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v3.22.0.1

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Operating revenues |  |
Sales of Electricity | $ 2,538 | $ 2,270
Other revenue | 45 | 34
Revenues | 2,583 | 2,304
Operating expenses |  |
Fuel | 466 | 369
Purchased power | 369 | 206
Operating and maintenance | 780 | 715
Depreciation and amortization | 510 | 378
Tax equivalents | 133 | 121
Total operating expenses | 2,258 | 1,789
Operating income | 325 | 515
Other income (expense), net | 14 | 15
Defined Benefit Plan, Other Cost (Credit) | 65 | 65
Interest expense |  |
Interest expense | 263 | 281
Net income (loss) | $ 11 | $ 184

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