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FINANCING ACTIVITIES (Tables) | 12 Months Ended
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Dec. 31, 2024
Debt Disclosure [Abstract] |
Reconciliation of Common Stock Share Activity | The following table is a reconciliation of common stock share activity:
Shares of AEP Common Stock |  | Issued |  | Held in Treasury |
Balance, December 31, 2021 |  | 524,416,175 |  |  | 20,204,160 |  |
Issued |  | 683,146 |  |  | — |  |
Treasury Stock Reissued |  | — |  |  | (8,970,920) |  | (a)
Balance, December 31, 2022 |  | 525,099,321 |  |  | 11,233,240 |  |
Issued |  | 2,269,836 |  |  | — |  |
Treasury Stock Reissued |  | — |  |  | (10,048,668) |  | (a)
Balance, December 31, 2023 |  | 527,369,157 |  |  | 1,184,572 |  |
Issued |  | 6,725,373 |  |  | — |  |
Treasury Stock Reacquired |  | — |  |  | 2,243 |  |
Balance, December 31, 2024 |  | 534,094,530 |  |  | 1,186,815 |  |
(a)Reissued Treasury Stock used to fulfill share commitments related to AEP’s Equity Units.
Schedule of Long-term Debt | The following table details long-term debt outstanding:
|  |  |  | Weighted-Average |  | Interest Rate Ranges as of |  | Outstanding as of |  |
|  |  |  | Interest Rate as of |  | December 31, |  | December 31, |  |
Company |  | Maturity |  | December 31, 2024 |  | 2024 |  | 2023 |  | 2024 |  | 2023 |  |
AEP |  |  |  |  |  |  |  |  |  | (in millions) |  |
Senior Unsecured Notes |  | 2025-2054 |  | 4.32% |  | 1.00%-8.13% |  | 1.00%-8.13% |  | $ | 36,410.9 |  |  | $ | 33,779.4 |  |  |
Pollution Control Bonds (a) |  | 2025-2036 (b) |  | 3.26% |  | 0.63%-4.70% |  | 0.63%-4.90% |  | 1,771.3 |  |  | 1,771.6 |  |  |
Notes Payable – Nonaffiliated (c) |  | 2025-2034 |  | 6.49% |  | 0.93%-6.89% |  | 0.93%-6.59% |  | 609.9 |  |  | 193.3 |  |  |
Securitization Bonds |  | 2025-2039 (d) |  | 4.08% |  | 2.06%-4.88% |  | 2.06%-3.77% |  | 578.0 |  |  | 368.9 |  |  |
Spent Nuclear Fuel Obligation (e) |  |  |  |  |  |  |  |  |  | 316.3 |  |  | 300.4 |  |  |
Junior Subordinated Notes |  | 2025-2054 |  | 5.67% |  | 3.88%-7.05% |  | 2.03%-5.70% |  | 2,579.1 |  |  | 2,388.1 |  |  |
Other Long-term Debt |  | 2025-2059 |  | 5.60% |  | 3.00%-13.72% |  | 3.00%-13.72% |  | 377.3 |  |  | 1,341.5 |  |  |
Total Long-term Debt Outstanding |  |  |  |  |  |  |  |  |  | $ | 42,642.8 |  |  | $ | 40,143.2 |  |  |
AEP Texas |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Unsecured Notes |  | 2025-2052 |  | 4.39% |  | 2.10%-6.76% |  | 2.10%-6.76% |  | $ | 5,873.8 |  |  | $ | 5,027.2 |  |  |
Pollution Control Bonds (a) |  | 2029-2030 (b) |  | 3.88% |  | 2.60%-4.55% |  | 2.60%-4.55% |  | 440.3 |  |  | 440.3 |  |  |
Securitization Bonds |  | 2025-2029 (d) |  | 2.27% |  | 2.06%-2.29% |  | 2.06%-2.84% |  | 126.8 |  |  | 221.8 |  |  |
Other Long-term Debt |  | 2059 |  | 4.50% |  | 4.50% |  | 4.50%-6.71% |  | 0.7 |  |  | 200.5 |  |  |
Total Long-term Debt Outstanding |  |  |  |  |  |  |  |  |  | $ | 6,441.6 |  |  | $ | 5,889.8 |  |  |
AEPTCo |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Unsecured Notes |  | 2025-2053 |  | 4.12% |  | 2.75%-5.52% |  | 2.75%-5.52% |  | $ | 5,768.1 |  |  | $ | 5,414.4 |  |  |
Total Long-term Debt Outstanding |  |  |  |  |  |  |  |  |  | $ | 5,768.1 |  |  | $ | 5,414.4 |  |  |
APCo |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Unsecured Notes |  | 2025-2050 |  | 4.75% |  | 2.70%-7.00% |  | 2.70%-7.00% |  | $ | 4,984.1 |  |  | $ | 4,584.9 |  |  |
Pollution Control Bonds (a) |  | 2025-2036 (b) |  | 2.95% |  | 0.63%-4.22% |  | 0.63%-4.90% |  | 429.9 |  |  | 430.0 |  |  |
Securitization Bonds |  | 2028 (d) |  | 3.77% |  | 3.77% |  | 3.77% |  | 119.8 |  |  | 147.0 |  |  |
Other Long-term Debt |  | 2025-2026 |  | 5.84% |  | 5.75%-13.72% |  | 6.46%-13.72% |  | 126.5 |  |  | 426.4 |  |  |
Total Long-term Debt Outstanding |  |  |  |  |  |  |  |  |  | $ | 5,660.3 |  |  | $ | 5,588.3 |  |  |
I&M |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Unsecured Notes |  | 2028-2053 |  | 4.52% |  | 3.25%-6.05% |  | 3.25%-6.05% |  | $ | 2,845.2 |  |  | $ | 2,843.6 |  |  |
Pollution Control Bonds (a) |  | 2025 (b) |  | 2.49% |  | 0.75%-3.05% |  | 0.75%-3.05% |  | 189.9 |  |  | 189.4 |  |  |
Notes Payable – Nonaffiliated (c) |  | 2025-2028 |  | 5.78% |  | 0.93%-6.41% |  | 0.93%-6.59% |  | 142.7 |  |  | 163.3 |  |  |
Spent Nuclear Fuel Obligation (e) |  |  |  |  |  |  |  |  |  | 316.3 |  |  | 300.4 |  |  |
Other Long-term Debt |  | 2025 |  | 6.00% |  | 6.00% |  | 6.00% |  | 0.2 |  |  | 2.7 |  |  |
Total Long-term Debt Outstanding |  |  |  |  |  |  |  |  |  | $ | 3,494.3 |  |  | $ | 3,499.4 |  |  |
OPCo |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Unsecured Notes |  | 2030-2051 |  | 4.16% |  | 1.63%-6.60% |  | 1.63%-6.60% |  | $ | 3,715.7 |  |  | $ | 3,366.8 |  |  |
Total Long-term Debt Outstanding |  |  |  |  |  |  |  |  |  | $ | 3,715.7 |  |  | $ | 3,366.8 |  |  |
PSO |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Unsecured Notes |  | 2025-2051 |  | 4.29% |  | 2.20%-6.63% |  | 2.20%-6.63% |  | $ | 2,854.2 |  |  | $ | 2,257.8 |  |  |
Other Long-term Debt |  | 2027 |  | 3.00% |  | 3.00% |  | 3.00%-6.71% |  | 1.4 |  |  | 126.8 |  |  |
Total Long-term Debt Outstanding |  |  |  |  |  |  |  |  |  | $ | 2,855.6 |  |  | $ | 2,384.6 |  |  |
SWEPCo |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Unsecured Notes |  | 2026-2051 |  | 3.73% |  | 1.65%-6.20% |  | 1.65%-6.20% |  | $ | 3,649.4 |  |  | $ | 3,646.9 |  |  |
Securitization Bonds |  | 2039 (d) |  | 4.88% |  | 4.88% |  | —% |  | 331.4 |  |  | — |  |  |
Total Long-term Debt Outstanding |  |  |  |  |  |  |  |  |  | $ | 3,980.8 |  |  | $ | 3,646.9 |  |  |
(a)For certain series of Pollution Control Bonds, interest rates are subject to periodic adjustment. Certain series may be purchased on demand at periodic interest adjustment dates. Letters of credit from banks and insurance policies support certain series. Consequently, these bonds have been classified for maturity purposes as Long-term Debt Due Within One Year - Nonaffiliated on the balance sheets. (b)Certain Pollution Control Bonds are subject to redemption earlier than the maturity date. (c)Notes payable represent outstanding promissory notes issued under term loan agreements and credit agreements with a number of banks and other financial institutions. At expiration, all notes then issued and outstanding are due and payable. Interest rates are both fixed and variable. Variable rates generally relate to specified short-term interest rates. (d)Dates represent the scheduled final payment dates for the securitization bonds. The legal maturity date is one to two years later. These bonds have been classified for maturity and repayment purposes based on the scheduled final payment date. (e)Spent Nuclear Fuel Obligation consists of a liability along with accrued interest for disposal of SNF. See “Spent Nuclear Fuel Disposal” section of Note 6 for additional information. The following details long-term debt outstanding as of December 31, 2024 and 2023: Long-term Debt
|  |  |  | Weighted-Average |  | Interest Rate Ranges as of |  | Outstanding as of
|  |  |  | Interest Rate as of |  | December 31, |  | December 31,
Type of Debt |  | Maturity |  | December 31, 2024 |  | 2024 |  | 2023 |  | 2024 |  | 2023
|  |  |  |  |  |  |  |  |  | (in millions)
Senior Unsecured Notes |  | 2025-2050 |  | 4.29% |  | 1.00%-5.95% |  | 1.00%-5.95% |  | $ | 5,290.0 |  |  | $ | 5,265.0 |
Pollution Control Bonds |  | 2026-2029 (a) |  | 3.12% |  | 2.40%-3.75% |  | 1.90%-2.60% |  | 536.8 |  |  | 537.8 |
Junior Subordinated Notes |  | 2025-2027 |  | 5.67% |  | 3.88%-7.05% |  | 2.03%-5.70% |  | 2,579.0 |  |  | 2,388.1 |
Total Long-term Debt Outstanding |  |  |  |  |  |  |  |  |  | 8,405.8 |  |  | 8,190.9 |
Long-term Debt Due Within One Year |  |  |  |  |  |  |  |  |  | 1,281.5 |  |  | 1,104.0 |
Long-term Debt |  |  |  |  |  |  |  |  |  | $ | 7,124.3 |  |  | $ | 7,086.9 |
(a)Certain Pollution Control Bonds are subject to redemption earlier than the maturity date. Long-term debt outstanding as of December 31, 2024 is payable as follows:
| 2025 |  | 2026 |  | 2027 |  | 2028 |  | 2029 |  | After 2029 |  | Total
| (in millions)
Principal Amount (a) | $ | 1,281.5 |  |  | $ | 50.0 |  |  | $ | 1,758.3 |  |  | $ | 930.4 |  |  | $ | 1,694.5 |  |  | $ | 2,750.0 |  |  | $ | 8,464.7 |
Unamortized Discount, Net and Debt Issuance Costs |  |  |  |  |  |  |  |  |  |  |  |  | (58.9) |
Total Long-term Debt Outstanding |  |  |  |  |  |  |  |  |  |  |  |  | $ | 8,405.8 |
(a)Amounts reflect the impact of fair value hedge accounting. See “Accounting for Fair Value Hedging Strategies” section of Note 10 included in the 2024 Annual Report for additional information.
Schedule of Maturities of Long-term Debt | As of December 31, 2024, outstanding long-term debt was payable as follows:
|  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
2025 |  | $ | 3,335.0 |  |  | $ | 324.5 |  |  | $ | 90.0 |  |  | $ | 798.6 |  |  | $ | 269.2 |  |  | $ | — |  |  | $ | 125.6 |  |  | $ | 22.7 |
2026 |  | 1,864.4 |  |  | 75.0 |  |  | 425.0 |  |  | 30.9 |  |  | 43.6 |  |  | — |  |  | 50.6 |  |  | 916.6 |
2027 |  | 2,283.6 |  |  | 25.6 |  |  | — |  |  | 355.6 |  |  | 13.7 |  |  | — |  |  | 0.3 |  |  | 17.4 |
2028 |  | 2,592.0 |  |  | 526.2 |  |  | 60.0 |  |  | 117.8 |  |  | 356.5 |  |  | — |  |  | — |  |  | 593.3 |
2029 |  | 2,694.0 |  |  | 627.4 |  |  | 55.0 |  |  | — |  |  | — |  |  | — |  |  | 100.0 |  |  | 19.2 |
After 2029 |  | 30,212.8 |  |  | 4,912.8 |  |  | 5,201.0 |  |  | 4,400.0 |  |  | 2,841.3 |  |  | 3,750.0 |  |  | 2,600.0 |  |  | 2,442.4 |
Principal Amount |  | 42,981.8 |  |  | 6,491.5 |  |  | 5,831.0 |  |  | 5,702.9 |  |  | 3,524.3 |  |  | 3,750.0 |  |  | 2,876.5 |  |  | 4,011.6 |
Unamortized Discount, Net and Debt Issuance Costs |  | (339.0) |  |  | (49.9) |  |  | (62.9) |  |  | (42.6) |  |  | (30.0) |  |  | (34.3) |  |  | (20.9) |  |  | (30.8) |
Total Long-term Debt Outstanding |  | $ | 42,642.8 |  |  | $ | 6,441.6 |  |  | $ | 5,768.1 |  |  | $ | 5,660.3 |  |  | $ | 3,494.3 |  |  | $ | 3,715.7 |  |  | $ | 2,855.6 |  |  | $ | 3,980.8 |
Schedule of Dividend Repayment Restrictions | As of December 31, 2024, the amount of any such restrictions were as follows:
|  | AEP |  | AEP Texas |  | AEPTCo |  | APCo |  | I&M |  | OPCo |  | PSO |  | SWEPCo
|  | (in millions)
Restricted Retained Earnings |  | $ | 3,247.9 |  | (a) | $ | 1,109.2 |  |  | $ | — |  |  | $ | 539.2 |  |  | $ | 707.0 |  |  | $ | — |  |  | $ | 267.7 |  |  | $ | 366.5 |
(a) Includes the restrictions of consolidated and non-consolidated subsidiaries.
Schedule of Short-term Debt | AEP’s outstanding short-term debt was as follows:
|  |  |  | December 31,
|  |  |  | 2024 |  | 2023
Company |  | Type of Debt |  | Outstanding Amount |  | Interest Rate (a) |  | Outstanding Amount |  | Interest Rate (a)
|  |  |  | (in millions) |  |  |  | (in millions) |  |
AEP |  | Securitized Debt for Receivables (b) |  | $ | 900.0 |  |  | 4.73 | % |  | $ | 888.0 |  |  | 5.65 | %
AEP |  | Commercial Paper |  | 1,618.3 |  |  | 4.70 | % |  | 1,937.9 |  |  | 5.69 | %
SWEPCo |  | Notes Payable |  | 5.5 |  |  | 6.69 | % |  | 4.3 |  |  | 7.71 | %
|  | Total Short-term Debt |  | $ | 2,523.8 |  |  |  |  | $ | 2,830.2 |  |  |
(a) Weighted-average rate of all borrowings outstanding as of December 31, 2024 and 2023, respectively. (b) Amount of securitized debt for receivables as accounted for under the “Transfers and Servicing” accounting guidance. Parent’s outstanding short-term debt was as follows:
|  | December 31, 2024 |  | December 31, 2023
Type of Debt |  | Outstanding Amount |  | Weighted-Average Interest Rate |  | Outstanding Amount |  | Weighted-Average Interest Rate
|  | (in millions) |  |  |  | (in millions) |  |
Commercial Paper |  | $ | 1,618.3 |  |  | 4.70 | % |  | $ | 1,937.9 |  |  | 5.69 | %
Total Short-term Debt |  | $ | 1,618.3 |  |  |  |  | $ | 1,937.9 |  |  |
Schedule of Utility Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits | The Utility Money Pool participants’ money pool activity and corresponding authorized borrowing limits are described in the following tables: Year Ended December 31, 2024:
|  | Maximum |  |  |  | Average |  |  |  | Net Loans to |  |  |
|  | Borrowings |  | Maximum |  | Borrowings |  | Average |  | (Borrowings from) |  | Authorized |
|  | from the |  | Loans to the |  | from the |  | Loans to the |  | the Utility Money |  | Short-term |
|  | Utility |  | Utility |  | Utility |  | Utility |  | Pool as of |  | Borrowing |
Company |  | Money Pool |  | Money Pool |  | Money Pool |  | Money Pool |  | December 31, 2024 |  | Limit |
|  | (in millions) |
AEP Texas |  | $ | 374.6 |  |  | $ | 274.3 |  |  | $ | 233.8 |  |  | $ | 165.1 |  |  | $ | (284.9) |  |  | $ | 600.0 |  |
AEPTCo |  | 313.3 |  |  | 332.0 |  |  | 71.8 |  |  | 138.4 |  |  | (72.9) |  |  | 820.0 |  | (a)
APCo |  | 399.5 |  |  | 132.3 |  |  | 102.6 |  |  | 29.7 |  |  | (77.3) |  |  | 750.0 |  |
I&M |  | 135.8 |  |  | 8.4 |  |  | 58.8 |  |  | 3.9 |  |  | (126.8) |  |  | 500.0 |  |
OPCo |  | 310.0 |  |  | 183.4 |  |  | 180.5 |  |  | 94.2 |  |  | 114.9 |  |  | 600.0 |  |
PSO |  | 308.9 |  |  | 314.5 |  |  | 171.4 |  |  | 287.7 |  |  | 232.0 |  |  | 750.0 |  |
SWEPCo |  | 362.2 |  |  | 59.3 |  |  | 249.5 |  |  | 57.3 |  |  | (275.0) |  |  | 750.0 |  |
Year Ended December 31, 2023:
|  | Maximum |  |  |  | Average |  |  |  | Net Loans to |  |  |
|  | Borrowings |  | Maximum |  | Borrowings |  | Average |  | (Borrowings from) |  | Authorized |
|  | from the |  | Loans to the |  | from the |  | Loans to the |  | the Utility Money |  | Short-term |
|  | Utility |  | Utility |  | Utility |  | Utility |  | Pool as of |  | Borrowing |
Company |  | Money Pool |  | Money Pool |  | Money Pool |  | Money Pool |  | December 31, 2023 |  | Limit |
|  | (in millions) |
AEP Texas |  | $ | 477.5 |  |  | $ | 42.0 |  |  | $ | 216.8 |  |  | $ | 12.9 |  |  | $ | (103.7) |  |  | $ | 600.0 |  |
AEPTCo |  | 471.3 |  |  | 309.4 |  |  | 135.6 |  |  | 70.5 |  |  | (62.8) |  |  | 820.0 |  | (a)
APCo |  | 388.6 |  |  | 19.8 |  |  | 283.5 |  |  | 19.0 |  |  | (320.7) |  |  | 750.0 |  |
I&M |  | 475.3 |  |  | 112.2 |  |  | 84.0 |  |  | 44.2 |  |  | (63.3) |  |  | 500.0 |  |
OPCo |  | 485.7 |  |  | 64.7 |  |  | 183.0 |  |  | 40.2 |  |  | (110.5) |  |  | 500.0 |  |
PSO |  | 375.0 |  |  | 121.5 |  |  | 92.5 |  |  | 49.6 |  |  | (54.4) |  |  | 750.0 |  |
SWEPCo |  | 401.6 |  |  | 25.8 |  |  | 150.7 |  |  | 16.5 |  |  | (88.7) |  |  | 750.0 |  |
(a) Amount represents the combined authorized short-term borrowing limit the State Transcos have from FERC or state regulatory commissions.
Schedule of Nonutility Money Pool Activity | The Nonutility Money Pool participants’ money pool activity is described in the following tables: Year Ended December 31, 2024:
|  | Maximum Loans |  | Average Loans |  | Loans to the Nonutility
|  | to the Nonutility |  | to the Nonutility |  | Money Pool as of
Company |  | Money Pool |  | Money Pool |  | December 31, 2024
|  | (in millions)
AEP Texas |  | $ | 7.2 |  |  | $ | 7.1 |  |  | $ | 7.2 |
SWEPCo |  | 2.9 |  |  | 2.6 |  |  | 2.3 |
Year Ended December 31, 2023:
|  | Maximum Loans |  | Average Loans |  | Loans to the Nonutility
|  | to the Nonutility |  | to the Nonutility |  | Money Pool as of
Company |  | Money Pool |  | Money Pool |  | December 31, 2023
|  | (in millions)
AEP Texas |  | $ | 7.1 |  |  | $ | 6.9 |  |  | $ | 7.1 |
SWEPCo |  | 2.8 |  |  | 2.4 |  |  | 2.2 |
Schedule of Direct Borrowing Activity | AEPTCo’s direct financing activities with AEP and corresponding authorized borrowing limits are described in the following tables: Year Ended December 31, 2024:
|  |  |  |  |  |  |  |  |  | Borrowings |  |  |  | Authorized
|  | Maximum |  | Maximum |  | Average |  | Average |  | from AEP |  | Loans to |  | Short-term
|  | Borrowings |  | Loans |  | Borrowings |  | Loans |  | as of |  | AEP as of |  | Borrowing
Company |  | from AEP |  | to AEP |  | from AEP |  | to AEP |  | December 31, 2024 |  | December 31, 2024 |  | Limit (a)
|  | (in millions)
AEPTCo Parent |  | $ | 49.4 |  |  | $ | 148.5 |  |  | $ | 14.9 |  |  | $ | 57.0 |  |  | $ | — |  |  | $ | 20.4 |  |  | $ | — |
SWTCo |  | 1.9 |  |  | — |  |  | 1.8 |  |  | — |  |  | 1.8 |  |  | — |  |  | 50.0 |
Year Ended December 31, 2023:
|  |  |  |  |  |  |  |  |  | Borrowings |  |  |  | Authorized
|  | Maximum |  | Maximum |  | Average |  | Average |  | from AEP |  | Loans to |  | Short-term
|  | Borrowings |  | Loans |  | Borrowings |  | Loans |  | as of |  | AEP as of |  | Borrowing
Company |  | from AEP |  | to AEP |  | from AEP |  | to AEP |  | December 31, 2023 |  | December 31, 2023 |  | Limit (a)
|  | (in millions)
AEPTCo Parent |  | $ | 42.7 |  |  | $ | 158.1 |  |  | $ | 18.0 |  |  | $ | 64.2 |  |  | $ | 42.7 |  |  | $ | — |  |  | $ | — |
SWTCo |  | 1.6 |  |  | — |  |  | 1.6 |  |  | — |  |  | 1.7 |  |  | — |  |  | 50.0 |
(a) Amount represents the authorized short-term borrowing limit from FERC or state regulatory agencies not otherwise included in the utility money pool above. AEPTCo Parent has no short-term borrowing limit.
Schedule of Maximum and Minimum Interest Rates for Funds Either Borrowed from or Loaned to Utility Money Pool | The maximum and minimum interest rates for funds either borrowed from or loaned to the Utility Money Pool are summarized in the following table:
| Years Ended December 31,
| 2024 |  | 2023 |  | 2022
Maximum Interest Rate | 5.79 | % |  | 5.81 | % |  | 5.28 | %
Minimum Interest Rate | 4.74 | % |  | 4.66 | % |  | 0.10 | %
Schedule of Average Interest Rates for Funds Borrowed from and Loaned to Utility Money Pool | The average interest rates for funds borrowed from and loaned to the Utility Money Pool are summarized in the following table:
|  | Average Interest Rate for Funds Borrowed from the Utility Money Pool for the Years Ended December 31, |  | Average Interest Rate for Funds Loaned to the Utility Money Pool for the Years Ended December 31,
Company |  | 2024 |  | 2023 |  | 2022 |  | 2024 |  | 2023 |  | 2022
AEP Texas |  | 5.48 | % |  | 5.46 | % |  | 1.08 | % |  | 5.45 | % |  | 5.71 | % |  | 1.99 | %
AEPTCo |  | 5.51 | % |  | 5.41 | % |  | 1.81 | % |  | 5.50 | % |  | 5.56 | % |  | 2.47 | %
APCo |  | 5.51 | % |  | 5.54 | % |  | 2.34 | % |  | 5.41 | % |  | 5.54 | % |  | 2.39 | %
I&M |  | 5.40 | % |  | 5.14 | % |  | 2.57 | % |  | 5.44 | % |  | 5.57 | % |  | 2.20 | %
OPCo |  | 5.70 | % |  | 5.43 | % |  | 3.51 | % |  | 5.20 | % |  | 5.60 | % |  | 1.22 | %
PSO |  | 5.50 | % |  | 5.51 | % |  | 2.65 | % |  | 4.79 | % |  | 5.35 | % |  | 0.75 | %
SWEPCo |  | 5.41 | % |  | 5.34 | % |  | 2.80 | % |  | 4.78 | % |  | 5.72 | % |  | 0.55 | %
Schedule of Maximum, Minimum and Average Interest Rates for Funds Borrowed from and Loaned to the Nonutility Money Pool | Maximum, minimum and average interest rates for funds loaned to the Nonutility Money Pool are summarized in the following table:
|  |  |  | Maximum Interest Rate |  | Minimum Interest Rate |  | Average Interest Rate
Year Ended |  |  |  | for Funds Loaned to |  | for Funds Loaned to |  | for Funds Loaned to
December 31, |  | Company |  | the Nonutility Money Pool |  | the Nonutility Money Pool |  | the Nonutility Money Pool
2024 |  | AEP Texas |  | 5.79 | % |  | 4.74 | % |  | 5.46 | %
2024 |  | SWEPCo |  | 5.79 | % |  | 4.74 | % |  | 5.45 | %
2023 |  | AEP Texas |  | 5.81 | % |  | 4.66 | % |  | 5.54 | %
2023 |  | SWEPCo |  | 5.81 | % |  | 4.66 | % |  | 5.56 | %
2022 |  | AEP Texas |  | 5.28 | % |  | 0.46 | % |  | 2.23 | %
2022 |  | SWEPCo |  | 5.28 | % |  | 0.46 | % |  | 2.23 | %
Schedule of Maximum Minimum and Average Interest Rates for Funds Borrowed from and Loaned to AEP | AEPTCo Parent’s and SWTCo’s maximum, minimum and average interest rates for funds either borrowed from or loaned to AEP are summarized in the following table:
|  | Maximum |  | Minimum |  | Maximum |  | Minimum |  | Average |  | Average
|  | Interest Rate |  | Interest Rate |  | Interest Rate |  | Interest Rate |  | Interest Rate |  | Interest Rate
|  | for Funds |  | for Funds |  | for Funds |  | for Funds |  | for Funds |  | for Funds
Year Ended |  | Borrowed from |  | Borrowed from |  | Loaned to |  | Loaned to |  | Borrowed from |  | Loaned to
December 31, |  | AEP |  | AEP |  | AEP |  | AEP |  | AEP |  | AEP
2024 |  | 5.79 | % |  | 4.66 | % |  | 5.79 | % |  | 4.66 | % |  | 5.53 | % |  | 5.56 | %
2023 |  | 5.81 | % |  | 4.53 | % |  | 5.81 | % |  | 4.53 | % |  | 5.56 | % |  | 5.51 | %
2022 |  | 5.28 | % |  | 0.46 | % |  | 5.28 | % |  | 0.46 | % |  | 2.08 | % |  | 2.07 | %
Schedule of Interest Expense Incurred For Funds Borrowed from Utility Money Pool | The Registrant Subsidiaries incurred interest expense for all short-term borrowing activities as follows:
|  | Years Ended December 31,
Company |  | 2024 |  | 2023 |  | 2022
|  | (in millions)
AEP Texas |  | $ | 6.7 |  |  | $ | 10.8 |  |  | $ | 0.9 |
AEPTCo |  | 4.3 |  |  | 7.6 |  |  | 3.5 |
APCo |  | 6.1 |  |  | 16.8 |  |  | 5.6 |
I&M |  | 4.3 |  |  | 3.2 |  |  | 2.9 |
OPCo |  | 3.7 |  |  | 9.7 |  |  | 2.3 |
PSO |  | 8.9 |  |  | 2.3 |  |  | 5.5 |
SWEPCo |  | 13.6 |  |  | 7.9 |  |  | 4.9 |
Schedule of Interest Income Earned for Funds Loaned to Utility Money Pool | The Registrant Subsidiaries earned interest income for all short-term lending activities as follows:
|  | Years Ended December 31,
Company |  | 2024 |  | 2023 |  | 2022
|  | (in millions)
AEP Texas |  | $ | 4.4 |  |  | $ | 0.1 |  |  | $ | 2.6 |
AEPTCo |  | 10.5 |  |  | 7.0 |  |  | 1.6 |
APCo |  | 1.6 |  |  | 1.1 |  |  | 2.8 |
I&M |  | — |  |  | 2.4 |  |  | 0.5 |
OPCo |  | 3.2 |  |  | 0.1 |  |  | 0.4 |
PSO |  | 1.0 |  |  | 1.5 |  |  | 0.3 |
SWEPCo |  | 0.2 |  |  | 0.2 |  |  | 0.2 |
Schedule of Comparative Accounts Receivable Information | Accounts receivable information for AEP Credit was as follows:
| Years Ended December 31,
| 2024 |  | 2023 |  | 2022
| (dollars in millions)
Effective Interest Rates on Securitization of Accounts Receivable | 5.39 | % |  | 5.33 | % |  | 1.84 | %
Net Uncollectible Accounts Receivable Written Off | $ | 29.4 |  |  | $ | 30.7 |  |  | $ | 29.5 |
Schedule of Customer Accounts Receivable Managed Portfolio |
| December 31,
| 2024 |  | 2023
| (in millions)
Accounts Receivable Retained Interest and Pledged as Collateral Less Uncollectible Accounts | $ | 1,117.0 |  |  | $ | 1,207.4 |
Short-term – Securitized Debt of Receivables | 900.0 |  |  | 888.0 |
Delinquent Securitized Accounts Receivable | 56.2 |  |  | 52.2 |
Bad Debt Reserves Related to Securitization | 44.5 |  |  | 42.0 |
Unbilled Receivables Related to Securitization | 335.5 |  |  | 409.8 |
Schedule of Accounts Receivable and Accrued Unbilled Revenues | The amount of accounts receivable and accrued unbilled revenues under the sale of receivables agreement were:
|  | December 31,
Company |  | 2024 |  | 2023
|  | (in millions)
APCo |  | $ | 192.7 |  |  | $ | 184.6 |
I&M |  | 160.5 |  |  | 156.4 |
OPCo |  | 470.7 |  |  | 541.7 |
PSO |  | 111.4 |  |  | 134.6 |
SWEPCo |  | 153.5 |  |  | 168.3 |
Schedule of Fees Paid to AEP Credit for Customer Accounts Receivable Sold | The fees paid to AEP Credit for customer accounts receivable sold were:
|  | Years Ended December 31,
Company |  | 2024 |  | 2023 |  | 2022
|  | (in millions)
APCo |  | $ | 15.5 |  |  | $ | 16.9 |  |  | $ | 9.4 |
I&M |  | 15.4 |  |  | 16.3 |  |  | 9.7 |
OPCo |  | 29.7 |  |  | 29.5 |  |  | 29.8 |
PSO |  | 14.2 |  |  | 15.3 |  |  | 7.4 |
SWEPCo |  | 17.6 |  |  | 18.5 |  |  | 9.4 |
Schedule of Proceeds on Sale of Receivables to AEP Credit | The proceeds on the sale of receivables to AEP Credit were:
|  | Years Ended December 31,
Company |  | 2024 |  | 2023 |  | 2022
|  | (in millions)
APCo |  | $ | 1,953.7 |  |  | $ | 1,819.8 |  |  | $ | 1,552.9 |
I&M |  | 2,105.3 |  |  | 2,054.8 |  |  | 2,045.6 |
OPCo |  | 3,197.8 |  |  | 3,339.3 |  |  | 3,101.3 |
PSO |  | 1,781.3 |  |  | 1,944.5 |  |  | 1,809.5 |
SWEPCo |  | 1,838.1 |  |  | 1,866.4 |  |  | 1,858.4 |

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