103rd largest plant in Arizona · 4881st nationally
Headgate Rock is a hydroelectric power plant in Arizona with a nameplate capacity of 19.5 MW. It generates roughly 32.3k MWh per year — enough to power about 3,073 average U.S. homes.
Its capacity factor of 19% reflects intermittent or peaking operation.
| Plant Name | Headgate Rock |
|---|---|
| Operator | Colorado River Indian Irr Proj |
| City | Parker |
| County | La Paz County |
| State | Arizona |
| ZIP | 85344 |
| Coordinates | 34.16826, -114.27736 |
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 | 6.5 MW | Operating | 1993 |
| 2 | Conventional Hydroelectric | Water | 6.5 MW | Operating | 1993 |
| 3 | Conventional Hydroelectric | Water | 6.5 MW | Operating | 1993 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | Western Area Power Administration - Desert Southwest Region |
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.