Revenues

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Revenues

Revenue is classified by the type of goods/services rendered and market/customer type. NSP-Wisconsin’s operating revenues consisted of the following:

	Three Months Ended March 31, 2024
(Millions of Dollars)	Electric		Natural Gas		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	77	$	30	$	107
C&I	118		22		140
Other	2		—		2
Total retail	197		52		249
Interchange and other	56		1		57
Total revenue from contracts with customers	253		53		306
Alternative revenue and other	3		1		4
Total revenues	$	256	$	54	$	310

	Three Months Ended March 31, 2023
(Millions of Dollars)	Electric		Natural Gas		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	82	$	41	$	123
C&I	120		34		154
Other	2		—		2
Total retail	204		75		279
Interchange and other	47		1		48
Total revenue from contracts with customers	251		76		327
Alternative revenue and other	3		1		4
Total revenues	$	254	$	77	$	331