List of power stations in Idaho


This is a list of electricity-generating power stations in Idaho, sorted by type and name. In 2023, Idaho had a total summer capacity of 5,353 MW through all of its power plants, and a net generation of 17,842 GWh. The electrical energy generation mix in 2024 was 44.7% hydroelectric, 31.5% natural gas, 15.4% wind, 5.5% solar, 2.2% biomass, 0.4% geothermal, and 0.4% 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.

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.
NameLocationCoordinatesCapacity
Generation
type		Year
opened		Refs
Amalgamated Sugar Nampa Power PlantCanyon County8.2Steam turbine2015
Bennet Mountain Gas TurbineElmore County164Simple cycle2005
Evander Andrews Power Complex
Elmore County260Simple cycle 2002/2008
Langley Gulch Power PlantPayette County3001x1 combined cycle2012
Rathdrum Gas TurbineKootenai County132Simple cycle 1994
Rathdrum Power Plant
Kootenai County2701x1 combined cycle2001

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

Renewable power stations

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

Biomass and industrial waste

NameLocationCoordinatesCapacity
Primary
fuel		Generation
type		Year
opened		Refs
Bannock County Landfill GasBannock County3.2Landfill gasReciprocating engine 2014/2019
Cargill Dry Creek BiofactoryTwin Falls County2.4BiogasReciprocating engine 2008
Clearwater Paper BiomassNez Perce County54.5Wood/wood wasteSteam turbine 1950/1977/
1981/1991
Fighting Creek Landfill GasKootenai County3.2Landfill gasReciprocating engine 2012
Hidden Hollow EnergyAda County3.2Landfill gasReciprocating engine 2007
Milner Butte LFGECassia County2.6Landfill gasReciprocating engine 2018
Plummer CogenBenewah County5.8Wood/wood wasteSteam turbine1982
Rock Creek DairyTwin Falls County3.2BiogasReciprocating engine 2012
Simplot Don PlantBannock County15.0Industrial waste heatSteam turbine1986
Tamarack EnergyAdams County5.8Wood/wood wasteSteam turbine1983

Waste heat from phosphate fertilizer manufacturing

Geothermal

NameLocationCoordinatesCapacity
Generation
type		Year
opened		Refs
Raft River PlantCasia County10.0Binary cycle2008

Hydroelectric

NameLocationCoordinatesCapacity
Number of
turbines		Year
opened		Refs
Albeni Falls PowerplantBonner County42.031955
American Falls HydroPower County110.431978
Anderson Ranch
Powerplant		Elmore County40.021951/2010
Arrowrock Dam
Powerplant		Boise County
Elmore County		15.022010
Ashton HydroFremont County7.131917/1925
Barber Dam PowerplantAda County4.011990
Black Canyon Diversion PowerplantGem County10.221925
Bliss HydroElmore County
Gooding County		75.031949/1950
Boise River Diversion
Powerplant		Ada County3.332004
Brownlee HydroWashington County675.051958/1980
Bulb Turbine ProjectBonneville County27.041940/1982
C. J. Strike HydroOwyhee County82.831952
Cabinet Gorge HydroBonner County265.241952/1953
Cascade HydroValley County14.421983/1984
Chester Diversion HydroFremont County3.632014
Clear Lake HydroGooding County
Twin Falls County		2.511937
Dietrich DropLincoln County4.811990
Dworshak Hydropower
Plant		Clearwater County465.031975
Falls River HydroFremont County9.021993
Felt HydroTeton County5.941946/1947/
1986
Gem State HydroBonneville County23.411988
Grace HydroCaribou County33.031923
Hells Canyon HydroAdams County391.531967
Horseshoe Bend HydroBoise County9.421955
Island Park HydroFremont County4.821994
Lower Salmon Falls HydroGooding County60.041949
Lucky Peak HydroAda County101.231988
Magic Dam HydroBlaine County9.031989
Malad Hydro
Gooding County22.021948
Milner HydroCassia County60.031992
Minidoka PowerplantMinidoka County27.741927/1942/
1997
Moyie Springs HydroBoundary County4.041921/1941/
1950/1982
Oneida HydroCaribou County30.031915/1916/
1920
Oxbow HydroAdams County190.041961
Palisades PowerplantBonneville County176.441957/1958
Post Falls HydroKootenai County15.061906/1980
Shoshone Falls HydroJerome County13.011921
Smith Creek HydroBoundary County38.131989/1990
Soda HydroCaribou County15.021924
Swan Falls HydroAda County25.021994
Thousand Springs HydroGooding County6.811920
Twin Falls HydroTwin Falls County53.021935/1995
Upper Salmon Falls HydroGooding County35.041937/1947

Electricity is generated in Oregon.

Wind

NameLocationCoordinatesCapacity
Number of
turbines		Year
opened		Turbine
mfg spec		Refs
Burley Butte Wind ParkCassia County19.5132011GE 1.5MW
Camp Reed Wind FarmElmore County22.5152010GE 1.5MW
Goshen Wind FarmBonneville County125832010GE 1.5MW
High Mesa Wind FarmElmore County
Twin Falls County		39.9192012Suzlon 2.1MW
Horse Butte Wind FarmBonneville County57.6322012Vestas 1.8MW
Meadow Creek Wind FarmBonneville County120572012Suzlon 2.1MW
Milner Dam Wind FarmCassia County19.5132011GE 1.5MW
Payne's Ferry Wind FarmTwin Falls County21.0142010GE 1.5MW
Power County Wind ParkPower County45.0182011Nordex 2.5MW
Rockland Wind FarmPower County79.2442011Vestas 1.8MW
Wolverine Creek WindBonneville County64.5432009GE 1.5MW
Yahoo Creek Wind FarmTwin Falls County21.0142010GE 1.5MW

Solar

NameLocationCoordinatesCapacity
Year
opened		Refs
American Falls Solar FarmPower County202017
Grandview Solar FarmElmore County802016
ID Solar FarmAda County402016
Mountain Home Solar FarmElmore County202017
Murphy Flat Solar FarmAda County202017
Orchard Ranch Solar FarmAda County202017
Simcoe Solar FarmElmore County202017

Storage power stations

Idaho had no utility-scale storage facilities in 2019.

Nuclear (R&D">Research and Development">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. 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.
NameLocationCoordinatesCapacity
RefsYear
opened		Year
closed		Note
Advanced Test Reactor Butte CountyN/A1967
Advanced Test Reactor Critical Facility Butte CountyN/A1964
Argonne Low Power Reactor Butte County0.319581961meltdown
Experimental Breeder Reactor I Butte County0.219511964
Experimental Breeder Reactor II Butte County2019641994
Neutron Radiography Reactor Butte CountyN/A1977
Transient Reactor Test Facility Butte CountyN/A19591994restarted 2017
Versatile Test Reactor Butte CountyTBDproposed