Directory of Power Plants in Idaho
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Brownlee | Idaho Power Co | Cambridge, ID | Idaho Power Company (IPCO) | 2.2 TWh | Jul 1958 | Dec 2024 | Water |
| Langley Gulch Power Plant | Idaho Power Co | New Plymouth, ID | Idaho Power Company (IPCO) | 1.8 TWh | May 2012 | Sep 2025 | Natural Gas |
| Rathdrum Power LLC | Rathdrum Power LLC | Rathdrum, ID | Avista Corporation (AVA) | 1.4 TWh | Aug 2001 | Dec 2024 | Natural Gas |
| Dworshak | USACE Northwestern Division | Ahsahka, ID | Bonneville Power Administration (BPAT) | 1.4 TWh | Aug 1974 | Dec 2024 | Water |
| Evander Andrews Power Complex | Idaho Power Co | Mountain Home, ID | Idaho Power Company (IPCO) | 1.1 TWh | Aug 2001 | Dec 2024 | Natural Gas |
| Bennett Mountain | Idaho Power Co | Mountain Home, ID | Idaho Power Company (IPCO) | 919.1 GWh | Mar 2005 | Dec 2024 | Natural Gas |
| Rathdrum | Avista Corp | Rathdrum, ID | Avista Corporation (AVA) | 866.3 GWh | Oct 1994 | Dec 2024 | Natural Gas |
| Cabinet Gorge | Avista Corp | Clark Fork, ID | Avista Corporation (AVA) | 857.6 GWh | Aug 1952 | Dec 2024 | Water |
| Palisades Dam | U S Bureau of Reclamation | Palisades, ID | Bonneville Power Administration (BPAT) | 744.4 GWh | Jan 1957 | Dec 2024 | Water |
| Clearwater Paper IPP Lewiston | Clearwater Paper Corporation | Lewiston, ID | Avista Corporation (AVA) | 451.0 GWh | Dec 1949 | Sep 2025 | Black Liquor : 60.1% Wood/Wood Waste Solids : 24.0% Natural Gas : 15.9% |
| Cedar Creek Wind, LLC | Cedar Creek Wind, LLC | Shelley, ID | PacifiCorp East (PACE) | 431.1 GWh | Feb 2024 | Sep 2025 | Wind |
| C J Strike | Idaho Power Co | Bruneau, ID | Idaho Power Company (IPCO) | 422.3 GWh | Feb 1952 | Dec 2024 | Water |
| Matrix Pleasant Valley | Pleasant Valley Solar, LLC | Boise, ID | Idaho Power Company (IPCO) | 389.6 GWh | - | Sep 2025 | Solar |
| Goshen Phase II | AE Power Services LLC | Idaho Falls, ID | PacifiCorp East (PACE) | 369.2 GWh | Aug 2010 | Dec 2024 | Wind |
| Bliss (ID) | Idaho Power Co | Bliss, ID | Idaho Power Company (IPCO) | 332.6 GWh | Oct 1949 | Dec 2024 | Water |
| Meadow Creek Project Company | Ridgeline Energy LLC | Idaho Falls, ID | PacifiCorp East (PACE) | 325.0 GWh | Nov 2012 | Dec 2024 | Wind |
| Lucky Peak Power Plant Project | Boise-Kuna Irrigation District | Boise, ID | Idaho Power Company (IPCO) | 290.6 GWh | Sep 1988 | Dec 2024 | Water |
| Jackpot Solar, LLC | Duke Energy Renewables Services | Twin Falls, ID | Idaho Power Company (IPCO) | 275.5 GWh | Nov 2022 | Sep 2025 | Solar |
| Rockland Wind Farm | Ridgeline Energy LLC | American Falls, ID | Idaho Power Company (IPCO) | 250.6 GWh | Nov 2011 | Dec 2024 | Wind |
| American Falls | Idaho Power Co | American Falls, ID | Idaho Power Company (IPCO) | 242.4 GWh | Feb 1978 | Oct 2024 | Water |
| Franklin Solar Hybrid | Franklin Solar Idaho | Twin Falls, ID | Idaho Power Company (IPCO) | 236.7 GWh | Apr 2024 | Sep 2025 | Solar |
| Lower Salmon | Idaho Power Co | Hagerman, ID | Idaho Power Company (IPCO) | 232.0 GWh | Jan 1949 | Dec 2024 | Water |
| Grand View Solar Two | Grand View PV Solar Two, LLC | Grand View, ID | Idaho Power Company (IPCO) | 183.5 GWh | Nov 2016 | Sep 2025 | Solar |
| Albeni Falls | USACE Northwestern Division | Oldtown, ID | Bonneville Power Administration (BPAT) | 179.3 GWh | Apr 1955 | Dec 2024 | Water |
| Horse Butte Wind I, LLC | Utah Associated Mun Power Sys | Iona, ID | Bonneville Power Administration (BPAT) | 167.4 GWh | Jul 2012 | Dec 2024 | Wind |
| Wolverine Creek | Invenergy Services LLC | Idaho Falls, ID | PacifiCorp East (PACE) | 163.5 GWh | Jan 2006 | Dec 2024 | Wind |
| Anderson Ranch | U S Bureau of Reclamation | Mountain Home, ID | Bonneville Power Administration (BPAT) | 130.0 GWh | Nov 1950 | Dec 2024 | Water |
| Swan Falls | Idaho Power Co | Kuna, ID | Idaho Power Company (IPCO) | 121.9 GWh | Feb 1994 | Dec 2024 | Water |
| Minidoka | U S Bureau of Reclamation | Rupert, ID | Bonneville Power Administration (BPAT) | 111.7 GWh | May 1927 | Dec 2024 | Water |
| Gem State | City of Idaho Falls - (ID) | Idaho Falls, ID | PacifiCorp East (PACE) | 108.5 GWh | Oct 1988 | Dec 2024 | Water |
| Upper Salmon A | Idaho Power Co | Hagerman, ID | Idaho Power Company (IPCO) | 108.0 GWh | Aug 1937 | Dec 2024 | Water |
| Upper Salmon B | Idaho Power Co | Hagerman, ID | Idaho Power Company (IPCO) | 102.3 GWh | Aug 1947 | Dec 2024 | Water |
| Lower Malad | Idaho Power Co | Hagerman, ID | Idaho Power Company (IPCO) | 102.0 GWh | Sep 1948 | Dec 2024 | Water |
| Twin Falls (ID) | Idaho Power Co | Kimberly, ID | Idaho Power Company (IPCO) | 101.0 GWh | Feb 1935 | Dec 2024 | Water |
| Milner Hydro | Idaho Power Co | Murtaugh, ID | Idaho Power Company (IPCO) | 98.7 GWh | Aug 1992 | Dec 2024 | Water |
| Black Mesa Solar, LLC | Black Mesa Solar, LLC | King Hill, ID | Idaho Power Company (IPCO) | 92.9 GWh | May 2023 | Sep 2025 | Solar |
| Raft River Geothermal Power Plant | US Geothermal Inc. | Malta, ID | Bonneville Power Administration (BPAT) | 92.0 GWh | Dec 2007 | Dec 2024 | Geothermal |
| Grace | PacifiCorp | Grace, ID | PacifiCorp East (PACE) | 88.1 GWh | Jun 1923 | Dec 2024 | Water |
| ID Solar | AES Distributed Energy | Kuna, ID | Idaho Power Company (IPCO) | 85.3 GWh | Jul 2016 | Dec 2024 | Solar |
| Smith Falls Hydro Project | Smith Creek Hydro, LLC | Bonners Ferry, ID | Bonneville Power Administration (BPAT) | 83.0 GWh | Nov 1989 | Nov 2024 | Water |
| High Mesa | High Mesa Energy, LLC | King Hill, ID | Idaho Power Company (IPCO) | 82.5 GWh | Nov 2012 | Sep 2025 | Wind |
| Arrowrock Hydroelectric Project | Boise-Kuna Irrigation District | Boise, ID | Idaho Power Company (IPCO) | 73.0 GWh | Mar 2010 | Dec 2024 | Water |
| Shoshone Falls | Idaho Power Co | Twin Falls, ID | Idaho Power Company (IPCO) | 71.3 GWh | Jul 1907 | Dec 2024 | Water |
| Camp Reed | Idaho Wind Partners 1 LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 69.4 GWh | Nov 2010 | Dec 2024 | Wind |
| Post Falls | Avista Corp | Post Falls, ID | Avista Corporation (AVA) | 69.1 GWh | Jun 1906 | Dec 2024 | Water |
| Yahoo Creek | Idaho Wind Partners 1 LLC | Hagerman, ID | Idaho Power Company (IPCO) | 68.4 GWh | Nov 2010 | Dec 2024 | Wind |
| Payne's Ferry | Idaho Wind Partners 1 LLC | Hagerman, ID | Idaho Power Company (IPCO) | 67.8 GWh | Nov 2010 | Dec 2024 | Wind |
| Simplot Leasing Don Plant | Simplot Leasing Corp | Pocatello, ID | Idaho Power Company (IPCO) | 65.9 GWh | Jan 1986 | Sep 2025 | Waste Heat |
| Salmon Falls Wind Park | Idaho Wind Partners 1 LLC | Hagerman, ID | Idaho Power Company (IPCO) | 64.4 GWh | Mar 2011 | Dec 2024 | Wind |
| Two Ponds Windfarm | Mountain Air Projects, LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 63.9 GWh | Nov 2012 | Dec 2024 | Wind |
| Desert Meadow Windfarm | Mountain Air Projects, LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 62.9 GWh | Nov 2012 | Dec 2024 | Wind |
| Hammett Hill Windfarm | Mountain Air Projects, LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 62.2 GWh | Nov 2012 | Dec 2024 | Wind |
| Mainline Windfarm | Mountain Air Projects, LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 61.7 GWh | Nov 2012 | Dec 2024 | Wind |
| Power County Wind Park North | Power County Wind Park North LLC | American Falls, ID | PacifiCorp East (PACE) | 61.3 GWh | Nov 2011 | Dec 2024 | Wind |
| Burley Butte Windpark | Idaho Wind Partners 1 LLC | Burley, ID | Idaho Power Company (IPCO) | 61.1 GWh | Jan 2011 | Dec 2024 | Wind |
| Sawtooth Wind Project | Idaho Winds LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 60.3 GWh | Sep 2011 | Dec 2024 | Wind |
| Black Canyon | U S Bureau of Reclamation | Emmet, ID | Bonneville Power Administration (BPAT) | 58.8 GWh | Nov 1925 | Dec 2024 | Water |
| Upper Malad | Idaho Power Co | Hagerman, ID | Idaho Power Company (IPCO) | 58.3 GWh | May 1948 | Dec 2024 | Water |
| Ryegrass Windfarm | Mountain Air Projects, LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 57.9 GWh | Nov 2012 | Dec 2024 | Wind |
| Milner Dam Wind Park LLC | Idaho Wind Partners 1 LLC | Burley, ID | Idaho Power Company (IPCO) | 56.2 GWh | Jan 2011 | Dec 2024 | Wind |
| Cold Springs Windfarm | Mountain Air Projects, LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 55.6 GWh | Nov 2012 | Dec 2024 | Wind |
| Thousand Springs | Idaho Power Co | Wendell, ID | Idaho Power Company (IPCO) | 54.8 GWh | Jul 1912 | Dec 2024 | Water |
| Power County Wind Park South | Power County Wind Park South LLC | American Falls, ID | PacifiCorp East (PACE) | 53.4 GWh | Nov 2011 | Dec 2024 | Wind |
| Amalgamated Sugar LLC Nampa | Amalgamated Sugar Co-Nampa | Nampa, ID | Idaho Power Company (IPCO) | 51.9 GWh | Sep 1948 | Dec 2024 | Natural Gas |
| Simcoe Solar | Simcoe Solar | Mountain Home, ID | Idaho Power Company (IPCO) | 49.0 GWh | Feb 2017 | Sep 2025 | Solar |
| Falls River Hydro | Marysville Hydro Partners | Ashton, ID | Bonneville Power Administration (BPAT) | 47.4 GWh | Jul 1993 | Dec 2024 | Water |
| Mt. Home Solar 1, LLC | Standard Solar | Pocatello, ID | Idaho Power Company (IPCO) | 47.2 GWh | Feb 2017 | Dec 2024 | Solar |
| American Falls Solar II | American Falls Solar II, LLC | American Falls, ID | Idaho Power Company (IPCO) | 45.7 GWh | Feb 2017 | Sep 2025 | Solar |
| Orchard Ranch Solar | Orchard Ranch Solar, LLC | Orchard, ID | Idaho Power Company (IPCO) | 45.1 GWh | Feb 2017 | Sep 2025 | Solar |
| Upper Power Plant | City of Idaho Falls - (ID) | Idaho Falls, ID | PacifiCorp East (PACE) | 44.9 GWh | Aug 1982 | Dec 2024 | Water |
| American Falls Solar | American Falls Solar LLC | American Falls, ID | Idaho Power Company (IPCO) | 44.5 GWh | Feb 2017 | Sep 2025 | Solar |
| Horseshoe Bend Hydroelectric Co | Horseshoe Bend Hydroelectric Co | Horseshoe Bend, ID | Idaho Power Company (IPCO) | 42.0 GWh | Mar 1995 | Dec 2024 | Water |
| Oneida | PacifiCorp | Riverdale, ID | PacifiCorp East (PACE) | 42.0 GWh | Jun 1915 | Dec 2024 | Water |
| Murphy Flat Solar | Murphy Flat Power, LLC | Murphy, ID | Idaho Power Company (IPCO) | 40.7 GWh | Mar 2017 | Sep 2025 | Solar |
| Oregon Trail Wind Park | Idaho Wind Partners 1 LLC | Hagerman, ID | Idaho Power Company (IPCO) | 40.6 GWh | Dec 2010 | Dec 2024 | Wind |
| City Power Plant | City of Idaho Falls - (ID) | Idaho Falls, ID | PacifiCorp East (PACE) | 40.4 GWh | Jun 1982 | Dec 2024 | Water |
| BYUI Central Energy Facility | Brigham Young Univ Idaho | Rexburg, ID | PacifiCorp East (PACE) | 39.9 GWh | Jul 2015 | Sep 2025 | Natural Gas |
| Bennett Creek Windfarm LLC - Mountain Home | Bennett Creek Windfarm LLC | Mountain Home, ID | Idaho Power Company (IPCO) | 39.0 GWh | Jun 2008 | Sep 2025 | Wind |
| Lower No 1 | City of Idaho Falls - (ID) | Idaho Falls, ID | PacifiCorp East (PACE) | 38.9 GWh | Mar 1982 | Dec 2024 | Water |
| Cascade Dam (ID) | Idaho Power Co | Cascade, ID | Idaho Power Company (IPCO) | 37.4 GWh | Nov 1983 | Dec 2024 | Water |
| Cassia Gulch | Cassia Gulch Wind Park, LLC | Hagerman, ID | Idaho Power Company (IPCO) | 36.1 GWh | Feb 2009 | Sep 2025 | Wind |
| Mountain Home | Hot Springs Windfarm, LLC | Mountain Home, ID | Idaho Power Company (IPCO) | 35.2 GWh | Apr 2008 | Sep 2025 | Wind |
| Golden Valley Wind Park LLC | Idaho Wind Partners 1 LLC | Burley, ID | Idaho Power Company (IPCO) | 34.8 GWh | Dec 2010 | Dec 2024 | Wind |
| Pilgrim Stage Wind Park | Idaho Wind Partners 1 LLC | Hagerman, ID | Idaho Power Company (IPCO) | 34.3 GWh | Dec 2010 | Dec 2024 | Wind |
| Thousand Springs Wind Park | Idaho Wind Partners 1 LLC | Hagerman, ID | Idaho Power Company (IPCO) | 34.1 GWh | Dec 2010 | Dec 2024 | Wind |
| Ashton | PacifiCorp | Ashton, ID | PacifiCorp East (PACE) | 32.6 GWh | Jun 1917 | Dec 2024 | Water |
| Tuana Gulch Wind Park | Idaho Wind Partners 1 LLC | Hagerman, ID | Idaho Power Company (IPCO) | 29.3 GWh | Dec 2010 | Dec 2024 | Wind |
| Tuana Springs | Tuana Springs Energy, LLC | Hagerman, ID | Idaho Power Company (IPCO) | 28.8 GWh | Apr 2010 | Sep 2025 | Wind |
| Wilson Lake Hydroelectric Project | Hazelton/Wilson Joint Venture | Eden, ID | Idaho Power Company (IPCO) | 28.7 GWh | Apr 1993 | Oct 2024 | Water |
| Amalgamated Sugar Twin Falls | The Amalgamated Sugar Co | Twin Falls, ID | Idaho Power Company (IPCO) | 28.5 GWh | Nov 1948 | Dec 2024 | Natural Gas |
| Felt | Fall River Rural Elec Coop Inc | Felt, ID | PacifiCorp East (PACE) | 27.8 GWh | Aug 1946 | Dec 2024 | Water |
| Bypass | North Side Energy Company | Hazelton, ID | Idaho Power Company (IPCO) | 27.2 GWh | Feb 1987 | Oct 2024 | Water |
| South Forks Hydro | South Forks Joint Venture | Hansen, ID | Idaho Power Company (IPCO) | 26.0 GWh | Nov 1984 | Oct 2024 | Water |
| S E Hazelton A | North Side Energy Company | Hazelton, ID | Idaho Power Company (IPCO) | 24.7 GWh | May 1990 | Oct 2024 | Water |
| Fossil Gulch | Greenbacker Renewable Energy Corporation | Hagerman, ID | Idaho Power Company (IPCO) | 24.5 GWh | Jan 2005 | Dec 2024 | Wind |
| Hazelton B Hydro | Hazelton/Wilson Joint Venture | Hazelton, ID | Idaho Power Company (IPCO) | 24.2 GWh | Mar 1993 | Oct 2024 | Water |
| Milner Butte LFGE | Southern Idaho Solid Waste | Burley, ID | Idaho Power Company (IPCO) | 24.1 GWh | Sep 2018 | Dec 2024 | Landfill Gas |
| Moyie Springs | City of Bonners Ferry | Moyie Springs, ID | Bonneville Power Administration (BPAT) | 20.9 GWh | Nov 1921 | Dec 2024 | Water |
| Magic Dam Hydroelectric Project | Wood Hydro, LLC | Shoshone, ID | Idaho Power Company (IPCO) | 19.9 GWh | Apr 1989 | Sep 2024 | Water |
| Fighting Creek LFGTE Plant | Kootenai Renewable Energy LLC | Coeur d'Alene, ID | Avista Corporation (AVA) | 19.9 GWh | Feb 2012 | Dec 2024 | Landfill Gas |
Browse Power Plants By Idaho Counties
Figures are based on September 2025 generation numbers.| County | State Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Elmore County, ID | # 1 | 26 | 3.2 TWh |
| Kootenai County, ID | # 2 | 4 | 2.3 TWh |
| Washington County, ID | # 3 | 2 | 2.2 TWh |
| Bonneville County, ID | # 4 | 13 | 2.0 TWh |
| Payette County, ID | # 5 | 1 | 1.8 TWh |
| Twin Falls County, ID | # 6 | 40 | 1.4 TWh |
| Clearwater County, ID | # 7 | 2 | 1.4 TWh |
| Bonner County, ID | # 8 | 2 | 1.0 TWh |
| Ada County, ID | # 9 | 13 | 968.2 GWh |
| Gooding County, ID | # 10 | 14 | 845.9 GWh |
| Power County, ID | # 11 | 6 | 698.0 GWh |
| Owyhee County, ID | # 12 | 3 | 457.8 GWh |
| Nez Perce County, ID | # 13 | 1 | 451.0 GWh |
| Bingham County, ID | # 14 | 2 | 431.1 GWh |
| Cassia County, ID | # 15 | 10 | 367.0 GWh |
| Jerome County, ID | # 16 | 13 | 188.4 GWh |
| Minidoka County, ID | # 17 | 2 | 111.7 GWh |
| Caribou County, ID | # 18 | 4 | 111.6 GWh |
| County | State Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Fremont County, ID | # 19 | 4 | 106.0 GWh |
| Boundary County, ID | # 20 | 2 | 103.9 GWh |
| Bannock County, ID | # 21 | 4 | 85.5 GWh |
| Gem County, ID | # 22 | 2 | 58.8 GWh |
| Franklin County, ID | # 23 | 2 | 53.0 GWh |
| Canyon County, ID | # 24 | 4 | 52.3 GWh |
| Boise County, ID | # 25 | 1 | 42.0 GWh |
| Madison County, ID | # 26 | 1 | 39.9 GWh |
| Valley County, ID | # 27 | 1 | 37.4 GWh |
| Teton County, ID | # 28 | 2 | 27.8 GWh |
| Blaine County, ID | # 29 | 2 | 24.7 GWh |
| Lincoln County, ID | # 30 | 3 | 15.7 GWh |
| Adams County, ID | # 31 | 1 | 14.2 GWh |
| Clark County, ID | # 32 | 2 | 12.6 GWh |
| Butte County, ID | # 33 | 1 | 10.1 GWh |
| Jefferson County, ID | # 34 | 1 | 9.2 GWh |
| Lemhi County, ID | # 35 | 1 | 37.0 MWh |