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RATE MATTERS (Tables) | 6 Months Ended
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Jun. 30, 2025
Regulated Operations [Abstract] |
Regulated Generating Units to be Retired | The table below summarizes the net book value including CWIP, before cost of removal and materials and supplies, as of June 30, 2025, of generating facilities planned for early retirement:
Plant |  |  |  |  |  | Net Book Value |  | Accelerated Depreciation Regulatory Asset |  |  |  | Cost of Removal Regulatory Liability |  |  | Projected Retirement Date |  |  | Current Authorized Recovery Period |  | Annual Depreciation (a)
|  |  |  |  |  | (dollars in millions)
Northeastern Plant, Unit 3 |  |  |  |  |  | $ | 79.8 |  |  | $ | 204.7 |  |  |  |  | $ | 21.1 |  | (b) |  | 2026 |  |  | (c) |  | $ | 16.7 |
Welsh Plant, Units 1 and 3 |  |  |  |  |  | 300.9 |  |  | 192.7 |  |  |  |  | 57.7 |  | (d) |  | 2028 | (e) |  | (f) |  | 45.9 |
(a)Represents the amount of annual depreciation that has been collected from customers over the prior 12-month period. (b)Includes Northeastern Plant, Unit 4, which was retired in 2016. Removal of Northeastern Plant, Unit 4, will be performed with the removal of Northeastern Plant, Unit 3, after retirement. (c)Northeastern Plant, Unit 3 is currently being recovered through 2040. (d)Includes Welsh Plant, Unit 2, which was retired in 2016. Removal of Welsh Plant, Unit 2, will be performed with the removal of Welsh Plant, Units 1 and 3, after retirement. (e)Represents projected retirement date of coal assets. (f)Unit 1 is being recovered through 2027 in the Louisiana jurisdiction and through 2037 in the Arkansas and Texas jurisdictions. Unit 3 is being recovered through 2032 in the Louisiana jurisdiction and through 2042 in the Arkansas and Texas jurisdictions.
Schedule of Regulatory Assets |
|  | AEP
|  | June 30, |  | December 31,
|  | 2025 |  | 2024
Noncurrent Regulatory Assets |  | (in millions)
Regulatory Assets Currently Earning a Return |  |  |  |
Welsh Plant, Units 1 and 3 Accelerated Depreciation |  | $ | 192.7 |  |  | $ | 168.6 |
Pirkey Plant Accelerated Depreciation |  | 132.6 |  |  | 121.3 |
Unrecovered Winter Storm Fuel Costs (a) |  | 55.9 |  |  | 70.7 |
Storm-Related Costs |  | 53.8 |  |  | 51.0 |
AEP Texas House Bill 5247 |  | 25.0 |  |  | — |
Other Regulatory Assets Pending Final Regulatory Approval |  | 26.5 |  |  | 20.7 |
Regulatory Assets Currently Not Earning a Return |  |  |  |
Plant Retirement Costs – Asset Retirement Obligation Costs (b) |  | 378.3 |  |  | 357.4 |
Storm-Related Costs |  | 310.5 |  |  | 300.8 |
2024-2025 Virginia Biennial Under-Earnings |  | 156.5 |  |  | 78.4 |
NOLC Costs (c) |  | 88.8 |  |  | 92.8 |
Other Regulatory Assets Pending Final Regulatory Approval |  | 107.3 |  |  | 86.3 |
Total Regulatory Assets Pending Final Regulatory Approval | $ | 1,527.9 |  |  | $ | 1,348.0 |
(a)Includes $37 million of unrecovered winter storm fuel costs recorded as a current regulatory asset as of June 30, 2025 and December 31, 2024, respectively. See “February 2021 Severe Winter Weather Impacts in SPP” section below for additional information. (b)See “Federal EPA’s Revised CCR Rule” section of Note 5 for additional information. (c)See “NOLCs in Retail Jurisdictions - IRS PLRs” section of Management’s Discussion and Analysis of Financial Condition and Results of Operations for additional information.
|  | AEP Texas
|  | June 30, |  | December 31,
|  | 2025 |  | 2024
Noncurrent Regulatory Assets |  | (in millions)
Regulatory Assets Currently Earning a Return |  |  |  |
Storm-Related Costs |  | $ | 41.3 |  |  | $ | 41.3 |
AEP Texas House Bill 5247 |  | 25.0 |  |  | — |
Other Regulatory Assets Pending Final Regulatory Approval |  | 1.2 |  |  | — |
Regulatory Assets Currently Not Earning a Return |  |  |  |
Storm-Related Costs |  | 30.9 |  |  | 13.1 |
Deferred Pension and OPEB Costs |  | 21.7 |  |  | 15.6 |
Line Inspection Costs |  | 5.8 |  |  | 5.8 |
Other Regulatory Assets Pending Final Regulatory Approval |  | 1.4 |  |  | 1.3 |
Total Regulatory Assets Pending Final Regulatory Approval |  | $ | 127.3 |  |  | $ | 77.1 |
|  | APCo
|  | June 30, |  | December 31,
|  | 2025 |  | 2024
Noncurrent Regulatory Assets |  | (in millions)
Regulatory Assets Currently Earning a Return |  |  |  |
Other Regulatory Assets Pending Final Regulatory Approval |  | $ | 1.3 |  |  | $ | 1.1 |
Regulatory Assets Currently Not Earning a Return |  |  |  |
Plant Retirement Costs – Asset Retirement Obligation Costs (a) |  | 299.4 |  |  | 282.1 |
Storm-Related Costs – West Virginia |  | 163.2 |  |  | 144.2 |
2024-2025 Virginia Biennial Under-Earnings |  | 156.5 |  |  | 78.4 |
Pension Settlement |  | 17.1 |  |  | 17.8 |
Other Regulatory Assets Pending Final Regulatory Approval |  | 20.9 |  |  | 11.9 |
Total Regulatory Assets Pending Final Regulatory Approval |  | $ | 658.4 |  |  | $ | 535.5 |
(a)See “Federal EPA’s Revised CCR Rule” section of Note 5 for additional information.
|  | I&M
|  | June 30, |  | December 31,
|  | 2025 |  | 2024
Noncurrent Regulatory Assets |  | (in millions)
Regulatory Assets Currently Earning a Return |  |  |  |
Other Regulatory Assets Pending Final Regulatory Approval |  | $ | 6.7 |  |  | $ | 6.4 |
Regulatory Assets Currently Not Earning a Return |  |  |  |
Plant Retirement Costs – Asset Retirement Obligation Costs (a) |  | 76.2 |  |  | 74.0 |
Storm-Related Costs – Indiana |  | 24.0 |  |  | 6.3 |
NOLC Costs – Indiana (b) |  | — |  |  | 26.7 |
Other Regulatory Assets Pending Final Regulatory Approval |  | 1.9 |  |  | 1.6 |
Total Regulatory Assets Pending Final Regulatory Approval |  | $ | 108.8 |  |  | $ | 115.0 |
(a)See “Federal EPA’s Revised CCR Rule” section of Note 5 for additional information. (b)See “NOLCs in Retail Jurisdictions - IRS PLRs” section of Management’s Discussion and Analysis of Financial Condition and Results of Operations for additional information.
|  | OPCo
|  | June 30, |  | December 31,
|  | 2025 |  | 2024
Noncurrent Regulatory Assets |  | (in millions)
Regulatory Assets Currently Earning a Return |  |  |  |
Other Regulatory Assets Pending Final Regulatory Approval |  | $ | 0.7 |  |  | $ | 0.4 |
Regulatory Assets Currently Not Earning a Return |  |  |  |
Other Regulatory Assets Pending Final Regulatory Approval |  | — |  |  | 0.1 |
Total Regulatory Assets Pending Final Regulatory Approval |  | $ | 0.7 |  |  | $ | 0.5 |
|  | PSO
|  | June 30, |  | December 31,
|  | 2025 |  | 2024
Noncurrent Regulatory Assets |  | (in millions)
Regulatory Assets Currently Not Earning a Return |  |  |  |
NOLC Costs (a) |  | $ | 23.2 |  |  | $ | 16.4 |
Storm-Related Costs |  | 21.3 |  |  | 4.9 |
Pension Settlement |  | 7.5 |  |  | 7.8 |
Other Regulatory Assets Pending Final Regulatory Approval |  | 9.5 |  |  | 1.2 |
Total Regulatory Assets Pending Final Regulatory Approval |  | $ | 61.5 |  |  | $ | 30.3 |
(a)See “NOLCs in Retail Jurisdictions - IRS PLRs” section of Management’s Discussion and Analysis of Financial Condition and Results of Operations for additional information.
|  | SWEPCo
|  | June 30, |  | December 31,
|  | 2025 |  | 2024
Noncurrent Regulatory Assets |  | (in millions)
Regulatory Assets Currently Earning a Return |  |  |  |
Welsh Plant, Units 1 and 3 Accelerated Depreciation |  | $ | 192.7 |  |  | $ | 168.6 |
Pirkey Plant Accelerated Depreciation |  | 132.6 |  |  | 121.3 |
Unrecovered Winter Storm Fuel Costs (a) |  | 55.9 |  |  | 70.7 |
Dolet Hills Power Station Accelerated Depreciation (b) |  | 12.0 |  |  | 11.8 |
Other Regulatory Assets Pending Final Regulatory Approval |  | 17.1 |  |  | 10.8 |
Regulatory Assets Currently Not Earning a Return |  |  |  |
NOLC Costs (c) |  | 65.6 |  |  | 49.6 |
Storm-Related Costs - Louisiana, Texas |  | 45.9 |  |  | 39.9 |
Other Regulatory Assets Pending Final Regulatory Approval |  | 18.7 |  |  | 18.7 |
Total Regulatory Assets Pending Final Regulatory Approval |  | $ | 540.5 |  |  | $ | 491.4 |
(a)Includes $37 million of unrecovered winter storm fuel costs recorded as a current regulatory asset as of June 30, 2025 and December 31, 2024, respectively. See “February 2021 Severe Winter Weather Impacts in SPP” section below for additional information. (b)Amounts include the FERC jurisdiction. (c)See “NOLCs in Retail Jurisdictions - IRS PLRs” section of Management’s Discussion and Analysis of Financial Condition and Results of Operations for additional information.
Regulatory Asset, Proposed Securitization Items | The proposed securitized items breakout for the Companies is shown in the table below:
Proposed Securitized Items |  | APCo |  | WPCo |  | Total
|  | (in millions)
Undepreciated Utility Plant Balances of Amos, Mitchell and Mountaineer (as of December 31, 2022) |  | $ | 1,145.5 |  |  | $ | 558.7 |  |  | $ | 1,704.2 |
ENEC Under-Recovery Regulatory Assets (as of February 28, 2023) |  | 174.3 |  |  | 146.8 |  |  | 321.1 |
Forecasted Undepreciated CCR and ELG Investments of Amos, Mitchell and Mountaineer (as of November 30, 2024) |  | 87.6 |  |  | 149.2 |  |  | 236.8 |
Deferred Storm O&M Expense Regulatory Assets (as of June 30, 2024) |  | 115.0 |  |  | 2.9 |  |  | 117.9 |
Upfront Financing Costs |  | 10.1 |  |  | 5.7 |  |  | 15.8 |
Total |  | $ | 1,532.5 |  |  | $ | 863.3 |  |  | $ | 2,395.8 |
Natural Gas Expenses and Purchases of Electricity to be Recovered from Customers | For the time period of February 9, 2021 to February 20, 2021, SWEPCo’s natural gas expenses and purchases of electricity still to be recovered from customers are shown in the table below:
Jurisdiction |  | June 30, 2025 |  | December 31, 2024 |  | Approved Recovery Period |  | Approved Carrying Charge
|  | (in millions) |  |  |  |
Arkansas |  | $ | 29.6 |  |  | $ | 37.2 |  |  | 6 years |  | (a)
Louisiana |  | 55.9 |  |  | 70.6 |  |  | (b) |  | (b)
Texas |  | 58.5 |  |  | 72.7 |  |  | 5 years |  | 1.65%
Total |  | $ | 144.0 |  |  | $ | 180.5 |  |  |  |  |
(a)SWEPCo is permitted to record carrying costs on the unrecovered balance of fuel costs at a weighted-cost of capital approved by the APSC. In August 2024, the APSC issued an order that found SWEPCo had prudently incurred these costs. (b)In March 2021, the LPSC approved a special order granting a temporary modification to the FAC and shortly after SWEPCo began recovery of its Louisiana jurisdictional share of these fuel costs based on a five-year recovery period inclusive of an interim carrying charge equal to the prime rate. The special order states the fuel and purchased power costs incurred will be subject to a future LPSC audit.
FERC Annual Revenue Requirement | The annual revenue requirement increase as a result of the transition to stand-alone treatment of NOLCs for transmission formula rates is shown in the table below:
2021 |  | 2022 |  | 2023 |  | 2024 |  | 2025 |  | Total
(in millions)
$ | 78.3 |  |  | $ | 68.5 |  |  | $ | 60.7 |  |  | $ | 52.1 |  |  | $ | 48.7 |  |  | $ | 308.3 |
Impact To The Statements Of Income Recorded By The Registrants | The table below summarizes the impact to the statements of income recorded by the Registrants in the second quarter of 2025:
|  | AEP |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Total Revenues |  | $ | 270.5 |  |  | $ | 214.3 |  |  | $ | 5.6 |  |  | $ | 10.8 |  |  | $ | — |  |  | $ | 6.4 |  |  | $ | 26.9 |
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation |  | (23.9) |  |  | — |  |  | (17.2) |  |  | — |  |  | — |  |  | — |  |  | — |
Other Operation |  | 53.0 |  |  | — |  |  | 14.8 |  |  | (6.0) |  |  | 0.1 |  |  | 18.8 |  |  | 10.1 |
Income (Loss) Before Income Tax Expense (Benefit) |  | 241.4 |  | 214.3 |  | 8.0 |  | 16.8 |  | (0.1) |  |  | (12.4) |  |  | 16.8
Income Tax Expense (Benefit) |  | (312.8) |  |  | (203.2) |  |  | (21.4) |  |  | (27.8) |  |  | — |  |  | (15.6) |  |  | (38.9) |
Net Income (Loss) |  | 554.2 |  |  | 417.5 |  |  | 29.4 |  |  | 44.6 |  |  | (0.1) |  |  | 3.2 |  |  | 55.7 |
Net Income Attributable to Noncontrolling Interest |  | 55.2 |  |  | 55.2 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Earnings (Loss) Attributable to Common Shareholder |  | $ | 499.0 |  |  | $ | 362.3 |  |  | $ | 29.4 |  |  | $ | 44.6 |  |  | $ | (0.1) |  |  | $ | 3.2 |  |  | $ | 55.7 |

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