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22.8 MW Hydro operating in Pierce, WA — Puget Sound Energy
22.8 MW
Nameplate Capacity
4
Generators
units
Conventional Hydroelectric
Technology
1904
Operating Since
Coordinates
46.9910, -122.1749
County
Pierce, WA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Electron Hydro LLC | — | — |
| Owner(s) | Electron Hydro LLC | — | — |
| Status | Operating | — | — |
The Electron Hydroelectric Project, originally known as the Puyallup Project, is a hydroelectric power plant operated by Electron Hydro LLC on the Puyallup River in Pierce County, Washington. It generates 26.2 megawatts (35,100 hp) of electricity and is operated and maintained by approximately 20 full-time employees.
Read more on WikipediaThe Electron Hydroelectric Project, located in Pierce County, Washington, is a 22.8 MW conventional hydroelectric facility. It began operating in 1904 and consists of 4 generators. The primary fuel source is water (WAT). Electron Hydro LLC is the owner and operator.
The plant operates within the Puget Sound Energy balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. It is ranked as the 41st largest power plant in Washington out of 75, and 461st nationally out of 1464.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
0 MWh
Latest Month
0 MWh
Annual Generation
0.0%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $52.3M
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-14
View all articlesNo ask pi reports yet for this entity.
ask pi about ElectronPuget Sound Energy (PSEI)
Grid Voltage
115.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP