3rd largest plant in Montana · 755th nationally
Noxon Rapids is a hydroelectric power plant in Montana with a nameplate capacity of 488 MW. It generates roughly 1.3M MWh per year — enough to power about 124,220 average U.S. homes.
Its capacity factor of 31% reflects intermittent or peaking operation.
| Plant Name | Noxon Rapids |
|---|---|
| Operator | Avista Corp |
| City | Noxon |
| County | Sanders County |
| State | Montana |
| ZIP | 59853 |
| Coordinates | 47.96048, -115.73361 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 5 | Conventional Hydroelectric | Water | 114 MW | Operating | 1977 |
| 1 | Conventional Hydroelectric | Water | 99.0 MW | Operating | 1959 |
| 3 | Conventional Hydroelectric | Water | 99.0 MW | Operating | 1959 |
| 4 | Conventional Hydroelectric | Water | 99.0 MW | Operating | 1960 |
| 2 | Conventional Hydroelectric | Water | 76.8 MW | Operating | 1959 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | Avista Corporation |
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.