Directory of Power Plants in Idaho
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Ryegrass Windfarm | Mountain Air Projects, LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 48.7 GWh | Nov 2012 | Dec 2025 | Wind |
| Hammett Hill Windfarm | Mountain Air Projects, LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 53.1 GWh | Nov 2012 | Dec 2025 | Wind |
| Mainline Windfarm | Mountain Air Projects, LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 52.2 GWh | Nov 2012 | Dec 2025 | Wind |
| Desert Meadow Windfarm | Mountain Air Projects, LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 54.3 GWh | Nov 2012 | Dec 2025 | Wind |
| Cold Springs Windfarm | Mountain Air Projects, LLC | Glenns Ferry, ID | Idaho Power Company (IPCO) | 46.6 GWh | Nov 2012 | Dec 2025 | Wind |
| Crystal Springs | Crystal Springs Hydro Elec LP | Filer, ID | Idaho Power Company (IPCO) | 8.5 GWh | Dec 1987 | Dec 2025 | Water |
| Felt | Fall River Rural Elec Coop Inc | Felt, ID | PacifiCorp East (PACE) | 24.2 GWh | Aug 1946 | Dec 2025 | Water |
| Black Canyon | U S Bureau of Reclamation | Emmet, ID | Bonneville Power Administration (BPAT) | 62.9 GWh | Nov 1925 | Dec 2025 | Water |
| Wilson Lake Hydroelectric Project | Hazelton/Wilson Joint Venture | Eden, ID | Idaho Power Company (IPCO) | 27.3 GWh | Apr 1993 | Oct 2025 | Water |
| Mile 28 Water Power Project | Wood Hydro, LLC | Eden, ID | Idaho Power Company (IPCO) | 5.3 GWh | May 1994 | Oct 2025 | Water |
| Fighting Creek LFGTE Plant | Kootenai Renewable Energy LLC | Coeur d'Alene, ID | Avista Corporation (AVA) | 21.8 GWh | Feb 2012 | Dec 2025 | Landfill Gas |
| Cabinet Gorge | Avista Corp | Clark Fork, ID | Avista Corporation (AVA) | 886.3 GWh | Aug 1952 | Dec 2025 | Water |
| Chester Diversion Hydroelectric Project | Fall River Rural Elec Coop Inc | Chester, ID | Bonneville Power Administration (BPAT) | 6.9 GWh | Apr 2014 | May 2026 | Water |
| Cascade Dam (ID) | Idaho Power Co | Cascade, ID | Idaho Power Company (IPCO) | 40.3 GWh | Nov 1983 | Dec 2025 | Water |
| Little Wood Hydro Project | Littlewood Irrigation District | Carey, ID | Idaho Power Company (IPCO) | 2.5 GWh | Jan 1985 | Aug 2025 | Water |
| Brownlee | Idaho Power Co | Cambridge, ID | Idaho Power Company (IPCO) | 2.3 TWh | Jul 1958 | Dec 2025 | Water |
| Milner Dam Wind Park LLC | Idaho Wind Partners 1 LLC | Burley, ID | Idaho Power Company (IPCO) | 50.5 GWh | Jan 2011 | Dec 2025 | Wind |
| Milner Butte LFGE | Southern Idaho Solid Waste | Burley, ID | Idaho Power Company (IPCO) | 26.7 GWh | Sep 2018 | Dec 2025 | Landfill Gas |
| Burley Butte Windpark | Idaho Wind Partners 1 LLC | Burley, ID | Idaho Power Company (IPCO) | 56.0 GWh | Jan 2011 | Dec 2025 | Wind |
| Golden Valley Wind Park LLC | Idaho Wind Partners 1 LLC | Burley, ID | Idaho Power Company (IPCO) | 27.9 GWh | Dec 2010 | Dec 2025 | Wind |
| Little Mac Project | Little Mac Power Company | Buhl, ID | Idaho Power Company (IPCO) | 4.3 GWh | Apr 1984 | Dec 2025 | Water |
| Lateral 10 Ventures | Lateral 10 Ventures | Buhl, ID | Idaho Power Company (IPCO) | 565.0 MWh | Oct 1984 | Dec 2025 | Water |
| Clear Lake | Idaho Power Co | Buhl, ID | Idaho Power Company (IPCO) | 11.8 GWh | Nov 1937 | Dec 2025 | Water |
| C J Strike | Idaho Power Co | Bruneau, ID | Idaho Power Company (IPCO) | 364.1 GWh | Feb 1952 | Dec 2025 | Water |
| Smith Falls Hydro Project | Smith Creek Hydro, LLC | Bonners Ferry, ID | Bonneville Power Administration (BPAT) | 87.2 GWh | Nov 1989 | Dec 2025 | Water |
| Matrix Pleasant Valley | Pleasant Valley Solar, LLC | Boise, ID | Idaho Power Company (IPCO) | 503.6 GWh | Feb 2025 | May 2026 | Solar |
| Pleasant Valley Solar 2 Project | PVS 2, LLC | Boise, ID | Idaho Power Company (IPCO) | 90.3 GWh | - | May 2026 | Solar |
| Hidden Hollow Energy | Hidden Hollow Energy LLC | Boise, ID | Idaho Power Company (IPCO) | 2.8 GWh | Dec 2006 | Dec 2025 | Landfill Gas |
| Arrowrock Hydroelectric Project | Boise-Kuna Irrigation District | Boise, ID | Idaho Power Company (IPCO) | 63.2 GWh | Mar 2010 | Dec 2025 | Water |
| Barber Dam | Barber Pool Hydro LLC | Boise, ID | Idaho Power Company (IPCO) | 6.7 GWh | Jul 1990 | Dec 2025 | Water |
| Lucky Peak Power Plant Project | Boise-Kuna Irrigation District | Boise, ID | Idaho Power Company (IPCO) | 311.2 GWh | Sep 1988 | Dec 2025 | Water |
| Boise R Diversion | U S Bureau of Reclamation | Boise, ID | Idaho Power Company (IPCO) | 73.0 MWh | May 2004 | Dec 2025 | Water |
| Bliss (ID) | Idaho Power Co | Bliss, ID | Idaho Power Company (IPCO) | 297.7 GWh | Oct 1949 | Dec 2025 | Water |
| Falls River Hydro | Marysville Hydro Partners | Ashton, ID | Bonneville Power Administration (BPAT) | 43.2 GWh | Jul 1993 | Dec 2025 | Water |
| Ashton | PacifiCorp | Ashton, ID | PacifiCorp East (PACE) | 28.0 GWh | Jun 1917 | Dec 2025 | Water |
| American Falls Solar II | American Falls Solar II, LLC | American Falls, ID | Idaho Power Company (IPCO) | 45.4 GWh | Feb 2017 | May 2026 | Solar |
| American Falls Solar | American Falls Solar LLC | American Falls, ID | Idaho Power Company (IPCO) | 43.6 GWh | Feb 2017 | May 2026 | Solar |
| Rockland Wind Farm | Ridgeline Energy LLC | American Falls, ID | Idaho Power Company (IPCO) | 219.4 GWh | Nov 2011 | Dec 2025 | Wind |
| Power County Wind Park North | Power County Wind Park North LLC | American Falls, ID | PacifiCorp East (PACE) | 63.9 GWh | Nov 2011 | Dec 2025 | Wind |
| Power County Wind Park South | Power County Wind Park South LLC | American Falls, ID | PacifiCorp East (PACE) | 56.8 GWh | Nov 2011 | Dec 2025 | Wind |
| American Falls | Idaho Power Co | American Falls, ID | Idaho Power Company (IPCO) | 206.3 GWh | Feb 1978 | Dec 2025 | Water |
| Dworshak | USACE Northwestern Division | Ahsahka, ID | Bonneville Power Administration (BPAT) | 1.5 TWh | Aug 1974 | Dec 2025 | Water |
Browse Power Plants By Idaho Counties
Figures are based on May 2026 generation numbers.| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Lemhi County, ID | # 35 | 1 | 56.0 MWh |
| Butte County, ID | # 34 | 1 | 7.8 GWh |
| Jefferson County, ID | # 33 | 1 | 9.2 GWh |
| Clark County, ID | # 32 | 2 | 10.4 GWh |
| Adams County, ID | # 31 | 1 | 13.7 GWh |
| Lincoln County, ID | # 30 | 3 | 15.3 GWh |
| Blaine County, ID | # 29 | 2 | 16.8 GWh |
| Teton County, ID | # 28 | 2 | 24.2 GWh |
| Madison County, ID | # 27 | 1 | 37.7 GWh |
| Canyon County, ID | # 26 | 4 | 39.5 GWh |
| Valley County, ID | # 25 | 1 | 40.3 GWh |
| Boise County, ID | # 24 | 1 | 46.8 GWh |
| Franklin County, ID | # 23 | 2 | 48.1 GWh |
| Gem County, ID | # 22 | 2 | 62.9 GWh |
| Fremont County, ID | # 21 | 4 | 87.8 GWh |
| Bannock County, ID | # 20 | 4 | 89.2 GWh |
| Minidoka County, ID | # 19 | 2 | 98.8 GWh |
| Caribou County, ID | # 18 | 4 | 102.4 GWh |
| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Boundary County, ID | # 17 | 2 | 108.6 GWh |
| Jerome County, ID | # 16 | 13 | 168.0 GWh |
| Cassia County, ID | # 15 | 10 | 282.9 GWh |
| Owyhee County, ID | # 14 | 3 | 401.1 GWh |
| Nez Perce County, ID | # 13 | 1 | 473.0 GWh |
| Bingham County, ID | # 12 | 2 | 504.9 GWh |
| Power County, ID | # 11 | 6 | 635.3 GWh |
| Gooding County, ID | # 10 | 14 | 773.4 GWh |
| Bonner County, ID | # 9 | 2 | 1.1 TWh |
| Ada County, ID | # 8 | 14 | 1.2 TWh |
| Twin Falls County, ID | # 7 | 40 | 1.3 TWh |
| Clearwater County, ID | # 6 | 2 | 1.5 TWh |
| Payette County, ID | # 5 | 1 | 1.7 TWh |
| Bonneville County, ID | # 4 | 13 | 1.8 TWh |
| Washington County, ID | # 3 | 2 | 2.3 TWh |
| Kootenai County, ID | # 2 | 4 | 2.6 TWh |
| Elmore County, ID | # 1 | 26 | 2.9 TWh |