Electron
Hydro power plant in Pierce County, Washington. 22.8 MW of nameplate capacity across 4 generators, operated by Electron Hydro LLC.
Also known as Electron Powerhouse · EIA plant 3854
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 22.8 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- April 1904First generator online
- Operator
- Electron Hydro LLCEIA operator ID 59866
- Grid
- PSEIBalancing authority PSEI
- Price nodes
- None linkedNo verified ISO node
- Location
- Pierce County, WA46.9910, −122.1749
- EIA plant ID
- 3854EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Electron produces
Free · EIA-923Net generation, 2025
0 MWh
0 MWh, final
Capacity factor, 2025
0.0%
2024: 0.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
0.0–166.7
GWh a year. Low 2021, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 133,430 | Not reported | 12 of 12 |
| 2001 | 126,112 | Not reported | 12 of 12 |
| 2002 | 117,393 | Not reported | 12 of 12 |
| 2003 | 132,160 | Not reported | 12 of 12 |
| 2004 | 123,132 | Not reported | 12 of 12 |
| 2005 | 96,720 | Not reported | 12 of 12 |
| 2006 | 67,270 | Not reported | 12 of 12 |
| 2007 | 88,729 | Not reported | 12 of 12 |
| 2008 | 96,154 | Not reported | 12 of 12 |
| 2009 | 90,894 | Not reported | 12 of 12 |
| 2010 | 88,025 | 44.1% | 12 of 12 |
| 2011 | 50,340 | 25.2% | 12 of 12 |
| 2012 | 49,582 | 24.8% | 12 of 12 |
| 2013 | 49,652 | 24.9% | 12 of 12 |
| 2014 | 42,364 | 21.2% | 12 of 12 |
| 2015 | 62,832 | 31.5% | 12 of 12 |
| 2016 | 166,693 | 83.2% | 12 of 12 |
| 2017 | 128,745 | 64.5% | 12 of 12 |
| 2018 | 136,215 | 68.2% | 12 of 12 |
| 2019 | 143,608 | 71.9% | 12 of 12 |
| 2020 | 50,957 | 25.4% | 12 of 12 |
| 2021 | 0 | 0.0% | 12 of 12 |
| 2022 | 0 | 0.0% | 12 of 12 |
| 2023 | 0 | 0.0% | 12 of 12 |
| 2024 | 0 | 0.0% | 12 of 12 |
| 2025 | 0 | 0.0% | 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 | 5.1 | April 1904 |
| 2 | Conventional Hydroelectric | 5.1 | April 1904 |
| 3 | Conventional Hydroelectric | 5.1 | April 1904 |
| 4 | Conventional Hydroelectric | 7.5 | April 1929 |
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 Electron Hydro LLC 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 Electron
Questions about Electron
How much power does Electron produce?
Electron reported 0 MWh (0 MWh) of net generation in 2025.
Where is Electron?
Electron is in Pierce County, Washington, at 46.9910, −122.1749. It is in the Puget Sound Energy balancing area (PSEI).
Who operates Electron?
EIA-860M for August 2026 lists Electron Hydro LLC as the operator (EIA operator ID 59866). The operator is not always the owner.
When did Electron start operating?
Its first generator began operating in April 1904, 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