Revenues (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

PSCo’s operating revenues consisted of the following:

	Three Months Ended Sept. 30, 2021
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	386	$	97	$	3	$	486
C&I	510		38		7		555
Other	12		—		—		12
Total retail	908		135		10		1,053
Wholesale	60		—		—		60
Transmission	23		—		—		23
Other	15		38		—		53
Total revenue from contracts with customers	1,006		173		10		1,189
Alternative revenue and other	42		4		2		48
Total revenues	$	1,048	$	177	$	12	$	1,237

	Three Months Ended Sept. 30, 2020
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	344	$	95	$	3	$	442
C&I	431		33		5		469
Other	11		—		—		11
Total retail	786		128		8		922
Wholesale	61		—		—		61
Transmission	18		—		—		18
Other	14		24		—		38
Total revenue from contracts with customers	879		152		8		1,039
Alternative revenue and other	37		4		1		42
Total revenues	$	916	$	156	$	9	$	1,081

	Nine Months Ended Sept. 30, 2021
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	904	$	540	$	9	$	1,453
C&I	1,262		203		22		1,487
Other	37		—		—		37
Total retail	2,203		743		31		2,977
Wholesale	195		—		—		195
Transmission	59		—		—		59
Other	37		122		—		159
Total revenue from contracts with customers	2,494		865		31		3,390
Alternative revenue and other	114		65		3		182
Total revenues	$	2,608	$	930	$	34	$	3,572

	Nine Months Ended Sept. 30, 2020
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	825	$	431	$	9	$	1,265
C&I	1,135		150		20		1,305
Other	35		—		—		35
Total retail	1,995		581		29		2,605
Wholesale	150		—		—		150
Transmission	45		—		—		45
Other	43		77		—		120
Total revenue from contracts with customers	2,233		658		29		2,920
Alternative revenue and other	110		16		3		129
Total revenues	$	2,343	$	674	$	32	$	3,049