Wells
Douglas County, Washington · EIA plant ID 3886 · Operator: PUD No 1 of Douglas County
Nameplate867MWSummer 880 MW
Generators10in service
Net generation4,376GWh12 mo to Aug 2026
Capacity factor57%hydro units, summer MW
Heat rate—thermal plants only
First online1967
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 | 2,950.8 | 40.1% | — |
| 2002 | 4,189.7 | 56.9% | — |
| 2003 | 3,844.7 | 52.3% | — |
| 2004 | 3,876.4 | 52.5% | — |
| 2005 | 4,063.3 | 55.2% | — |
| 2006 | 4,123.4 | 56.0% | — |
| 2007 | 4,309.5 | 58.6% | — |
| 2008 | 3,820.9 | 51.8% | — |
| 2009 | 3,759.3 | 51.1% | — |
| 2010 | 3,526 | 47.9% | — |
| 2011 | 4,671.6 | 63.5% | — |
| 2012 | 4,655.8 | 63.1% | — |
| 2013 | 4,479.7 | 60.9% | — |
| 2014 | 4,433.4 | 60.3% | — |
| 2015 | 4,305 | 58.5% | — |
| 2016 | 4,321 | 58.6% | — |
| 2017 | 4,542.2 | 61.7% | — |
| 2018 | 4,438.9 | 60.3% | — |
| 2019 | 3,687 | 50.1% | — |
| 2020 | 4,377 | 59.3% | — |
| 2021 | 4,074.3 | 55.4% | — |
| 2022 | 4,487.2 | 59.0% | — |
| 2023 | 3,498.3 | 45.7% | — |
| 2024 | 3,502.4 | 45.6% | — |
| 2025 | 3,707.9 | 48.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| U-1 | Conventional Hydroelectric | HY | 77.4 | 84 | Sep 1967 | Operating | — | coming soon |
| U-10 | Conventional Hydroelectric | HY | 89 | 89 | Jan 1969 | Operating | — | coming soon |
| U-2 | Conventional Hydroelectric | HY | 89 | 89 | Oct 1967 | Operating | — | coming soon |
| U-3 | Conventional Hydroelectric | HY | 89 | 89 | Sep 1967 | Operating | — | coming soon |
| U-4 | Conventional Hydroelectric | HY | 89 | 89 | Sep 1967 | Operating | — | coming soon |
| U-5 | Conventional Hydroelectric | HY | 89 | 89 | Sep 1967 | Operating | — | coming soon |
| U-6 | Conventional Hydroelectric | HY | 89 | 89 | Sep 1967 | Operating | — | coming soon |
| U-7 | Conventional Hydroelectric | HY | 89 | 89 | Sep 1967 | Operating | — | coming soon |
| U-8 | Conventional Hydroelectric | HY | 89 | 89 | Oct 1968 | Operating | — | coming soon |
| U-9 | Conventional Hydroelectric | HY | 77.4 | 84 | Jan 1969 | Operating (Out of service) | — | coming soon |
Owner / operator
Operator: PUD No 1 of Douglas County. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| PUD No 1 of Douglas County | 100.0% | 867 MW |
Nearby plants
Within 80 km.
| Chelan | 59 MW | 16.7 km |
| Chief Joseph | 2,456 MW | 17.6 km |
| Main Canal Headworks | 27 MW | 56 km |
| Rocky Reach | 1,349 MW | 56.1 km |
| Summer Falls Power Plant | 92 MW | 65.4 km |
| Grand Coulee | 6,809 MW | 66.1 km |