132nd largest plant in Washington · 11440th nationally
Cowiche is a hydroelectric power plant in Washington with a nameplate capacity of 1.7 MW. It generates roughly 3.0k MWh per year — enough to power about 283 average U.S. homes.
Its capacity factor of 20% reflects intermittent or peaking operation.
| Plant Name | Cowiche |
|---|---|
| Operator | Yakima-Tieton Irrigation Dist |
| City | Tieton |
| County | Yakima County |
| State | Washington |
| ZIP | 98947 |
| Coordinates | 46.69263, -120.73719 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 983 | Conventional Hydroelectric | Water | 1.7 MW | Out of Service | 1987 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | Pacificorp - West |
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.