Cedar Hills
Cedar Hills is a 5 MW biomass power plant in King County, Washington, operated by King County Solid Waste Division. EIA-860M lists 18 generating units here. Its units entered service in 2009.
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
- 5.4 MW
- 5.4 MW net summer
- Generating units
- 18
- In service
- 2009
- EIA plant ID
- 57298
Where it is
Loading map…
- County
- King County, Washington
- Coordinates
- 47.4558, -122.0428
- Balancing authority
- PSEI
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- King County Solid Waste Division
- Primary energy source
- Biomass
- Technologies
- Landfill Gas
- Status
- Operating
Every plant King County Solid Waste Division reports to EIA →
Cedar Hills: FAQ
- Where is Cedar Hills?
- In King 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 Cedar Hills?
- 5 MW of nameplate capacity across 18 units, as of the EIA-860M release for 2026-07.
- Who owns Cedar Hills?
- EIA-860M names King County Solid Waste Division 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 Cedar Hills LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — King County Solid Waste Division 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 "Cedar Hills LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Cedar Hills still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.