Directory of Power Plants in Wyoming
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Laramie River Station | Basin Electric Power Coop | Wheatland, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 8.5 TWh | Jun 1981 | Sep 2025 | Subbituminous Coal : 99.7% |
| Jim Bridger | PacifiCorp | Point of Rocks, WY | PacifiCorp East (PACE) | 8.0 TWh | Oct 1974 | Sep 2025 | Subbituminous Coal : 60.6% Natural Gas : 39.3% |
| Dave Johnston | PacifiCorp | Glen Rock, WY | PacifiCorp East (PACE) | 4.6 TWh | Jan 1959 | Sep 2025 | Subbituminous Coal : 99.9% |
| Naughton | PacifiCorp | Kemmerer, WY | PacifiCorp East (PACE) | 2.3 TWh | Apr 1963 | Sep 2025 | Subbituminous Coal : 66.9% Natural Gas : 33.1% |
| Dry Fork Station | Basin Electric Power Coop | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 2.2 TWh | Oct 2011 | Sep 2025 | Subbituminous Coal : 99.8% |
| Wyodak | PacifiCorp | Gillette, WY | PacifiCorp East (PACE) | 2.0 TWh | Aug 1978 | Sep 2025 | Subbituminous Coal : 99.9% |
| TB Flats | PacifiCorp | Medicine Bow, WY | PacifiCorp East (PACE) | 1.3 TWh | Sep 2021 | Sep 2025 | Wind |
| Boswell Wind | Boswell Wind, LLC | Rock River, WY | PacifiCorp East (PACE) | 873.9 GWh | Nov 2024 | Sep 2025 | Wind |
| Shute Creek Facility | Exxon Mobil Production Co | Kemmerer, WY | PacifiCorp East (PACE) | 824.1 GWh | Apr 2005 | Sep 2025 | Natural Gas : 58.3% Other Gas : 41.7% |
| Roundhouse Wind Energy Project | Roundhouse Renewable Energy, LLC | Cheyenne, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 820.2 GWh | May 2020 | Sep 2025 | Wind |
| Ekola Flats | PacifiCorp | Hanna, WY | PacifiCorp East (PACE) | 696.9 GWh | Nov 2020 | Sep 2025 | Wind |
| Cedar Springs I | Cedar Springs Wind, LLC | Douglas, WY | PacifiCorp East (PACE) | 692.7 GWh | Nov 2020 | Sep 2025 | Wind |
| Cedar Springs Wind IV | Cedar Springs Wind IV, LLC | Douglas, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 683.4 GWh | - | Sep 2025 | Wind |
| Wygen III | Black Hills Power, Inc. | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 670.7 GWh | Mar 2010 | Dec 2024 | Subbituminous Coal : 99.7% |
| Neil Simpson II | Black Hills Power, Inc. | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 660.9 GWh | Aug 1995 | Dec 2024 | Subbituminous Coal : 91.8% Natural Gas : 8.2% |
| Cedar Springs II | PacifiCorp | Douglas, WY | PacifiCorp East (PACE) | 611.5 GWh | Nov 2020 | Sep 2025 | Wind |
| Wygen 2 | Black Hills Power, Inc. | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 581.5 GWh | Dec 2007 | Dec 2024 | Subbituminous Coal : 99.6% |
| Wygen 1 | Black Hills Power, Inc. | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 578.4 GWh | Dec 2002 | Sep 2025 | Subbituminous Coal : 99.9% |
| Foote Creek Rim | PacifiCorp | McFadden, WY | PacifiCorp East (PACE) | 510.4 GWh | Nov 2024 | Sep 2025 | Wind |
| Cheyenne Prairie Generating Station | Black Hills Service Company LLC | Cheyenne, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 493.0 GWh | Sep 2014 | Sep 2025 | Natural Gas |
| Cedar Springs III | Cedar Springs Wind III, LLC | Douglas, WY | PacifiCorp East (PACE) | 483.8 GWh | Nov 2020 | Sep 2025 | Wind |
| Top of the World Windpower Project | Duke Energy Renewables Services | Glenrock, WY | PacifiCorp East (PACE) | 461.0 GWh | Sep 2010 | Sep 2025 | Wind |
| Glenrock | PacifiCorp | Glenrock, WY | PacifiCorp East (PACE) | 401.0 GWh | Nov 2008 | Dec 2024 | Wind |
| Seven Mile Hill | PacifiCorp | Medicine Bow, WY | PacifiCorp East (PACE) | 399.8 GWh | Nov 2008 | Dec 2024 | Wind |
| Roundhouse Renewable Energy II | Roundhouse Renewable Energy II, LLC | Granite, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 371.6 GWh | Nov 2023 | Sep 2025 | Wind |
| Dunlap | PacifiCorp | Medicine Bow, WY | PacifiCorp East (PACE) | 366.5 GWh | Sep 2010 | Dec 2024 | Wind |
| South Cheyenne Solar | Southern Power Co | South Greeley, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 330.1 GWh | Mar 2024 | Sep 2025 | Solar |
| TransAlta Wyoming Wind | TransAlta Wyoming Wind LLC | Evanston, WY | PacifiCorp East (PACE) | 318.8 GWh | Nov 2003 | Dec 2024 | Wind |
| Anticline Wind | Anticline Wind, LLC | Casper, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 274.8 GWh | Nov 2024 | Sep 2025 | Wind |
| High Plains | PacifiCorp | Rock River, WY | PacifiCorp East (PACE) | 274.1 GWh | Aug 2009 | Dec 2024 | Wind |
| Pioneer Wind Park, LLC | AES Distributed Energy | Glenrock, WY | PacifiCorp East (PACE) | 273.0 GWh | Sep 2016 | Dec 2024 | Wind |
| Campbell Hill Windpower | Duke Energy Renewables Services | Glenrock, WY | PacifiCorp East (PACE) | 263.4 GWh | Nov 2009 | Sep 2025 | Wind |
| Genesis Alkali | Genesis Alkali, LLC | Green River, WY | PacifiCorp East (PACE) | 259.5 GWh | May 1953 | Dec 2024 | Subbituminous Coal : 68.7% Natural Gas : 31.3% |
| Rolling Hills | PacifiCorp | Glenrock, WY | PacifiCorp East (PACE) | 244.8 GWh | Dec 2008 | Dec 2024 | Wind |
| Fremont Canyon | U S Bureau of Reclamation | Alcova, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 227.7 GWh | Nov 1960 | Dec 2024 | Water |
| Foote Creek I | PacifiCorp | McFadden, WY | PacifiCorp East (PACE) | 215.5 GWh | Mar 1999 | Dec 2023 | Wind |
| Corriedale Wind Energy | Black Hills Service Company LLC | Cheyenne, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 209.0 GWh | Oct 2020 | Sep 2025 | Wind |
| General Chemical | Tata Chemicals Partners | Green River, WY | PacifiCorp East (PACE) | 201.1 GWh | Apr 1968 | Sep 2025 | Bituminous Coal : 75.6% Natural Gas : 24.4% |
| Sweetwater Solar | Onward Energy | Green River, WY | PacifiCorp East (PACE) | 173.3 GWh | Nov 2018 | Sep 2025 | Solar |
| Mountain Wind Power II LLC | Mountain Wind Power II LLC | Fort Bridger, WY | PacifiCorp East (PACE) | 159.7 GWh | Aug 2008 | Sep 2025 | Wind |
| Kortes | U S Bureau of Reclamation | Sinclair, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 155.4 GWh | May 1950 | Dec 2024 | Water |
| Seminoe | U S Bureau of Reclamation | Sinclair, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 137.0 GWh | Jul 1939 | Dec 2024 | Water |
| Mountain Wind Power LLC | Mountain Wind Power LLC | Fort Bridger, WY | PacifiCorp East (PACE) | 130.9 GWh | Jun 2008 | Sep 2025 | Wind |
| Alcova | U S Bureau of Reclamation | Alcova, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 119.2 GWh | Jun 1955 | Dec 2024 | Water |
| Silver Sage Windpower | Duke Energy Renewables Services | Cheyenne, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 104.1 GWh | Sep 2009 | Sep 2025 | Wind |
| Simplot Phosphates | Simplot Phosphates LLC | Rock Springs, WY | PacifiCorp East (PACE) | 99.6 GWh | Jul 1986 | Sep 2025 | Other Fuel : 89.6% Natural Gas : 10.4% |
| Glendo | U S Bureau of Reclamation | Glendo, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 87.7 GWh | Nov 1958 | Dec 2024 | Water |
| McFadden Ridge | PacifiCorp | Rock River, WY | PacifiCorp East (PACE) | 84.1 GWh | Sep 2009 | Dec 2024 | Wind |
| Boysen | U S Bureau of Reclamation | Thermopolis, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 70.3 GWh | Jul 1952 | Dec 2024 | Water |
| Buffalo Bill | U S Bureau of Reclamation | Cody, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 66.2 GWh | Aug 1992 | Dec 2024 | Water |
| Happy Jack Windpower Project | Duke Energy Renewables Services | Cheyenne, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 59.3 GWh | Jul 2008 | Sep 2025 | Wind |
| Fontenelle | U S Bureau of Reclamation | Le Barge, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 53.3 GWh | Apr 1968 | Dec 2024 | Water |
| Big Sand Draw Plant | Denbury Inc | Riverton, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 38.2 GWh | Feb 2015 | Sep 2025 | Natural Gas |
| Neil Simpson Gas Turbine #2 | Black Hills Power, Inc. | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 28.5 GWh | Mar 2001 | Dec 2024 | Natural Gas |
| Heart Mountain | U S Bureau of Reclamation | Cody, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 21.0 GWh | Nov 1948 | Dec 2024 | Water |
| Guernsey | U S Bureau of Reclamation | Guernsey, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 18.0 GWh | Jun 1927 | Dec 2024 | Water |
| Shoshone (WY) | U S Bureau of Reclamation | Cody, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 17.6 GWh | Mar 1922 | Dec 2024 | Water |
| Spirit Mountain | U S Bureau of Reclamation | Cody, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 17.3 GWh | Sep 1994 | Oct 2024 | Water |
| Foote Creek III | PacifiCorp | McFadden, WY | PacifiCorp East (PACE) | 14.6 GWh | May 1999 | Dec 2023 | Wind |
| Foote Creek IV | PacifiCorp | Rock River, WY | PacifiCorp East (PACE) | 11.6 GWh | Jul 2000 | Dec 2023 | Wind |
| Medicine Bow | SRIV Partnership LLC | Medicine Bow, WY | Western Area Power Administration - Upper Great Plains West (WAUW) | 11.1 GWh | Mar 1998 | Oct 2024 | Wind |
| Strawberry Creek | Lower Valley Energy Inc | Bedford, WY | Bonneville Power Administration (BPAT) | 9.4 GWh | Jul 1940 | Dec 2024 | Water |
| Garland Canal Power Plant | Shoshone Irrigation District | Powell, WY | PacifiCorp East (PACE) | 9.0 GWh | Aug 1983 | Sep 2025 | Water |
| Sinclair Oil Refinery | HF Sinclair Parco Refining LLC | Sinclair, WY | PacifiCorp East (PACE) | 7.4 GWh | Dec 1924 | Jun 2025 | Natural Gas |
| Elk Basin Gasoline Plant | Contango Oil and Gas | Powell, WY | PacifiCorp East (PACE) | 6.7 GWh | Dec 1947 | Dec 2024 | Other Gas |
| Swift Creek | Lower Valley Energy Inc | Afton, WY | Bonneville Power Administration (BPAT) | 6.5 GWh | Mar 2009 | Dec 2024 | Water |
| Casper Wind Farm | Chevron USA | Evansville, WY | PacifiCorp East (PACE) | 5.7 GWh | Nov 2009 | Dec 2023 | Wind |
| Beaver Creek Gas Plant | Denbury Inc | Riverton, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 4.5 GWh | Nov 1983 | Dec 2024 | Natural Gas |
| Lake (WY) | NorthWestern Energy (MT wind/thermal) | Yellowstone, WY | NorthWestern Corporation (NWMT) | 515.0 MWh | Aug 1967 | Dec 2024 | Distillate Fuel Oil |
| Barber Creek | Basin Electric Power Coop | Gillette, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 273.0 MWh | Aug 2002 | Dec 2024 | Natural Gas |
| Old Faithful | NorthWestern Energy (MT wind/thermal) | Yellowstone, WY | NorthWestern Corporation (NWMT) | 273.0 MWh | Nov 1979 | Dec 2024 | Distillate Fuel Oil |
| Arvada | Basin Electric Power Coop | Arvada, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 199.0 MWh | Aug 2002 | Dec 2024 | Natural Gas |
| Hartzog | Basin Electric Power Coop | Wright, WY | Western Area Power Administration - Rocky Mountain Region (WACM) | 178.0 MWh | Jul 2002 | Dec 2024 | Natural Gas |
Browse Power Plants By Wyoming Counties
Figures are based on September 2025 generation numbers.| County | State Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Sweetwater County, WY | # 1 | 6 | 8.7 TWh |
| Converse County, WY | # 2 | 11 | 8.7 TWh |
| Platte County, WY | # 3 | 3 | 8.6 TWh |
| Campbell County, WY | # 4 | 11 | 6.8 TWh |
| Carbon County, WY | # 5 | 21 | 3.8 TWh |
| Lincoln County, WY | # 6 | 6 | 3.2 TWh |
| Laramie County, WY | # 7 | 8 | 2.4 TWh |
| County | State Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Albany County, WY | # 8 | 8 | 1.2 TWh |
| Natrona County, WY | # 9 | 4 | 627.5 GWh |
| Uinta County, WY | # 10 | 5 | 609.5 GWh |
| Park County, WY | # 11 | 6 | 137.8 GWh |
| Fremont County, WY | # 12 | 4 | 113.0 GWh |
| Teton County, WY | # 13 | 2 | 788.0 MWh |
| Sheridan County, WY | # 14 | 1 | 199.0 MWh |