The Dalles
Wasco County, Oregon · EIA plant ID 3895 · Operator: USACE Northwestern Division
Nameplate1,820MWSummer 1,823 MW
Generators24in service
Net generation6,519GWh12 mo to Aug 2026
Capacity factor41%hydro units, summer MW
Heat rate—thermal plants only
First online1957
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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 | 5,223.1 | 30.4% | — |
| 2002 | 6,576.6 | 38.3% | — |
| 2003 | 6,192.3 | 36.0% | — |
| 2004 | 6,123.2 | 38.2% | — |
| 2005 | 6,016.5 | 37.7% | — |
| 2006 | 7,128.2 | 44.6% | — |
| 2007 | 6,492.3 | 40.7% | — |
| 2008 | 6,360.6 | 39.7% | — |
| 2009 | 6,108 | 38.3% | — |
| 2010 | 5,608 | 35.1% | — |
| 2011 | 8,419.3 | 52.7% | — |
| 2012 | 7,805.6 | 48.8% | — |
| 2013 | 6,523.9 | 40.9% | — |
| 2014 | 6,946.3 | 43.5% | — |
| 2015 | 6,388.1 | 40.0% | — |
| 2016 | 6,744.4 | 42.1% | — |
| 2017 | 7,061.6 | 44.2% | — |
| 2018 | 7,161.2 | 44.9% | — |
| 2019 | 5,929.3 | 38.3% | — |
| 2020 | 6,705.2 | 43.2% | — |
| 2021 | 5,965.5 | 37.4% | — |
| 2022 | 6,735.9 | 42.2% | — |
| 2023 | 5,407 | 33.9% | — |
| 2024 | 5,431.1 | 33.9% | — |
| 2025 | 5,932.9 | 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 | 78 | 78 | Oct 1957 | Operating | — | coming soon |
| 10 | Conventional Hydroelectric | HY | 78 | 78 | Nov 1959 | Operating | — | coming soon |
| 11 | Conventional Hydroelectric | HY | 78 | 78 | Feb 1960 | Operating | — | coming soon |
| 12 | Conventional Hydroelectric | HY | 78 | 78 | May 1960 | Operating | — | coming soon |
| 13 | Conventional Hydroelectric | HY | 78 | 78 | Aug 1960 | Operating | — | coming soon |
| 14 | Conventional Hydroelectric | HY | 78 | 78 | Nov 1960 | Operating (Out of service, expected back within the year) | — | coming soon |
| 15 | Conventional Hydroelectric | HY | 86 | 86 | Feb 1973 | Operating (Out of service, expected back within the year) | — | coming soon |
| 16 | Conventional Hydroelectric | HY | 86 | 86 | Feb 1973 | Operating | — | coming soon |
| 17 | Conventional Hydroelectric | HY | 86 | 86 | Mar 1973 | Operating | — | coming soon |
| 18 | Conventional Hydroelectric | HY | 86 | 86 | Mar 1973 | Operating | — | coming soon |
| 19 | Conventional Hydroelectric | HY | 86 | 86 | May 1973 | Operating (Out of service) | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 78 | 78 | Nov 1957 | Operating | — | coming soon |
| 20 | Conventional Hydroelectric | HY | 86 | 86 | Jun 1973 | Operating (Out of service) | — | coming soon |
| 21 | Conventional Hydroelectric | HY | 86 | 86 | Nov 1973 | Operating (Out of service, expected back within the year) | — | coming soon |
| 22 | Conventional Hydroelectric | HY | 86 | 86 | Dec 1973 | Operating (Out of service, expected back within the year) | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 78 | 78 | Feb 1958 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 78 | 78 | May 1958 | Operating | — | coming soon |
| 5 | Conventional Hydroelectric | HY | 89.7 | 92.7 | Oct 1958 | Operating | — | coming soon |
| 6 | Conventional Hydroelectric | HY | 78 | 78 | Nov 1958 | Operating | — | coming soon |
| 7 | Conventional Hydroelectric | HY | 78 | 78 | Feb 1959 | Operating | — | coming soon |
| 8 | Conventional Hydroelectric | HY | 78 | 78 | May 1959 | Operating | — | coming soon |
| 9 | Conventional Hydroelectric | HY | 78 | 78 | Nov 1959 | Operating (Out of service, expected back within the year) | — | coming soon |
| F1 | Conventional Hydroelectric | HY | 14 | 14 | Jun 1957 | Operating (Out of service, expected back within the year) | — | coming soon |
| F2 | Conventional Hydroelectric | HY | 14 | 14 | Jul 1957 | Operating (Out of service, expected back within the year) | — | 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% | 1,820 MW |
Nearby plants
Within 80 km.
| Dalles Dam North Fishway Project | 7 MW | 0.2 km |
| Windy Flats Wind Project | 262 MW | 26.5 km |
| SDS Lumber Gorge Energy Division | retired | 28.2 km |
| Copper Dam Plant | 3 MW | 30.8 km |
| Linden Wind Energy Project | 50 MW | 30.9 km |
| Goldendale Generating Station | 303 MW | 32.1 km |