CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2023		Sep. 30, 2022		Sep. 30, 2023	Sep. 30, 2022
Operating revenues
Electric, non-affiliates	$ 213		$ 223		$ 602	$ 617
Electric, affiliates	50		51		151	150
Natural gas	15		20		116	133
Total operating revenues	279	[1]	294	[1]	870	900
Operating expenses
Electric fuel and purchased power, non-affiliates	3		5		10	13
Purchased power, affiliates	109		115		305	343
Cost of natural sold and transported	6		10		61	75
Operating and maintenance expenses	58		53		173	160
Conservation program expenses	3		4		10	10
Depreciation and amortization	43		39		126	117
Taxes (other than income taxes)	8		8		25	23
Total operating expenses	230		234		710	741
Operating income	49		60		160	159
Other income (expense), net	1		(1)		2	(2)
Allowance for funds used during construction — equity	3		2		7	5
Interest charges and financing costs
Interest charges and other financing costs	14		11		40	33
Allowance for funds used during construction — debt	(1)		(1)		(3)	(2)
Total interest charges and financing costs	13		10		37	31
Income before income taxes	40		51		132	131
Income tax expense	9		11		30	29
Net income	$ 31		$ 40		$ 102	$ 102

[1] Total revenues include $50 million and $51 million of affiliate electric revenue for the three months ended Sept. 30, 2023 and 2022, respectively.