575th largest plant in California · 4363rd nationally
Oneill is a hydroelectric power plant in California with a nameplate capacity of 25.2 MW.
| Plant Name | Oneill |
|---|---|
| Operator | U S Bureau Of Reclamation |
| City | Los Banos |
| County | Merced County |
| State | California |
| ZIP | 95376 |
| Coordinates | 37.09867, -121.04772 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Hydroelectric Pumped Storage | Water | 4.2 MW | Operating | 1968 |
| 2 | Hydroelectric Pumped Storage | Water | 4.2 MW | Operating | 1968 |
| 3 | Hydroelectric Pumped Storage | Water | 4.2 MW | Operating | 1967 |
| 4 | Hydroelectric Pumped Storage | Water | 4.2 MW | Operating | 1967 |
| 5 | Hydroelectric Pumped Storage | Water | 4.2 MW | Operating | 1968 |
| 6 | Hydroelectric Pumped Storage | Water | 4.2 MW | Operating | 1967 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | California Independent System Operator |
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.