Brownlee
Washington County, Idaho · EIA plant ID 811 · Operator: Idaho Power Co
Nameplate675MWSummer 702 MW
Generators5in service
Net generation2,256GWh12 mo to Dec 2025
Capacity factor37%hydro units, summer MW
Heat rate—thermal plants only
First online1958
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), hydro 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 1,633.3 | 25.6% | — |
| 2002 | 1,838.6 | 28.8% | — |
| 2003 | 1,943.3 | 39.5% | — |
| 2004 | 1,881.5 | 38.1% | — |
| 2005 | 1,956.8 | 39.8% | — |
| 2006 | 2,925.8 | 59.4% | — |
| 2007 | 1,827.1 | 37.1% | — |
| 2008 | 2,118.6 | 42.9% | — |
| 2009 | 2,406.8 | 36.9% | — |
| 2010 | 2,245 | 34.4% | — |
| 2011 | 2,923.9 | 44.9% | — |
| 2012 | 2,299.6 | 35.2% | — |
| 2013 | 1,675.4 | 25.7% | — |
| 2014 | 1,917.4 | 29.4% | — |
| 2015 | 1,718.8 | 26.4% | — |
| 2016 | 2,013.3 | 30.8% | — |
| 2017 | 2,394.3 | 36.7% | — |
| 2018 | 2,418.9 | 37.1% | — |
| 2019 | 2,538.7 | 39.0% | — |
| 2020 | 2,065 | 31.6% | — |
| 2021 | 1,543.1 | 26.2% | — |
| 2022 | 1,578.9 | 27.0% | — |
| 2023 | 2,087.7 | 35.0% | — |
| 2024 | 2,209.1 | 38.0% | — |
| 2025 | 2,255.6 | 36.6% | — |
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 | Conventional Hydroelectric | HY | 112.5 | 126.7 | Jan 1959 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 112.5 | 109.2 | Dec 1958 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 112.5 | 125 | Oct 1958 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 112.5 | 123.6 | Aug 1958 | Operating | — | coming soon |
| 5 | Conventional Hydroelectric | HY | 225 | 217.9 | Mar 1980 | 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% | 675 MW |
Nearby plants
Within 80 km.
| Oxbow (OR) | 190 MW | 15.8 km |
| Tamarack Energy Partnership | 6 MW | 42.3 km |
| Hells Canyon | 411 MW | 47.8 km |
| Wallowa Falls | 1 MW | 53.8 km |
| Prospector Windfarm (Burnt River) | 10 MW | 54.5 km |
| Jett Creek Windfarm (Burnt River) | 10 MW | 54.6 km |