Roza
Yakima County, Washington · EIA plant ID 6407 · Operator: U S Bureau of Reclamation
Nameplate13MWSummer 13 MW
Generators1in service
Net generation38GWh12 mo to Dec 2025
Capacity factor34%hydro units, summer MW
Heat rate—thermal plants only
First online1958
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 | 45.5 | 40.3% | — |
| 2002 | 67.6 | 59.8% | — |
| 2003 | 61.6 | 54.5% | — |
| 2004 | 60.1 | 53.1% | — |
| 2005 | 41.4 | 36.7% | — |
| 2006 | 71.9 | 63.7% | — |
| 2007 | 76.1 | 67.4% | — |
| 2008 | 53 | 46.7% | — |
| 2009 | 60.6 | 53.6% | — |
| 2010 | 42.2 | 37.3% | — |
| 2011 | 73.5 | 65.1% | — |
| 2012 | 77.3 | 68.2% | — |
| 2013 | 70.2 | 62.1% | — |
| 2014 | 67.5 | 59.7% | — |
| 2015 | 62.2 | 55.0% | — |
| 2016 | 67.6 | 59.7% | — |
| 2017 | 63.2 | 56.0% | — |
| 2018 | 72.3 | 64.0% | — |
| 2019 | 58.2 | 51.5% | — |
| 2020 | 54.2 | 47.8% | — |
| 2021 | 62.6 | 55.4% | — |
| 2022 | 50.4 | 44.6% | — |
| 2023 | 54.5 | 48.2% | — |
| 2024 | 47.7 | 42.1% | — |
| 2025 | 38.2 | 33.8% | — |
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 | 12.9 | 12.9 | Aug 1958 | Operating | — | coming soon |
Owner / operator
Operator: U S Bureau of Reclamation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| U S Bureau of Reclamation | 100.0% | 13 MW |
Nearby plants
Within 80 km.
| Orchard Avenue 1 | 2 MW | 15.5 km |
| Drop 2 (WA) | 3 MW | 19.3 km |
| Goose Prairie Solar | 80 MW | 20.7 km |
| Cowiche | 2 MW | 21.5 km |
| Drop 3 (WA) | 2 MW | 22.6 km |
| Ostrea Solar, LLC | 80 MW | 39.4 km |