McNary
Hydro power plant in Umatilla County, Oregon. 850.5 MW of nameplate capacity across 12 generators, operated by USACE Northwestern Division.
Also known as McNary Powerhouse · EIA plant 3084
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 850.5 MWNameplate
- Generators
- 12 operatingEIA-860M, August 2026
- Operating since
- December 1953First generator online
- Operator
- USACE Northwestern DivisionEIA operator ID 19400
- Grid
- BPATBalancing authority BPAT
- Price nodes
- None linkedNo verified ISO node
- Location
- Umatilla County, OR45.9402, −119.2988
- EIA plant ID
- 3084EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power McNary produces
Free · EIA-923Net generation, 2025
4.02 TWh
4,016,454 MWh, final
Capacity factor, 2025
46.3%
2024: 42.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
3.6–5.7
TWh a year. Low 2023, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 6,073,380 | Not reported | 12 of 12 |
| 2001 | 4,788,083 | Not reported | 12 of 12 |
| 2002 | 5,877,293 | Not reported | 12 of 12 |
| 2003 | 5,754,077 | Not reported | 12 of 12 |
| 2004 | 5,679,791 | Not reported | 12 of 12 |
| 2005 | 4,876,821 | Not reported | 12 of 12 |
| 2006 | 5,611,495 | Not reported | 12 of 12 |
| 2007 | 5,356,361 | Not reported | 12 of 12 |
| 2008 | 5,186,107 | Not reported | 12 of 12 |
| 2009 | 5,092,866 | Not reported | 12 of 12 |
| 2010 | 4,599,712 | 53.0% | 12 of 12 |
| 2011 | 5,850,698 | 67.4% | 12 of 12 |
| 2012 | 5,803,559 | 66.7% | 12 of 12 |
| 2013 | 5,270,314 | 60.7% | 12 of 12 |
| 2014 | 5,364,541 | 61.8% | 12 of 12 |
| 2015 | 5,150,300 | 59.4% | 12 of 12 |
| 2016 | 5,627,633 | 64.7% | 12 of 12 |
| 2017 | 5,709,423 | 65.8% | 12 of 12 |
| 2018 | 5,682,145 | Not reported | 12 of 12 |
| 2019 | 4,474,352 | 51.6% | 12 of 12 |
| 2020 | 4,996,988 | 57.4% | 12 of 12 |
| 2021 | 4,336,640 | Not reported | 12 of 12 |
| 2022 | 4,640,050 | 53.5% | 12 of 12 |
| 2023 | 3,645,547 | 42.0% | 12 of 12 |
| 2024 | 3,668,282 | 42.2% | 12 of 12 |
| 2025 | 4,016,454 | 46.3% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 70.0 | December 1953 |
| 2 | Conventional Hydroelectric | 70.0 | January 1954 |
| 3 | Conventional Hydroelectric | 70.0 | May 1954 |
| 4 | Conventional Hydroelectric | 70.0 | July 1954 |
| 7 | Conventional Hydroelectric | 70.0 | March 1955 |
| 8 | Conventional Hydroelectric | 70.0 | June 1955 |
| 9 | Conventional Hydroelectric | 70.0 | September 1956 |
| 10 | Conventional Hydroelectric | 70.0 | November 1955 |
| 11 | Conventional Hydroelectric | 70.0 | May 1956 |
| 12 | Conventional Hydroelectric | 70.0 | May 1956 |
| 13 | Conventional Hydroelectric | 70.0 | March 1957 |
| 14 | Conventional Hydroelectric | 80.5 | March 1957 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists USACE Northwestern Division as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near McNary
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Questions about McNary
How much power does McNary produce?
McNary reported 4,016,454 MWh (4.02 TWh) of net generation in 2025, a 46.3% capacity factor on 850.5 MW of nameplate capacity.
Where is McNary?
McNary is in Umatilla County, Oregon, at 45.9402, −119.2988. It is in the Bonneville Power Administration balancing area (BPAT).
Who operates McNary?
EIA-860M for August 2026 lists USACE Northwestern Division as the operator (EIA operator ID 19400). The operator is not always the owner.
When did McNary start operating?
Its first generator began operating in December 1953, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page