75th largest plant in Washington · 3831st nationally
Cushman 1 is a hydroelectric power plant in Washington with a nameplate capacity of 43.2 MW. It generates roughly 115.5k MWh per year — enough to power about 10,999 average U.S. homes.
Its capacity factor of 31% reflects intermittent or peaking operation.
| Plant Name | Cushman 1 |
|---|---|
| Operator | City Of Tacoma - (Wa) |
| City | Shelton |
| County | Mason County |
| State | Washington |
| ZIP | 98584 |
| Coordinates | 47.41810, -123.22520 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 21 | Conventional Hydroelectric | Water | 21.6 MW | Operating | 1926 |
| 22 | Conventional Hydroelectric | Water | 21.6 MW | Operating | 1926 |
| 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.