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44
PSCo
Station, Location and Unit Fuel Installed
Summer 2013
Net Dependable
Capability (MW)
Steam:
Cherokee-Denver, Colo., 2 Units . . . . . . . . . . . . . . . . . . . . . . Coal 1957-1968 504 (a)
Comanche-Pueblo, Colo. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Coal 1973 325
Unit 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Coal 1975 335
Unit 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Coal 2010 500 (b)
Craig-Craig, Colo., 2 Units. . . . . . . . . . . . . . . . . . . . . . . . . . . Coal 1979-1980 83 (c)
Hayden-Hayden, Colo., 2 Units . . . . . . . . . . . . . . . . . . . . . . . Coal 1965-1976 237 (d)
Pawnee-Brush, Colo., 1 Unit . . . . . . . . . . . . . . . . . . . . . . . . . Coal 1981 505
Valmont-Boulder, Colo., 1 Unit . . . . . . . . . . . . . . . . . . . . . . . Coal 1964 184
Zuni-Denver, Colo., 1 Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . Coal 1948-1954 59
Combustion Turbine:
Blue Spruce-Aurora, Colo., 2 Units . . . . . . . . . . . . . . . . . . . . Natural Gas 2003 264
Fort St. Vrain-Platteville, Colo., 6 Units. . . . . . . . . . . . . . . . . Natural Gas 1972-2009 969
Rocky Mountain-Keenesburg, Colo., 3 Units . . . . . . . . . . . . Natural Gas 2004 580
Various locations, 6 Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . Natural Gas Various 172
Hydro:
Cabin Creek-Georgetown, Colo. . . . . . . . . . . . . . . . . . . . . . .
Pumped Storage, 2 Units . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydro 1967 210
Various locations, 9 Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydro Various 26
Wind:
Ponnequin-Weld County, Colo., 37 Units. . . . . . . . . . . . . . . . Wind 1999-2001 25 (e)
Total 4,978
(a) Cherokee Unit 2 was taken out of service in October 2011. Cherokee Unit 1 was taken out of service in May 2012.
(b) Based on PSCo’s ownership interest of 67 percent of Unit 3.
(c) Based on PSCo’s ownership interest of 10 percent.
(d) Based on PSCo’s ownership interest of 76 percent of Unit 1 and 37 percent of Unit 2.
(e) This capacity is only available when wind conditions are sufficiently high enough to support the noted generation values above. Therefore, the on-demand net
dependable capacity is zero.
SPS
Station, Location and Unit Fuel Installed
Summer 2013
Net Dependable
Capability (MW)
Steam:
Harrington-Amarillo, Texas, 3 Units . . . . . . . . . . . . . . . . . . . Coal 1976-1980 1,018
Tolk-Muleshoe, Texas, 2 Units. . . . . . . . . . . . . . . . . . . . . . . . Coal 1982-1985 1,067
Cunningham-Hobbs, N.M., 2 Units . . . . . . . . . . . . . . . . . . . . Natural Gas 1957-1965 254
Jones-Lubbock, Texas, 2 Units. . . . . . . . . . . . . . . . . . . . . . . . Natural Gas 1971-1974 486
Maddox-Hobbs, N.M., 1 Unit. . . . . . . . . . . . . . . . . . . . . . . . . Natural Gas 1967 112
Nichols-Amarillo, Texas, 3 Units. . . . . . . . . . . . . . . . . . . . . . Natural Gas 1960-1968 457
Plant X-Earth, Texas, 4 Units. . . . . . . . . . . . . . . . . . . . . . . . . Natural Gas 1952-1964 411
Combustion Turbine:
Carlsbad-Carlsbad, N.M., 1 Unit . . . . . . . . . . . . . . . . . . . . . . Natural Gas 1968 10
Cunningham-Hobbs, N.M., 2 Units . . . . . . . . . . . . . . . . . . . . Natural Gas 1998 212
Jones-Lubbock, Texas, 2 Units. . . . . . . . . . . . . . . . . . . . . . . . Natural Gas 2011-2013 339 (a)
Maddox-Hobbs, N.M., 1 Unit. . . . . . . . . . . . . . . . . . . . . . . . . Natural Gas 1963-1976 61
Total 4,427
(a) Construction of Jones Unit 3 was completed in 2011 and Jones Unit 4 was completed in May 2013.