Darrington
Other power plant · Snohomish County, Washington
Nameplate capacity
4.5 MW
Rank in Washington
#115
of 139 plants
In service since
2007
February 2007
Details
- Primary fuel
- Other
- Technology
- Wood/Wood Waste Biomass
- Operator
- Hampton Lumber Mills - Washington Inc
- County
- Snohomish County
- Generating units
- 1
- Share of state capacity
- 0.01%
- Rank among other plants in Washington
- #12 of 16
- EIA plant code
- 57969
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN1 | Wood/Wood Waste Biomass | 4.5 MW | 4.5 MW | 2007 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Washington
| Urtica Solar Project | Solar | 5.0 MW |
| West Point Treatment Plant | Other | 4.6 MW |
| LRI LFGTE Facility | Other | 4.5 MW |
| Swauk Wind LLC | Wind | 4.3 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 4.5 MW solar plant and a 4.5 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Washington power plants · What Washington actually generates