Power plants in Elmore County, Idaho
20 operating power plants in Elmore County, Idaho, with 882 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Plants
20
Nameplate capacity
882 MW
Net generation, 2025
2.93 TWh
Largest power plants in Elmore County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Evander Andrews Power ComplexNatural gas | 225 | 926 | 39.0% |
| 2 | Bennett MountainNatural gas | 173 | 999 | 66.0% |
| 3 | Grand View Solar TwoSolar | 80 | 184 | 26.2% |
| 4 | Anderson RanchHydro | 40 | 85.8 | 24.5% |
| 5 | Black Mesa BESSBattery storage | 40 | −3.2* | – |
| 6 | Black Mesa Solar, LLCSolar | 40 | 89.2 | 25.4% |
| 7 | Ryegrass WindfarmWind | 23 | 48.7 | 24.2% |
| 8 | Hammett Hill WindfarmWind | 23 | 53.1 | 26.3% |
| 9 | Mainline WindfarmWind | 23 | 52.2 | 25.9% |
| 10 | Desert Meadow WindfarmWind | 23 | 54.3 | 26.9% |
| 11 | Cold Springs WindfarmWind | 23 | 46.6 | 23.1% |
| 12 | Two Ponds WindfarmWind | 23 | 55.2 | 27.4% |
| 13 | Camp ReedWind | 23 | 59.0 | 29.9% |
| 14 | Sawtooth Wind ProjectWind | 22 | 49.9 | 25.4% |
| 15 | Mountain HomeWind | 21 | 33.1 | 18.0% |
| 16 | Bennett Creek Windfarm LLC - Mountain HomeWind | 21 | 36.9 | 20.1% |
| 17 | Mt. Home Solar 1, LLCSolar | 20 | 48.5 | 27.7% |
| 18 | Simcoe SolarSolar | 20 | 48.9 | 27.9% |
| 19 | Arrowrock Hydroelectric ProjectHydro | 15 | 63.2 | 48.1% |
| 20 | Elmore BESSBattery storage | 4.0 | −0.4 | – |
* Fewer than 12 months of 2025 reported, so the total is partial.
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
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