Revenues (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Disaggregation of revenue

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

	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

	Three Months Ended March 31, 2021
(Millions of Dollars)	Electric		Natural Gas		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	71	$	31	$	102
C&I	102		24		126
Other	2		—		2
Total retail	175		55		230
Interchange	46		—		46
Other	—		1		1
Total revenue from contracts with customers	221		56		277
Alternative revenue and other	3		1		4
Total revenues	$	224	$	57	$	281