426th largest plant in California · 3690th nationally
Drum 1 is a hydroelectric power plant in California with a nameplate capacity of 49.2 MW. It generates roughly 88.2k MWh per year — enough to power about 8,399 average U.S. homes.
Its capacity factor of 20% reflects intermittent or peaking operation.
| Plant Name | Drum 1 |
|---|---|
| Operator | Pacific Gas & Electric Co. |
| City | Alta |
| County | Placer County |
| State | California |
| ZIP | 95701 |
| Coordinates | 39.25687, -120.76744 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 4 | Conventional Hydroelectric | Water | 13.2 MW | Operating | 1928 |
| 1 | Conventional Hydroelectric | Water | 12.0 MW | Operating | 1913 |
| 2 | Conventional Hydroelectric | Water | 12.0 MW | Operating | 1913 |
| 3 | Conventional Hydroelectric | Water | 12.0 MW | Operating | 1922 |
| 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.