United States › Power plants › Hydroelectric plants › Washington
HYDROELECTRIC PLANTSMossyrock
Mossyrock is a 300 MW operating hydroelectric plant in Lewis County, Washington, operated by City of Tacoma - (WA).
Generators
Each generating unit EIA lists at this plant.
| Unit | Technology | Capacity | Status |
|---|---|---|---|
| 51 | Conventional Hydroelectric | 150 MW | |
| 52 | Conventional Hydroelectric | 150 MW |
Plant details
- Operator
- City of Tacoma - (WA)
- Location
- Lewis County, Washington
- Balancing authority
- TPWR
- Sector
- Electric Utility
- Capacity
- Operating: 300 MW
- First unit online
- Oct 1968
- EIA plant ID
- 3918
Location
46.5347, -122.4247
Nearby power plants
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- AlderHydroelectric plants · 51.0 MW · 19.2 mi
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- LRI LFGTE FacilityBioenergy plants · 4.5 MW · 31.1 mi
Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem