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List of power stations in Wyoming

From Wikipedia, the free encyclopedia

Sources of Wyoming electricity generation in gigawatt-hours, full-year 2025:[1]
  1. Coal: 27,024 (58.5%)
  2. Wind: 12,526 (27.1%)
  3. Natural gas: 4,595 (9.94%)
  4. Hydroelectric: 1,082 (2.34%)
  5. Solar: 496 (1.07%)
  6. Other gases: 365 (0.79%)
  7. Petroleum: 53 (0.11%)
  8. Other: 85 (0.18%)

This is a list of electricity-generating power stations in the U.S. state of Wyoming, sorted by type and name. In 2024, Wyoming had a total summer capacity of 10.8 GW through all of its power plants, and a net generation of 40,709 GWh.[2] The electrical energy generation mix in 2025 was 58.5% coal, 27.1% wind, 9.9% natural gas, 2.3% hydroelectric, 1.1% solar, 0.8% other gases, 0.1% petroleum, and 0.2% other. Small-scale solar, which includes customer-owned photovoltaic panels, delivered 41 GWh to Wyoming's electrical grid in 2025.[1]

Wyoming has the smallest population in the U.S., and in 2019 three-fifths of its electricity generation was sent to nearby western states. It contains more than one-third of the nation's recoverable coal reserves, accounted for two-fifths of all related U.S. mining activity, and exported much of its low-sulfur coal to power plants in 29 other states. Wyoming also mined and exported nearly all the uranium used to fuel the nation's fleet of nuclear power stations. These activities have declined somewhat in recent years, while extraction of Wyoming's oil and gas reserves continued to expand.[3]

Wyoming power grid
Wyoming electricity generation by type

Nuclear power stations

[edit]

Wyoming has no utility-scale nuclear facilities. In June 2021, Terrapower and Pacificorp announced their intention to advance a novel reactor demonstration project at the site of a retiring coal plant in Wyoming.[4] On 16 November 2021, Pacificorp announced the selection of the Naughton Power Plant in Kemmerer, Wyoming, for the Natrium Demonstration Project.[5]

Fossil-fuel power stations

[edit]

Data from the U.S. Energy Information Administration serves as a general reference.[6]

Coal

[edit]
NameLocationCoordinatesCapacity (MW)Number of
steam turbine
units
Year
completed
Retirement scheduleRefs
Dave JohnstonConverse County42°50′16″N 105°46′37″W / 42.8378°N 105.7769°W / 42.8378; -105.7769 (Dave Johnston)922.241957 (Unit 1)
1961 (Unit 2)
1964 (Unit 3)
1972 (Unit 4)
2027[7]
General ChemicalSweetwater County41°35′36″N 109°45′15″W / 41.5933°N 109.7542°W / 41.5933; -109.7542 (General Chemical)3021968 (Unit 1)
1977 (Unit 2)
[8]
Genesis AlkaliSweetwater County41°37′18″N 109°48′43″W / 41.6217°N 109.8119°W / 41.6217; -109.8119 (Genesis Alkali)4161953-1975[9]
Jim Bridger Power StationSweetwater County41°44′16″N 108°47′09″W / 41.7378°N 108.7857°W / 41.7378; -108.7857 (Jim Bridger)2,441.941974 (Unit 1)
1975 (Unit 2)
1976 (Unit 3)
1979 (Unit 4)
2038 (Unit 1)
2038 (Unit 2)
2023 (Unit 3)
2028 (Unit 4)
[7]
Laramie River StationPlatte County42°06′32″N 104°52′57″W / 42.1089°N 104.8825°W / 42.1089; -104.8825 (Laramie River)1,71031981 (Unit 1)
1981 (Unit 2)
1982 (Unit 3)
[10]
Naughton Power PlantLincoln County41°45′29″N 110°35′54″W / 41.7581°N 110.5983°W / 41.7581; -110.5983 (Naughton)83231963 (Unit 1)
1968 (Unit 2)
1971 (Unit 3)
2025 (Unit 1)
2025 (Unit 2)
2019 (unit 3)
[7]
Neil Simpson ICampbell County44°17′14″N 105°23′16″W / 44.2872°N 105.3878°W / 44.2872; -105.3878 (Neil Simpson I)22119592014 (closed)[11][12]
Neil Simpson IICampbell County44°17′09″N 105°23′00″W / 44.2857°N 105.3833°W / 44.2857; -105.3833 (Neil Simpson II)8011995[12]
Wygen ICampbell County44°17′09″N 105°23′00″W / 44.2858°N 105.3833°W / 44.2858; -105.3833 (Wygen 1)9012003[13]
Wygen IICampbell County44°17′31″N 105°22′52″W / 44.2919°N 105.3811°W / 44.2919; -105.3811 (Wygen 2)9512008[14]
Wygen IIICampbell County44°17′31″N 105°22′50″W / 44.2919°N 105.3806°W / 44.2919; -105.3806 (Wygen 3)11612010[15]
WyodakCampbell County44°17′24″N 105°22′53″W / 44.2901°N 105.3815°W / 44.2901; -105.3815 (Wyodak)402.3119782038[16][17][18]

Natural gas

[edit]
NameLocationCoordinatesCapacity
(MW)
Generation
type
Year
completed
Refs
ArvadaSheridan County44°41′24″N 106°06′33″W / 44.6900°N 106.1092°W / 44.6900; -106.1092 (Arvada)22.5Simple cycle (x3)2002[19]
Barber CreekCampbell County43°43′19″N 105°46′08″W / 43.7219°N 105.7689°W / 43.7219; -105.7689 (Barber Creek)22.5Simple cycle (x3)2002[20][19]
Beaver Creek Gas PlantFremont County42°50′51″N 108°18′49″W / 42.8475°N 108.3136°W / 42.8475; -108.3136 (Beaver Creel)3.6Simple cycle (x2)1983[21]
Big Sand Draw PlantFremont County42°45′10″N 108°10′11″W / 42.7527°N 108.1697°W / 42.7527; -108.1697 (Big Sand Draw)8.0Reciprocating engine (x5)2015[22]
Cheyenne Prairie Generating StationLaramie County41°07′25″N 107°43′12″W / 41.1236°N 107.7200°W / 41.1236; -107.7200 (Cheyenne Prairie)1402x1 combined cycle,
simple cycle
2014[23]
HartzogCampbell County43°49′46″N 105°31′56″W / 43.8294°N 105.5322°W / 43.8294; -105.5322 (Hartzog)22.5Simple cycle (x3)2002[19]
Neil SimpsonCampbell County44°17′06″N 105°22′43″W / 44.2850°N 105.3786°W / 44.2850; -105.3786 (Neil Simpson)68Simple cycle (x2)2000/2001[11]
Sinclair Oil RefineryCarbon County41°46′46″N 107°06′35″W / 41.7795°N 107.1097°W / 41.7795; -107.1097 (Sinclair Refinery)3.9Reciprocating engine (x3)2012[24]
Western Sugar Cooperative - TorringtonGoshen County42°02′49″N 104°11′11″W / 42.0469°N 104.1863°W / 42.0469; -104.1863 (Western Sugar - Torrington)2.0Steam turbine1923
2018 (closed)
[25][26]

Other petroleum gases

[edit]
NameLocationCoordinatesCapacity
(MW)
Fuel typeGeneration
type
Year
completed
Refs
Beaver Creek Gas PlantFremont County42°50′51″N 108°18′49″W / 42.8475°N 108.3136°W / 42.8475; -108.3136 (Beaver Creek)0.9All otherSteam turbine2018[21]
Elk Basin Gasoline PlantPark County44°58′50″N 108°50′34″W / 44.9806°N 108.8428°W / 44.9806; -108.8428 (Elk Basin Gasoline)2.0Other gasesSteam turbine (x2)1948[27]
Shute Creek FacilityLincoln County41°52′50″N 110°05′25″W / 41.8805°N 110.0904°W / 41.8805; -110.0904 (Shute Creek)144Other gasesSimple cycle (x3)2005[28]
Sinclair Oil RefineryCarbon County41°46′46″N 107°06′35″W / 41.7795°N 107.1097°W / 41.7795; -107.1097 (Sinclair Refinery)1.7Other gasesSteam turbine (x2)1926/1954[24]

Petroleum liquids

[edit]
NameLocationCoordinatesCapacity
(MW)
Generation
type
Year
completed
Refs
LakeTeton County44°24′54″N 110°34′26″W / 44.4150°N 110.5739°W / 44.4150; -110.5739 (Lake)2.7Reciprocating engine1967
Old FaithfulTeton County44°27′12″N 110°50′05″W / 44.4533°N 110.8347°W / 44.4533; -110.8347 (Old Faithful)2.0Reciprocating engine (x2)1979
Sinclair Oil RefineryCarbon County41°46′46″N 107°06′35″W / 41.7795°N 107.1097°W / 41.7795; -107.1097 (Sinclair Refinery)1.1Reciprocating engine1955[24]

Renewable power stations

[edit]

Data from the U.S. Energy Information Administration serves as a general reference.[6]

Biomass and industrial waste

[edit]
NameLocationCoordinatesCapacity
(MW)
Fuel typeGeneration
type
Year
completed
Refs
Simplot PhosphatesSweetwater County41°32′30″N 109°07′58″W / 41.5417°N 109.1328°W / 41.5417; -109.1328 (Simplot Phosphates)11.5Industrial waste heat[A]Steam turbine1986[29][30]

A Waste heat from phosphate fertilizer manufacturing

Geothermal

[edit]

Wyoming has no utility-scale geothermal facilities. It has a number of small-scale geothermal installations used mostly to heat buildings.[3]

Hydroelectric

[edit]
NameLocationCoordinatesCapacity
(MW)
Number of
turbines
Year
completed
Refs
AlcovaNatrona County42°32′54″N 106°42′27″W / 42.5484°N 106.7075°W / 42.5484; -106.7075 (Alcova)41.421955[31]
BoysenFremont County43°25′04″N 108°10′39″W / 43.4179°N 108.1775°W / 43.4179; -108.1775 (Boysen)1521952[32]
Buffalo BillPark County44°30′30″N 109°10′15″W / 44.5082°N 109.1707°W / 44.5082; -109.1707 (Buffalo Bill)1831992[33]
FontenelleLincoln County42°01′37″N 110°03′50″W / 42.0270°N 110.0640°W / 42.0270; -110.0640 (Fontenelle)1011968[34]
Fremont CanyonNatrona County42°28′36″N 106°47′45″W / 42.4766°N 106.7959°W / 42.4766; -106.7959 (Fremont Canyon)66.821960/1961[35]
Garland CanalPark County44°43′35″N 108°51′52″W / 44.7264°N 108.8644°W / 44.7264; -108.8644 (Garland Canal)2.911983
GlendoPlatte County42°28′02″N 104°57′20″W / 42.4673°N 104.9555°W / 42.4673; -104.9555 (Glendo)3821958/1959[36]
GuernseyPlatte County42°17′24″N 104°45′38″W / 42.2899°N 104.7606°W / 42.2899; -104.7606 (Guernsey)6.421927/1928[37]
Heart MountainPark County44°30′50″N 109°07′47″W / 44.5138°N 109.1296°W / 44.5138; -109.1296 (Heart Mountain)5.011948[38]
KortesCarbon County42°10′27″N 106°52′50″W / 42.1743°N 106.8805°W / 42.1743; -106.8805 (Kortes)3631950/1951[39]
Pilot ButteFremont County43°13′08″N 108°47′16″W / 43.2190°N 108.7877°W / 43.2190; -108.7877 (Pilot Butte)1.621925/1929[40]
Salt RiverCarbon County43°07′10″N 111°02′07″W / 43.1195°N 111.0352°W / 43.1195; -111.0352 (Salt River)0.621936
1967 (closed)
[41]
SeminoeCarbon County42°09′22″N 106°54′31″W / 42.1561°N 106.9085°W / 42.1561; -106.9085 (Seminoe)51.631939[42]
Shoshone (WY)Park County44°30′10″N 109°10′52″W / 44.5029°N 109.1812°W / 44.5029; -109.1812 (Shoshone)3.011922[43]
Spirit MountainPark County44°30′46″N 109°07′48″W / 44.5127°N 109.1299°W / 44.5127; -109.1299 (Spirit Mountain)4.511994[44]
Strawberry CreekLincoln County42°54′18″N 110°53′36″W / 42.9051°N 110.8934°W / 42.9051; -110.8934 (Strawberry Creek)1.531940/1951[45]
Swift CreekLincoln County42°43′42″N 110°55′00″W / 42.7284°N 110.9166°W / 42.7284; -110.9166 (Swift Creek)1.732009/2010[46][47]

Solar

[edit]
PlantLocationCoordinatesCapacity
(MWAC)
Year
completed
Refs
South Cheyenne Solar Laramie County 150 2024 [48]
Sweetwater SolarSweetwater County41°37′45″N 109°41′01″W / 41.6291°N 109.6835°W / 41.6291; -109.6835 (Sweetwater)922018[49]

Wind

[edit]
Additional data reported by the United States Wind Turbine Database[50]
PlantLocationCoordinatesCapacity
(MW)
Number of
turbines
Year
completed
Refs
Campbell Hill WindpowerConverse County43°00′53″N 105°59′56″W / 43.0146°N 105.9990°W / 43.0146; -105.9990 (Cambell Hill)99662009[50]
Casper Wind FarmNatrona County42°53′05″N 106°13′17″W / 42.8847°N 106.2214°W / 42.8847; -106.2214 (Casper)16.5112009[50]
Cedar Springs Wind Farm (I-III)Converse County42°59′06″N 105°25′57″W / 42.9850°N 105.4325°W / 42.9850; -105.4325 (Cedar Springs)531.561922020[50]
Corriedale Wind Energy ProjectLaramie County41°05′57″N 104°58′33″W / 41.0992°N 104.9757°W / 41.0992; -104.9757 (Corriedale)59.22212020[50]
DunlapCarbon County42°02′37″N 106°09′37″W / 42.0436°N 106.1603°W / 42.0436; -106.1603 (Dunlap)136.9742010[50]
Ekola FlatsCarbon County41°56′10″N 106°18′44″W / 41.9360°N 106.3122°W / 41.9360; -106.3122 (Ekola Flats)250.9632020[50]
Foote Creek ICarbon County41°37′42″N 106°12′05″W / 41.6283°N 106.2013°W / 41.6283; -106.2013 (Foot Creek I)41.4691999[50]
Foote Creek II, III, IV RepoweringCarbon County41°40′12″N 106°11′02″W / 41.6699°N 106.1839°W / 41.6699; -106.1839 (Foote Creek II, III, IV)46.2112023[50]
GlenrockConverse County43°01′05″N 105°50′07″W / 43.0181°N 105.8353°W / 43.0181; -105.8353 (Glenrock)119.3662008[50]
Happy Jack Windpower ProjectLaramie County41°08′23″N 104°59′52″W / 41.1397°N 104.9978°W / 41.1397; -104.9978 (Happy Jack)29.4142008[50]
High PlainsAlbany County41°40′30″N 106°00′40″W / 41.6751°N 106.0111°W / 41.6751; -106.0111 (High Plains)122.1662009[50]
McFadden RidgeAlbany County41°39′21″N 106°02′15″W / 41.6559°N 106.0375°W / 41.6559; -106.0375 (McFadden Ridge)35.15192009[50]
Medicine BowCarbon County41°50′07″N 106°14′35″W / 41.8353°N 106.2431°W / 41.8353; -106.2431 (Medicine Bow)3.5552015[50]
Mountain Wind Power IIUinta County41°15′50″N 110°32′40″W / 41.2639°N 110.5444°W / 41.2639; -110.5444 (Mountain Wind II)79.8382008[50]
Mountain Wind Power LLCUinta County41°17′17″N 110°30′11″W / 41.2881°N 110.5030°W / 41.2881; -110.5030 (Mountain Wind I)60.9292008[50]
Pioneer Wind Park, LLCConverse County42°43′42″N 105°52′00″W / 42.7282°N 105.8668°W / 42.7282; -105.8668 (Pioneer)80.0462016[50]
Rolling Hills Wind FarmConverse County43°03′26″N 105°51′15″W / 43.0572°N 105.8543°W / 43.0572; -105.8543 (Rolling Hills)115.8662009[50]
Roundhouse Wind Energy CenterLaramie County41°03′58″N 105°07′23″W / 41.0660°N 105.1230°W / 41.0660; -105.1230 (Roundhouse)226.56822020[50]
Seven Mile HillCarbon County41°56′49″N 106°23′37″W / 41.9469°N 106.3936°W / 41.9469; -106.3936 (Seven Mile Hill)122.1662008[50]
Silver Sage WindpowerLaramie County41°07′47″N 105°01′26″W / 41.1297°N 105.0240°W / 41.1297; -105.0240 (Silver Sage)42.0202009[50]
TB Flats I and IICarbon County42°07′47″N 106°07′30″W / 42.1296°N 106.1251°W / 42.1296; -106.1251 (TB Flats)301.1852021[50]
Top of the World Windpower ProjectConverse County42°57′06″N 105°46′22″W / 42.9517°N 105.7727°W / 42.9517; -105.7727 (Top of the World)200.21102010[50]
TransAlta Wyoming WindUinta County41°17′15″N 110°33′20″W / 41.2874°N 110.5556°W / 41.2874; -110.5556 (Transalta Wyoming)144.0802003[50]

The Chokecherry and Sierra Madre Wind Energy Project, with a planned capacity of up to 3,000 MW generated by about 1,000 turbines, is under construction in Carbon County and scheduled for completion in 2026.[51] It would be the largest wind farm in the U.S. upon completion, and would serve the western U.S. market through planned new HVDC transmission capacity.[52]

Battery storage facilities

[edit]

Wyoming had no utility-scale battery storage facilities in 2019.

See also

[edit]

References

[edit]
  1. 1 2 "Electricity Data Browser, Net generation for all sectors, Wyoming, Fuel Type-Check all, Annual, 2001–25". www.eia.gov. Retrieved February 28, 2026.
  2. ↑ "Wyoming Electricity Profile". U.S. Energy Information Administration. Retrieved March 8, 2026.
  3. 1 2 "Wyoming Electricity Profile Analysis". U.S. EIA. Retrieved January 21, 2021.
  4. ↑ "Natrium™ Reactor Demonstration Project will bring clean energy and jobs to the state". Terrapower. June 2, 2021.
  5. ↑ "Coal Plant Site Unveiled for 500-MW Natrium Advanced Nuclear Pilot". Powermag. November 17, 2021.
  6. 1 2 Energy Information Administration (September 15, 2020). "Form EIA-860 detailed data with previous form data (EIA-860A/860B)". eia.gov. Archived from the original on September 18, 2020.
  7. 1 2 3 "PacifiCorp details early Bridger, Naughton coal closures". WyoFile. October 3, 2019. Retrieved June 7, 2020.
  8. ↑ "General Chemical Green River Power Plant". Global Energy Monitor. Retrieved May 8, 2021.
  9. ↑ "Genesis Alkali". Genesis Energy LLC. Retrieved May 8, 2021.
  10. ↑ "Laramie River Station". Global Energy Monitor. Retrieved May 8, 2021.
  11. 1 2 "Black Hills Corp. closes coal unit at Wyodak Neil Simpson complex in Gillette". Casper Star Tribune. Retrieved February 28, 2020.
  12. 1 2 "Neil Simpson Power Plants". Global Energy Monitor. Retrieved May 8, 2021.
  13. ↑ "Wygen Station". Global Energy Monitor. Retrieved May 8, 2021.
  14. ↑ "Wygen II". Global Energy Monitor. Retrieved May 8, 2021.
  15. ↑ "Wygen III". Global Energy Monitor. Retrieved May 8, 2021.
  16. ↑ "PacifiCorp: early closure of Wyo coal plants saves $599 million". WyoFile. September 10, 2019. Retrieved June 7, 2020.
  17. ↑ "Wyodak Power Plant". Global Energy Monitor. Retrieved May 8, 2021.
  18. ↑ "Wyodak Mine". Global Energy Monitor. Retrieved May 8, 2021.
  19. 1 2 3 "Wyoming Distributed Generation". Basin Electric Power Cooperative. Retrieved March 3, 2020.
  20. ↑ "Barber Creek". Energy Justice Network. Retrieved March 3, 2020.
  21. 1 2 "Beaver Creek Gas Plant". Energy Justice Network. Retrieved March 3, 2020.
  22. ↑ Laura Hancock (September 23, 2015). "Oil recovery plant breaks ground in Riverton Wyoming". Billings Gazette.
  23. ↑ "Cheyenne Prairie Generating Station". Black Hills Corporation. Retrieved March 3, 2020.
  24. 1 2 3 "Sinclair Wyoming Refining Company". Sinclair. Retrieved May 4, 2021.
  25. ↑ "Our Facilities". Great Western Sugar Coop. Retrieved January 21, 2021.
  26. ↑ Joshua Wolfson (November 28, 2018). "After 95 years, Torrington sugar beet plant to stop production". Casper Star Tribune.
  27. ↑ "Elk Basine Gasoline Waste Plant WY". Global Energy Observatory. Retrieved May 4, 2021.
  28. ↑ Dan Kubek (March 30, 2009). "Large CO2 sources and capture systems: ExxonMobil LaBarge-Shute Creek, WY Natural Gas Plant" (PDF). Gas Processing Solutions LLC.
  29. ↑ "Simplot Phosphates" (PDF). www.simplot.com. Retrieved January 21, 2021.
  30. ↑ "Project Profile - Waste Heat to Electricity In Fertilizer Manufacturing" (PDF). Simplot Leasing Corp. Retrieved January 7, 2021.
  31. ↑ "Alcova Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  32. ↑ "Boysen Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  33. ↑ "Buffalo Bill Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  34. ↑ "Fontenelle Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  35. ↑ "Freemont Canyon Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  36. ↑ "Glendo Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  37. ↑ "Guernsey Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  38. ↑ "Heart Mountain Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  39. ↑ "Kortes Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  40. ↑ "Pilot Butte Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  41. ↑ Scott D. Heiner and Rheba Massey (August 30, 1991). "National Register of Historic Places Registration: Salt River Hydroelectric Plant Historic District". National Park Service. and accompanying nine photos from 1992-93
  42. ↑ "Seminoe Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  43. ↑ "Shoshone Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  44. ↑ "Spirit Mountain Powerplant". U.S. Bureau of Reclamation. Retrieved January 22, 2021.
  45. ↑ "Strawberry Creek Hydro Plant". Global Energy Observatory. Retrieved January 22, 2021.
  46. ↑ "Clean Renewable Energy Bonds fund rehab of 1.55-MW Wyoming hydro". Hydro Review. June 12, 2008.
  47. ↑ "Upper Swift Creek". Canyon Hydro. Retrieved January 22, 2021.
  48. ↑ Power, Southern. "Southern Power's South Cheyenne Solar Facility in Wyoming is now operational". www.prnewswire.com. Retrieved May 18, 2024.
  49. ↑ "Sweetwater". Swinerton Renewable Energy. Retrieved January 21, 2021.
  50. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 "United States Wind Turbine Database Viewer". United States Geological Survey. Retrieved January 14, 2025.
  51. ↑ Erickson, Camille (October 21, 2019). "Work on Wyoming's largest wind farm project continues even as schedule changes". Casper Star-Tribune Online. Retrieved January 30, 2020.
  52. ↑ Matthew Bandyk (October 25, 2019). "Largest planned wind farm in US gets key federal approval". Utility Dive.