37th largest plant in Idaho · 4163rd nationally
Oneida is a hydroelectric power plant in Idaho with a nameplate capacity of 30.0 MW. It generates roughly 42.4k MWh per year — enough to power about 4,039 average U.S. homes.
Its capacity factor of 16% reflects intermittent or peaking operation.
| Plant Name | Oneida |
|---|---|
| Operator | Pacificorp |
| City | Riverdale |
| County | Franklin County |
| State | Idaho |
| ZIP | 83263 |
| Coordinates | 42.26777, -111.74853 |
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 | 10.0 MW | Operating | 1915 |
| 2 | Conventional Hydroelectric | Water | 10.0 MW | Operating | 1916 |
| 3 | Conventional Hydroelectric | Water | 10.0 MW | Operating | 1920 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | Pacificorp - East |
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.