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Expenses by Nature (Tables)

12 Months Ended

Dec. 31, 2024

Analysis of income and expense [abstract]

Disclosure of expenses classified by nature

Fuel and purchased power and OM&A expenses classified by nature are as follows:



Year ended Dec. 31	2024	2023(1)		2022
		Fuel and purchased power	OM&A	Fuel and purchased power	OM&A	Fuel and purchased power	OM&A
Gas fuel costs		369	—	384	—	578	—
Coal fuel costs		123	—	177	—	146	—
Royalty, land lease, other direct costs		28	—	25	—	25	—
Purchased power		419	—	474	—	514	—

Salaries and benefits		—	296	—	254	—	263
Other operating expenses(1)		—	359	—	285	—	258
Total		939	655	1,060	539	1,263	521

(1)Included in OM&A costs for 2023 was $14 million related to the write-down of parts and material inventory related to our natural-gas-fired facilities.