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LEASES | 12 Months Ended
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Dec. 31, 2024
Leases [Abstract] |
LEASES | LEASES The disclosures in this note apply to all Registrants unless indicated otherwise. The Registrants lease property, plant and equipment including, but not limited to, fleet, information technology and real estate leases. These leases require payments of non-lease components, including related property taxes, operating and maintenance costs. AEP does not separate non-lease components from associated lease components. Many of these leases have purchase or renewal options. Leases not renewed are often replaced by other leases. Options to renew or purchase a lease are included in the measurement of lease assets and liabilities if it is reasonably certain the Registrant will exercise the option. Lease obligations are measured using the discount rate implicit in the lease when that rate is readily determinable. AEP has visibility into the rate implicit in the lease when assets are leased from selected financial institutions under master leasing agreements. When the implicit rate is not readily determinable, the Registrants measure their lease obligation using their estimated secured incremental borrowing rate. Incremental borrowing rates are comprised of an underlying risk-free rate and a secured credit spread relative to the lessee on a matched maturity basis. Operating lease rentals and finance lease amortization costs are generally charged to Other Operation and Maintenance expense in accordance with rate-making treatment for regulated operations. The amortization costs related to the Rockport finance lease, which ended in December 2022, were charged to Depreciation and Amortization. Interest on finance lease liabilities is generally charged to Interest Expense. Lease costs associated with capital projects are included in Property, Plant and Equipment on the balance sheets. For regulated operations with finance leases, a finance lease asset and offsetting liability are recorded at the present value of the remaining lease payments for each reporting period. Finance leases for nonregulated property are accounted for as if the assets were owned and financed. The components of rental costs were as follows:
Year Ended December 31, 2024 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Operating Lease Cost |  | $ | 145.9 |  |  | $ | 32.3 |  |  | $ | 1.3 |  |  | $ | 18.4 |  |  | $ | 19.6 |  |  | $ | 16.8 |  |  | $ | 13.5 |  |  | $ | 17.8 |
Finance Lease Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Right-of-Use Assets |  | 63.7 |  |  | 7.5 |  |  | — |  |  | 8.7 |  |  | 7.2 |  |  | 5.3 |  |  | 3.3 |  |  | 13.0 |
Interest on Lease Liabilities |  | 11.9 |  |  | 1.4 |  |  | — |  |  | 1.5 |  |  | 2.2 |  |  | 0.9 |  |  | 0.7 |  |  | 1.6 |
Total Lease Rental Costs (a) |  | $ | 221.5 |  |  | $ | 41.2 |  |  | $ | 1.3 |  |  | $ | 28.6 |  |  | $ | 29.0 |  |  | $ | 23.0 |  |  | $ | 17.5 |  |  | $ | 32.4 |
Year Ended December 31, 2023 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Operating Lease Cost |  | $ | 149.9 |  |  | $ | 34.0 |  |  | $ | 1.3 |  |  | $ | 18.5 |  |  | $ | 19.6 |  |  | $ | 17.3 |  |  | $ | 13.5 |  |  | $ | 17.5 |
Finance Lease Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Right-of-Use Assets |  | 69.1 |  |  | 7.4 |  |  | — |  |  | 8.3 |  |  | 7.3 |  |  | 5.0 |  |  | 3.3 |  |  | 19.9 |
Interest on Lease Liabilities |  | 11.9 |  |  | 1.4 |  |  | — |  |  | 1.8 |  |  | 2.5 |  |  | 0.9 |  |  | 0.7 |  |  | 1.4 |
Total Lease Rental Costs (a) |  | $ | 230.9 |  |  | $ | 42.8 |  |  | $ | 1.3 |  |  | $ | 28.6 |  |  | $ | 29.4 |  |  | $ | 23.2 |  |  | $ | 17.5 |  |  | $ | 38.8 |
Year Ended December 31, 2022 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Operating Lease Cost |  | $ | 157.5 |  |  | $ | 18.4 |  |  | $ | 1.1 |  |  | $ | 17.9 |  |  | $ | 29.5 |  |  | $ | 16.9 |  |  | $ | 11.8 |  |  | $ | 15.3 |
Finance Lease Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Right-of-Use Assets |  | 205.5 |  |  | 6.8 |  |  | — |  |  | 7.9 |  |  | 78.7 |  |  | 4.9 |  |  | 3.2 |  |  | 10.8 |
Interest on Lease Liabilities |  | 13.4 |  |  | 1.3 |  |  | — |  |  | 2.0 |  |  | 3.1 |  |  | 0.8 |  |  | 0.6 |  |  | 2.1 |
Total Lease Rental Costs (a) |  | $ | 376.4 |  |  | $ | 26.5 |  |  | $ | 1.1 |  |  | $ | 27.8 |  |  | $ | 111.3 |  |  | $ | 22.6 |  |  | $ | 15.6 |  |  | $ | 28.2 |
(a)Excludes variable and short-term lease costs, which were immaterial. Supplemental information related to leases are shown in the tables below:
December 31, 2024 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
Weighted-Average Remaining Lease Term (years): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases |  | 12.80 |  | 4.45 |  | 2.29 |  | 5.39 |  | 4.43 |  | 4.64 |  | 23.68 |  | 21.97
Finance Leases |  | 4.81 |  | 5.04 |  | 0.00 |  | 4.09 |  | 4.83 |  | 4.58 |  | 5.44 |  | 6.14
Weighted-Average Discount Rate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases |  | 3.89 | % |  | 4.29 | % |  | 4.55 | % |  | 4.20 | % |  | 4.11 | % |  | 4.17 | % |  | 3.76 | % |  | 3.60 | %
Finance Leases |  | 6.43 | % |  | 5.73 | % |  | — | % |  | 6.69 | % |  | 9.07 | % |  | 5.59 | % |  | 5.48 | % |  | 5.73 | %
December 31, 2023 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
Weighted-Average Remaining Lease Term (years): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases |  | 12.58 |  | 3.99 |  | 2.76 |  | 6.01 |  | 4.53 |  | 5.36 |  | 23.85 |  | 22.50
Finance Leases |  | 4.63 |  | 5.13 |  | 0.00 |  | 4.16 |  | 4.95 |  | 4.97 |  | 5.76 |  | 4.78
Weighted-Average Discount Rate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases |  | 3.73 | % |  | 4.23 | % |  | 3.61 | % |  | 3.50 | % |  | 3.89 | % |  | 3.93 | % |  | 3.72 | % |  | 3.53 | %
Finance Leases |  | 6.19 | % |  | 5.27 | % |  | — | % |  | 7.04 | % |  | 8.62 | % |  | 5.32 | % |  | 5.14 | % |  | 5.22 | %
Year Ended December 31, 2024 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Cash Flows Used for Operating Leases |  | $ | 143.9 |  |  | $ | 32.2 |  |  | $ | 1.3 |  |  | $ | 18.4 |  |  | $ | 19.6 |  |  | $ | 16.8 |  |  | $ | 12.5 |  |  | $ | 16.8 |
Operating Cash Flows Used for Finance Leases |  | 12.0 |  |  | 1.4 |  |  | — |  |  | 1.5 |  |  | 2.2 |  |  | 0.9 |  |  | 0.7 |  |  | 1.7 |
Financing Cash Flows Used for Finance Leases |  | 64.8 |  |  | 7.5 |  |  | — |  |  | 8.7 |  |  | 7.1 |  |  | 5.3 |  |  | 3.3 |  |  | 14.0 |
Non-cash Acquisitions Under Operating Leases |  | $ | 82.3 |  |  | $ | 6.0 |  |  | $ | 1.0 |  |  | $ | 9.3 |  |  | $ | 15.0 |  |  | $ | 4.6 |  |  | $ | 2.5 |  |  | $ | 26.9 |
Year Ended December 31, 2023 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Cash Flows Used for Operating Leases |  | $ | 146.8 |  |  | $ | 33.6 |  |  | $ | 1.3 |  |  | $ | 18.3 |  |  | $ | 19.5 |  |  | $ | 17.0 |  |  | $ | 12.5 |  |  | $ | 16.5 |
Operating Cash Flows Used for Finance Leases |  | 11.9 |  |  | 1.4 |  |  | — |  |  | 1.8 |  |  | 2.5 |  |  | 0.9 |  |  | 0.7 |  |  | 1.4 |
Financing Cash Flows Used for Finance Leases |  | 68.3 |  |  | 7.4 |  |  | — |  |  | 8.3 |  |  | 7.4 |  |  | 5.0 |  |  | 3.3 |  |  | 19.1 |
Non-cash Acquisitions Under Operating Leases |  | $ | 99.8 |  |  | $ | 12.4 |  |  | $ | 1.2 |  |  | $ | 15.7 |  |  | $ | 7.9 |  |  | $ | 10.2 |  |  | $ | 15.5 |  |  | $ | 14.3 |
The following tables show property, plant and equipment under finance leases and noncurrent assets under operating leases and related obligations recorded on the balance sheets. Unless shown as a separate line on the balance sheets due to materiality, net operating lease assets are included in Deferred Charges and Other Noncurrent Assets, current finance lease obligations are included in Other Current Liabilities and long-term finance lease obligations are included in Deferred Credits and Other Noncurrent Liabilities on the balance sheets. Lease obligations are not recognized on the balance sheets for lease agreements with a lease term of less than twelve months.
December 31, 2024 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Property, Plant and Equipment Under Finance Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Generation |  | $ | 73.8 |  |  | $ | — |  |  | $ | — |  |  | $ | 41.6 |  |  | $ | 16.6 |  |  | $ | — |  |  | $ | 0.6 |  |  | $ | 2.0 |
Other Property, Plant and Equipment |  | 283.7 |  |  | 52.4 |  |  | — |  |  | 19.4 |  |  | 38.8 |  |  | 30.4 |  |  | 23.0 |  |  | 29.8 |
Total Property, Plant and Equipment |  | 357.5 |  |  | 52.4 |  |  | — |  |  | 61.0 |  |  | 55.4 |  |  | 30.4 |  |  | 23.6 |  |  | 31.8 |
Accumulated Amortization |  | 193.9 |  |  | 27.7 |  |  | — |  |  | 42.0 |  |  | 33.4 |  |  | 16.1 |  |  | 11.3 |  |  | 13.3 |
Net Property, Plant and Equipment Under Finance Leases |  | $ | 163.6 |  |  | $ | 24.7 |  |  | $ | — |  |  | $ | 19.0 |  |  | $ | 22.0 |  |  | $ | 14.3 |  |  | $ | 12.3 |  |  | $ | 18.5 |
Obligations Under Finance Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncurrent Liability |  | $ | 117.1 |  |  | $ | 18.2 |  |  | $ | — |  |  | $ | 11.2 |  |  | $ | 15.9 |  |  | $ | 10.2 |  |  | $ | 9.5 |  |  | $ | 14.8 |
Liability Due Within One Year |  | 46.5 |  |  | 6.5 |  |  | — |  |  | 7.8 |  |  | 6.1 |  |  | 4.1 |  |  | 2.8 |  |  | 3.7 |
Total Obligations Under Finance Leases |  | $ | 163.6 |  |  | $ | 24.7 |  |  | $ | — |  |  | $ | 19.0 |  |  | $ | 22.0 |  |  | $ | 14.3 |  |  | $ | 12.3 |  |  | $ | 18.5 |
December 31, 2023 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Property, Plant and Equipment Under Finance Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Generation |  | $ | 120.1 |  |  | $ | — |  |  | $ | — |  |  | $ | 41.0 |  |  | $ | 28.2 |  |  | $ | — |  |  | $ | 0.6 |  |  | $ | 25.3 |
Other Property, Plant and Equipment |  | 305.9 |  |  | 53.9 |  |  | — |  |  | 22.1 |  |  | 42.3 |  |  | 33.7 |  |  | 25.5 |  |  | 32.0 |
Total Property, Plant and Equipment |  | 426.0 |  |  | 53.9 |  |  | — |  |  | 63.1 |  |  | 70.5 |  |  | 33.7 |  |  | 26.1 |  |  | 57.3 |
Accumulated Amortization |  | 221.5 |  |  | 26.3 |  |  | — |  |  | 37.1 |  |  | 39.0 |  |  | 15.5 |  |  | 12.3 |  |  | 28.3 |
Net Property, Plant and Equipment Under Finance Leases |  | $ | 204.5 |  |  | $ | 27.6 |  |  | $ | — |  |  | $ | 26.0 |  |  | $ | 31.5 |  |  | $ | 18.2 |  |  | $ | 13.8 |  |  | $ | 29.0 |
Obligations Under Finance Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncurrent Liability |  | $ | 139.9 |  |  | $ | 20.6 |  |  | $ | — |  |  | $ | 17.8 |  |  | $ | 20.8 |  |  | $ | 13.2 |  |  | $ | 10.7 |  |  | $ | 18.8 |
Liability Due Within One Year |  | 65.7 |  |  | 7.0 |  |  | — |  |  | 8.2 |  |  | 10.7 |  |  | 5.0 |  |  | 3.1 |  |  | 11.3 |
Total Obligations Under Finance Leases |  | $ | 205.6 |  |  | $ | 27.6 |  |  | $ | — |  |  | $ | 26.0 |  |  | $ | 31.5 |  |  | $ | 18.2 |  |  | $ | 13.8 |  |  | $ | 30.1 |
December 31, 2024 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Operating Lease Assets |  | $ | 580.1 |  |  | $ | 54.4 |  |  | $ | 2.3 |  |  | $ | 67.0 |  |  | $ | 51.5 |  |  | $ | 60.4 |  |  | $ | 106.2 |  |  | $ | 141.0 |
Obligations Under Operating Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncurrent Liability |  | $ | 504.3 |  |  | $ | 43.4 |  |  | $ | 1.2 |  |  | $ | 54.0 |  |  | $ | 40.1 |  |  | $ | 48.4 |  |  | $ | 101.9 |  |  | $ | 137.5 |
Liability Due Within One Year |  | 91.9 |  |  | 13.1 |  |  | 1.3 |  |  | 13.7 |  |  | 12.3 |  |  | 12.3 |  |  | 10.4 |  |  | 8.2 |
Total Obligations Under Operating Leases |  | $ | 596.2 |  |  | $ | 56.5 |  |  | $ | 2.5 |  |  | $ | 67.7 |  |  | $ | 52.4 |  |  | $ | 60.7 |  |  | $ | 112.3 |  |  | $ | 145.7 |
December 31, 2023 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Operating Lease Assets |  | $ | 620.2 |  |  | $ | 77.6 |  |  | $ | 2.6 |  |  | $ | 73.7 |  |  | $ | 53.8 |  |  | $ | 69.9 |  |  | $ | 112.8 |  |  | $ | 126.3 |
Obligations Under Operating Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncurrent Liability |  | $ | 519.4 |  |  | $ | 50.9 |  |  | $ | 1.4 |  |  | $ | 59.8 |  |  | $ | 37.7 |  |  | $ | 56.7 |  |  | $ | 106.8 |  |  | $ | 122.5 |
Liability Due Within One Year |  | 115.7 |  |  | 28.7 |  |  | 1.3 |  |  | 14.6 |  |  | 16.8 |  |  | 13.5 |  |  | 10.1 |  |  | 9.0 |
Total Obligations Under Operating Leases |  | $ | 635.1 |  |  | $ | 79.6 |  |  | $ | 2.7 |  |  | $ | 74.4 |  |  | $ | 54.5 |  |  | $ | 70.2 |  |  | $ | 116.9 |  |  | $ | 131.5 |
Future minimum lease payments consisted of the following as of December 31, 2024:
Finance Leases |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
2025 |  | $ | 55.6 |  |  | $ | 7.8 |  |  | $ | — |  |  | $ | 8.9 |  |  | $ | 7.7 |  |  | $ | 4.8 |  |  | $ | 3.4 |  |  | $ | 4.7 |
2026 |  | 39.8 |  |  | 6.2 |  |  | — |  |  | 4.0 |  |  | 4.9 |  |  | 3.6 |  |  | 2.9 |  |  | 4.0 |
2027 |  | 30.5 |  |  | 4.5 |  |  | — |  |  | 2.5 |  |  | 4.1 |  |  | 2.6 |  |  | 2.3 |  |  | 3.3 |
2028 |  | 23.1 |  |  | 3.1 |  |  | — |  |  | 2.0 |  |  | 3.4 |  |  | 2.0 |  |  | 1.8 |  |  | 2.7 |
2029 |  | 15.5 |  |  | 2.4 |  |  | — |  |  | 1.6 |  |  | 2.8 |  |  | 1.4 |  |  | 1.3 |  |  | 2.4 |
After 2029 |  | 26.4 |  |  | 4.7 |  |  | — |  |  | 2.5 |  |  | 4.7 |  |  | 1.9 |  |  | 2.6 |  |  | 5.0 |
Total Future Minimum Lease Payments |  | 190.9 |  |  | 28.7 |  |  | — |  |  | 21.5 |  |  | 27.6 |  |  | 16.3 |  |  | 14.3 |  |  | 22.1 |
Less: Imputed Interest |  | 27.3 |  |  | 4.0 |  |  | — |  |  | 2.5 |  |  | 5.6 |  |  | 2.0 |  |  | 2.0 |  |  | 3.6 |
Estimated Present Value of Future Minimum Lease Payments |  | $ | 163.6 |  |  | $ | 24.7 |  |  | $ | — |  |  | $ | 19.0 |  |  | $ | 22.0 |  |  | $ | 14.3 |  |  | $ | 12.3 |  |  | $ | 18.5 |
Operating Leases |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
2025 |  | $ | 123.0 |  |  | $ | 16.7 |  |  | $ | 1.3 |  |  | $ | 17.3 |  |  | $ | 15.9 |  |  | $ | 16.3 |  |  | $ | 11.6 |  |  | $ | 17.6 |
2026 |  | 107.8 |  |  | 14.5 |  |  | 0.7 |  |  | 15.3 |  |  | 15.0 |  |  | 15.1 |  |  | 10.8 |  |  | 15.5 |
2027 |  | 94.0 |  |  | 11.9 |  |  | 0.3 |  |  | 13.6 |  |  | 11.0 |  |  | 13.5 |  |  | 9.8 |  |  | 14.1 |
2028 |  | 78.5 |  |  | 8.9 |  |  | 0.3 |  |  | 11.4 |  |  | 9.0 |  |  | 11.3 |  |  | 8.4 |  |  | 12.1 |
2029 |  | 52.3 |  |  | 4.9 |  |  | — |  |  | 8.2 |  |  | 4.4 |  |  | 6.6 |  |  | 6.5 |  |  | 9.0 |
After 2029 |  | 340.0 |  |  | 6.5 |  |  | — |  |  | 10.2 |  |  | 2.4 |  |  | 4.9 |  |  | 123.7 |  |  | 178.1 |
Total Future Minimum Lease Payments |  | 795.6 |  |  | 63.4 |  |  | 2.6 |  |  | 76.0 |  |  | 57.7 |  |  | 67.7 |  |  | 170.8 |  |  | 246.4 |
Less: Imputed Interest |  | 199.4 |  |  | 6.9 |  |  | 0.1 |  |  | 8.3 |  |  | 5.3 |  |  | 7.0 |  |  | 58.5 |  |  | 100.7 |
Estimated Present Value of Future Minimum Lease Payments |  | $ | 596.2 |  |  | $ | 56.5 |  |  | $ | 2.5 |  |  | $ | 67.7 |  |  | $ | 52.4 |  |  | $ | 60.7 |  |  | $ | 112.3 |  |  | $ | 145.7 |
Master Lease Agreements (Applies to all Registrants except AEPTCo) The Registrants lease certain equipment under master lease agreements. Under the lease agreements, the lessor is guaranteed a residual value up to a stated percentage of the equipment cost at the end of the lease term. If the actual fair value of the leased equipment is below the guaranteed residual value at the end of the lease term, the Registrants are committed to pay the difference between the actual fair value and the residual value guarantee. Historically, at the end of the lease term the fair value has been in excess of the amount guaranteed. As of December 31, 2024, the maximum potential loss by the Registrants for these lease agreements assuming the fair value of the equipment is zero at the end of the lease term was as follows:
Company |  | Maximum Potential Loss
|  | (in millions)
AEP |  | $ | 41.3 |
AEP Texas |  | 9.4 |
APCo |  | 5.4 |
I&M |  | 3.9 |
OPCo |  | 6.8 |
PSO |  | 3.9 |
SWEPCo |  | 4.7 |
Lessor Activity The Registrants’ lessor activity was immaterial as of and for the years ended December 31, 2024 and December 31, 2023, respectively.
LEASES | LEASES The disclosures in this note apply to all Registrants unless indicated otherwise. The Registrants lease property, plant and equipment including, but not limited to, fleet, information technology and real estate leases. These leases require payments of non-lease components, including related property taxes, operating and maintenance costs. AEP does not separate non-lease components from associated lease components. Many of these leases have purchase or renewal options. Leases not renewed are often replaced by other leases. Options to renew or purchase a lease are included in the measurement of lease assets and liabilities if it is reasonably certain the Registrant will exercise the option. Lease obligations are measured using the discount rate implicit in the lease when that rate is readily determinable. AEP has visibility into the rate implicit in the lease when assets are leased from selected financial institutions under master leasing agreements. When the implicit rate is not readily determinable, the Registrants measure their lease obligation using their estimated secured incremental borrowing rate. Incremental borrowing rates are comprised of an underlying risk-free rate and a secured credit spread relative to the lessee on a matched maturity basis. Operating lease rentals and finance lease amortization costs are generally charged to Other Operation and Maintenance expense in accordance with rate-making treatment for regulated operations. The amortization costs related to the Rockport finance lease, which ended in December 2022, were charged to Depreciation and Amortization. Interest on finance lease liabilities is generally charged to Interest Expense. Lease costs associated with capital projects are included in Property, Plant and Equipment on the balance sheets. For regulated operations with finance leases, a finance lease asset and offsetting liability are recorded at the present value of the remaining lease payments for each reporting period. Finance leases for nonregulated property are accounted for as if the assets were owned and financed. The components of rental costs were as follows:
Year Ended December 31, 2024 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Operating Lease Cost |  | $ | 145.9 |  |  | $ | 32.3 |  |  | $ | 1.3 |  |  | $ | 18.4 |  |  | $ | 19.6 |  |  | $ | 16.8 |  |  | $ | 13.5 |  |  | $ | 17.8 |
Finance Lease Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Right-of-Use Assets |  | 63.7 |  |  | 7.5 |  |  | — |  |  | 8.7 |  |  | 7.2 |  |  | 5.3 |  |  | 3.3 |  |  | 13.0 |
Interest on Lease Liabilities |  | 11.9 |  |  | 1.4 |  |  | — |  |  | 1.5 |  |  | 2.2 |  |  | 0.9 |  |  | 0.7 |  |  | 1.6 |
Total Lease Rental Costs (a) |  | $ | 221.5 |  |  | $ | 41.2 |  |  | $ | 1.3 |  |  | $ | 28.6 |  |  | $ | 29.0 |  |  | $ | 23.0 |  |  | $ | 17.5 |  |  | $ | 32.4 |
Year Ended December 31, 2023 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Operating Lease Cost |  | $ | 149.9 |  |  | $ | 34.0 |  |  | $ | 1.3 |  |  | $ | 18.5 |  |  | $ | 19.6 |  |  | $ | 17.3 |  |  | $ | 13.5 |  |  | $ | 17.5 |
Finance Lease Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Right-of-Use Assets |  | 69.1 |  |  | 7.4 |  |  | — |  |  | 8.3 |  |  | 7.3 |  |  | 5.0 |  |  | 3.3 |  |  | 19.9 |
Interest on Lease Liabilities |  | 11.9 |  |  | 1.4 |  |  | — |  |  | 1.8 |  |  | 2.5 |  |  | 0.9 |  |  | 0.7 |  |  | 1.4 |
Total Lease Rental Costs (a) |  | $ | 230.9 |  |  | $ | 42.8 |  |  | $ | 1.3 |  |  | $ | 28.6 |  |  | $ | 29.4 |  |  | $ | 23.2 |  |  | $ | 17.5 |  |  | $ | 38.8 |
Year Ended December 31, 2022 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Operating Lease Cost |  | $ | 157.5 |  |  | $ | 18.4 |  |  | $ | 1.1 |  |  | $ | 17.9 |  |  | $ | 29.5 |  |  | $ | 16.9 |  |  | $ | 11.8 |  |  | $ | 15.3 |
Finance Lease Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Right-of-Use Assets |  | 205.5 |  |  | 6.8 |  |  | — |  |  | 7.9 |  |  | 78.7 |  |  | 4.9 |  |  | 3.2 |  |  | 10.8 |
Interest on Lease Liabilities |  | 13.4 |  |  | 1.3 |  |  | — |  |  | 2.0 |  |  | 3.1 |  |  | 0.8 |  |  | 0.6 |  |  | 2.1 |
Total Lease Rental Costs (a) |  | $ | 376.4 |  |  | $ | 26.5 |  |  | $ | 1.1 |  |  | $ | 27.8 |  |  | $ | 111.3 |  |  | $ | 22.6 |  |  | $ | 15.6 |  |  | $ | 28.2 |
(a)Excludes variable and short-term lease costs, which were immaterial. Supplemental information related to leases are shown in the tables below:
December 31, 2024 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
Weighted-Average Remaining Lease Term (years): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases |  | 12.80 |  | 4.45 |  | 2.29 |  | 5.39 |  | 4.43 |  | 4.64 |  | 23.68 |  | 21.97
Finance Leases |  | 4.81 |  | 5.04 |  | 0.00 |  | 4.09 |  | 4.83 |  | 4.58 |  | 5.44 |  | 6.14
Weighted-Average Discount Rate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases |  | 3.89 | % |  | 4.29 | % |  | 4.55 | % |  | 4.20 | % |  | 4.11 | % |  | 4.17 | % |  | 3.76 | % |  | 3.60 | %
Finance Leases |  | 6.43 | % |  | 5.73 | % |  | — | % |  | 6.69 | % |  | 9.07 | % |  | 5.59 | % |  | 5.48 | % |  | 5.73 | %
December 31, 2023 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
Weighted-Average Remaining Lease Term (years): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases |  | 12.58 |  | 3.99 |  | 2.76 |  | 6.01 |  | 4.53 |  | 5.36 |  | 23.85 |  | 22.50
Finance Leases |  | 4.63 |  | 5.13 |  | 0.00 |  | 4.16 |  | 4.95 |  | 4.97 |  | 5.76 |  | 4.78
Weighted-Average Discount Rate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases |  | 3.73 | % |  | 4.23 | % |  | 3.61 | % |  | 3.50 | % |  | 3.89 | % |  | 3.93 | % |  | 3.72 | % |  | 3.53 | %
Finance Leases |  | 6.19 | % |  | 5.27 | % |  | — | % |  | 7.04 | % |  | 8.62 | % |  | 5.32 | % |  | 5.14 | % |  | 5.22 | %
Year Ended December 31, 2024 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Cash Flows Used for Operating Leases |  | $ | 143.9 |  |  | $ | 32.2 |  |  | $ | 1.3 |  |  | $ | 18.4 |  |  | $ | 19.6 |  |  | $ | 16.8 |  |  | $ | 12.5 |  |  | $ | 16.8 |
Operating Cash Flows Used for Finance Leases |  | 12.0 |  |  | 1.4 |  |  | — |  |  | 1.5 |  |  | 2.2 |  |  | 0.9 |  |  | 0.7 |  |  | 1.7 |
Financing Cash Flows Used for Finance Leases |  | 64.8 |  |  | 7.5 |  |  | — |  |  | 8.7 |  |  | 7.1 |  |  | 5.3 |  |  | 3.3 |  |  | 14.0 |
Non-cash Acquisitions Under Operating Leases |  | $ | 82.3 |  |  | $ | 6.0 |  |  | $ | 1.0 |  |  | $ | 9.3 |  |  | $ | 15.0 |  |  | $ | 4.6 |  |  | $ | 2.5 |  |  | $ | 26.9 |
Year Ended December 31, 2023 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Cash Flows Used for Operating Leases |  | $ | 146.8 |  |  | $ | 33.6 |  |  | $ | 1.3 |  |  | $ | 18.3 |  |  | $ | 19.5 |  |  | $ | 17.0 |  |  | $ | 12.5 |  |  | $ | 16.5 |
Operating Cash Flows Used for Finance Leases |  | 11.9 |  |  | 1.4 |  |  | — |  |  | 1.8 |  |  | 2.5 |  |  | 0.9 |  |  | 0.7 |  |  | 1.4 |
Financing Cash Flows Used for Finance Leases |  | 68.3 |  |  | 7.4 |  |  | — |  |  | 8.3 |  |  | 7.4 |  |  | 5.0 |  |  | 3.3 |  |  | 19.1 |
Non-cash Acquisitions Under Operating Leases |  | $ | 99.8 |  |  | $ | 12.4 |  |  | $ | 1.2 |  |  | $ | 15.7 |  |  | $ | 7.9 |  |  | $ | 10.2 |  |  | $ | 15.5 |  |  | $ | 14.3 |
The following tables show property, plant and equipment under finance leases and noncurrent assets under operating leases and related obligations recorded on the balance sheets. Unless shown as a separate line on the balance sheets due to materiality, net operating lease assets are included in Deferred Charges and Other Noncurrent Assets, current finance lease obligations are included in Other Current Liabilities and long-term finance lease obligations are included in Deferred Credits and Other Noncurrent Liabilities on the balance sheets. Lease obligations are not recognized on the balance sheets for lease agreements with a lease term of less than twelve months.
December 31, 2024 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Property, Plant and Equipment Under Finance Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Generation |  | $ | 73.8 |  |  | $ | — |  |  | $ | — |  |  | $ | 41.6 |  |  | $ | 16.6 |  |  | $ | — |  |  | $ | 0.6 |  |  | $ | 2.0 |
Other Property, Plant and Equipment |  | 283.7 |  |  | 52.4 |  |  | — |  |  | 19.4 |  |  | 38.8 |  |  | 30.4 |  |  | 23.0 |  |  | 29.8 |
Total Property, Plant and Equipment |  | 357.5 |  |  | 52.4 |  |  | — |  |  | 61.0 |  |  | 55.4 |  |  | 30.4 |  |  | 23.6 |  |  | 31.8 |
Accumulated Amortization |  | 193.9 |  |  | 27.7 |  |  | — |  |  | 42.0 |  |  | 33.4 |  |  | 16.1 |  |  | 11.3 |  |  | 13.3 |
Net Property, Plant and Equipment Under Finance Leases |  | $ | 163.6 |  |  | $ | 24.7 |  |  | $ | — |  |  | $ | 19.0 |  |  | $ | 22.0 |  |  | $ | 14.3 |  |  | $ | 12.3 |  |  | $ | 18.5 |
Obligations Under Finance Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncurrent Liability |  | $ | 117.1 |  |  | $ | 18.2 |  |  | $ | — |  |  | $ | 11.2 |  |  | $ | 15.9 |  |  | $ | 10.2 |  |  | $ | 9.5 |  |  | $ | 14.8 |
Liability Due Within One Year |  | 46.5 |  |  | 6.5 |  |  | — |  |  | 7.8 |  |  | 6.1 |  |  | 4.1 |  |  | 2.8 |  |  | 3.7 |
Total Obligations Under Finance Leases |  | $ | 163.6 |  |  | $ | 24.7 |  |  | $ | — |  |  | $ | 19.0 |  |  | $ | 22.0 |  |  | $ | 14.3 |  |  | $ | 12.3 |  |  | $ | 18.5 |
December 31, 2023 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Property, Plant and Equipment Under Finance Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Generation |  | $ | 120.1 |  |  | $ | — |  |  | $ | — |  |  | $ | 41.0 |  |  | $ | 28.2 |  |  | $ | — |  |  | $ | 0.6 |  |  | $ | 25.3 |
Other Property, Plant and Equipment |  | 305.9 |  |  | 53.9 |  |  | — |  |  | 22.1 |  |  | 42.3 |  |  | 33.7 |  |  | 25.5 |  |  | 32.0 |
Total Property, Plant and Equipment |  | 426.0 |  |  | 53.9 |  |  | — |  |  | 63.1 |  |  | 70.5 |  |  | 33.7 |  |  | 26.1 |  |  | 57.3 |
Accumulated Amortization |  | 221.5 |  |  | 26.3 |  |  | — |  |  | 37.1 |  |  | 39.0 |  |  | 15.5 |  |  | 12.3 |  |  | 28.3 |
Net Property, Plant and Equipment Under Finance Leases |  | $ | 204.5 |  |  | $ | 27.6 |  |  | $ | — |  |  | $ | 26.0 |  |  | $ | 31.5 |  |  | $ | 18.2 |  |  | $ | 13.8 |  |  | $ | 29.0 |
Obligations Under Finance Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncurrent Liability |  | $ | 139.9 |  |  | $ | 20.6 |  |  | $ | — |  |  | $ | 17.8 |  |  | $ | 20.8 |  |  | $ | 13.2 |  |  | $ | 10.7 |  |  | $ | 18.8 |
Liability Due Within One Year |  | 65.7 |  |  | 7.0 |  |  | — |  |  | 8.2 |  |  | 10.7 |  |  | 5.0 |  |  | 3.1 |  |  | 11.3 |
Total Obligations Under Finance Leases |  | $ | 205.6 |  |  | $ | 27.6 |  |  | $ | — |  |  | $ | 26.0 |  |  | $ | 31.5 |  |  | $ | 18.2 |  |  | $ | 13.8 |  |  | $ | 30.1 |
December 31, 2024 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Operating Lease Assets |  | $ | 580.1 |  |  | $ | 54.4 |  |  | $ | 2.3 |  |  | $ | 67.0 |  |  | $ | 51.5 |  |  | $ | 60.4 |  |  | $ | 106.2 |  |  | $ | 141.0 |
Obligations Under Operating Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncurrent Liability |  | $ | 504.3 |  |  | $ | 43.4 |  |  | $ | 1.2 |  |  | $ | 54.0 |  |  | $ | 40.1 |  |  | $ | 48.4 |  |  | $ | 101.9 |  |  | $ | 137.5 |
Liability Due Within One Year |  | 91.9 |  |  | 13.1 |  |  | 1.3 |  |  | 13.7 |  |  | 12.3 |  |  | 12.3 |  |  | 10.4 |  |  | 8.2 |
Total Obligations Under Operating Leases |  | $ | 596.2 |  |  | $ | 56.5 |  |  | $ | 2.5 |  |  | $ | 67.7 |  |  | $ | 52.4 |  |  | $ | 60.7 |  |  | $ | 112.3 |  |  | $ | 145.7 |
December 31, 2023 |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Operating Lease Assets |  | $ | 620.2 |  |  | $ | 77.6 |  |  | $ | 2.6 |  |  | $ | 73.7 |  |  | $ | 53.8 |  |  | $ | 69.9 |  |  | $ | 112.8 |  |  | $ | 126.3 |
Obligations Under Operating Leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncurrent Liability |  | $ | 519.4 |  |  | $ | 50.9 |  |  | $ | 1.4 |  |  | $ | 59.8 |  |  | $ | 37.7 |  |  | $ | 56.7 |  |  | $ | 106.8 |  |  | $ | 122.5 |
Liability Due Within One Year |  | 115.7 |  |  | 28.7 |  |  | 1.3 |  |  | 14.6 |  |  | 16.8 |  |  | 13.5 |  |  | 10.1 |  |  | 9.0 |
Total Obligations Under Operating Leases |  | $ | 635.1 |  |  | $ | 79.6 |  |  | $ | 2.7 |  |  | $ | 74.4 |  |  | $ | 54.5 |  |  | $ | 70.2 |  |  | $ | 116.9 |  |  | $ | 131.5 |
Future minimum lease payments consisted of the following as of December 31, 2024:
Finance Leases |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
2025 |  | $ | 55.6 |  |  | $ | 7.8 |  |  | $ | — |  |  | $ | 8.9 |  |  | $ | 7.7 |  |  | $ | 4.8 |  |  | $ | 3.4 |  |  | $ | 4.7 |
2026 |  | 39.8 |  |  | 6.2 |  |  | — |  |  | 4.0 |  |  | 4.9 |  |  | 3.6 |  |  | 2.9 |  |  | 4.0 |
2027 |  | 30.5 |  |  | 4.5 |  |  | — |  |  | 2.5 |  |  | 4.1 |  |  | 2.6 |  |  | 2.3 |  |  | 3.3 |
2028 |  | 23.1 |  |  | 3.1 |  |  | — |  |  | 2.0 |  |  | 3.4 |  |  | 2.0 |  |  | 1.8 |  |  | 2.7 |
2029 |  | 15.5 |  |  | 2.4 |  |  | — |  |  | 1.6 |  |  | 2.8 |  |  | 1.4 |  |  | 1.3 |  |  | 2.4 |
After 2029 |  | 26.4 |  |  | 4.7 |  |  | — |  |  | 2.5 |  |  | 4.7 |  |  | 1.9 |  |  | 2.6 |  |  | 5.0 |
Total Future Minimum Lease Payments |  | 190.9 |  |  | 28.7 |  |  | — |  |  | 21.5 |  |  | 27.6 |  |  | 16.3 |  |  | 14.3 |  |  | 22.1 |
Less: Imputed Interest |  | 27.3 |  |  | 4.0 |  |  | — |  |  | 2.5 |  |  | 5.6 |  |  | 2.0 |  |  | 2.0 |  |  | 3.6 |
Estimated Present Value of Future Minimum Lease Payments |  | $ | 163.6 |  |  | $ | 24.7 |  |  | $ | — |  |  | $ | 19.0 |  |  | $ | 22.0 |  |  | $ | 14.3 |  |  | $ | 12.3 |  |  | $ | 18.5 |
Operating Leases |  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
2025 |  | $ | 123.0 |  |  | $ | 16.7 |  |  | $ | 1.3 |  |  | $ | 17.3 |  |  | $ | 15.9 |  |  | $ | 16.3 |  |  | $ | 11.6 |  |  | $ | 17.6 |
2026 |  | 107.8 |  |  | 14.5 |  |  | 0.7 |  |  | 15.3 |  |  | 15.0 |  |  | 15.1 |  |  | 10.8 |  |  | 15.5 |
2027 |  | 94.0 |  |  | 11.9 |  |  | 0.3 |  |  | 13.6 |  |  | 11.0 |  |  | 13.5 |  |  | 9.8 |  |  | 14.1 |
2028 |  | 78.5 |  |  | 8.9 |  |  | 0.3 |  |  | 11.4 |  |  | 9.0 |  |  | 11.3 |  |  | 8.4 |  |  | 12.1 |
2029 |  | 52.3 |  |  | 4.9 |  |  | — |  |  | 8.2 |  |  | 4.4 |  |  | 6.6 |  |  | 6.5 |  |  | 9.0 |
After 2029 |  | 340.0 |  |  | 6.5 |  |  | — |  |  | 10.2 |  |  | 2.4 |  |  | 4.9 |  |  | 123.7 |  |  | 178.1 |
Total Future Minimum Lease Payments |  | 795.6 |  |  | 63.4 |  |  | 2.6 |  |  | 76.0 |  |  | 57.7 |  |  | 67.7 |  |  | 170.8 |  |  | 246.4 |
Less: Imputed Interest |  | 199.4 |  |  | 6.9 |  |  | 0.1 |  |  | 8.3 |  |  | 5.3 |  |  | 7.0 |  |  | 58.5 |  |  | 100.7 |
Estimated Present Value of Future Minimum Lease Payments |  | $ | 596.2 |  |  | $ | 56.5 |  |  | $ | 2.5 |  |  | $ | 67.7 |  |  | $ | 52.4 |  |  | $ | 60.7 |  |  | $ | 112.3 |  |  | $ | 145.7 |
Master Lease Agreements (Applies to all Registrants except AEPTCo) The Registrants lease certain equipment under master lease agreements. Under the lease agreements, the lessor is guaranteed a residual value up to a stated percentage of the equipment cost at the end of the lease term. If the actual fair value of the leased equipment is below the guaranteed residual value at the end of the lease term, the Registrants are committed to pay the difference between the actual fair value and the residual value guarantee. Historically, at the end of the lease term the fair value has been in excess of the amount guaranteed. As of December 31, 2024, the maximum potential loss by the Registrants for these lease agreements assuming the fair value of the equipment is zero at the end of the lease term was as follows:
Company |  | Maximum Potential Loss
|  | (in millions)
AEP |  | $ | 41.3 |
AEP Texas |  | 9.4 |
APCo |  | 5.4 |
I&M |  | 3.9 |
OPCo |  | 6.8 |
PSO |  | 3.9 |
SWEPCo |  | 4.7 |
Lessor Activity The Registrants’ lessor activity was immaterial as of and for the years ended December 31, 2024 and December 31, 2023, respectively.

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- Definition The entire disclosure for finance leases of lessee. Includes, but is not limited to, description of lessee's finance lease and maturity analysis of finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/842-20/tableOfContent + Details
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