Electron
Electron is a 23 MW hydroelectric power plant in Pierce County, Washington, operated by Electron Hydro LLC. EIA-860M lists 4 generating units here. Its units entered service between 1904 and 1929.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 22.8 MW
- 25.8 MW net summer
- Generating units
- 4
- In service
- 1904–1929
- EIA plant ID
- 3854
Where it is
Loading map…
- County
- Pierce County, Washington
- Coordinates
- 46.991, -122.1749
- Balancing authority
- PSEI
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Electron Hydro LLC
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating
Electron: FAQ
- Where is Electron?
- In Pierce County, Washington (WA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Electron?
- 23 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
- Who owns Electron?
- EIA-860M names Electron Hydro LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Electron LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Electron Hydro LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Electron LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Electron still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.