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30 MW Hydro operating in King, WA — Seattle City Light
30 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1921
Operating Since
Coordinates
47.4196, -121.7820
County
King, WA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of Seattle - (WA) | — | — |
| Owner(s) | City of Seattle - (WA) | — | — |
| Status | Operating | — | — |
The Cedar Falls hydroelectric plant is located in King County, Washington. It has a total capacity of 30 MW across two generators and is operated by the City of Seattle. The plant began operating in 1921, utilizing conventional hydroelectric technology and water as its primary fuel source. It is ranked as the 37th largest power plant in Washington out of 75, and 408th nationally out of 1464.
In the most recent year with available data, Cedar Falls generated 6,794 MWh of electricity. This corresponds to a capacity factor of 2.5%. The plant operates within the Seattle City Light balancing authority and is part of the Western Electricity Coordinating Council (WECC) NERC region.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
6.8K MWh
Latest Month
6.8K MWh
Annual Generation
2.5%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $68.8M
Market Position
LMP Node
CEDARFLS_1_GEN5GNODE
Pricing Hub
—
Last updated 2026-03-26
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Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
Sector
Electric Utility