Power Plants in Wyoming

Wyoming holds 12.7 GW of nameplate generating capacity as of August 2026, ranking 36th of the 50 states and DC. This figure represents what the fleet could produce running flat out, not what it actually generated. The state's 71 plants, 70 of them in service, span every major generation technology.

Coal and wind dominate the fleet at nearly equal shares. Coal plants, 11 in number, account for 37.2% of capacity at 4,735 MW; wind installations number 28 and hold 37% at 4,707 MW. Natural gas contributes 21.4% through 11 plants totaling 2,731 MW. Hydro, solar, and other fuels make up the remainder: hydro adds 303 MW across 16 plants (2.4%), solar provides 242 MW from 2 plants (1.9%), and other sources account for 16 MW in 3 plants (0.1%).

The largest plants are Jim Bridger, a 2,326 MW natural gas station that came online in 1974, and Laramie River Station, a 1,863 MW coal plant from 1981. Coal plants Dave Johnston (817 MW, first online in 1959) and Naughton (707 MW, first online in 1963) rank third and fourth. Wind's largest contributor is Rock Creek Wind, which came online in September 2025 with 590 MW of capacity. The fleet ranges from Shoshone, which first went online in April 1922, to Rock Creek Wind in September 2025.