Directory of Power Plants in Wyoming
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Alcova | U S Bureau of Reclamation | Alcova, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 107.2 GWh | Jun 1955 | Dec 2025 | Water |
| Anticline Wind | Anticline Wind, LLC | Casper, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 411.3 GWh | Nov 2024 | May 2026 | Wind |
| Arvada | Basin Electric Power Coop | Arvada, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 171.0 MWh | Aug 2002 | Dec 2025 | Natural Gas |
| Barber Creek | Basin Electric Power Coop | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 294.0 MWh | Aug 2002 | Dec 2025 | Natural Gas |
| Beaver Creek Gas Plant | Denbury Inc | Riverton, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 5.1 GWh | Nov 1983 | Dec 2025 | Natural Gas |
| Big Sand Draw Plant | Denbury Inc | Riverton, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 39.0 GWh | Feb 2015 | May 2026 | Natural Gas |
| Boswell Wind | Boswell Wind, LLC | Rock River, WY | PacifiCorp East (PACE) | 1.2 TWh | Nov 2024 | May 2026 | Wind |
| Boysen | U S Bureau of Reclamation | Thermopolis, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 42.5 GWh | Jul 1952 | Dec 2025 | Water |
| Buffalo Bill | U S Bureau of Reclamation | Cody, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 57.5 GWh | Aug 1992 | Dec 2025 | Water |
| Campbell Hill Windpower | Duke Energy Renewables Services | Glenrock, WY | PacifiCorp East (PACE) | 261.4 GWh | Nov 2009 | May 2026 | Wind |
| Cedar Springs I | Cedar Springs Wind, LLC | Douglas, WY | PacifiCorp East (PACE) | 733.0 GWh | Nov 2020 | May 2026 | Wind |
| Cedar Springs II | PacifiCorp | Douglas, WY | PacifiCorp East (PACE) | 736.0 GWh | Nov 2020 | May 2026 | Wind |
| Cedar Springs III | Cedar Springs Wind III, LLC | Douglas, WY | PacifiCorp East (PACE) | 484.7 GWh | Nov 2020 | May 2026 | Wind |
| Cedar Springs Wind IV | Cedar Springs Wind IV, LLC | Douglas, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 1.3 TWh | Dec 2024 | May 2026 | Wind |
| Cheyenne Prairie Generating Station | Black Hills Service Company LLC | Cheyenne, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 475.3 GWh | Sep 2014 | May 2026 | Natural Gas |
| Corriedale Wind Energy | Black Hills Service Company LLC | Cheyenne, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 218.0 GWh | Oct 2020 | May 2026 | Wind |
| Dave Johnston | PacifiCorp | Glen Rock, WY | PacifiCorp East (PACE) | 3.2 TWh | Jan 1959 | May 2026 | Subbituminous Coal : 99.8% |
| Dry Fork Station | Basin Electric Power Coop | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 2.6 TWh | Oct 2011 | May 2026 | Subbituminous Coal : 99.8% |
| Dunlap | PacifiCorp | Medicine Bow, WY | PacifiCorp East (PACE) | 416.7 GWh | Sep 2010 | Dec 2025 | Wind |
| Ekola Flats | PacifiCorp | Medicine Bow, WY | PacifiCorp East (PACE) | 770.4 GWh | Nov 2020 | May 2026 | Wind |
| Elk Basin Gasoline Plant | Contango Oil and Gas | Powell, WY | PacifiCorp East (PACE) | 6.3 GWh | Dec 1947 | Dec 2025 | Other Gas |
| Fontenelle | U S Bureau of Reclamation | Le Barge, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 43.8 GWh | Apr 1968 | Dec 2025 | Water |
| Foote Creek Rim | PacifiCorp | McFadden, WY | PacifiCorp East (PACE) | 643.8 GWh | Nov 2024 | May 2026 | Wind |
| Fremont Canyon | U S Bureau of Reclamation | Alcova, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 233.5 GWh | Nov 1960 | Dec 2025 | Water |
| Garland Canal Power Plant | Shoshone Irrigation District | Powell, WY | PacifiCorp East (PACE) | 10.0 GWh | Aug 1983 | May 2026 | Water |
| General Chemical | Tata Chemicals Partners | Green River, WY | PacifiCorp East (PACE) | 215.9 GWh | Apr 1968 | May 2026 | Bituminous Coal : 74.9% Natural Gas : 25.1% |
| Glendo | U S Bureau of Reclamation | Glendo, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 67.3 GWh | Nov 1958 | Dec 2025 | Water |
| Glenrock | PacifiCorp | Glenrock, WY | PacifiCorp East (PACE) | 469.2 GWh | Nov 2008 | Dec 2025 | Wind |
| Guernsey | U S Bureau of Reclamation | Guernsey, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 14.6 GWh | Jun 1927 | Dec 2025 | Water |
| Happy Jack Windpower Project | Duke Energy Renewables Services | Cheyenne, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 64.1 GWh | Jul 2008 | May 2026 | Wind |
| Hartzog | Basin Electric Power Coop | Wright, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 148.0 MWh | Jul 2002 | Dec 2025 | Natural Gas |
| Heart Mountain | U S Bureau of Reclamation | Cody, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 16.1 GWh | Nov 1948 | Oct 2025 | Water |
| High Plains | PacifiCorp | Rock River, WY | PacifiCorp East (PACE) | 341.2 GWh | Aug 2009 | Dec 2025 | Wind |
| Jim Bridger | PacifiCorp | Point of Rocks, WY | PacifiCorp East (PACE) | 7.1 TWh | Oct 1974 | May 2026 | Subbituminous Coal : 60.3% Natural Gas : 39.5% |
| Kortes | U S Bureau of Reclamation | Sinclair, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 105.7 GWh | May 1950 | Dec 2025 | Water |
| Lake (WY) | NorthWestern Energy (MT wind/thermal) | Yellowstone, WY | NorthWestern Corporation (NWMT) | 96.0 MWh | Aug 1967 | Dec 2025 | Distillate Fuel Oil |
| Laramie River Station | Basin Electric Power Coop | Wheatland, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 8.0 TWh | Jun 1981 | May 2026 | Subbituminous Coal : 99.7% |
| McFadden Ridge | PacifiCorp | Rock River, WY | PacifiCorp East (PACE) | 104.8 GWh | Sep 2009 | Dec 2025 | Wind |
| Mountain Wind Power II LLC | Mountain Wind Power II LLC | Fort Bridger, WY | PacifiCorp East (PACE) | 190.6 GWh | Aug 2008 | May 2026 | Wind |
| Mountain Wind Power LLC | Mountain Wind Power LLC | Fort Bridger, WY | PacifiCorp East (PACE) | 158.8 GWh | Jun 2008 | May 2026 | Wind |
| Naughton | PacifiCorp | Kemmerer, WY | PacifiCorp East (PACE) | 1.7 TWh | Apr 1963 | May 2026 | Subbituminous Coal : 65.9% Natural Gas : 34.1% |
| Neil Simpson Gas Turbine #2 | Black Hills Power, Inc. | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 36.5 GWh | Mar 2001 | Dec 2025 | Natural Gas |
| Neil Simpson II | Black Hills Power, Inc. | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 641.8 GWh | Aug 1995 | Dec 2025 | Subbituminous Coal : 81.9% Natural Gas : 18.1% |
| Old Faithful | NorthWestern Energy (MT wind/thermal) | Yellowstone, WY | NorthWestern Corporation (NWMT) | 203.0 MWh | Nov 1979 | Dec 2025 | Distillate Fuel Oil |
| Pioneer Wind Park, LLC | AES Distributed Energy | Glenrock, WY | PacifiCorp East (PACE) | 252.6 GWh | Sep 2016 | Dec 2025 | Wind |
| Rock Creek Wind | PacifiCorp | McFadden, WY | PacifiCorp East (PACE) | 519.5 GWh | Aug 2025 | May 2026 | Wind |
| Rolling Hills | PacifiCorp | Glenrock, WY | PacifiCorp East (PACE) | 295.1 GWh | Dec 2008 | Dec 2025 | Wind |
| Roundhouse Renewable Energy II | Roundhouse Renewable Energy II, LLC | Granite, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 391.8 GWh | Nov 2023 | May 2026 | Wind |
| Roundhouse Wind Energy Project | Roundhouse Renewable Energy, LLC | Cheyenne, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 894.0 GWh | May 2020 | May 2026 | Wind |
| Seminoe | U S Bureau of Reclamation | Sinclair, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 84.5 GWh | Jul 1939 | Dec 2025 | Water |
| Seven Mile Hill | PacifiCorp | Hanna, WY | PacifiCorp East (PACE) | 458.3 GWh | Nov 2008 | Dec 2025 | Wind |
| Shoshone (WY) | U S Bureau of Reclamation | Cody, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 17.1 GWh | Mar 1922 | Dec 2025 | Water |
| Shute Creek Facility | Exxon Mobil Production Co | Kemmerer, WY | PacifiCorp East (PACE) | 837.9 GWh | Apr 2005 | May 2026 | Natural Gas : 61.1% Other Gas : 38.9% |
| Silver Sage Windpower | Duke Energy Renewables Services | Cheyenne, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 101.0 GWh | Sep 2009 | May 2026 | Wind |
| Simplot Phosphates | Simplot Phosphates LLC | Rock Springs, WY | PacifiCorp East (PACE) | 100.1 GWh | Jul 1986 | May 2026 | Other Fuel : 89.4% Natural Gas : 10.6% |
| Sinclair Oil Refinery | HF Sinclair Parco Refining LLC | Sinclair, WY | PacifiCorp East (PACE) | 5.9 GWh | Dec 1924 | May 2026 | Natural Gas |
| South Cheyenne Solar | Southern Power Co | South Greeley, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 312.4 GWh | Mar 2024 | May 2026 | Solar |
| Spirit Mountain | U S Bureau of Reclamation | Cody, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 16.1 GWh | Sep 1994 | Oct 2025 | Water |
| Strawberry Creek | Lower Valley Energy Inc | Bedford, WY | Bonneville Power Administration (BPAT) | 8.8 GWh | Jul 1940 | Dec 2025 | Water |
| Sweetwater Solar | Onward Energy | Green River, WY | PacifiCorp East (PACE) | 174.3 GWh | Nov 2018 | May 2026 | Solar |
| Swift Creek | Lower Valley Energy Inc | Afton, WY | Bonneville Power Administration (BPAT) | 6.1 GWh | Mar 2009 | Dec 2025 | Water |
| TB Flats | PacifiCorp | Medicine Bow, WY | PacifiCorp East (PACE) | 1.4 TWh | Sep 2021 | May 2026 | Wind |
| Top of the World Windpower Project | Duke Energy Renewables Services | Glenrock, WY | PacifiCorp East (PACE) | 517.3 GWh | Sep 2010 | May 2026 | Wind |
| TransAlta Wyoming Wind | TransAlta Wyoming Wind LLC | Evanston, WY | PacifiCorp East (PACE) | 321.4 GWh | Nov 2003 | Dec 2025 | Wind |
| WE Soda Alkalai LLC | WE Soda Alkali | Green River, WY | PacifiCorp East (PACE) | 259.5 GWh | May 1953 | Dec 2024 | Subbituminous Coal : 68.7% Natural Gas : 31.3% |
| Wygen 1 | Black Hills Power, Inc. | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 578.0 GWh | Dec 2002 | May 2026 | Subbituminous Coal : 99.7% |
| Wygen 2 | Black Hills Power, Inc. | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 595.6 GWh | Dec 2007 | Dec 2025 | Subbituminous Coal : 99.5% |
| Wygen III | Black Hills Power, Inc. | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 95.0 GWh | Mar 2010 | Dec 2025 | Subbituminous Coal : 99.8% |
| Wyodak | PacifiCorp | Gillette, WY | PacifiCorp East (PACE) | 2.0 TWh | Aug 1978 | May 2026 | Subbituminous Coal : 99.9% |
Browse Power Plants By Wyoming Counties
Figures are based on May 2026 generation numbers.| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Albany County, WY | # 8 | 8 | 1.7 TWh |
| Campbell County, WY | # 4 | 11 | 6.6 TWh |
| Carbon County, WY | # 5 | 21 | 4.4 TWh |
| Converse County, WY | # 1 | 11 | 8.3 TWh |
| Fremont County, WY | # 12 | 4 | 86.6 GWh |
| Laramie County, WY | # 7 | 9 | 2.5 TWh |
| Lincoln County, WY | # 6 | 6 | 2.6 TWh |
| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Natrona County, WY | # 9 | 4 | 751.9 GWh |
| Park County, WY | # 11 | 6 | 123.0 GWh |
| Platte County, WY | # 2 | 3 | 8.1 TWh |
| Sheridan County, WY | # 14 | 1 | 171.0 MWh |
| Sweetwater County, WY | # 3 | 6 | 7.9 TWh |
| Teton County, WY | # 13 | 2 | 299.0 MWh |
| Uinta County, WY | # 10 | 5 | 670.9 GWh |