21.1720.9517.3521.183.0120.9617.36113.0221.1920.973.0317.3721.203.0420.9817.383.0521.213.0620.9917.39false3.0721.2221.003.0817.4021.233.0921.01117.413.1121.2423.1221.0217.423.1321.25310.0021.033.1417.4321.2643.1521.0417.443.1621.6920.4517.8519.9521.7020.4617.8619.9621.7120.4717.8719.9721.7220.4817.8819.98319514171921.73319514171920.4917.8919.9921.7420.5017.9020.0021.7520.5117.9120.0121.7620.5217.9220.0221.7720.5317.9320.0321.7820.5417.9420.04119.5532419.563519.57419.5839.1539.219.5939.3619.607620461419.61856838777846480019.62919.6366.1106.1119.64116.1220.0820.6525.0107.50018.5019.4525.0220.097.6020.660025.037.7018.5119.4620.10020.6725.047.800018.5219.4725.057.920.11020.68025.060018.5319.4825.0720.14018.5520.690025.08019.4920.17018.5620.7025.0900019.5025.1120.21018.5720.71025.120019.5125.1320.22018.5820.720025.14019.5220.23018.5920.7325.150019.5320.24018.6020.7419.540119.05267236818.4518.95319.062469American Electric PowerService Corporation18.4618.9613222564165937641791519.07663957726918.4718.9744260693485363527410199184619.089501366Southwest Power28518.4818.98213319.09297667718.4918.99730719.101031818.5019.001231.219.111431.318.5119.0130638541719.1218.5219.022019.132218.5319.032419.142818.5419.04117.982452273617.4217.95519693231802384753232207798305611917.9914639767917.4317.96449002354195400033757885555196932318.0032663615417.4417.9764900235442760783118.01717.4517.98818.0217.4617.9991018.0317.4718.001118.041217.4818.011318.0517.4918.02141518.0617.5118.031618.071717.5218.0422.2922.7921.271459.0317.451622.3022.809.0421.286189.0517.4613.0122.312022.8121.2989.0617.4713.029.0722.3222.8221.30913.039.0817.485213.0422.3322.839.0921.311013.059.1117.4922.3422.8421.3213.06119.12942766917.509.13310461203422.3522.8521.3331046120349.1417.5122.3622.909.151373472921.34164523811245227369.1617.523056119522.3722.9121.359.17617.532818880122.384.0021.36717.548621.79113020.5521.057123121.8081320.5621.063291421.8133101520.5724151067521.0735R1121.82163620.5821.08121713721.83131820.59221.0939141921.84340152020.6021.104411621.8521254220.61521.11172264321.867182320.62721.12449192421.87845112520.6321.13461421.882620.641521.142720.751220.0520.761320.0620.771420.0720.781520.0820.791620.0920.801720.1020.8117.0120.1120.8217.0220.1220.8317.0320.1320.8698247795595216982137171230617.0420.1433362693420.2518.6119.0519.5520.2618.6219.0619.5620.2718.6319.0719.5720.2818.6419.0819.5853373312620.2918.6519.0919.5920.3018.6619.1019.60117896430020.3118.6719.1119.612520.3218.68919.1219.6220.3318.691319.1319.631620.3418.702019.1419.642219.1519.65404383943.173.1819.1619.6633878903.1929249074382628419.174043839419.673.212390064881808141593.2219.1819.683.23403.2419.1919.693.2519.2019.703.2613.27219.2119.713.28351.13.2919.2219.72Expenses incurred related to SWEPCO's51.23.31651.319.2319.733.3251.473.3319.2419.74Expenses incurred related to SWEPCO's51.53.3451.6900018.0818.5510017.53000018.0918.56017.5402415106750018.1018.5717.5500018.1118.58017.56000018.1218.59017.57000018.1318.60017.58000018.1418.61017.59000018.1518.62017.61000018.1618.63017.62000018.1718.64017.63021.8921.1517.5518.0521.9021.1617.5618.0621.9121.1717.5718.0721.9221.1817.5818.082121.932221.1917.5918.09Non-power Goods or Services Provided for AffiliateNon-power Goods or Services Provided by Affiliated21.9416.002521.2017.6018.102621.9521.2117.6118.1121.9621.2217.6218.1221.973628666721.2317.6318.1319.1021.984521.2417.6418.1422.3917.05722.40117.068222.415.0117.073924151067522.425.02417.081022.4315.03505.0417.0913022.44605.050017.101405.06722.450100070411762117.118152022.4600309017.12160422.47001006403094525017.13170022.480116000017.1417.017001220.8721.3720.6520.88121.38721.18320.661.2920.89421.391.320.6710520.901.421.40620.681.5720.9121.411.620.6931.720.9221.4272112361920.702320.932.121.432620.712.220.9421.442.3920.7212.41120.95421.451520.73820.9621.46161020.74191219.25769461142544119.6557720.1519.2619.6620.1619.2719.6720.1719.28119.68320.1819.29419.6920.19519.30619.7020.2019.317219.71820.21519.32919.721120.221019.33111519.7320.2319.34122019.741320.2420.3519.7516186.132418.6517196.1420.362619.7619206.1518.662820.3720216.219.773018.6721226.320.0020.3819.78236.418.683246.520.3919.79256.618.6920.40266.719.8018.70276.823.0120.4119.81286.923.0218.7129720.4223.0319.82307.118.72220.43317.1119.83318.73327.220.4419.845337.318.74347.422.497919.1517.6426.0010122.502American Electric Power Service1219.1617.6522.51145719.1717.6622.529319.1817.6711422.5331.1Various5819.1917.68822.54631.29Various19.20717.6931.31022.55831.411OS19.2117.71922.561019.2217.7222.5711N/A19.231217.7322.581319.2417.741418.713245290183112818.183618.15122918.7237.15133018.1918.1637.1818.73143118.201718.1732418.745183318.2118.18193418.7511435559613518.2218.1918.7637154530020218.2318.203818.773918.2418.21264018.784118.2518.2237.0118.794237.0318.2618.23177156254537.0718.8037.0818.292118.242221.4717.1521.2517.0421.4817.1621.2617.0721.492122962121439200152317.1721.2717.0821.5017.1821.2817.0921.5117.1921.2917.1021.5417.2021.3017.1121.551317.2121.3117.1221.56517.2221.3217.13621.57817.2321.3317.141021.581217.2421.3417.151120.9719.8521.9911.1020.7517.6511.2020.9819.8622.0011.3020.7617.6611.420.9919.8722.0120.7711.5017.6721.0019.8822.0211.60020.78017.6811.7021.0119.8922.03011.8020.79017.6911.9021.0219.9022.04020.801217.70021.0319.9122.0512.1020.8117.7112.1121.0419.9222.0612.220.82017.7212.321.0519.9322.070020.8312.4017.73021.0619.9422.0812.50020.84017.7412.61020.45182015725051320.251220.46141320.2620.47151520.2720.481617.001717.0220.28false1717.031920.49Jeffrey W. Hoersdig, Assistant Controller212 East Sixth StreetTulsa, Oklahoma 7411917.041820.2921DEPublic Utility engaged in generating, purchasing, transmitting, distributing and selling electric energy.Qualified to do business in the states of Arkansas, Louisiana, Oklahoma and Texas. The Company owns transmission facilities but provides no electric service at retail in Oklahoma.20.50false17.0511953221.15420.3017.0620.513205517.0723420.3117.0820.522125517.0920.322262720.5317.1072320.33296420.54658C0005372431920.343.35019.756487171295488715019.767398700019.773217935350032759147219.780019.7966240019.80001092143981019.8104276078310757885519.820019.83019.8418.8119.3519.253262555218.8219.36861625019.2618.8319.3723900648819.2718.8419.3819.2818.8519.3919.2918.8619.4019.3018.8719.4114.0019.3118.8819.421.0119.322.0018.8919.4319.3318.9019.4419.3415.0118.3018.7521.3517.1618.3118.7621.3617.1718.3218.7721.3717.1818.3318.7821.3817.1918.3418.7918.5421.3917.2118.3518.8021.4017.2218.3618.8121.4117.2318.3718.8221.4217.242318.3818.8321.4317.254518.3918.8421.4417.2622.5922.0920.8517.7517.7518.2522.6022.1020.8617.7617.7618.2622.6122.1120.8717.7717.7718.2722.6222.1220.8817.7817.7818.2822.6322.1320.8917.7917.7918.2922.6422.1420.9017.8017.8018.3022.6522.1520.9117.8117.8118.3122.6622.1620.9217.8217.8218.3222.6722.1720.9317.8317.8318.3322.6822.183220.9417.8417.8418.3420021.0721.591502003520017.25003621.082921.60022023017.26320Wdesk from Workiva021.0921.610350017.2703724151067521.1021.62003917.28021.114121.6300017.290021.1221.6400017.300021.1321.6500017.310021.1421.6600017.320021.1521.6700017.330021.1621.6800017.34020.55070140029020.56241510675Various900420.570511000020.5801300122415106751320.59Various1520.60155958416202120.611824.002420.621920.632120.642519.452419.952519.8520.35282619.4619.9619.863620.36319.471119.974119.8720.373919119819.4819.98338789019.8820.3819.493557908719.9924151067515360244967208288
Formula Rate uses 13 month average.
19.89120.39219.5010504980226235991320.001935438319.9020.4019.51420.01319514171919.917309838507520.4119.5220.02619.9220.42719.5320.03819.9320.4319.5497251602120.0769905257
Formula Rate uses 13 month average. Production materials and supplies are identified
by a query of the general ledger system.
1700119.941020.4421218.91013815.0218.8519.3517.8501418.9215.0301518.8619.3617.8615.04771618.957815.05018.871719.3746821067946625809917.8715.0618.9668740188015.07018.8819.3817.881918.978102115.0821.12019.398218.8917.8915.0902219.002183015.1122.12219.40018.9017.908415.12019.01238519.4115.1318.9117.912408619.0215.140258718.9219.4217.9202619.0388018.932719.4317.968919.042819.44018.9417.9729037.11012.701518.40012.8038160018.4112.90170018018.420181900018.430000018.44000018.45000018.46018.47118.48518.49622.6922.193321.4517.2718.3522.7022.203521.4617.2818.363722.7122.2121.4717.2918.373922.7222.22801685754121.4817.315463515318.3822.7322.234321.4917.32218.39322.7422.246.00239006488417.3618.4018081415922.75522.2517.37618.4122.7622.2617.3818.4222.7722.27617.3918.43722.789.0122.2817715625458200718114317.4118.449.02
C000537 SW-T BlnktProj Under $3Mferc:ElectricUtilityMember 2021-12-31 C000537 TL332 Wallace Lake, Finney Tap, 1, 2.63, 397.5 ACSR & 1590 2021-01-012021-12-31 C000537 TL182 Patterson, Craig Junction, 1, 26.47, 1272.0  ACSR 2021-01-012021-12-31 C000537 MIDWAY (SW) - LA, Distribution, , 69, 12.47, , 94,  2021-01-012021-12-31 C000537 AEP Service Corporation and Other Affiliated 2021-01-012021-12-31 C000537 BEAN - LA, Distribution, , 138, 12.47, , 40,  2021-12-31 C000537 66-029 Clarksville, Perdue, 1, 7.29, 477.0  ACSR 2021-01-012021-12-31 C000537 TL256 Patterson, Craig Junction, 1, 9.41, 1272.0  ACSR 2021-01-012021-12-31 C000537 66-027 Clarksville, Greggton w/taps to MidVally, 1, 8.49, 2/0 ACSR 2021-01-012021-12-31 C000537 Notes Payable to Associated Companies - Issued 2020-01-012020-12-31 C000537 BLANCHARD - LA, Distribution, , 69, 12.47, , 18.75,  2021-12-31 C000537 State Tax, Income Tax, AR, 2019ferc:ElectricUtilityMember 2021-01-012021-12-31 C000537 TURK - AR, Transmission, , 345, 138, 34.5, 405,  2021-01-012021-12-31 C000537 Deferred Rate Case Expense 2020-12-31 C000537 Corporate Communications, AEPSC 2021-01-012021-12-31 C000537 GAS *Pirkey (2) 2021-01-012021-12-31 C000537 Investment - Mutual Energy, 2021-01-012021-12-31 C000537 NEW HOPE (SW) - TX, Distribution, , 69, 12.47, , 18.75,  2021-12-31 C000537 SOUTH SPRINGDALE - AR, Distribution, , 161, 12.47, , 20,  2021-01-012021-12-31 C000537 SPRINGDALE - AR, Distribution, , 12, 0, 0, 0, STATCAP 2021-12-31 C000537 North Central Wind 2021-01-012021-12-31 C000537 KINGSTON - LA, Distribution, , 69, 24.9, , 28,  2021-01-012021-12-31 C000537 REEVES ROAD - AR, Distribution, , 161, 34.5, , 12,  2021-01-012021-12-31 C000537 MARSHALL 69KV - TX, Distribution, , 69, 13.09, , 20,  2021-01-012021-12-31 C000537 RED POINT - LA, Transmission, , 138, 72.6, 13.2, 42,  2021-01-012021-12-31 C000537 SWEPCO Louisiana AMI meter deployment 2021-01-012021-12-31 C000537 TL181 Northwest Texarkana, Patterson (TLN194:00181B), 2, 18.01, 4/0 CU 2021-01-012021-12-31 C000537 20120523-5024, 41052, ER07-1069-000 2021-01-012021-12-31 C000537 Property Tax, Property Tax, TX, 2021 2020-12-31