Round Butte
Jefferson County, Oregon · EIA plant ID 3050 · Operator: Portland General Electric Co
Nameplate373MWSummer 353 MW
Generators3in service
Net generation772GWh12 mo to Dec 2025
Capacity factor25%hydro units, summer MW
Heat rate—thermal plants only
First online1964
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 | 890.2 | 33.9% | — |
| 2002 | 906.2 | 34.5% | — |
| 2003 | 906.8 | 35.1% | — |
| 2004 | 960 | 37.0% | — |
| 2005 | 890.2 | 34.4% | — |
| 2006 | 1,123.7 | 38.0% | — |
| 2007 | 966 | 32.6% | — |
| 2008 | 965.1 | 32.5% | — |
| 2009 | 977 | 33.0% | — |
| 2010 | 1,000.5 | 33.8% | — |
| 2011 | 1,110.6 | 37.5% | — |
| 2012 | 1,063.7 | 34.3% | — |
| 2013 | 949.1 | 30.7% | — |
| 2014 | 992.6 | 32.1% | — |
| 2015 | 919.9 | 29.8% | — |
| 2016 | 931.2 | 30.0% | — |
| 2017 | 1,035.6 | 33.5% | — |
| 2018 | 835.1 | 27.0% | — |
| 2019 | 870.8 | 28.2% | — |
| 2020 | 768.9 | 24.8% | — |
| 2021 | 748.2 | 24.2% | — |
| 2022 | 753.6 | 24.4% | — |
| 2023 | 780.2 | 25.2% | — |
| 2024 | 794.4 | 25.6% | — |
| 2025 | 772.4 | 25.0% | — |
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 | 112.5 | 110 | Aug 1964 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 130 | 121.5 | Nov 1964 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 130 | 121.5 | Oct 1964 | Operating | — | coming soon |
Owner / operator
Operator: Portland General Electric Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Portland General Electric Co | 50.1% | 187 MW |
| Warm Springs Power Enterprises | 49.9% | 186 MW |
Nearby plants
Within 80 km.
| Salmonfly Solar and Storage | — | 5.4 km |
| Elbe Solar Center | 10 MW | 5.9 km |
| Pelton | 110 MW | 10.5 km |
| Opal Springs Hydro | 4 MW | 13 km |
| 45 Mile Hydroelectric Project | 3 MW | 13.1 km |
| Green Solar LLC (CSG) | 3 MW | 13.4 km |