List of power stations in Idaho

This is a list of electricity-generating power stations in Idaho, sorted by type and name. In 2024, Idaho had a total summer capacity of 5.5 GW through all of its power plants, and a net generation of 20,035 GWh. The electrical energy generation mix in 2025 was 46.8% hydroelectric, 27.5% natural gas, 14.9% wind, 7.8% solar, 2.5% biomass, 0.4% geothermal, and less than 0.2% other.

During 2021, Idaho was one of the top five U.S. states with its share of renewable electricity generation. It has a rapidly growing population and many undeveloped resources. Idahoans have consumed about 50% more electricity during recent years than is generated within the state.

Fossil-fuel power stations Data from the U.S. Energy Information Administration serves as a general reference.

Coal-fired Name Location Coordinates Capacity(MW) Yearopened Refs Amalgamated Sugar Twin Falls Power Plant Twin Falls County 8.5 1948/1994

Natural gas-fired Idaho has few natural gas reserves, and most of the supply is imported. There were just eight producing wells in the state in 2019.

Name Location Coordinates Capacity(MW) Generationtype Yearopened Refs Amalgamated Sugar Nampa Power Plant Canyon County 8.2 Steam turbine 2015 Bennet Mountain Gas Turbine Elmore County 164 Simple cycle 2005 Evander Andrews Power Complex(or Danskin Power Plant) Elmore County 260 Simple cycle (x3) 2002/2008 Langley Gulch Power Plant Payette County 300 1x1 combined cycle 2012 Rathdrum Gas Turbine Kootenai County 132 Simple cycle (x2) 1994 Rathdrum Power Plant(or Lancaster Plant) Kootenai County 270 1x1 combined cycle 2001

The Nampa plant was opened 1948 and originally coal-fired before it was converted to gas in 2015.

Petroleum-fired Name Location Coordinates Capacity(MW) Generationtype Yearopened Refs Salmon Diesel Lemhi County 5.4 Reciprocating engine (x2) 1967

Renewable power stations Data from the U.S. Energy Information Administration serves as a general reference.

Biomass and industrial waste

Name Location Coordinates Capacity(MW) Primaryfuel Generationtype Yearopened Refs Bannock County Landfill Gas Bannock County 3.2 Landfill gas Reciprocating engine (x2) 2014/2019 Cargill Dry Creek Biofactory Twin Falls County 2.4 Biogas Reciprocating engine (x3) 2008 Clearwater Paper Biomass Nez Perce County 54.5 Wood/wood waste Steam turbine (x4) 1950/1977/1981/1991 Fighting Creek Landfill Gas Kootenai County 3.2 Landfill gas Reciprocating engine (x2) 2012 Hidden Hollow Energy Ada County 3.2 Landfill gas Reciprocating engine (x2) 2007 Milner Butte LFGE Cassia County 2.6 Landfill gas Reciprocating engine (x2) 2018 Plummer Cogen Benewah County 5.8 Wood/wood waste Steam turbine 1982 Rock Creek Dairy Twin Falls County 3.2 Biogas Reciprocating engine (x2) 2012 Simplot Don Plant Bannock County 15.0 Industrial waste heat Steam turbine 1986 Tamarack Energy Adams County 5.8 Wood/wood waste Steam turbine 1983

Waste heat from phosphate fertilizer manufacturing

Geothermal

Name Location Coordinates Capacity(MW) Generationtype Yearopened Refs Raft River Plant Casia County 10.0 Binary cycle 2008

Hydroelectric

Name Location Coordinates Capacity(MW) Number ofturbines Yearopened Refs Albeni Falls Powerplant Bonner County 42.0 3 1955 American Falls Hydro Power County 110.4 3 1978 Anderson RanchPowerplant Elmore County 40.0 2 1951/2010 Arrowrock DamPowerplant Boise CountyElmore County 15.0 2 2010 Ashton Hydro Fremont County 7.1 3 1917/1925 Barber Dam Powerplant Ada County 4.0 1 1990 Black Canyon Diversion Powerplant Gem County 10.2 2 1925 Bliss Hydro Elmore CountyGooding County 75.0 3 1949/1950 Boise River DiversionPowerplant Ada County 3.3 3 2004 Brownlee Hydro Washington County 675.0 5 1958/1980 Bulb Turbine Project Bonneville County 27.0 4 1940/1982 C. J. Strike Hydro Owyhee County 82.8 3 1952 Cabinet Gorge Hydro Bonner County 265.2 4 1952/1953 Cascade Hydro Valley County 14.4 2 1983/1984 Chester Diversion Hydro Fremont County 3.6 3 2014 Clear Lake Hydro Gooding CountyTwin Falls County 2.5 1 1937 Dietrich Drop Lincoln County 4.8 1 1990 Dworshak HydropowerPlant Clearwater County 465.0 3 1975 Falls River Hydro Fremont County 9.0 2 1993 Felt Hydro Teton County 5.9 4 1946/1947/1986 Gem State Hydro Bonneville County 23.4 1 1988 Grace Hydro Caribou County 33.0 3 1923 Hells Canyon Hydro Adams County 391.5 3 1967 Horseshoe Bend Hydro Boise County 9.4 2 1955 Island Park Hydro Fremont County 4.8 2 1994 Lower Salmon Falls Hydro Gooding County 60.0 4 1949 Lucky Peak Hydro Ada County 101.2 3 1988 Magic Dam Hydro Blaine County 9.0 3 1989 Malad Hydro(Upper & Lower) Gooding County 22.0 2 1948 Milner Hydro Cassia County 60.0 3 1992 Minidoka Powerplant Minidoka County 27.7 4 1927/1942/1997 Moyie Springs Hydro Boundary County 4.0 4 1921/1941/1950/1982 Oneida Hydro Caribou County 30.0 3 1915/1916/1920 Oxbow Hydro Adams County 190.0 4 1961 Palisades Powerplant Bonneville County 176.4 4 1957/1958 Post Falls Hydro Kootenai County 15.0 6 1906/1980 Shoshone Falls Hydro Jerome County 13.0 1 1921 Smith Creek Hydro Boundary County 38.1 3 1989/1990 Soda Hydro Caribou County 15.0 2 1924 Swan Falls Hydro Ada County 25.0 2 1994 Thousand Springs Hydro Gooding County 6.8 1 1920 Twin Falls Hydro Twin Falls County 53.0 2 1935/1995 Upper Salmon Falls Hydro Gooding County 35.0 4 1937/1947 Electricity is generated in Oregon.

Wind

Name Location Coordinates Capacity(MW) Number ofturbines Yearopened Turbinemfg spec Refs Burley Butte Wind Park Cassia County 19.5 13 2011 GE 1.5MW Camp Reed Wind Farm Elmore County 22.5 15 2010 GE 1.5MW Goshen Wind Farm Bonneville County 125 83 2010 GE 1.5MW High Mesa Wind Farm Elmore CountyTwin Falls County 39.9 19 2012 Suzlon 2.1MW Horse Butte Wind Farm Bonneville County 57.6 32 2012 Vestas 1.8MW Meadow Creek Wind Farm Bonneville County 120 57 2012 Suzlon 2.1MW Milner Dam Wind Farm Cassia County 19.5 13 2011 GE 1.5MW Payne's Ferry Wind Farm Twin Falls County 21.0 14 2010 GE 1.5MW Power County Wind Park Power County 45.0 18 2011 Nordex 2.5MW Rockland Wind Farm Power County 79.2 44 2011 Vestas 1.8MW Wolverine Creek Wind Bonneville County 64.5 43 2009 GE 1.5MW Yahoo Creek Wind Farm Twin Falls County 21.0 14 2010 GE 1.5MW

Solar

Name Location Coordinates Capacity(MWAC) Yearopened Refs American Falls Solar Farm Power County 20 2017 Grandview Solar Farm Elmore County 80 2016 ID Solar Farm Ada County 40 2016 Mountain Home Solar Farm Elmore County 20 2017 Murphy Flat Solar Farm Ada County 20 2017 Orchard Ranch Solar Farm Ada County 20 2017 Simcoe Solar Farm Elmore County 20 2017

Storage power stations Idaho had no utility-scale storage facilities in 2019.

Nuclear (R&D only) Since 1951, 52 reactors have been built on the grounds of the Atomic Energy Commission's National Reactor Testing Station, currently the location of the U.S. Department of Energy's Idaho National Laboratory (INL). BORAX-III was the first nuclear reactor to supply electrical power to the U.S. grid, in 1955. Four reactors which do not generate electricity were in operation at the site as of 2020.

Name Location Coordinates Capacity(MW) Refs Yearopened Yearclosed Note Advanced Test Reactor (ATR) Butte County N/A 1967 Advanced Test Reactor Critical Facility (ATRC) Butte County N/A 1964 Argonne Low Power Reactor (ALPR/SL-1) Butte County 0.3 Design of the Argonne Low Power Reactor (ALPR), ANL-6076 Reactor Technology, Grant, Hamer, Hooker, Jorgensen, Kann, Lipinski, Milak, Rossin, Shaftman, Smaardyk, Treshow, May 1961, University of Chicago, Argonne National Laboratory. 1958 1961 meltdown Experimental Breeder Reactor I (EBR-I) Butte County 0.2 1951 1964 Experimental Breeder Reactor II (EBR-II) Butte County 20 1964 1994 Neutron Radiography Reactor (NRAD) Butte County N/A 1977 Transient Reactor Test Facility (TREAT) Butte County N/A 1959 1994 restarted 2017 Versatile Test Reactor (VTR) Butte County TBD proposed

See also

List of power stations in the United States

References