Rocky Reach
Chelan County, Washington · EIA plant ID 3883 · Operator: PUD No 1 of Chelan County
Nameplate1,349MWSummer 1,254 MW
Generators11in service
Net generation6,398GWh12 mo to Aug 2026
Capacity factor58%hydro units, summer MW
Heat rate—thermal plants only
First online1961
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 | 4,301 | 38.4% | — |
| 2002 | 5,841.5 | 52.1% | — |
| 2003 | 5,272 | 47.0% | — |
| 2004 | 5,425.5 | 48.3% | — |
| 2005 | 5,756.9 | 51.4% | — |
| 2006 | 6,148.2 | 54.9% | — |
| 2007 | 6,303.7 | 55.4% | — |
| 2008 | 5,779.6 | 50.6% | — |
| 2009 | 5,341.6 | 48.6% | — |
| 2010 | 5,070.8 | 46.2% | — |
| 2011 | 7,168.2 | 65.3% | — |
| 2012 | 6,953.3 | 63.1% | — |
| 2013 | 6,360.9 | 57.9% | — |
| 2014 | 6,293.8 | 57.3% | — |
| 2015 | 5,948.2 | 54.1% | — |
| 2016 | 6,069.4 | 55.1% | — |
| 2017 | 6,141.1 | 55.9% | — |
| 2018 | 6,287.8 | 57.2% | — |
| 2019 | 5,020.8 | 45.7% | — |
| 2020 | 5,896.2 | 53.5% | — |
| 2021 | 5,728.9 | 52.2% | — |
| 2022 | 6,448.5 | 58.7% | — |
| 2023 | 5,001.5 | 45.5% | — |
| 2024 | 4,901.1 | 44.5% | — |
| 2025 | 5,241.1 | 47.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| C-1 | Conventional Hydroelectric | HY | 114 | 104.9 | Jun 1961 | Operating | — | coming soon |
| C-10 | Conventional Hydroelectric | HY | 137.8 | 129.9 | Jan 1974 | Operating | — | coming soon |
| C-11 | Conventional Hydroelectric | HY | 137.8 | 129.9 | Feb 1974 | Operating | — | coming soon |
| C-2 | Conventional Hydroelectric | HY | 114 | 104.9 | Jun 1961 | Operating | — | coming soon |
| C-3 | Conventional Hydroelectric | HY | 114 | 104.9 | Jun 1961 | Operating | — | coming soon |
| C-4 | Conventional Hydroelectric | HY | 114 | 104.9 | Aug 1961 | Operating | — | coming soon |
| C-5 | Conventional Hydroelectric | HY | 114 | 104.9 | Aug 1961 | Operating | — | coming soon |
| C-6 | Conventional Hydroelectric | HY | 114 | 104.9 | Aug 1961 | Operating | — | coming soon |
| C-7 | Conventional Hydroelectric | HY | 114 | 104.9 | Sep 1961 | Operating | — | coming soon |
| C-8 | Conventional Hydroelectric | HY | 137.8 | 129.9 | Aug 1973 | Operating | — | coming soon |
| C-9 | Conventional Hydroelectric | HY | 137.8 | 129.9 | Nov 1973 | Operating | — | coming soon |
Owner / operator
Operator: PUD No 1 of Chelan 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 Chelan County | 100.0% | 1,349 MW |
Nearby plants
Within 80 km.
| Rock Island | 629 MW | 25.9 km |
| Orion - Helion | — | 26.2 km |
| Chelan | 59 MW | 39.6 km |
| PEC Headworks | retired | 51.3 km |
| SR Quincy Valley | — | 52.6 km |
| Sagebrush Power Partners | 101 MW | 53.2 km |