847th largest plant in California · 6020th nationally
Mcswain is a hydroelectric power plant in California with a nameplate capacity of 9.0 MW. It generates roughly 44.0k MWh per year — enough to power about 4,193 average U.S. homes.
Its capacity factor of 56% puts it in the middle range — running steadily but not full-time.
| Plant Name | Mcswain |
|---|---|
| Operator | Merced Irrigation District |
| City | Snelling |
| County | Mariposa County |
| State | California |
| ZIP | 95369 |
| Coordinates | 37.52206, -120.31009 |
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 | 9.0 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.