Revenues (Tables)

6 Months Ended

Jun. 30, 2025

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

PSCo’s operating revenues consisted of the following:


						Three Months Ended June 30, 2025
(Millions of Dollars)						Electric						Natural Gas						All Other						Total
Major revenue types
Revenue from contracts with customers:
Residential						$	299					$	145					$	1					$	445
C&I						448						67						7						522
Other						13						—						—						13
Total retail						760						212						8						980
Wholesale						49						—						—						49
Transmission						26						—						—						26
Other						16						37						—						53
Total revenue from contracts with customers						851						249						8						1,108
Alternative revenue and other						107						11						—						118
Total revenues						$	958					$	260					$	8					$	1,226


						Three Months Ended June 30, 2024
(Millions of Dollars)						Electric						Natural Gas						All Other						Total
Major revenue types
Revenue from contracts with customers:
Residential						$	301					$	142					$	—					$	443
C&I						427						64						8						499
Other						13						—						—						13
Total retail						741						206						8						955
Wholesale						51						—						—						51
Transmission						21						—						—						21
Other						18						30						—						48
Total revenue from contracts with customers						831						236						8						1,075
Alternative revenue and other						60						8						—						68
Total revenues						$	891					$	244					$	8					$	1,143

						Six Months Ended June 30, 2025
(Millions of Dollars)						Electric						Natural Gas						All Other						Total
Major revenue types
Revenue from contracts with customers:
Residential						$	627					$	544					$	1					$	1,172
C&I						835						224						19						1,078
Other						25						—						—						25
Total retail						1,487						768						20						2,275
Wholesale						110						—						—						110
Transmission						56						—						—						56
Other						29						85						—						114
Total revenue from contracts with customers						1,682						853						20						2,555
Alternative revenue and other						214						34						—						248
Total revenues						$	1,896					$	887					$	20					$	2,803


						Six Months Ended June 30, 2024
(Millions of Dollars)						Electric						Natural Gas						All Other						Total
Major revenue types
Revenue from contracts with customers:
Residential						$	630					$	542					$	3					$	1,175
C&I						845						226						18						1,089
Other						27						—						—						27
Total retail						1,502						768						21						2,291
Wholesale						113						—						—						113
Transmission						45						—						—						45
Other						32						70						—						102
Total revenue from contracts with customers						1,692						838						21						2,551
Alternative revenue and other						122						19						—						141
Total revenues						$	1,814					$	857					$	21					$	2,692