Directory of Power Plants in Idaho
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Ashton | PacifiCorp | Ashton, ID | PacifiCorp East (PACE) | 30.2 GWh | Jun 1917 | Dec 2023 | Water |
| Arrowrock Hydroelectric Project | Boise-Kuna Irrigation District | Boise, ID | Idaho Power Company (IPCO) | 55.9 GWh | Mar 2010 | Dec 2023 | Water |
| Anderson Ranch | U S Bureau of Reclamation | Mountain Home, ID | Bonneville Power Administration (BPAT) | 121.6 GWh | Nov 1950 | Dec 2023 | Water |
| American Falls Solar II | American Falls Solar II, LLC | American Falls, ID | Idaho Power Company (IPCO) | 43.2 GWh | Feb 2017 | Sep 2024 | Solar |
| American Falls Solar | American Falls Solar LLC | American Falls, ID | Idaho Power Company (IPCO) | 43.9 GWh | Feb 2017 | Sep 2024 | Solar |
| American Falls | Idaho Power Co | American Falls, ID | Idaho Power Company (IPCO) | 262.2 GWh | Feb 1978 | Dec 2023 | Water |
| Amalgamated Sugar Twin Falls | The Amalgamated Sugar Co | Twin Falls, ID | Idaho Power Company (IPCO) | 36.5 GWh | Nov 1948 | Dec 2023 | Natural Gas |
| Amalgamated Sugar LLC Nampa | Amalgamated Sugar Co-Nampa | Nampa, ID | Idaho Power Company (IPCO) | 49.3 GWh | Sep 1948 | Dec 2023 | Natural Gas |
| Albeni Falls | USACE Northwestern Division | Oldtown, ID | Bonneville Power Administration (BPAT) | 164.4 GWh | Apr 1955 | Dec 2023 | Water |
| AJMS, LLC | AJMS, LLC | Shoshone, ID | Idaho Power Company (IPCO) | 3.9 GWh | Sep 2015 | Dec 2023 | Water |
Browse Power Plants By Idaho Counties
Figures are based on September 2024 generation numbers.| County | State Rank | Active Plants | Sep 2024 Generation |
|---|---|---|---|
| Lemhi County, ID | # 37 | 1 | 57.0 MWh |
| Idaho County, ID | # 36 | 1 | 3.6 GWh |
| Benewah County, ID | # 35 | 1 | 8.8 GWh |
| Clark County, ID | # 34 | 1 | 9.2 GWh |
| Jefferson County, ID | # 33 | 1 | 9.2 GWh |
| Butte County, ID | # 32 | 1 | 12.5 GWh |
| Adams County, ID | # 31 | 1 | 12.9 GWh |
| Lincoln County, ID | # 30 | 3 | 14.5 GWh |
| Blaine County, ID | # 29 | 2 | 26.4 GWh |
| Teton County, ID | # 28 | 2 | 26.7 GWh |
| Boise County, ID | # 27 | 1 | 35.5 GWh |
| Valley County, ID | # 26 | 1 | 35.5 GWh |
| Madison County, ID | # 25 | 1 | 39.4 GWh |
| Franklin County, ID | # 24 | 2 | 53.0 GWh |
| Canyon County, ID | # 23 | 4 | 53.2 GWh |
| Gem County, ID | # 22 | 2 | 56.9 GWh |
| Minidoka County, ID | # 21 | 2 | 59.4 GWh |
| Boundary County, ID | # 20 | 2 | 66.9 GWh |
| Bannock County, ID | # 19 | 4 | 89.3 GWh |
| County | State Rank | Active Plants | Sep 2024 Generation |
|---|---|---|---|
| Caribou County, ID | # 18 | 4 | 92.8 GWh |
| Fremont County, ID | # 17 | 4 | 98.5 GWh |
| Jerome County, ID | # 16 | 13 | 163.7 GWh |
| Bingham County, ID | # 15 | 2 | 226.0 GWh |
| Cassia County, ID | # 14 | 10 | 259.9 GWh |
| Nez Perce County, ID | # 13 | 1 | 371.6 GWh |
| Owyhee County, ID | # 12 | 3 | 419.9 GWh |
| Ada County, ID | # 11 | 11 | 634.1 GWh |
| Power County, ID | # 10 | 6 | 658.0 GWh |
| Gooding County, ID | # 9 | 14 | 750.7 GWh |
| Bonner County, ID | # 8 | 2 | 980.2 GWh |
| Twin Falls County, ID | # 7 | 40 | 1.2 TWh |
| Clearwater County, ID | # 6 | 2 | 1.4 TWh |
| Bonneville County, ID | # 5 | 12 | 1.6 TWh |
| Payette County, ID | # 4 | 1 | 1.9 TWh |
| Washington County, ID | # 3 | 2 | 2.1 TWh |
| Elmore County, ID | # 2 | 26 | 2.3 TWh |
| Kootenai County, ID | # 1 | 4 | 2.7 TWh |