Revenues (Tables)

6 Months Ended

Jun. 30, 2024

Revenue from Contract with Customer [Abstract]

Disaggregation of revenue

NSP-Wisconsin’s operating revenues consisted of the following:

	Three Months Ended June 30, 2024
(Millions of Dollars)	Electric		Natural Gas		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	66	$	12	$	78
C&I	119		8		127
Other	1		—		1
Total retail	186		20		206
Interchange and other	58		1		59
Total revenue from contracts with customers	244		21		265
Alternative revenue and other	2		—		2
Total revenues	$	246	$	21	$	267

	Three Months Ended June 30, 2023
(Millions of Dollars)	Electric		Natural Gas		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	68	$	13	$	81
C&I	122		9		131
Other	2		—		2
Total retail	192		22		214
Interchange and other	41		—		41
Total revenue from contracts with customers	233		22		255
Alternative revenue and other	3		2		5
Total revenues	$	236	$	24	$	260

	Six Months Ended June 30, 2024
(Millions of Dollars)	Electric		Natural Gas		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	143	$	42	$	185
C&I	237		30		267
Other	3		—		3
Total retail	383		72		455
Interchange and other	113		2		115
Total revenue from contracts with customers	496		74		570
Alternative revenue and other	6		1		7
Total revenues	$	502	$	75	$	577

	Six Months Ended June 30, 2023
(Millions of Dollars)	Electric		Natural Gas		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	150	$	54	$	204
C&I	242		43		285
Other	4		—		4
Total retail	396		97		493
Interchange and other	88		1		89
Total revenue from contracts with customers	484		98		582
Alternative revenue and other	6		3		9
Total revenues	$	490	$	101	$	591