Bennett Mountain
Natural gas power plant · Elmore County, Idaho
Nameplate capacity
173 MW
Rank in Idaho
#9
of 155 plants
In service since
2005
April 2005
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- Idaho Power Co
- County
- Elmore County
- Generating units
- 1
- Share of state capacity
- 2.63%
- Rank among natural gas plants in Idaho
- #4 of 9
- EIA plant code
- 55733
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | 173 MW | 185 MW | 2005 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Idaho
| Matrix Pleasant Valley | Solar | 200 MW |
| Palisades Dam | Hydro | 176 MW |
| Rathdrum | Natural gas | 166 MW |
| Cedar Creek Wind, LLC | Wind | 160 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 173 MW solar plant and a 173 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Idaho power plants · What Idaho actually generates