Revenues (Tables)

9 Months Ended

Sep. 30, 2023

Revenue from Contract with Customer [Abstract]

Disaggregation of revenue

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

	Three Months Ended Sept. 30, 2023
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	79	$	8	$	—	$	87
C&I	136		5		—		141
Other	2		—		1		3
Total retail	217		13		1		231
Interchange and other	43		1		—		44
Total revenue from contracts with customers	260		14		1		275
Alternative revenue and other	3		1		—		4
Total revenues	$	263	$	15	$	1	$	279

	Three Months Ended Sept. 30, 2022
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	78	$	9	$	—	$	87
C&I	139		9		—		148
Other	2		—		—		2
Total retail	219		18		—		237
Interchange and other	52		1		—		53
Total revenue from contracts with customers	271		19		—		290
Alternative revenue and other	3		1		—		4
Total revenues	$	274	$	20	$	—	$	294

	Nine Months Ended Sept. 30, 2023
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	229	$	62	$	—	$	291
C&I	378		48		—		426
Other	6		—		1		7
Total retail	613		110		1		724
Interchange and other	131		2		—		133
Total revenue from contracts with customers	744		112		1		857
Alternative revenue and other	9		4		—		13
Total revenues	$	753	$	116	$	1	$	870

	Nine Months Ended Sept. 30, 2022
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	226	$	69	$	—	$	295
C&I	374		58		—		432
Other	6		—		—		6
Total retail	606		127		—		733
Interchange and other	153		3		—		156
Total revenue from contracts with customers	759		130		—		889
Alternative revenue and other	8		3		—		11
Total revenues	$	767	$	133	$	—	$	900