H M Jackson
Hydro power plant in Snohomish County, Washington. 111.8 MW of nameplate capacity across 4 generators, operated by PUD No 1 of Snohomish County - (WA).
Also known as Henry M. Jackson Hydroelectric Project · H.M. Jackson · HM Jackson · EIA plant 7588
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 111.8 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- June 1984First generator online
- Operator
- PUD No 1 of Snohomish County - (WA)EIA operator ID 17470
- Grid
- BPATBalancing authority BPAT
- Price nodes
- None linkedNo verified ISO node
- Location
- Snohomish County, WA47.9084, −121.8144
- EIA plant ID
- 7588EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power H M Jackson produces
Free · EIA-923Net generation, 2025
334 GWh
333,608 MWh, final
Capacity factor, 2025
34.1%
2024: 37.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
298.0–486.4
GWh a year. Low 2023, high 2020
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | 452,695 | Not reported | 12 of 12 |
| 2003 | 407,846 | Not reported | 12 of 12 |
| 2004 | 409,514 | Not reported | 12 of 12 |
| 2005 | 303,260 | Not reported | 12 of 12 |
| 2006 | 417,309 | Not reported | 12 of 12 |
| 2007 | 431,305 | Not reported | 12 of 12 |
| 2008 | 457,493 | Not reported | 12 of 12 |
| 2009 | 394,246 | Not reported | 12 of 12 |
| 2010 | 382,612 | 39.1% | 12 of 12 |
| 2011 | 485,783 | 49.6% | 12 of 12 |
| 2012 | 520,255 | 53.0% | 12 of 12 |
| 2013 | 452,063 | 46.2% | 12 of 12 |
| 2014 | 514,336 | 52.5% | 12 of 12 |
| 2015 | 371,622 | 37.9% | 12 of 12 |
| 2016 | 483,805 | 49.3% | 12 of 12 |
| 2017 | 453,152 | 46.3% | 12 of 12 |
| 2018 | 459,517 | 46.9% | 12 of 12 |
| 2019 | 306,344 | 31.3% | 12 of 12 |
| 2020 | 486,416 | 49.5% | 12 of 12 |
| 2021 | 443,226 | 45.3% | 12 of 12 |
| 2022 | 408,927 | 41.8% | 12 of 12 |
| 2023 | 297,983 | 30.4% | 12 of 12 |
| 2024 | 365,712 | 37.2% | 12 of 12 |
| 2025 | 333,608 | 34.1% | 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 | 47.5 | June 1984 |
| 2 | Conventional Hydroelectric | 47.5 | June 1984 |
| 3 | Conventional Hydroelectric | 8.4 | June 1984 |
| 4 | Conventional Hydroelectric | 8.4 | June 1984 |
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 PUD No 1 of Snohomish County - (WA) 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 H M Jackson
More plants operated by PUD No 1 of Snohomish County - (WA)
Questions about H M Jackson
How much power does H M Jackson produce?
H M Jackson reported 333,608 MWh (334 GWh) of net generation in 2025, a 34.1% capacity factor on 111.8 MW of nameplate capacity.
Where is H M Jackson?
H M Jackson is in Snohomish County, Washington, at 47.9084, −121.8144. It is in the Bonneville Power Administration balancing area (BPAT).
Who operates H M Jackson?
EIA-860M for August 2026 lists PUD No 1 of Snohomish County - (WA) as the operator (EIA operator ID 17470). The operator is not always the owner.
When did H M Jackson start operating?
Its first generator began operating in June 1984, 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