Dworshak
Clearwater County, Idaho · EIA plant ID 840 · Operator: USACE Northwestern Division
Nameplate465MWSummer 465 MW
Generators3in service
Net generation1,517GWh12 mo to Dec 2025
Capacity factor37%hydro units, summer MW
Heat rate—thermal plants only
First online1974
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 | 1,086.8 | 27.0% | — |
| 2002 | 2,036.4 | 50.5% | — |
| 2003 | 1,699 | 42.2% | — |
| 2004 | 1,653.7 | 47.1% | — |
| 2005 | 1,603.7 | 45.8% | — |
| 2006 | 1,951.5 | 55.7% | — |
| 2007 | 1,828 | 52.2% | — |
| 2008 | 1,902.4 | 54.1% | — |
| 2009 | 1,845.3 | 52.7% | — |
| 2010 | 1,289.2 | 36.8% | — |
| 2011 | 2,329.2 | 66.5% | — |
| 2012 | 1,991.8 | 56.7% | — |
| 2013 | 1,833.8 | 52.3% | — |
| 2014 | 1,744.7 | 49.8% | — |
| 2015 | 1,614.9 | 46.1% | — |
| 2016 | 1,693.7 | 48.2% | — |
| 2017 | 1,437 | 41.0% | — |
| 2018 | 1,598.5 | 39.2% | — |
| 2019 | 1,702.3 | 41.8% | — |
| 2020 | 1,637.8 | 40.1% | — |
| 2021 | 1,482.1 | 36.4% | — |
| 2022 | 2,004.7 | 49.2% | — |
| 2023 | 1,444.6 | 35.5% | — |
| 2024 | 1,353.6 | 33.1% | — |
| 2025 | 1,516.7 | 37.2% | — |
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 | 103 | 103 | Jun 1975 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 103 | 103 | Sep 1975 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 259 | 259 | Sep 1974 | Operating | — | coming soon |
Owner / operator
Operator: USACE Northwestern Division. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| USACE Northwestern Division | 100.0% | 465 MW |
Nearby plants
Within 80 km.
| Ford Hydro LP | 1 MW | 30.4 km |
| Clearwater Paper IPP Lewiston | 114 MW | 53 km |
| Grimes Way | 4 MW | 69.4 km |
| Biotech LS 0836 | 1 MW | 70.1 km |