Bennett Mountain
Elmore County, Idaho · EIA plant ID 55733 · Operator: Idaho Power Co
Nameplate173MWSummer 185 MW
Generators1in service
Net generation999GWh12 mo to Dec 2025
Capacity factor62%gas/coal/oil units, summer MW
Heat rate10,794Btu/kWhfossil units, electric fuel, HHV
First online2005Runs as baseload
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2007 | 183.9 | 12.8% | 10,727 |
| 2008 | 49.1 | 3.4% | 10,726 |
| 2009 | 98.7 | 6.9% | 10,796 |
| 2010 | 41.8 | 2.9% | 11,142 |
| 2011 | 48.5 | 3.4% | 10,971 |
| 2012 | 53 | 3.7% | 11,078 |
| 2013 | 80.2 | 5.6% | 10,640 |
| 2014 | 70.5 | 4.9% | 10,709 |
| 2015 | 157.9 | 11.0% | 10,425 |
| 2016 | 103.2 | 7.2% | 10,524 |
| 2017 | 86.4 | 6.0% | 10,835 |
| 2018 | 149.2 | 10.4% | 10,913 |
| 2019 | 317.9 | 22.1% | 10,737 |
| 2020 | 310.1 | 21.5% | 10,881 |
| 2021 | 354.3 | 24.5% | 10,932 |
| 2022 | 235.8 | 13.2% | 11,430 |
| 2023 | 725.6 | 42.5% | 10,365 |
| 2024 | 919.1 | 59.9% | 10,771 |
| 2025 | 999.1 | 61.6% | 10,794 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | GT | 172.8 | 185.1 | Apr 2005 | Operating | — | coming soon |
Owner / operator
Operator: Idaho Power Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Idaho Power Co | 100.0% | 173 MW |
Nearby plants
Within 80 km.
| Elmore BESS | 4 MW | 5.3 km |
| Evander Andrews Power Complex | 271 MW | 6.5 km |
| Mt. Home Solar 1, LLC | 20 MW | 7.2 km |
| Crimson Orchard Solar and BESS | — | 7.5 km |
| Bennett Creek Windfarm LLC - Mountain Home | 21 MW | 18.4 km |
| Two Ponds Windfarm | 23 MW | 19.6 km |