List of power stations in Idaho

This is a list of electricity-generating power stations in Idaho, sorted by type and name. In 2019, Idaho had a total summer capacity of 5,212 MW through all of its power plants, and a net generation of 18,408 GWh.[2] The corresponding electrical energy generation mix was 56.1% hydroelectric, 23.2% natural gas, 13.9% wind, 3.2% biomass, 3.0% solar, and 0.5% geothermal. Small-scale solar, including customer-owned photovoltaic panels, generated an additional net 58 GWh to the state's electrical grid. This was nine times smaller than the generation from Idaho's utility-scale solar PV plants.[1]

Sources of Idaho electricity generation: full year 2019 [1]

  Coal (0.1%)
  Natural Gas (23.2%)
  Hydroelectric (56.1%)
  Wind (13.9%)
  Biomass&Waste Heat (3.2%)
  Solar (3.0%)
  Geothermal (0.5%)

During 2019, Idaho was one of the top-five U.S. states in 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.[3]

Fossil-fuel power stations

Data from the U.S. Energy Information Administration serves as a general reference.[4]

Coal-fired

NameLocationCoordinatesCapacity
(MW)
RefsYear
Opened
Note
Amalgamated Sugar Twin Falls Power PlantTwin Falls County42.5328°N 114.4328°W / 42.5328; -114.4328 (Amalgamated Sugar Twin Falls)8.5[5]19486MW added 1994

Natural gas-fired

Idaho has few natural gas reserves, and most of the supply is imported.[3] There were just eight producing wells in the state in 2019.[6]

NameLocationCoordinatesCapacity
(MW)
Generation
Type
RefsYear
Opened
Note
Amalgamated Sugar Nampa Power PlantCanyon County43.6058°N 116.5753°W / 43.6058; -116.5753 (Amalgamated Sugar Nampa)8.2Steam Turbine[7]1948originally 2.2MW coal.
6MW coal added 1960.
converted to gas 2015.[8]
Bennet Mountain Gas TurbineElmore County43.1471°N 115.6666°W / 43.1471; -115.6666 (Bennet Mountain GT Plant)165Simple Cycle[9][10]2007
Evander Andrews Power Complex
(or Danskin Power Plant)
Elmore County43.1791°N 115.7343°W / 43.1791; -115.7343 (Evander Andrews Power Complex)260Simple Cycle (x3)[9][10]2002170MW expansion in 2008
Langley Gulch Power PlantPayette County43.9044°N 116.8197°W / 43.9044; -116.8197 (Langley Gulch Power Plant)3001x1 Combined Cycle[9]2012
Rathdrum Gas TurbineKootenai County47.8043°N 116.8673°W / 47.8043; -116.8673 (Rathdrum GT Plant)130Simple Cycle (x2)[11][12]1995
Rathdrum Power Plant
(or Lancaster Plant)
Kootenai County47.7858°N 116.9203°W / 47.7858; -116.9203 (Rathdrum Power Plant)2701x1 Combined Cycle[13]2001

Renewable power stations

Data from the U.S. Energy Information Administration serves as a general reference.[4]

Biomass

NameLocationCoordinatesCapacity
(MW)
RefsFuelYear
Opened
Note
Clearwater Paper BiomassNez Perce County46.4231°N 116.9764°W / 46.4231; -116.9764 (Clearwater Paper Biomass)55[14][15][16]wood/wood waste1950latest capacity increase in 1991.
includes 5MW natural gas.
Fighting Creek Landfill GasKootenai County47.5317°N 116.9300°W / 47.5317; -116.9300 (Fighting Creek Landfill)3.2[17][18]landfill gas2012
Plummer CogenBenewah County47.3310°N 116.8904°W / 47.3310; -116.8904 (Plummer Cogen)5.8[19][20]wood/wood waste1982
Rock Creek DairyTwin Falls County42.50027°N 114.6150°W / 42.50027; -114.6150 (Rock Creek Dairy)3.2[21][22]biogas2012
Simplot Don PlantBannock County42.9084°N 112.52944°W / 42.9084; -112.52944 (Simplot Don Plant)15[23][24]industrial waste heat1986from chemical fertilizer manufacturing
Tamarack EnergyAdams County44.9548°N 116.3871°W / 44.9548; -116.3871 (Plummer Cogen)5.8[25][26]wood/wood waste1983

Geothermal

NameLocationCoordinatesCapacity
(MW)
RefsYear
Opened
Note
Raft River PlantCasia County42.0994°N 113.3824°W / 42.0994; -113.3824 (Raft River)10[27][28]2008

Hydroelectric

NameLocationCoordinatesCapacity
(MW)
RefsYear
Opened
Note
Albeni Falls PowerplantBonner County48.1802°N 116.9985°W / 48.1802; -116.9985 (Albeni Falls Hydro Plant)42[29]1955
American Falls HydroPower County42.7778°N 112.8764°W / 42.7778; -112.8764 (American Falls Hydro)110[30]1978
Anderson Ranch
Powerplant
Elmore County43.3571°N 115.4515°W / 43.3571; -115.4515 (Anderson Ranch Hydro)40[31]1950
Arrowrock Dam
Powerplant
Boise County
Elmore County
43.5950°N 115.9233°W / 43.5950; -115.9233 (Arrowrock Powerplant)15[32]2010
Ashton HydroFremont County44.0786°N 111.4973°W / 44.0786; -111.4973 (Ashton Hydro)8[33]19174.0MW added 1925
Barber Dam PowerplantAda County43.5610°N 116.1212°W / 43.5610; -116.1212 (Barber Hydro)4[34]1990
Black Canyon Diversion PowerplantGem County43.9305°N 116.4372°W / 43.9305; -116.4372 (Black Canyon Powerplant)10[35]1925
Bliss HydroElmore County
Gooding County
42.9138°N 115.0710°W / 42.9138; -115.0710 (Bliss Hydro)75[30]1950
Boise River Diversion
Powerplant
Ada County43.5377°N 116.0938°W / 43.5377; -116.0938 (Boise River Powerplant)3[36]2004
Brownlee HydroWashington County44.8367°N 116.8975°W / 44.8367; -116.8975 (Brownlee Hydro)675[30]1958225MW added 1980
Bulb Turbine ProjectBonneville County43.4913°N 112.0454°W / 43.4913; -112.0454 (Bulb Turbine Project)24[37]1982includes three 8.0MW plants
C. J. Strike HydroOwyhee County42.9449°N 115.9778°W / 42.9449; -115.9778 (C. J. Strike Hydro)83[30]1952
Cabinet Gorge HydroBonner County48.0844°N 116.0530°W / 48.0844; -116.0530 (Cabinet Gorge Hydro)265[38]1953
Cascade HydroValley County44.5256°N 116.0483°W / 44.5256; -116.0483 (Cascade Hydro)14[30][39]1983
Clear Lake HydroGooding County
Twin Falls County
42.6670°N 114.7801°W / 42.6670; -114.7801 (Clear Lake Hydro)2.5[30]1937
Dworshak Hydropower
Plant
Clearwater County46.5143°N 116.2977°W / 46.5143; -116.2977 (Dowrshak Hydro Plant)465[40]1975
Gem State HydroBonneville County43.4202°N 112.1019°W / 43.4202; -112.1019 (Gem State Hydro)23[37]1988
Grace HydroCaribou County42.5368°N 111.7940°W / 42.5368; -111.7940 (Grace Hydro)33[41]1923
Hells Canyon HydroAdams County45.2439°N 116.7008°W / 45.2439; -116.7008 (Hells Canyon Hydro)392[30]1967all electricity is generated in Oregon
Horseshoe Bend HydroBoise County43.9041°N 116.2442°W / 43.9041; -116.2442 (Horseshoe Bend Hydro)9.5[42]1955
Island Park HydroFremont County44.4183°N 111.3960°W / 44.4183; -111.3960 (Island Park Hydro)5[43]1994
Lower Salmon Falls HydroGooding County42.8416°N 114.9036°W / 42.8416; -114.9036 (Lower Salmon Falls Hydro)60[30]1949
Lucky Peak HydroAda County43.5280°N 116.0583°W / 43.5280; -116.0583 (Lucky Peak Hydro)101[44]1988
Malad Hydro
(Upper & Lower)
Gooding County42.8643°N 114.8855°W / 42.8643; -114.8855 (Malad Hydro)22[30]1948
Milner HydroCassia County42.5267°N 114.0369°W / 42.5267; -114.0369 (Milner Hydro)60[30]1992
Minidoka PowerplantMinidoka County42.6699°N 113.4832°W / 42.6699; -113.4832 (Minidoka Powerplant)28[45][46]19275.0MW add 1942
20MW added 1997
Moyie Springs HydroBoundary County48.7339°N 116.1752°W / 48.7339; -116.1752 (Moyie Hydro)4[47][48]19211 MW added 1941
1 MW added1950
1.5MW added 1982
Oneida HydroCaribou County42.2678°N 111.7485°W / 42.2678; -111.7485 (Oneida Hydro)30[41]191510MW added 1920
Oxbow HydroAdams County44.9716°N 116.8350°W / 44.9716; -116.8350 (Oxbow Hydro)190[30]1961all electricity is generated in Oregon
Palisades PowerplantBonneville County43.3348°N 111.2058°W / 43.3348; -111.2058 (Palisades Powerplant)176[49]1957
Post Falls HydroKootenai County47.7033°N 116.9538°W / 47.7033; -116.9538 (Post Falls Hydro)15[50]19063.5MW added 1980
Shoshone Falls HydroJerome County42.5975°N 114.4033°W / 42.5975; -114.4033 (Shoshone Falls Hydro)13[30]1921
Smith Creek HydroBoundary County48.9595°N 116.5574°W / 48.9595; -116.5574 (Smith Creek Hydro)38[51]1990
Soda HydroCaribou County42.6445°N 111.6967°W / 42.6445; -111.6967 (Soda Hydro)15[41]1924
Swan Falls HydroAda County43.2435°N 116.3791°W / 43.2435; -116.3791 (Swan Falls Hydro)25[30]1994
Thousand Springs HydroGooding County42.7405°N 114.8367°W / 42.7405; -114.8367 (Thousand Springs Hydro)7[30]1920
Twin Falls HydroTwin Falls County42.5892°N 114.3553°W / 42.5892; -114.3553 (Twin Falls Hydro)53[30]193544MW added 1995
Upper Salmon Falls HydroGooding County42.7664°N 114.9082°W / 42.7664; -114.9082 (Upper Salmon Falls Hydro)35[30]193716.5MW add 1947

Wind

NameLocationCoordinatesCapacity
(MW)
RefsYear
Opened
Turbine
Mfg Spec
Goshen Wind FarmBonneville County43.4670°N 111.8363°W / 43.4670; -111.8363 (Goshen Wind Farm)125[52][53]2010GE 1.5MW
Meadow Creek Wind FarmBonneville County43.5244°N 111.8039°W / 43.5244; -111.8039 (Meadow Creek Wind)120[54]2012Suzlon 2.1MW
Wolverine Creek WindBonneville County43.4195°N 111.8294°W / 43.4195; -111.8294 (Wolverine Creek Wind)64.5[55]2009GE 1.5MW
Horse Butte Wind FarmBonneville County43.3864°N 111.7264°W / 43.3864; -111.7264 (Horse Butte Wind)57.6[56]2012Vestas 1.8MW
Rockland Wind FarmPower County42.6747°N 112.90194°W / 42.6747; -112.90194 (Rockland Wind)79.2[57]2011Vestas 1.8MW
Power County Wind ParkPower County42.7389°N 112.7486°W / 42.7389; -112.7486 (Greenfield Wind)45.0[58]2011Nordex 2.5MW
High Mesa Wind FarmElmore County
Twin Falls County
42.8800°N 115.0366°W / 42.8800; -115.0366 (High Mesa Wind)39.9[59]2012Suzlon 2.1MW
Camp Reed Wind FarmElmore County42.8119°N 115.0488°W / 42.8119; -115.0488 (Camp Reed Wind)22.5[60]2010GE 1.5MW
Payne's Ferry Wind FarmTwin Falls County42.8253°N 115.0108°W / 42.8253; -115.0108 (Payne's Ferry Wind)21.0[61]2010GE 1.5MW
Yahoo Creek Wind FarmTwin Falls County42.7708°N 114.9886°W / 42.7708; -114.9886 (Yahoo Creek Wind)21.0[62]2010GE 1.5MW
Burley Butte Wind ParkCassia County42.4903°N 113.9266°W / 42.4903; -113.9266 (Burley Butte Wind)19.5[63]2011GE 1.5MW
Milner Dam Wind FarmCassia County42.4606°N 114.0172°W / 42.4606; -114.0172 (Milner Dam Wind)19.5[64]2011GE 1.5MW

Solar

NameLocationCoordinatesCapacity
(MWAC)
RefsYear
Opened
Note
American Falls Solar FarmPower County42.8240°N 112.7520°W / 42.8240; -112.7520 (American Falls Solar)20[65]2017
Grandview Solar FarmElmore County42.9896°N 116.0934°W / 42.9896; -116.0934 (Grandview Solar)80[66][67]2016
ID Solar FarmAda County43.4440°N 116.3330°W / 43.4440; -116.3330 (ID Solar)40[68]2016
Mountain Home Solar FarmElmore County43.1290°N 115.7520°W / 43.1290; -115.7520 (Mountain Home Solar)20[69]2017
Murphy Flat Solar FarmAda County43.2130°N 116.4390°W / 43.2130; -116.4390 (Murphy Flat Solar)20[70]2017
Orchard Ranch Solar FarmAda County43.4670°N 116.2850°W / 43.4670; -116.2850 (Orchard Ranch Solar)20[71]2017
Simcoe Solar FarmElmore County43.2884°N 115.9554°W / 43.2884; -115.9554 (Simcoe Solar)20[72][73]2017

Nuclear (R&D Only)

Since 1951, fifty-two 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 are in operation at the site as of year 2020.[74]

NameLocationCoordinatesCapacity
(MW)
RefsYear
Opened
Year
Closed
Note
Experimental Breeder Reactor I (EBR-I)Butte County43.5113°N 113.0064°W / 43.5113; -113.0064 (EBR-I)0.2[75]19511964
Experimental Breeder Reactor II (EBR-II)Butte County20[76]19641994
Argonne Low Power Reactor (ALPR/SL-1)Butte County43.5180°N 112.8234°W / 43.5180; -112.8234 (SL-1)0.3[77]19581961meltdown
Advanced Test Reactor (ATR)Butte County43.5858°N 112.9653°W / 43.5858; -112.9653 (ATR)N/A[78][79]1967
Advanced Test Reactor Critical Facility (ATRC)Butte CountyN/A[80]1964
Neutron Radiography Reactor (NRAD)Butte CountyN/A[81]1977
Transient Reactor Test Facility (TREAT)Butte CountyN/A[82][83]19591994restarted 2017
Versatile Test Reactor (VTR)Butte CountyTBD[84]proposed

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