329th largest plant in California · 3143rd nationally
Donnells is a hydroelectric power plant in California with a nameplate capacity of 72.0 MW. It generates roughly 347.7k MWh per year — enough to power about 33,118 average U.S. homes.
Its capacity factor of 55% puts it in the middle range — running steadily but not full-time.
| Plant Name | Donnells |
|---|---|
| Operator | Oakdale&south San Joaquin Irrigation D. |
| City | None |
| County | Tuolumne County |
| State | California |
| ZIP | 95364 |
| Coordinates | 38.24666, -120.03407 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| H1 | Conventional Hydroelectric | Water | 72.0 MW | Operating | 1957 |
| 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.