10th largest plant in Arizona · 300th nationally
Hoover Dam (Az) is a hydroelectric power plant in Arizona with a nameplate capacity of 1,039 MW. It generates roughly 1.5M MWh per year — enough to power about 139,005 average U.S. homes.
Its capacity factor of 16% reflects intermittent or peaking operation.
| Plant Name | Hoover Dam (Az) |
|---|---|
| Operator | U S Bureau Of Reclamation |
| City | Boulder City |
| County | Mohave County |
| State | Arizona |
| ZIP | 86430 |
| Coordinates | 36.01551, -114.73801 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| A1 | Conventional Hydroelectric | Water | 130 MW | Operating | 1941 |
| A2 | Conventional Hydroelectric | Water | 130 MW | Operating | 1942 |
| A3 | Conventional Hydroelectric | Water | 130 MW | Operating | 1952 |
| A4 | Conventional Hydroelectric | Water | 130 MW | Operating | 1952 |
| A6 | Conventional Hydroelectric | Water | 130 MW | Operating | 1939 |
| A7 | Conventional Hydroelectric | Water | 130 MW | Operating | 1939 |
| A5 | Conventional Hydroelectric | Water | 127 MW | Operating | 1943 |
| A9 | Conventional Hydroelectric | Water | 68.5 MW | Operating | 1952 |
| A8 | Conventional Hydroelectric | Water | 61.5 MW | Operating | 1937 |
| A0 | Conventional Hydroelectric | Water | 2.4 MW | Operating | 1936 |
| 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.