Revenues

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenues

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

	Three Months Ended June 30, 2021
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	272	$	204	$	3	$	479
C&I	426		81		6		513
Other	13		—		—		13
Total retail	711		285		9		1,005
Wholesale	48		—		—		48
Transmission	19		—		—		19
Other	14		38		—		52
Total revenue from contracts with customers	792		323		9		1,124
Alternative revenue and other	35		15		—		50
Total revenues	$	827	$	338	$	9	$	1,174

	Three Months Ended June 30, 2020
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	244	$	118	$	3	$	365
C&I	351		39		6		396
Other	12		—		—		12
Total retail	607		157		9		773
Wholesale	42		—		—		42
Transmission	14		—		—		14
Other	14		23		—		37
Total revenue from contracts with customers	677		180		9		866
Alternative revenue and other	38		6		1		45
Total revenues	$	715	$	186	$	10	$	911

	Six Months Ended June 30, 2021
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	518	$	443	$	6	$	967
C&I	752		165		15		932
Other	25		—		—		25
Total retail	1,295		608		21		1,924
Wholesale	135		—		—		135
Transmission	37		—		—		37
Other	23		83		—		106
Total revenue from contracts with customers	1,490		691		21		2,202
Alternative revenue and other	70		62		1		133
Total revenues	$	1,560	$	753	$	22	$	2,335

	Six Months Ended June 30, 2020
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	481	$	335	$	6	$	822
C&I	704		117		15		836
Other	24		—		—		24
Total retail	1,209		452		21		1,682
Wholesale	89		—		—		89
Transmission	27		—		—		27
Other	29		53		—		82
Total revenue from contracts with customers	1,354		505		21		1,880
Alternative revenue and other	73		13		2		88
Total revenues	$	1,427	$	518	$	23	$	1,968