed to or from Respondent 2022-01-012022-12-31 C000536 TL81-808B (RADIAL) UNION AVENUE REFINERY, , , , , , , 2022-01-012022-12-31 C000536 Green Country Energy LLC (2) Cogentrix various OS 2022-01-012022-12-31 C000536 TL81-551 KIMBERLY CLARK, BIXBY 111TH 138kV,  1 , 4.69, 1, 1272.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 TL81-806 SAND SPRINGS SUB, WILDHORSE SUB 138kV, 1, 5.9, 1, T2 477 ACSR, , 2022-01-012022-12-31 C000536 BLOOMFIELD - OK, Distribution, , 13.2, 4.36, , 9.36,  2022-12-31 C000536 Acquired Assets 2022-01-012022-12-31 C000536 370.16 2022-01-012022-12-31 C000536 Tulsa Diesel 2022-01-012022-12-31 C000536 MAYO ROAD - OK, Distribution, , 138, 13.8, , 74.6,  2022-12-31 C000536 ferc:DistributionSubstationMember 2022-12-31 C000536 TULSA SOUTHEAST - OK, Transmission, , 138, 65.92, 13.2, 50,  2022-12-31 C000536 ferc:ElectricUtilityMemberferc:OtherStateTaxMember 2022-01-012022-12-31 C000536 ferc:RealEstateTaxMember 2022-01-012022-12-31 C000536 EAST 41ST STREET - OK, Distribution, , 138, 13.8, , 50,  2022-01-012022-12-31 C000536 MOL 204 2022-01-012022-12-31 C000536 Rate Case Expenses approved for recovery in OCC Final Order No. 672864, Cause No. PUD 201700151, to be amortized over two years, beginning March 2018. 2022-01-012022-12-31 C000536 ferc:SulfurDioxideMember Unknown 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember Wister T-Station Work 2022-12-31 C000536 The Refund for protected Excess DFIT Over/under recovery, In accordance with PUD Orders No.671981 and No.680821. 2022-01-012022-12-31 C000536 Real & Pers Prop, Property Tax, MO, 21 2022-12-31 C000536 YALE AND ARCHER - OK, Distribution, , 13.8, 0, 0, 0, STATCAP 2022-12-31 C000536 346 - Weleetka 2022-01-012022-12-31 C000536 MOUND ROAD - OK, Distribution, , 13.8, 0, 0, 0, STATCAP 2022-01-012022-12-31 C000536 Real & Pers Prop, Property Tax, CO, 21 2021-12-31 C000536 TL81-838 CATOOSA, ONETA SUB w/TAP BROKEN ARROW SUB,  3 , 0.95, 2, 954 ACSR, 0, 0 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember DX Sunray Station PSO D 2022-01-012022-12-31 C000536 PINE AND PEORIA - OK, Distribution, , 138, 13.8, 7.96, 44.8,  2022-12-31 C000536 Local Taxes, Local Tax, OK, 22 2021-12-31 C000536 Non-Roadway Lght 151-163 2022-01-012022-12-31 C000536 TL90-904 VALLIANT, PITTSBURG,  2 , 70.2, 1, 2x795.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 TL66-627 DUKE, RUSSELL (WFEC),  1 , 2.5, 0, 4/0 ACSR, 0, 0 2022-01-012022-12-31 C000536 THOMAS OK REFINING CO. - OK, Distribution, , 69, 13.8, , 10.5,  2022-01-012022-12-31 C000536 LAWTON EASTSIDE - OK, Transmission, , 13.8, 0, 0, 0, Air Core Reactor 2022-01-012022-12-31 C000536 52ND AND DELAWARE - OK, Distribution, , 13.8, 0, 0, 0, STATCAP 2022-12-31 C000536 ZUNIS - OK, Distribution, , 13.8, 0, 0, 0, STATCAP 2022-01-012022-12-31 C000536 20160630-5407, 42551, ER07-1069-000 2022-01-012022-12-31 C000536 AEP Service Corporation and Other Affiliated 2022-01-012022-12-31 C000536 CLINTON CITY - OK, Transmission, , 69, 13.8, , 44.8,  2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember PSO-D Third Party Work Blkt 2022-12-31 C000536 LUGS<100H 2022-01-012022-12-31 C000536 Independent Evaluator Deferral 2022-01-012022-12-31 C000536 Cowboy Wind (4), OS, 2022-01-012022-12-31 C000536 Dawson Station Rehab PSO CI 2022-01-012022-12-31 C000536 TL81-806B (RADIAL) HOMINY TAP , ,  1 , 6.56, 1, 477 ACSR, 0, 0 2022-01-012022-12-31 C000536 Ed-Ci-Psoco-D Cust Mtr 2022-01-012022-12-31 C000536 PSO WV WY MO 2021 RR 2022-01-012022-12-31 C000536 SAYRE - OK, Distribution, , 138, 0, 0, 0, STATCAP 2022-01-012022-12-31 C000536 DUNCAN EASTSIDE - OK, Distribution, , 138, 13.8, , 37.3,  2022-12-31 C000536 Environmental Liabilities 2021-12-31 C000536 WOODLAND (PO) - OK, Distribution, , 13.2, 4.16, , 5,  2022-12-31 C000536 SAYRE - OK, Distribution, , 138, 0, 0, 0, STATCAP 2022-12-31 C000536 CLAYTON - OK, Distribution, , 138, 13.8, , 5.6,  2022-01-012022-12-31 C000536 315.3 - Tulsa 2022-01-012022-12-31 C000536 PRYOR JUNCTION - OK, Transmission, , 138, 69, 13.8, 130,  2022-12-31 C000536 TL81-547 CATOOSA SUB, AMERICAN AIRLINES SUB,  1 , 3.81, 1, 1272.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 Real & Pers Prop, Property Tax, WV, 20 2022-01-012022-12-31 C000536 TL81-828 CATOOSA, NORTHEASTERN POWER STATION,  3 , 0.34, 2, 795.0 ACSR, , 2022-01-012022-12-31 C000536 TL81-542 LAWTON 112TH W GORE, SNYDER,  2 , 19, 1, 795 ACSR, 0, 0 2022-01-012022-12-31 C000536 AFTON CONTL PIPE(CHEROKE - OK, Distribution, , 2.4, 0, 0, 0, STATCAP 2022-01-012022-12-31 C000536 Independent Evaluator Deferral 2022-12-31 C000536 ALLUWE SHELL - OK, Distribution, , 138, 4.3, , 7,  2022-12-31 C000536 Total 161 kV Lines (All), , , 7.61, 1, , 0, 0 2022-01-012022-12-31 C000536 TL90-916 LAWTON EASTSIDE SUB, OG&E INTERCONNECT ARDMORE,  2 , 69.32, 1, 2x954.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 TULSA NORTH 345 - OK, Transmission, , 345, 141.45, 13.8, 560,  2022-01-012022-12-31 C000536 Other State Tax, Other State Tax, OH, 22 2022-01-012022-12-31 C000536 TL81-811 WEKIWA , SAND SPRINGS SUB 138,  1 , 0.1, 1, 1272 ACSR, , 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember PSO Radio Coverage Improvement 2022-01-012022-12-31 C000536 Real & Pers Prop, Property Tax, OK, 22 2021-12-31 C000536 Revolving Credit Facility - 0.96% 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMemberferc:ElectricPlantInServiceMember 2022-01-012022-12-31 C000536 NOLC Reg Asset-Equity Carrying 2021-12-31 C000536 TL66-150 DAWSON, COLLINSVILLE (GRDA),  1 , 6.46, 0, 4/0 ACSR, 0, 0 2022-01-012022-12-31 C000536 OWASSO 88TH & MINGO - OK, Distribution, , 138, 13.8, , 40,  2022-01-012022-12-31 C000536 PSO 2021 Winter Strm Sectizatn 2022-12-31 C000536 AFTON CONTL PIPE(CHEROKE - OK, Distribution, , 2.4, 0, 0, 0, STATCAP 2022-12-31 C000536 TL81-809E (RADIAL)  ORAL ROBERTS TAP, ,  1 , 0.68, 1, 477 ACSR, 0, 0 2022-01-012022-12-31 C000536 HALLIBURTON NO. 2 - OK, Distribution, , 13.2, 2.4, , 4.68,  2022-12-31 C000536 Corp Safety & Health, AEPSC 2022-01-012022-12-31 C000536 ATOKA 138 - OK, Transmission, , 138, 23.9, , 22.4,  2022-01-012022-12-31 C000536 TL81-545B (RADIAL) ALLUWE SHELL TAP, ,  2 , 1.67, 1, 477 ACSR, 0, 0 2022-01-012022-12-31 C000536 ferc:OtherPropertyTaxMember 2022-01-012022-12-31 C000536 GS 212-213 2022-01-012022-12-31 C000536 77TH & MEMORIAL - OK, Distribution, , 13.8, 0, 0, 0, STATCAP 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember PSO-T BlnktProj Under $3M 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember PSO 69kV Line Rebuild 2022-12-31 C000536 GSMTRMSCL 2022-01-012022-12-31 C000536 TL81-502 FORD GLASS PLANT SUB, SOUTHEAST SUB,  1 , 1.83, 1, 795.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 DUNCAN BOIS DARC - OK, Distribution, , 13.8, 2.5, , 2.5,  2022-01-012022-12-31 C000536 LINDSAY TEXAS PIPELINE CO - OK, Distribution, , 138, 4.16, , 12.5,  2022-01-012022-12-31 C000536 ATOKA 138 - OK, Transmission, , 138, 23.9, , 22.4,  2022-12-31 C000536 TL81-566 BROKEN ARROW 81ST STREET SUB, FORD GLASS PLANT SUB 138KV,  1 , 3.06, 1, 795.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 LEHIGH CITY - OK, Distribution, , 138, 23.9, , 30.5,  2022-12-31 C000536 TL66-629 COMANCHE POWER STA, WALTERS JCT,  1 , 1.46, 0, 397 ACSR, 0, 0 2022-01-012022-12-31 C000536 TL81-561 CRAIG JCT., IDABEL,  2 , 0.5, 2, 795 ACSR AND 795 ACSR, , 2022-01-012022-12-31 C000536 TULSA APACHE - OK, Distribution, , 13.2, 4.36, , 4.68,  2022-01-012022-12-31 C000536 WAPANUCKA - OK, Distribution, , 138, 4.36, , 40,  2022-01-012022-12-31 C000536 GAS Riverside 3 & 4 2022-01-012022-12-31 C000536 WEATHERFORD SE - OK, Transmission, , 138, 66, 13.8, 50,  2022-12-31 C000536 MCALESTER CITY - OK, Transmission, , 69, 4.4, , 8.625,  2022-01-012022-12-31 C000536 SFAS 109 Deferred Federal Income Tax 2022-01-012022-12-31 C000536 20111221-5253, 40898, ER11-1069-000 2022-01-012022-12-31 C000536 WHIRLPOOL (PO) - OK, Distribution, , 138, 13.8, , 14,  2022-12-31 C000536 TL81-823C (RADIAL) ALLEN TRANSOK TAP, ,  2 , 8.3, 1, 477.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 GS 252 2022-01-012022-12-31 C000536 SubTotal 138 kV Lines in OK, , , 1506.72, 0, , 0, 0 2022-01-012022-12-31 C000536 STATE UNEMPLOYMENT 2022, Unemployment Tax, OK, 2021-12-31 C000536 FICA 2022, Federal Insurance Tax, , 2021-12-31 C000536 TL81-544 RIVERSIDE PLANT SUB, KIMBERLY CLARK SUB 138kV LINE,  1 , 1.57, 1, 1272 ACSR, 0, 0 2022-01-012022-12-31 C000536 TL81-829 CATOOSA SUB, TULSA NORTH SUB W/TAP CHEROKEE INDUSTRIAL PARK,  1 , 0.36, 1, 636.0 ACSR, 0, 0 2022-01-012022-12-31 C000536 PRSV NOND 2022-01-012022-12-31 C000536 TL81-848 SOUTHWESTERN PLANT, LAWTON EASTSIDE SUB,  2 , 36.8, 1, 795 ACSR, , 2022-01-012022-12-31 C000536 MARY FRANCIS - OK, Distribution, , 13.2, 4.36, , 9.36,  2022-12-31 C000536 LAWTON 53RD & CACHE ROAD - OK, Distribution, , 138, 13.8, , 37.33,  2022-12-31 C000536 Unrealized Gain/Loss on Forward Commitments 2021-12-31 C000536 OKMULGEE CITY - OK, Distribution, , 138, 13.8, , 37.3,  2022-01-012022-12-31 C000536 ferc:FuelTaxMember 2021-12-31 C000536 ferc:DirectPayrollDistributionMember 2022-01-012022-12-31 C000536 Customer Support, AEPSC 2022-01-012022-12-31 C000536 ferc:OtherStateTaxMember 2022-01-012022-12-31 C000536 ELLIS 4KV SUB - OK, Distribution, , 138, 4.36, , 50,  2022-01-012022-12-31 C000536 State Tax, State Tax, Multi, 19 2022-12-31 C000536 Contributions in Aid of Construction 2022-01-012022-12-31 C000536 TL81-528 WEKIWA SUB, TULSA NORTH SUB,  2 , 9, 2, 1272 ACSR and 1272 ACSR/AW, 0, 0 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember Chisholm T TTMP CI 2022-01-012022-12-31 C000536 MOL 214 2022-01-012022-12-31 C000536 ferc:AfterThreeYearsMemberferc:SulfurDioxideMember 2021-12-31 C000536 ferc:ElectricPollutionControlFacilitiesMember 2021-12-31 C000536 LAWTON PAPERBOARD - OK, Transmission, , 138, 13.8, , 37.3,  2022-01-012022-12-31 C000536 ferc:FederalTaxMember 2022-01-012022-12-31 C000536 Sales & Use Tax, Sales And Use Tax, OK, 22 2022-12-31 C000536 Senior Unsecured - Series G - 4.50%                                                2022-12-31 C000536 Over-Recovered PSO BPF 2022-12-31 C000536 DAVIDSON (PO) - OK, Distribution, , 69, 13.09, 4.16, 6.25,  2022-01-012022-12-31 C000536 PRUE - OK, Distribution, , 34.5, 13.2, , 1.68,  2022-01-012022-12-31 C000536 ELK CITY FALCON ROAD - OK, Distribution, , 138, 13.8, , 37.3,  2022-12-31 C000536 ferc:ElectricUtilityMember UNEMPLOYMENT 2022, Unemployment Tax, , 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember Real & Pers Prop, Property Tax, TX, 22 2022-01-012022-12-31 C000536 395 2022-01-012022-12-31 C000536 TL81-531 (RADIAL) HOLLIS TAP, HOLLIS 138kV  LINE  (INTERCONNECT-TX PORTION),  1 , 16, 1, 477.0 ACSR, 0, 0 2022-01-012022-12-31 C000536 TL81-824 MARKHAM FERRY SUB, PRYOR SUB W/TAP LONE STAR,  3 , 0.48, 1, 556.5 ACSR, , 2022-01-012022-12-31 C000536 Oklahoma Local Revolving Credit Facility, Variable Rate 2022-01-012022-12-31 C000536 0ferc:OctoberMember 2022-01-012022-12-31 C000536 Recreational Lght 208 2022-01-012022-12-31 C000536 OAKS 138 - OK, Distribution, , 138, 13.8, , 40,  2022-12-31 C000536 Other State Tax, Other State Tax, OH, 21 2021-12-31 C000536 TL81-844 BARTLESVILLE MOUNDS ROAD SUB, BARTLESVILLE COMANCHE, 1, 0, 2, T2 636 ACSR, 0, 0 2022-01-012022-12-31 C000536 EAST 21ST STREET - OK, Distribution, , 138, 13.8, , 74.6,  2022-12-31 C000536 77TH & MEMORIAL - OK, Distribution, , 13.8, 0, 0, 0, STATCAP 2022-12-31 C000536 HOLLIS - OK, Distribution, , 138, 34.5, , 14,  2022-12-31 C000536 0, 0 2022-01-012022-12-31 C000536 PUD 201100106, Order No. 591185 2021-12-31 C000536 Proceeds on Capital Leaseback 2021-01-012021-12-31 C000536 Capital Contributions from Parent 2022-01-012022-12-31 C000536 TL81-516 VALLIANT SUB, CRAIG JCT SUB,  2 , 0.5, 2, 795 ACSR AND 795 ACSR, , 2022-01-012022-12-31 C000536 TL81-819 SOUTHWESTERN PLANT, HOBART JCT SUB,  1 , 0.1, 2, T2 477 ACSR and 795 ACSR, , 2022-01-012022-12-31 C000536 ferc:NitrogenOxideMember Consent Decree Surrenders 2022-01-012022-12-31 C000536 TL90-921 CLARKSVILLE, OG&E INTERCONNECT,  3 , 0.85, 1, 2156.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember 4% 2021-12-31 C000536 TL90-908 DELAWARE PLANT, KG&E INTERCONNECT KANSAS STATE LINE,  3 , 1.65, 2, 2x795 ACSR, 0, 0 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember ADSITC STATE C/F-DEF STATE TAX ASSET-L/T 2022-12-31 C000536 TL81-811 WEKIWA , SAND SPRINGS SUB 138,  3 , 0.14, 2, 636 ACSR, , 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMemberferc:IncomeTaxMember 2022-01-012022-12-31 C000536 TL81-515 COMANCHE PLANT, LAWTON EASTSIDE SUB,  3 , 5.08, 3, 795.0  ACSR, 795 ACSR, AND 266.8 , 0, 0 2022-01-012022-12-31 C000536 TL81-829 CATOOSA SUB, TULSA NORTH SUB W/TAP CHEROKEE INDUSTRIAL PARK,  3 , 16.6, 2, 556.5 ACSR and 636 ACSR, 0, 0 2022-01-012022-12-31 C000536 Sec Lght 093-145 2022-01-012022-12-31 C000536 TL90-924 ONETA, ONETA ENERGY CENTER (CAL,  2 , 0.14, 1, 2 -1272.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 COMANCHE 2022-01-012022-12-31 C000536 SOUTHWESTERN STATION - OK, Transmission, , 138, 69, 13.8, 50,  2022-12-31 C000536 TL81-847 CRAIG JCT SUB, (SWEPCO) INTERCONNECT ARKANSAS,  1 , 2.25, 2, 1590.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 ALTUS JUNCTION - OK, Transmission, , 34.5, 13.8, , 5,  2022-12-31 C000536 CANADIAN COUNTY NATURAL GAS - OK, Distribution, , 138, 4.1, , 10.5,  2022-12-31 C000536 JENKS - OK, Distribution, , 138, 13.8, , 20,  2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember PSO DACR Distribution Line 2022-01-012022-12-31 C000536 THOMAS (PO) - OK, Distribution, , 69, 13.8, , 5.2,  2022-12-31 C000536 ferc:ElectricUtilityMember DX Sunray Station PSO D 2022-12-31 C000536 TL81-556 TULSA SOUTHEAST SUB, EAST 61ST SUB,  1 , 0.14, 1, 1272.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 ORAL ROBERTS UNIVERSITY - OK, Distribution, , 13.8, 0, 0, 0, STATCAP 2022-01-012022-12-31 C000536 OWASSO 109TH STREET - OK, Distribution, , 138, 13.8, , 45,  2022-12-31 C000536 Senior Unsecured Notes, Series C - 3.05%                                          2022-12-31 C000536 WAPANUCKA - OK, Distribution, , 138, 4.36, , 40,  2022-12-31 C000536 TL81-813 SAND SPRINGS SUB, ARMCO STEEL, 1, 0.14, 2, 1272.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember AEP-PSO CVR Distribution Line 2022-01-012022-12-31 C000536 RIVERVIEW (PO) - OK, Distribution, , 13.2, 4.36, , 3.75,  2022-01-012022-12-31 C000536 TL81-507 (RADIAL) VALLIANT SUB, WEYCO VALLIANT SUB,  2 , 1.65, 1, 795.0 ACSR, 0, 0 2022-01-012022-12-31 C000536 TL81-506A (RADIAL), WEATHERFORD CITY,  1 , 3.35, 1, (T2) 636  ACSR, , 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember Misc Taxes, Miscellaneous Other Tax, OK, 22 2022-01-012022-12-31 C000536 ferc:OtherStateTaxMember 2022-12-31 C000536 CORNVILLE - OK, Transmission, , 138, 70.5, 34.5, 50,  2022-12-31 C000536 Real & Pers Prop, Property Tax, WY, 20 2022-12-31 C000536 PSO WFA RIDER O/U - TRUE UP 2022-01-012022-12-31 C000536 ferc:ElectricUtilityMember ACCUM DITC-STATE-A/C 2550002-MJE 2022-12-31 C000536 TL81-512 ONETA SUB, BROKEN ARROW 81ST STREET SUB,  1 , 0.1, 1, 477.0  ACSR, 0, 0 2022-01-012022-12-31 C000536 ferc:OtherTaxMember 2021-12-31