United States › Power plants › Hydroelectric plants › Washington
HYDROELECTRIC PLANTSBoundary
Boundary is a 1,160 MW operating hydroelectric plant in Pend Oreille County, Washington, operated by City of Seattle - (WA).
Generators
Each generating unit EIA lists at this plant.
| Unit | Technology | Capacity | Status |
|---|---|---|---|
| 55 | Conventional Hydroelectric | 239 MW | |
| 56 | Conventional Hydroelectric | 239 MW | |
| 51 | Conventional Hydroelectric | 181 MW | |
| 54 | Conventional Hydroelectric | 181 MW | |
| 52 | Conventional Hydroelectric | 162 MW | |
| 53 | Conventional Hydroelectric | 158 MW |
Plant details
- Operator
- City of Seattle - (WA)
- Location
- Pend Oreille County, Washington
- Balancing authority
- SCL
- Sector
- Electric Utility
- Capacity
- Operating: 1,160 MW
- First unit online
- Aug 1967
- EIA plant ID
- 6433
Location
48.9871, -117.3478
Nearby power plants
- Box CanyonHydroelectric plants · 90.0 MW · 14.6 mi
- Sheep Creek HydroHydroelectric plants · 1.6 MW · 20.5 mi
- Smith Falls Hydro ProjectHydroelectric plants · 38.1 MW · 35.9 mi
- Meyers FallsHydroelectric plants · 1.8 MW · 42.2 mi
- Kettle Falls Generating StationBioenergy plants, Gas power plants · 57.9 MW · 43.0 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