39th largest plant in Wyoming · 3532nd nationally
Seminoe is a hydroelectric power plant in Wyoming with a nameplate capacity of 51.6 MW. It generates roughly 140.7k MWh per year — enough to power about 13,400 average U.S. homes.
Its capacity factor of 31% reflects intermittent or peaking operation.
| Plant Name | Seminoe |
|---|---|
| Operator | U S Bureau Of Reclamation |
| City | Sinclair |
| County | Carbon County |
| State | Wyoming |
| ZIP | 82334 |
| Coordinates | 42.15613, -106.90848 |
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 | 17.2 MW | Operating | 1939 |
| 2 | Conventional Hydroelectric | Water | 17.2 MW | Operating | 1939 |
| 3 | Conventional Hydroelectric | Water | 17.2 MW | Operating | 1939 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | Western Area Power Administration Ugp 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.