133rd largest plant in Washington · 11524th nationally
Rocky Brook Hydroelectric is a hydroelectric power plant in Washington with a nameplate capacity of 1.6 MW. It generates roughly 219 MWh per year — enough to power about 20 average U.S. homes.
Its capacity factor of 2% reflects intermittent or peaking operation.
| Plant Name | Rocky Brook Hydroelectric |
|---|---|
| Operator | Rocky Brook Electric Inc |
| City | Brinnon |
| County | Jefferson County |
| State | Washington |
| ZIP | 98320 |
| Coordinates | 47.71970, -122.94310 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| GEN1 | Conventional Hydroelectric | Water | 1.6 MW | Standby | 1985 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | Bonneville Power Administration |
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.