Revenues

3 Months Ended

Mar. 31, 2023

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, 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	50		—		50
Other	(3)		1		(2)
Total revenue from contracts with customers	251		76		327
Alternative revenue and other	3		1		4
Total revenues	$	254	$	77	$	331

	Three Months Ended March 31, 2022
(Millions of Dollars)	Electric		Natural Gas		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	81	$	42	$	123
C&I	116		34		150
Other	2		—		2
Total retail	199		76		275
Interchange	47		—		47
Other	1		1		2
Total revenue from contracts with customers	247		77		324
Alternative revenue and other	3		1		4
Total revenues	$	250	$	78	$	328