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44
PSCo
Station, Location and Unit Fuel Installed
Summer 2010
Net Dependable
Capability (MW)
S
team:
Arapahoe-Denver, Colo., 2 Units ............... Co al 1951-1955 1 53
Cherokee-Denver, Colo., 4 Units ................ Co al 1957-1968 717
Comanche-Pueblo, Colo., 3 Units ............... Coal 1973-2010 1,171(a)
Craig-Craig, Colo., 2 Units ..................... Coal 1979-1980 83(b)
Hayden-Hayden, Colo., 2 Units ................. Coal 1965-19 76 237(c)
Pawnee-Brush, Colo. .......................... Coal 1981 505
Valmont-Boulder, Colo. ........................ Coal 1964 184
Zuni-Denver, Colo., 2 Units .................... Coal 1948-1954 65
Combustion Turbine:
Blue Spruce-Aurora, Colo., 2 Units ............. Natura l Gas 2003 278(e)
Fort St. Vrain-Platteville, Colo., 6 Units ......... Natural Gas 1972-2009 969
Rocky Mountain-Keenesburg, Colo., 3 Units ..... Natural Gas 2004 601(e)
Various locations, 6 Units ...................... Natural Gas Various 174
Hy
dro:
Cabin Creek-Georgetown, Colo.
Pumped Storage, 2 Units ..................... Hydro 1967 210
Various locations, 9 Units .................... Hydro Various 26
Wind:
Ponnequin-Weld County, Colo. ................. Wind 1999-2001 25(d)
D
iesel:
Cherokee-Denver, Colo., 2 Units ................ Diesel 1967 6
Total 5,404
(a) Construction of Comanche Unit 3, a 750 MW coal-fired unit, was completed in 2010. PSCo owns two-thirds of the completed unit.
(b) Based on PSCo’s ownership interest of 10 percent.
(c) Based on PSCo’s ownership interest of 76 percent of Unit 1 and 37 percent of Unit 2.
(d) Amount represents nameplate rating capacity.
(e) PSCo completed its acquisition of Blue Spruce Energy Center and Rocky Mountain Energy Center in December 2010. See Note 19 to the consolidated
financial statements for further discussion.