Snoqualmie
Hydro power plant in King County, Washington. 12.8 MW of nameplate capacity across 5 generators, operated by Puget Sound Energy Inc.
Also known as Snoqualmie Falls Power Plant #1 · EIA plant 3860
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 12.8 MWNameplate
- Generators
- 5 operatingEIA-860M, August 2026
- Operating since
- January 1898First generator online
- Operator
- Puget Sound Energy IncEIA operator ID 15500
- Grid
- PSEIBalancing authority PSEI
- Price nodes
- None linkedNo verified ISO node
- Location
- King County, WA47.5401, −121.8370
- EIA plant ID
- 3860EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Snoqualmie produces
Free · EIA-923Net generation, 2025
59.2 GWh
59,158 MWh, final
Capacity factor, 2025
52.8%
2024: 58.6%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
17.8–68.3
GWh a year. Low 2015, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 236,871 | Not reported | 12 of 12 |
| 2001 | 241,554 | Not reported | 12 of 12 |
| 2002 | 203,650 | Not reported | 12 of 12 |
| 2003 | 117,144 | Not reported | 12 of 12 |
| 2004 | 67,907 | Not reported | 12 of 12 |
| 2005 | 51,531 | Not reported | 12 of 12 |
| 2006 | 47,557 | Not reported | 12 of 12 |
| 2007 | 52,146 | Not reported | 12 of 12 |
| 2008 | 59,492 | Not reported | 12 of 12 |
| 2009 | 62,769 | Not reported | 12 of 12 |
| 2010 | 13,051 | 12.5% | 12 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | 588 | Not reported | 5 of 12 |
| 2014 | 28,503 | 24.8% | 12 of 12 |
| 2015 | 17,849 | 15.6% | 12 of 12 |
| 2016 | 53,051 | 46.1% | 12 of 12 |
| 2017 | 60,899 | Not reported | 12 of 12 |
| 2018 | 68,320 | 60.9% | 12 of 12 |
| 2019 | 48,585 | 43.3% | 12 of 12 |
| 2020 | 52,935 | 47.1% | 12 of 12 |
| 2021 | 32,622 | 29.1% | 12 of 12 |
| 2022 | 48,841 | 43.6% | 12 of 12 |
| 2023 | 61,874 | 55.2% | 12 of 12 |
| 2024 | 65,857 | 58.6% | 12 of 12 |
| 2025 | 59,158 | 52.8% | 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 | 1.5 | January 1898 |
| 2 | Conventional Hydroelectric | 1.5 | January 1898 |
| 3 | Conventional Hydroelectric | 1.5 | January 1898 |
| 4 | Conventional Hydroelectric | 1.5 | January 1898 |
| 5A | Conventional Hydroelectric | 6.8 | August 2013 |
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 Puget Sound Energy Inc as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
300 analyst questions a month, plus MCP
Query Snoqualmie and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Snoqualmie
More plants operated by Puget Sound Energy Inc
Questions about Snoqualmie
How much power does Snoqualmie produce?
Snoqualmie reported 59,158 MWh (59.2 GWh) of net generation in 2025, a 52.8% capacity factor on 12.8 MW of nameplate capacity.
Where is Snoqualmie?
Snoqualmie is in King County, Washington, at 47.5401, −121.8370. It is in the Puget Sound Energy balancing area (PSEI).
Who operates Snoqualmie?
EIA-860M for August 2026 lists Puget Sound Energy Inc as the operator (EIA operator ID 15500). The operator is not always the owner.
When did Snoqualmie start operating?
Its first generator began operating in January 1898, 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