Sierra Pacific Aberdeen
Other power plant · Grays Harbor County, Washington
Nameplate capacity
18 MW
Rank in Washington
#88
of 139 plants
In service since
2003
March 2003
Details
- Primary fuel
- Other
- Technology
- Wood/Wood Waste Biomass
- Operator
- Sierra Pacific Industries
- County
- Grays Harbor County
- Generating units
- 1
- Share of state capacity
- 0.06%
- Rank among other plants in Washington
- #6 of 16
- EIA plant code
- 55882
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN1 | Wood/Wood Waste Biomass | 18 MW | 17 MW | 2003 | 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
| Electron | Hydro | 23 MW |
| Adams Nielson Solar | Solar | 19 MW |
| Upriver Dam Hydro Plant | Hydro | 18 MW |
| South Fork Tolt | Hydro | 17 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 18 MW solar plant and a 18 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