Swift 1
Skamania County, Washington · EIA plant ID 3850 · Operator: PacifiCorp
Nameplate240MWSummer 264 MW
Generators3in service
Net generation515GWh12 mo to Aug 2026
Capacity factor22%hydro units, summer MW
Heat rate—thermal plants only
First online1958
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 | 430 | 18.6% | — |
| 2002 | 649.7 | 28.1% | — |
| 2003 | 684.3 | 29.6% | — |
| 2004 | 568 | 24.5% | — |
| 2005 | 531.1 | 23.0% | — |
| 2006 | 817.3 | 35.4% | — |
| 2007 | 629.2 | 27.3% | — |
| 2008 | 591.6 | 25.6% | — |
| 2009 | 591.6 | 25.6% | — |
| 2010 | 733.9 | 31.8% | — |
| 2011 | 791.5 | 34.3% | — |
| 2012 | 809.3 | 34.9% | — |
| 2013 | 574.1 | 24.9% | — |
| 2014 | 812.2 | 35.2% | — |
| 2015 | 583.5 | 25.3% | — |
| 2016 | 761.6 | 32.9% | — |
| 2017 | 866.8 | 37.5% | — |
| 2018 | 545.4 | 23.6% | — |
| 2019 | 369.1 | 16.0% | — |
| 2020 | 569.7 | 24.6% | — |
| 2021 | 591.3 | 25.6% | — |
| 2022 | 616.7 | 26.7% | — |
| 2023 | 580.3 | 25.1% | — |
| 2024 | 519.5 | 22.4% | — |
| 2025 | 534.7 | 23.2% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| HY11 | Conventional Hydroelectric | HY | 80 | 87.9 | Dec 1958 | Operating | — | coming soon |
| HY12 | Conventional Hydroelectric | HY | 80 | 87.9 | Dec 1958 | Operating | — | coming soon |
| HY13 | Conventional Hydroelectric | HY | 80 | 87.9 | Dec 1958 | Operating | — | coming soon |
Owner / operator
Operator: PacifiCorp. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| PacifiCorp | 100.0% | 240 MW |
Nearby plants
Within 80 km.
| Swift 2 | 72 MW | 4.5 km |
| Yale | 134 MW | 15 km |
| Merwin | 136 MW | 29.6 km |
| Cowlitz Falls | 70 MW | 45.6 km |
| Bonneville | 1,162 MW | 50.5 km |
| Mossyrock | 300 MW | 55.4 km |