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PROPERTY, PLANT, AND EQUIPMENT (Tables) | 12 Months Ended
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Dec. 31, 2024
Property, Plant and Equipment [Abstract] |
Schedule of Property, Plant and Equipment | Property, Plant and Equipment is shown functionally on the face of the balance sheets. The following tables include the total plant balances as of December 31, 2024 and 2023:
December 31, 2024 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo |
|  | (in millions) |
Regulated Property, Plant and Equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Generation |  | $ | 24,694.5 |  | (a) | $ | — |  |  | $ | — |  |  | $ | 7,272.6 |  |  | $ | 5,438.5 |  |  | $ | — |  |  | $ | 2,772.4 |  |  | $ | 5,287.5 |  | (a)
Transmission |  | 38,871.9 |  |  | 7,546.2 |  |  | 14,913.4 |  |  | 5,001.5 |  |  | 1,957.8 |  |  | 3,663.9 |  |  | 1,345.3 |  |  | 2,863.8 |  |
Distribution |  | 31,061.9 |  |  | 6,250.5 |  |  | — |  |  | 5,568.5 |  |  | 3,535.0 |  |  | 7,244.0 |  |  | 3,698.8 |  |  | 3,007.1 |  |
Other |  | 6,544.9 |  |  | 1,172.9 |  |  | 515.9 |  |  | 1,023.9 |  |  | 948.3 |  |  | 1,245.3 |  |  | 546.8 |  |  | 682.7 |  |
CWIP |  | 6,321.5 |  | (a) | 1,118.0 |  |  | 1,965.4 |  |  | 742.6 |  |  | 330.1 |  |  | 691.1 |  |  | 378.8 |  |  | 627.3 |  | (a)
Less: Accumulated Depreciation |  | 25,794.0 |  |  | 2,045.7 |  |  | 1,578.5 |  |  | 6,030.9 |  |  | 4,607.0 |  |  | 2,883.0 |  |  | 2,214.7 |  |  | 3,048.5 |  |
Total Regulated Property, Plant and Equipment - Net |  | 81,700.7 |  |  | 14,041.9 |  |  | 15,816.2 |  |  | 13,578.2 |  |  | 7,602.7 |  |  | 9,961.3 |  |  | 6,527.4 |  |  | 9,419.9 |  |
Nonregulated Property, Plant and Equipment - Net |  | 714.9 |  |  | 1.6 |  |  | 0.3 |  |  | 34.3 |  |  | 76.6 |  |  | 9.8 |  |  | 4.9 |  |  | 26.2 |  |
Total Property, Plant and Equipment - Net |  | $ | 82,415.6 |  |  | $ | 14,043.5 |  |  | $ | 15,816.5 |  |  | $ | 13,612.5 |  |  | $ | 7,679.3 |  |  | $ | 9,971.1 |  |  | $ | 6,532.3 |  |  | $ | 9,446.1 |  |
December 31, 2023 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo |
|  | (in millions) |
Regulated Property, Plant and Equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Generation |  | $ | 23,862.7 |  | (a) | $ | — |  |  | $ | — |  |  | $ | 7,041.3 |  |  | $ | 5,588.7 |  |  | $ | — |  |  | $ | 2,695.5 |  |  | $ | 4,790.7 |  | (a)
Transmission |  | 35,903.6 |  |  | 6,812.6 |  |  | 13,723.9 |  |  | 4,711.8 |  |  | 1,906.4 |  |  | 3,395.1 |  |  | 1,228.3 |  |  | 2,660.6 |  |
Distribution |  | 28,989.9 |  |  | 5,798.8 |  |  | — |  |  | 5,176.6 |  |  | 3,254.0 |  |  | 6,839.4 |  |  | 3,450.8 |  |  | 2,824.1 |  |
Other |  | 5,986.1 |  |  | 1,142.9 |  |  | 501.2 |  |  | 943.7 |  |  | 856.8 |  |  | 1,114.4 |  |  | 502.7 |  |  | 544.1 |  |
CWIP |  | 5,480.6 |  | (a) | 904.6 |  |  | 1,563.7 |  |  | 709.2 |  |  | 294.1 |  |  | 654.0 |  |  | 313.7 |  |  | 555.8 |  | (a)
Less: Accumulated Depreciation |  | 24,093.8 |  |  | 1,886.7 |  |  | 1,291.4 |  |  | 5,684.0 |  |  | 4,353.7 |  |  | 2,712.7 |  |  | 2,083.6 |  |  | 2,840.8 |  |
Total Regulated Property, Plant and Equipment - Net |  | 76,129.1 |  |  | 12,772.2 |  |  | 14,497.4 |  |  | 12,898.6 |  |  | 7,546.3 |  |  | 9,290.2 |  |  | 6,107.4 |  |  | 8,534.5 |  |
Nonregulated Property, Plant and Equipment - Net |  | 564.3 |  |  | 1.8 |  |  | 0.3 |  |  | 32.9 |  |  | 82.7 |  |  | 9.7 |  |  | 4.9 |  |  | 23.9 |  |
Total Property, Plant and Equipment - Net |  | $ | 76,693.4 |  |  | $ | 12,774.0 |  |  | $ | 14,497.7 |  |  | $ | 12,931.5 |  |  | $ | 7,629.0 |  |  | $ | 9,299.9 |  |  | $ | 6,112.3 |  |  | $ | 8,558.4 |  |
(a)AEP and SWEPCo’s regulated generation and regulated CWIP include amounts related to SWEPCo’s Arkansas jurisdictional share of the Turk Plant.
Schedule of Depreciation, Depletion and Amortization - Regulated | The following tables provide total regulated annual composite depreciation rates and depreciable lives for the Registrants:
AEP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2024 |  | 2023 |  | 2022
Functional Class of Property |  | Annual Composite Depreciation Rate Ranges |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate Ranges |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate Ranges |  | Depreciable Life Ranges
|  |  |  |  |  | (in years) |  |  |  |  |  | (in years) |  |  |  |  |  | (in years)
Generation |  | 2.7% | - | 4.9% |  | 20 | - | 162 |  | 2.7% | - | 4.7% |  | 20 | - | 162 |  | 2.7% | - | 7.6% |  | 20 | - | 132
Transmission |  | 2.1% | - | 2.7% |  | 15 | - | 79 |  | 2.0% | - | 2.7% |  | 15 | - | 78 |  | 2.0% | - | 2.7% |  | 24 | - | 75
Distribution |  | 2.8% | - | 3.5% |  | 7 | - | 85 |  | 2.9% | - | 3.6% |  | 7 | - | 85 |  | 2.7% | - | 3.6% |  | 7 | - | 78
Other |  | 3.0% | - | 8.9% |  | 5 | - | 75 |  | 3.8% | - | 9.1% |  | 5 | - | 75 |  | 3.1% | - | 14.4% |  | 5 | - | 75
AEP Texas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2024 |  | 2023 |  | 2022
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Transmission |  | 2.2% |  | 50 | - | 79 |  | 2.2% |  | 50 | - | 75 |  | 2.2% |  | 50 | - | 75
Distribution |  | 2.8% |  | 15 | - | 74 |  | 2.9% |  | 7 | - | 70 |  | 2.9% |  | 7 | - | 70
Other |  | 5.9% |  | 5 | - | 54 |  | 6.0% |  | 5 | - | 50 |  | 6.2% |  | 5 | - | 50
AEPTCo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2024 |  | 2023 |  | 2022
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Transmission |  | 2.7% |  | 24 | - | 78 |  | 2.6% |  | 24 | - | 78 |  | 2.6% |  | 24 | - | 75
Other |  | 7.1% |  | 5 | - | 58 |  | 7.0% |  | 5 | - | 58 |  | 6.6% |  | 5 | - | 56
APCo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2024 |  | 2023 |  | 2022
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Generation |  | 3.2% |  | 35 | - | 162 |  | 3.3% |  | 35 | - | 162 |  | 3.6% |  | 35 | - | 118
Transmission |  | 2.3% |  | 15 | - | 78 |  | 2.3% |  | 15 | - | 78 |  | 2.2% |  | 24 | - | 75
Distribution |  | 3.5% |  | 12 | - | 60 |  | 3.6% |  | 12 | - | 60 |  | 3.6% |  | 12 | - | 57
Other |  | 6.8% |  | 5 | - | 55 |  | 7.4% |  | 5 | - | 55 |  | 7.3% |  | 5 | - | 55
I&M |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2024 |  | 2023 |  | 2022
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Generation |  | 4.9% |  | 20 | - | 132 |  | 4.7% |  | 20 | - | 132 |  | 4.9% |  | 20 | - | 132
Transmission |  | 2.6% |  | 44 | - | 67 |  | 2.5% |  | 44 | - | 67 |  | 2.5% |  | 44 | - | 67
Distribution |  | 2.8% |  | 15 | - | 76 |  | 2.9% |  | 14 | - | 71 |  | 3.1% |  | 14 | - | 71
Other |  | 8.9% |  | 5 | - | 45 |  | 9.1% |  | 5 | - | 45 |  | 10.1% |  | 5 | - | 45
OPCo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2024 |  | 2023 |  | 2022
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Transmission |  | 2.3% |  | 39 | - | 60 |  | 2.3% |  | 39 | - | 60 |  | 2.3% |  | 39 | - | 60
Distribution |  | 3.1% |  | 11 | - | 70 |  | 3.1% |  | 11 | - | 70 |  | 2.7% |  | 11 | - | 70
Other |  | 5.9% |  | 5 | - | 50 |  | 6.4% |  | 5 | - | 50 |  | 6.1% |  | 5 | - | 50
PSO |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2024 |  | 2023 |  | 2022
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Generation |  | 3.3% |  | 30 | - | 78 |  | 3.0% |  | 25 | - | 75 |  | 3.1% |  | 30 | - | 75
Transmission |  | 2.6% |  | 41 | - | 75 |  | 2.6% |  | 41 | - | 75 |  | 2.5% |  | 42 | - | 75
Distribution |  | 2.8% |  | 15 | - | 85 |  | 2.9% |  | 15 | - | 85 |  | 2.9% |  | 15 | - | 78
Other |  | 6.6% |  | 5 | - | 58 |  | 6.8% |  | 5 | - | 58 |  | 6.8% |  | 5 | - | 56
SWEPCo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2024 |  | 2023 |  | 2022
Functional Class of Property |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate |  | Depreciable Life Ranges
|  |  |  | (in years) |  |  |  | (in years) |  |  |  | (in years)
Generation |  | 3.7% |  | 30 | - | 65 |  | 2.9% |  | 30 | - | 65 |  | 2.7% |  | 30 | - | 65
Transmission |  | 2.2% |  | 46 | - | 70 |  | 2.2% |  | 46 | - | 70 |  | 2.3% |  | 44 | - | 70
Distribution |  | 2.9% |  | 7 | - | 75 |  | 2.9% |  | 7 | - | 75 |  | 2.9% |  | 15 | - | 75
Other |  | 6.7% |  | 5 | - | 58 |  | 8.5% |  | 5 | - | 58 |  | 9.0% |  | 5 | - | 57
Schedule of Depreciation, Depletion and Amortization - Unregulated | The following table includes the nonregulated annual composite depreciation rate ranges and nonregulated depreciable life ranges for AEP. With the exception of I&M, the Registrants' depreciation rate ranges and depreciable life ranges are not meaningful for nonregulated property for 2024, 2023 and 2022.
|  | 2024 |  | 2023 |  | 2022
Functional Class of Property |  | Annual Composite Depreciation Rate Ranges (a) |  | Depreciable Life Ranges (a) |  | Annual Composite Depreciation Rate Ranges |  | Depreciable Life Ranges |  | Annual Composite Depreciation Rate Ranges |  | Depreciable Life Ranges
|  |  |  |  |  | (in years) |  |  |  |  |  | (in years) |  |  |  |  |  | (in years)
Generation |  | 1.8% | - | 6.0% |  | 39 | - | 61 |  | 4.8% | - | 6.7% |  | 10 | - | 61 |  | 3.8% | - | 8.7% |  | 3 | - | 61
Transmission |  | NA |  | NA |  | 2.5% |  | 62 |  | 2.8% |  | 10 | - | 62
Distribution |  | NA |  | NA |  | NA |  | NA |  | NA |  | NA
Other |  | 9.7% |  | 5 | - | 35 |  | 10.6% |  | 5 | - | 35 |  | 25.2% |  | 5 | - | 35
(a) I&M's annual composite depreciation rate for Generation property is 1.8% and the depreciable life is 39 years. NA Not applicable.
Schedule of Asset Retirement Obligation (ARO) | The following is a reconciliation of the 2024 and 2023 aggregate carrying amounts of ARO by Registrant:
Company |  | ARO as of December 31, 2023 |  | Accretion Expense |  | Liabilities Incurred |  | Liabilities Settled |  | Revisions in Cash Flow Estimates (a) |  | ARO as of December 31, 2024
|  | (in millions)
AEP(b)(c)(d)(e)(f) |  | $ | 3,031.2 |  |  | $ | 140.1 |  |  | $ | 612.4 |  |  | $ | (102.4) |  |  | $ | (69.6) |  |  | $ | 3,611.7 |
AEP Texas (e) |  | 4.5 |  |  | 0.2 |  |  | — |  |  | (0.8) |  |  | — |  |  | 3.9 |
APCo (b)(e)(f) |  | 464.0 |  |  | 27.7 |  |  | 247.1 |  |  | (18.1) |  |  | 81.0 |  |  | 801.7 |
I&M (b)(c)(e) |  | 2,106.0 |  |  | 80.2 |  |  | 85.7 |  |  | (2.2) |  |  | (175.9) |  |  | 2,093.8 |
OPCo (b)(e) |  | 2.1 |  |  | 1.4 |  |  | 52.9 |  |  | (0.1) |  |  | — |  |  | 56.3 |
PSO (b)(e)(f) |  | 84.2 |  |  | 5.8 |  |  | 33.7 |  |  | (1.9) |  |  | — |  |  | 121.8 |
SWEPCo (b)(d)(e)(f) |  | 281.6 |  |  | 16.2 |  |  | 30.2 |  |  | (69.2) |  |  | 19.9 |  |  | 278.7 |
Company |  | ARO as of December 31, 2022 |  | Accretion Expense |  | Liabilities Incurred |  | Liabilities Settled |  | Revisions in Cash Flow Estimates (a) |  | ARO as of December 31, 2023
|  | (in millions)
AEP (b)(c)(d)(e)(f) |  | $ | 2,943.6 |  |  | $ | 116.3 |  |  | $ | 38.9 |  |  | $ | (130.6) |  |  | $ | 63.0 |  |  | $ | 3,031.2 |
AEP Texas (e) |  | 4.5 |  |  | 0.2 |  |  | — |  |  | (0.3) |  |  | 0.1 |  |  | 4.5 |
APCo (b)(e)(f) |  | 427.7 |  |  | 16.8 |  |  | 16.1 |  |  | (23.1) |  |  | 26.5 |  |  | 464.0 |
I&M (b)(c)(e) |  | 2,028.1 |  |  | 74.8 |  |  | 4.8 |  |  | (3.7) |  |  | 2.0 |  |  | 2,106.0 |
OPCo (e) |  | 5.0 |  |  | 0.2 |  |  | — |  |  | (3.1) |  |  | — |  |  | 2.1 |
PSO (b)(e)(f) |  | 75.7 |  |  | 4.7 |  |  | 5.8 |  |  | (1.2) |  |  | (0.8) |  |  | 84.2 |
SWEPCo (b)(d)(e)(f) |  | 280.9 |  |  | 13.7 |  |  | 7.5 |  |  | (55.0) |  |  | 34.5 |  |  | 281.6 |
(a)Unless discussed above, primarily related to ash ponds, landfills and mine reclamation, generally due to changes in estimated closure area, volumes and/or unit costs. (b)Includes ARO related to ash disposal facilities. (c)Includes ARO related to nuclear decommissioning costs for the Cook Plant. (d)Includes ARO related to Sabine and DHLC. (e)Includes ARO related to asbestos removal. (f)Includes ARO related to renewables.
Schedule of Allowance For Equity Funds Used During Construction | The Registrants’ amounts of Allowance for Equity Funds Used During Construction are summarized in the following table:
|  | Years Ended December 31,
Company |  | 2024 |  | 2023 |  | 2022
|  | (in millions)
AEP |  | $ | 211.0 |  |  | $ | 174.9 |  |  | $ | 133.7 |
AEP Texas |  | 45.9 |  |  | 28.4 |  |  | 19.7 |
AEPTCo |  | 89.4 |  |  | 83.2 |  |  | 70.7 |
APCo |  | 16.1 |  |  | 11.9 |  |  | 11.7 |
I&M |  | 13.3 |  |  | 10.9 |  |  | 9.8 |
OPCo |  | 23.4 |  |  | 17.1 |  |  | 13.9 |
PSO |  | 7.4 |  |  | 8.4 |  |  | 1.5 |
SWEPCo |  | 13.5 |  |  | 11.5 |  |  | 4.9 |
Schedule of Allowance For Borrowed Funds Used During Construction | The Registrants’ amounts of allowance for borrowed funds used during construction, including capitalized interest, are summarized in the following table:
|  | Years Ended December 31,
Company |  | 2024 |  | 2023 |  | 2022
|  | (in millions)
AEP |  | $ | 129.8 |  |  | $ | 117.3 |  |  | $ | 63.0 |
AEP Texas |  | 30.7 |  |  | 23.4 |  |  | 11.5 |
AEPTCo |  | 33.7 |  |  | 31.4 |  |  | 22.4 |
APCo |  | 10.5 |  |  | 14.1 |  |  | 6.5 |
I&M |  | 9.2 |  |  | 7.7 |  |  | 5.7 |
OPCo |  | 12.8 |  |  | 14.0 |  |  | 6.7 |
PSO |  | 9.7 |  |  | 5.2 |  |  | 2.7 |
SWEPCo |  | 15.1 |  |  | 9.8 |  |  | 4.3 |
Schedule of Jointly-owned Electric Facilities | Each Registrant’s proportionate share of the operating costs associated with these facilities is included in its statements of income and the investments and accumulated depreciation are reflected in its balance sheets under Property, Plant and Equipment as follows:
|  |  |  |  | Registrant’s Share as of December 31, 2024
| Fuel Type |  | Percent of Ownership |  | Utility Plant in Service |  | Construction Work in Progress |  | Accumulated Depreciation
|  |  |  |  | (in millions)
AEP |  |  |  |  |  |  |  |  |
Flint Creek Generating Station, Unit 1 (a) | Coal |  | 50.0 | % |  | $ | 404.1 |  |  | $ | 3.4 |  |  | $ | 188.8 |
Turk Generating Plant (a) | Coal |  | 73.3 | % |  | 1,517.0 |  |  | 1.2 |  |  | 350.2 |
Total |  |  |  |  | $ | 1,921.1 |  |  | $ | 4.6 |  |  | $ | 539.0 |
I&M |  |  |  |  |  |  |  |  |
Rockport Generating Plant (b)(c) | Coal |  | 50.0 | % |  | $ | 1,345.0 |  |  | $ | 10.9 |  |  | $ | 1,181.8 |
PSO |  |  |  |  |  |  |  |  |
North Central Wind Energy Facilities (d)(e) | Wind |  | 45.5 | % |  | $ | 912.3 |  |  | $ | 1.0 |  |  | $ | 77.6 |
SWEPCo |  |  |  |  |  |  |  |  |
Flint Creek Generating Station, Unit 1 (a) | Coal |  | 50.0 | % |  | $ | 404.1 |  |  | $ | 3.4 |  |  | $ | 188.8 |
Turk Generating Plant (a) | Coal |  | 73.3 | % |  | 1,517.0 |  |  | 1.2 |  |  | 350.2 |
North Central Wind Energy Facilities (d)(e) | Wind |  | 54.5 | % |  | 1,093.5 |  |  | 1.2 |  |  | 98.1 |
Total |  |  |  |  | $ | 3,014.6 |  |  | $ | 5.8 |  |  | $ | 637.1 |
|  |  |  |  | Registrant’s Share as of December 31, 2023
| Fuel Type |  | Percent of Ownership |  | Utility Plant in Service |  | Construction Work in Progress |  | Accumulated Depreciation
|  |  |  |  | (in millions)
AEP |  |  |  |  |  |  |  |  |
Flint Creek Generating Station, Unit 1 (a) | Coal |  | 50.0 | % |  | $ | 402.8 |  |  | $ | 1.6 |  |  | $ | 167.5 |
Turk Generating Plant (a) | Coal |  | 73.3 | % |  | 1,504.0 |  |  | 10.1 |  |  | 323.3 |
Total |  |  |  |  | $ | 1,906.8 |  |  | $ | 11.7 |  |  | $ | 490.8 |
I&M |  |  |  |  |  |  |  |  |
Rockport Generating Plant (b)(c) | Coal |  | 50.0 | % |  | $ | 1,341.4 |  |  | $ | 7.9 |  |  | $ | 1,018.9 |
PSO |  |  |  |  |  |  |  |  |
North Central Wind Energy Facilities (d)(e) | Wind |  | 45.5 | % |  | $ | 906.3 |  |  | $ | 2.4 |  |  | $ | 54.1 |
SWEPCo |  |  |  |  |  |  |  |  |
Flint Creek Generating Station, Unit 1 (a) | Coal |  | 50.0 | % |  | $ | 402.8 |  |  | $ | 1.6 |  |  | $ | 167.5 |
Turk Generating Plant (a) | Coal |  | 73.3 | % |  | 1,504.0 |  |  | 10.1 |  |  | 323.3 |
North Central Wind Energy Facilities (d)(e) | Wind |  | 54.5 | % |  | 1,086.3 |  |  | 2.9 |  |  | 67.9 |
Total |  |  |  |  | $ | 2,993.1 |  |  | $ | 14.6 |  |  | $ | 558.7 |
(a)Operated by SWEPCo. (b)Operated by I&M. (c)AEGCo owns 50%. (d)Operated by PSO. (e)PSO and SWEPCo own undivided interests of 45.5% and 54.5% of the NCWF, respectively.

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