v3.26.3
CONDENSED STATEMENTS OF INCOME - PSO - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
REVENUES        
TOTAL REVENUES $ 6,832 $ 6,011 $ 18,297 $ 16,561
EXPENSES        
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation 2,087 1,981 5,808 5,375
Other Operation 1,028 798 2,592 2,088
Maintenance 447 405 1,302 1,114
Depreciation and Amortization 1,025 879 2,842 2,566
Taxes Other Than Income Taxes 433 426 1,303 1,213
TOTAL EXPENSES 5,020 4,489 13,878 12,356
OPERATING INCOME 1,812 1,522 4,419 4,205
Other Income (Expense):        
Allowance for Equity Funds Used During Construction 81 59 226 173
Non-Service Cost Components of Net Periodic Benefit Cost 25 34 82 104
Interest Expense (606) (509) (1,743) (1,493)
INCOME BEFORE INCOME TAX EXPENSE (BENEFIT) 1,318 1,118 3,010 3,024
Income Tax Expense (Benefit) 125 139 221 13
PUBLIC SERVICE COMPANY OF OKLAHOMA        
REVENUES        
TOTAL REVENUES 868 694 1,828 1,557
EXPENSES        
Purchased Electricity, Fuel and Other Consumables Used for Electric Generation 231 295 575 596
Other Operation 145 139 410 363
Maintenance 35 37 115 95
Depreciation and Amortization 136 67 283 203
Taxes Other Than Income Taxes 24 21 69 59
TOTAL EXPENSES 571 559 1,452 1,316
OPERATING INCOME 297 135 376 241
Other Income (Expense):        
Interest Income 1 0 1 2
Allowance for Equity Funds Used During Construction 4 1 9 7
Non-Service Cost Components of Net Periodic Benefit Cost 1 2 0 6
Interest Expense (48) (40) (134) (99)
INCOME BEFORE INCOME TAX EXPENSE (BENEFIT) 255 98 252 157
Income Tax Expense (Benefit) 21 (32) (51) (64)
NET INCOME 234 130 303 221
Electric Generation, Transmission and Distribution | PUBLIC SERVICE COMPANY OF OKLAHOMA        
REVENUES        
TOTAL REVENUES 864 686 1,815 1,542
Sales to AEP Affiliates | PUBLIC SERVICE COMPANY OF OKLAHOMA        
REVENUES        
TOTAL REVENUES 2 4 10 6
Other Revenues        
REVENUES        
TOTAL REVENUES 134 126 398 416
Other Revenues | PUBLIC SERVICE COMPANY OF OKLAHOMA        
REVENUES        
TOTAL REVENUES $ 2 $ 4 $ 3 $ 9