John Day
Hydro power plant in Sherman County, Oregon. 1,485 MW of nameplate capacity across 11 generators, operated by USACE Northwestern Division.
Also known as John Day Powerhouse · EIA plant 3082
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 1,485 MWNameplate
- Generators
- 11 operatingEIA-860M, August 2026
- Operating since
- September 1968First generator online
- Operator
- USACE Northwestern DivisionEIA operator ID 19400
- Grid
- BPATBalancing authority BPAT
- Price nodes
- None linkedNo verified ISO node
- Location
- Sherman County, OR45.7164, −120.6941
- EIA plant ID
- 3082EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power John Day produces
Free · EIA-923Net generation, 2025
7.59 TWh
7,589,037 MWh, final
Capacity factor, 2025
40.1%
2024: 36.7%
January to July 2026
5.05 TWh
Provisional
Range, 2015 to 2025
6.8–10.5
TWh a year. Low 2023, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 9,546,026 | Not reported | 12 of 12 |
| 2001 | 7,097,219 | Not reported | 12 of 12 |
| 2002 | 8,997,737 | Not reported | 12 of 12 |
| 2003 | 8,573,086 | Not reported | 12 of 12 |
| 2004 | 8,331,616 | Not reported | 12 of 12 |
| 2005 | 8,177,708 | Not reported | 12 of 12 |
| 2006 | 9,418,806 | Not reported | 12 of 12 |
| 2007 | 8,928,904 | Not reported | 12 of 12 |
| 2008 | 8,763,892 | Not reported | 12 of 12 |
| 2009 | 8,417,494 | Not reported | 12 of 12 |
| 2010 | 7,655,722 | 40.5% | 12 of 12 |
| 2011 | 11,619,693 | 61.4% | 12 of 12 |
| 2012 | 10,445,910 | 55.1% | 12 of 12 |
| 2013 | 8,893,007 | 47.0% | 12 of 12 |
| 2014 | 9,472,764 | 50.1% | 12 of 12 |
| 2015 | 8,679,505 | 45.9% | 12 of 12 |
| 2016 | 9,171,812 | Not reported | 12 of 12 |
| 2017 | 10,506,957 | 55.5% | 12 of 12 |
| 2018 | 9,192,949 | 48.6% | 12 of 12 |
| 2019 | 7,643,804 | 40.4% | 12 of 12 |
| 2020 | 8,459,181 | 44.6% | 12 of 12 |
| 2021 | 7,332,619 | 38.8% | 12 of 12 |
| 2022 | 8,831,544 | 46.7% | 12 of 12 |
| 2023 | 6,793,297 | 35.9% | 12 of 12 |
| 2024 | 6,956,330 | 36.7% | 12 of 12 |
| 2025 | 7,589,037 | 40.1% | 12 of 12 |
| 2026 (provisional, partial year) | 5,053,389 | 46.0% | 7 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 |
|---|---|---|---|
| 2 | Conventional Hydroelectric | 135.0 | September 1968 |
| 4 | Conventional Hydroelectric | 135.0 | December 1968 |
| 5 | Conventional Hydroelectric | 135.0 | February 1969 |
| 6 | Conventional Hydroelectric | 135.0 | March 1969 |
| 7 | Conventional Hydroelectric | 135.0 | April 1969 |
| 9 | Conventional Hydroelectric | 135.0 | August 1969 |
| 11 | Conventional Hydroelectric | 135.0 | March 1970 |
| 12 | Conventional Hydroelectric | 135.0 | May 1970 |
| 13 | Conventional Hydroelectric | 135.0 | December 1970 |
| 15 | Conventional Hydroelectric | 135.0 | October 1971 |
| 16 | Conventional Hydroelectric | 135.0 | December 1971 |
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 John Day
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Questions about John Day
How much power does John Day produce?
John Day reported 7,589,037 MWh (7.59 TWh) of net generation in 2025, a 40.1% capacity factor on 1,485 MW of nameplate capacity. From January to July 2026 it reported 5.05 TWh, which is provisional.
Where is John Day?
John Day is in Sherman County, Oregon, at 45.7164, −120.6941. It is in the Bonneville Power Administration balancing area (BPAT).
Who operates John Day?
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 John Day start operating?
Its first generator began operating in September 1968, 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