46th largest plant in Tennessee · 4080th nationally
Great Falls (Tn) is a hydroelectric power plant in Tennessee with a nameplate capacity of 33.7 MW. It generates roughly 32.2k MWh per year — enough to power about 3,064 average U.S. homes.
Its capacity factor of 11% reflects intermittent or peaking operation.
| Plant Name | Great Falls (Tn) |
|---|---|
| Operator | Tennessee Valley Authority |
| City | Rock Island |
| County | Warren County |
| State | Tennessee |
| ZIP | 38581 |
| Coordinates | 35.80673, -85.63406 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 2 | Conventional Hydroelectric | Water | 18.4 MW | Operating | 1924 |
| 1 | Conventional Hydroelectric | Water | 15.3 MW | Operating | 1916 |
| NERC Region | SERC |
|---|---|
| Balancing Authority | Tennessee Valley Authority |
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.