Directory of Power Plants in Idaho
| County | State Rank | Active Plants | Jul 2025 Generation |
|---|
| Elmore County, ID | # 1 | 26 | 3.1 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 | 866.0 GWh |
| Gooding County, ID | # 10 | 14 | 845.9 GWh |
| Power County, ID | # 11 | 6 | 696.1 GWh |
| Owyhee County, ID | # 12 | 3 | 459.0 GWh |
| Nez Perce County, ID | # 13 | 1 | 447.4 GWh |
| Bingham County, ID | # 14 | 2 | 445.6 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 | Jul 2025 Generation |
|---|
| Fremont County, ID | # 19 | 4 | 106.0 GWh |
| Boundary County, ID | # 20 | 2 | 103.9 GWh |
| Bannock County, ID | # 21 | 4 | 84.9 GWh |
| Gem County, ID | # 22 | 2 | 58.8 GWh |
| Canyon County, ID | # 23 | 4 | 54.8 GWh |
| Franklin County, ID | # 24 | 2 | 53.0 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 | 15.4 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 | 44.0 MWh |
