59th largest plant in Washington · 2692nd nationally
Box Canyon is a hydroelectric power plant in Washington with a nameplate capacity of 90.0 MW. It generates roughly 383.5k MWh per year — enough to power about 36,524 average U.S. homes.
Its capacity factor of 49% puts it in the middle range — running steadily but not full-time.
| Plant Name | Box Canyon |
|---|---|
| Operator | Pud No 1 Of Pend Oreille County |
| City | Ione |
| County | Pend Oreille County |
| State | Washington |
| ZIP | 99139 |
| Coordinates | 48.78086, -117.41834 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | Water | 22.5 MW | Operating | 1955 |
| 2 | Conventional Hydroelectric | Water | 22.5 MW | Operating | 1955 |
| 3 | Conventional Hydroelectric | Water | 22.5 MW | Operating | 1955 |
| 4 | Conventional Hydroelectric | Water | 22.5 MW | Operating | 1955 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | Avista Corporation |
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.