McNary
Umatilla County, Oregon · EIA plant ID 3084 · Operator: USACE Northwestern Division
Nameplate991MWSummer 967 MW
Generators14in service
Net generation4,016GWh12 mo to Dec 2025
Capacity factor47%hydro units, summer MW
Heat rate—thermal plants only
First online1953
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 | 4,788.1 | 48.5% | — |
| 2002 | 5,877.3 | 59.5% | — |
| 2003 | 5,754.1 | 58.3% | — |
| 2004 | 5,679.8 | 65.3% | — |
| 2005 | 4,876.8 | 56.2% | — |
| 2006 | 5,611.5 | 64.7% | — |
| 2007 | 5,356.4 | 61.7% | — |
| 2008 | 5,186.1 | 59.6% | — |
| 2009 | 5,092.9 | 58.7% | — |
| 2010 | 4,599.7 | 53.0% | — |
| 2011 | 5,850.7 | 67.4% | — |
| 2012 | 5,803.6 | 66.7% | — |
| 2013 | 5,270.3 | 60.7% | — |
| 2014 | 5,364.5 | 61.8% | — |
| 2015 | 5,150.3 | 59.4% | — |
| 2016 | 5,627.6 | 64.7% | — |
| 2017 | 5,709.4 | 65.8% | — |
| 2018 | 5,682.1 | 67.0% | — |
| 2019 | 4,474.4 | 52.7% | — |
| 2020 | 4,997 | 58.7% | — |
| 2021 | 4,336.6 | 51.2% | — |
| 2022 | 4,640.1 | 54.8% | — |
| 2023 | 3,645.5 | 43.1% | — |
| 2024 | 3,668.3 | 43.2% | — |
| 2025 | 4,016.5 | 47.4% | — |
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 | 70 | 70 | Dec 1953 | Operating | — | coming soon |
| 10 | Conventional Hydroelectric | HY | 70 | 70 | Nov 1955 | Operating | — | coming soon |
| 11 | Conventional Hydroelectric | HY | 70 | 70 | May 1956 | Operating | — | coming soon |
| 12 | Conventional Hydroelectric | HY | 70 | 70 | May 1956 | Operating | — | coming soon |
| 13 | Conventional Hydroelectric | HY | 70 | 70 | Mar 1957 | Operating | — | coming soon |
| 14 | Conventional Hydroelectric | HY | 80.5 | 80.5 | Mar 1957 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 70 | 70 | Jan 1954 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 70 | 70 | May 1954 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 70 | 70 | Jul 1954 | Operating | — | coming soon |
| 5 | Conventional Hydroelectric | HY | 70 | 58 | Oct 1954 | Operating (Out of service, expected back within the year) | — | coming soon |
| 6 | Conventional Hydroelectric | HY | 70 | 58 | Jan 1955 | Operating (Out of service, expected back within the year) | — | coming soon |
| 7 | Conventional Hydroelectric | HY | 70 | 70 | Mar 1955 | Operating | — | coming soon |
| 8 | Conventional Hydroelectric | HY | 70 | 70 | Jun 1955 | Operating | — | coming soon |
| 9 | Conventional Hydroelectric | HY | 70 | 70 | Sep 1956 | Operating | — | coming soon |
Owner / operator
Operator: USACE Northwestern Division. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| USACE Northwestern Division | 100.0% | 991 MW |
Nearby plants
Within 80 km.
| McNary Dam Fish Attraction Project | 10 MW | 0 km |
| NorWest Energy 9 LLC | 6 MW | 4.3 km |
| Hermiston Generating Plant | 621 MW | 16.1 km |
| Hermiston Power Partnership | 689 MW | 16.3 km |
| Nine Canyon | 96 MW | 23.3 km |
| Four Corners Windfarm LLC | 8 MW | 25.3 km |