Search
Search plants, projects, owners, and states
Search plants, projects, owners, and states
12.8 MW Hydro operating in King, WA — Puget Sound Energy
12.8 MW
Nameplate Capacity
5
Generators
units
Conventional Hydroelectric
Technology
1898
Operating Since
Coordinates
47.5401, -121.8370
County
King, WA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Puget Sound Energy Inc | Puget Sound Energy | — |
| Owner(s) | Puget Sound Energy Inc | PUGET HOLDINGS | — |
| Status | Operating | — | — |
The Snoqualmie hydroelectric plant, located in King County, Washington, has a total capacity of 12.8 MW across 5 generators. The plant began operating in 1898 and is owned by Puget Holdings and operated by Puget Sound Energy Inc. The primary fuel source is water (WAT), and the plant utilizes conventional hydroelectric technology. Snoqualmie ranks as the 47th largest power plant in Washington out of 75, and 595th nationally out of 1464 plants.
In the most recent year with available data, the plant generated 65,857 MWh, achieving a capacity factor of 58.5%. The plant operates within the Western Electricity Coordinating Council (WECC) NERC region, and its balancing authority is Puget Sound Energy. Financial data indicates an installed cost of $6,280.35 per kW.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
6.9K MWh
Latest Month
65.9K MWh
Annual Generation
58.5%
Capacity Factor
Run-of-river hydro · Puget Sound Energy, Inc. · Data from 2015–2024
$6,316/kW
Installed Cost
$18.7/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-26
View all articlesNo ask pi reports yet for this entity.
ask pi about SnoqualmiePuget Sound Energy (PSEI)
Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility