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COMMITMENTS, GUARANTEES AND CONTINGENCIES (Tables) | 12 Months Ended
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Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Contractual Commitments | In accordance with the accounting guidance for “Commitments”, the following tables summarize the Registrants’ actual contractual commitments as of December 31, 2024:
Contractual Commitments - AEP |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Fuel Purchase Contracts (a) |  | $ | 1,002.0 |  |  | $ | 942.0 |  |  | $ | 475.7 |  |  | $ | 368.3 |  |  | $ | 2,788.0 |
Energy and Capacity Purchase Contracts |  | 192.8 |  |  | 384.0 |  |  | 334.3 |  |  | 464.0 |  |  | 1,375.1 |
Total |  | $ | 1,194.8 |  |  | $ | 1,326.0 |  |  | $ | 810.0 |  |  | $ | 832.3 |  |  | $ | 4,163.1 |
Contractual Commitments - APCo |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Fuel Purchase Contracts (a) |  | $ | 506.7 |  |  | $ | 328.6 |  |  | $ | 167.0 |  |  | $ | 96.0 |  |  | $ | 1,098.3 |
Energy and Capacity Purchase Contracts |  | 40.4 |  |  | 79.9 |  |  | 48.0 |  |  | 52.2 |  |  | 220.5 |
Total |  | $ | 547.1 |  |  | $ | 408.5 |  |  | $ | 215.0 |  |  | $ | 148.2 |  |  | $ | 1,318.8 |
Contractual Commitments - I&M |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Fuel Purchase Contracts (a) |  | $ | 151.5 |  |  | $ | 346.6 |  |  | $ | 220.7 |  |  | $ | 263.9 |  |  | $ | 982.7 |
Energy and Capacity Purchase Contracts |  | 119.9 |  |  | 236.2 |  |  | 231.7 |  |  | 321.5 |  |  | 909.3 |
Total |  | $ | 271.4 |  |  | $ | 582.8 |  |  | $ | 452.4 |  |  | $ | 585.4 |  |  | $ | 1,892.0 |
Contractual Commitments - OPCo |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Energy and Capacity Purchase Contracts |  | $ | 33.2 |  |  | $ | 64.2 |  |  | $ | 66.3 |  |  | $ | 69.5 |  |  | $ | 233.2 |
Contractual Commitments - PSO |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Fuel Purchase Contracts (a) |  | $ | 27.4 |  |  | $ | 17.0 |  |  | $ | — |  |  | $ | — |  |  | $ | 44.4 |
Energy and Capacity Purchase Contracts |  | 62.9 |  |  | 123.6 |  |  | 62.4 |  |  | 19.7 |  |  | 268.6 |
Total |  | $ | 90.3 |  |  | $ | 140.6 |  |  | $ | 62.4 |  |  | $ | 19.7 |  |  | $ | 313.0 |
Contractual Commitments - SWEPCo |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Fuel Purchase Contracts (a) |  | $ | 89.4 |  |  | $ | 46.6 |  |  | $ | — |  |  | $ | — |  |  | $ | 136.0 |
Energy and Capacity Purchase Contracts |  | 11.5 |  |  | 13.2 |  |  | — |  |  | — |  |  | 24.7 |
Total |  | $ | 100.9 |  |  | $ | 59.8 |  |  | $ | — |  |  | $ | — |  |  | $ | 160.7 |
(a)Represents contractual commitments to purchase coal, natural gas, uranium and other consumables as fuel for electric generation along with related transportation of the fuel.
Maximum Future Payments for Letters of Credit Issued Under the Uncommitted Facilities | The Registrants’ maximum future payments for letters of credit issued under the uncommitted facilities as of December 31, 2024 were as follows:
Company |  | Amount |  | Maturity
|  | (in millions) |  |
AEP |  | $ | 238.0 |  |  | January 2025 to November 2025
AEP Texas |  | 1.8 |  |  | July 2025
Schedule of Asset Retirement Obligations | AEP evaluated the applicability of the rule to current and former plant sites and recorded incremental ARO in the second quarter of 2024, as shown in the table below, based on initial cost estimates primarily reflecting compliance with the rule through closure in place and future groundwater monitoring requirements pursuant to the revised CCR Rule.
Registrant |  | Increase in ARO |  | Increase in Generation Property (a) |  | Increase in Regulatory Assets (b) |  | Charged to Operating Expenses (c)
|  | (in millions) |  |
APCo |  | $ | 312.2 |  |  | $ | 75.6 |  |  | $ | 236.6 |  |  | $ | — |
I&M |  | 85.7 |  |  | — |  |  | 72.3 |  |  | 13.4 |
OPCo |  | 52.9 |  |  | — |  |  | — |  |  | 52.9 |
PSO |  | 33.7 |  |  | 33.7 |  |  | — |  |  | — |
SWEPCo |  | 23.8 |  |  | 23.8 |  |  | — |  |  | — |
Non-Registrants |  | 166.1 |  |  | 43.8 |  |  | 46.1 |  |  | 76.2 |
Total |  | $ | 674.4 |  |  | $ | 176.9 |  |  | $ | 355.0 |  |  | $ | 142.5 |
(a)ARO is related to a legacy CCR surface impoundment or CCR management unit at an operating generation facility. (b)ARO is related to a legacy CCR surface impoundment or CCR management unit at a retired generation facility and recognition of a regulatory asset in accordance with the accounting guidance for “Regulated Operations” is supported. (c)ARO is related to a legacy CCR surface impoundment or CCR management unit and recognition of a regulatory asset in accordance with the accounting guidance for “Regulated Operations” is not yet supported.

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