United States › Power plants › Hydroelectric plants › Washington
HYDROELECTRIC PLANTSMayfield
Mayfield is a 162 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 |
|---|---|---|---|
| 41 | Conventional Hydroelectric | 41 MW | |
| 42 | Conventional Hydroelectric | 41 MW | |
| 43 | Conventional Hydroelectric | 41 MW | |
| 44 | Conventional Hydroelectric | 41 MW |
Plant details
- Operator
- City of Tacoma - (WA)
- Location
- Lewis County, Washington
- Balancing authority
- TPWR
- Sector
- Electric Utility
- Capacity
- Operating: 162 MW
- First unit online
- Mar 1963
- EIA plant ID
- 3917
Location
46.5035, -122.5885
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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