66th largest plant in Washington · 3282nd nationally
Lagrande is a hydroelectric power plant in Washington with a nameplate capacity of 64.0 MW. It generates roughly 277.1k MWh per year — enough to power about 26,394 average U.S. homes.
Its capacity factor of 49% puts it in the middle range — running steadily but not full-time.
| Plant Name | Lagrande |
|---|---|
| Operator | City Of Tacoma - (Wa) |
| City | La Grande |
| County | Pierce County |
| State | Washington |
| ZIP | 98348 |
| Coordinates | 46.83280, -122.31960 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 5 | Conventional Hydroelectric | Water | 40.0 MW | Operating | 1945 |
| 1 | Conventional Hydroelectric | Water | 6.0 MW | Operating | 1912 |
| 2 | Conventional Hydroelectric | Water | 6.0 MW | Operating | 1912 |
| 3 | Conventional Hydroelectric | Water | 6.0 MW | Operating | 1912 |
| 4 | Conventional Hydroelectric | Water | 6.0 MW | Operating | 1912 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | City Of Tacoma, Department Of Public Utilities, Light Division |
Hydroelectric plants spin turbines using falling or flowing water — typically from a dam-impounded reservoir. They are dispatchable, long-lived, and emission-free at the point of generation, though large reservoirs can disrupt rivers and ecosystems and methane can be released from flooded vegetation.