13th largest plant in Montana · 1688th nationally
Fort Peck is a hydroelectric power plant in Montana with a nameplate capacity of 180 MW. It generates roughly 701.2k MWh per year — enough to power about 66,779 average U.S. homes.
Its capacity factor of 45% puts it in the middle range — running steadily but not full-time.
| Plant Name | Fort Peck |
|---|---|
| Operator | Usace-Omaha |
| City | Fort Peck |
| County | Mccone County |
| State | Montana |
| ZIP | 59223 |
| Coordinates | 48.01220, -106.41230 |
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | Water | 41.2 MW | Operating | 1943 |
| 3 | Conventional Hydroelectric | Water | 41.2 MW | Operating | 1951 |
| 4 | Conventional Hydroelectric | Water | 40.0 MW | Operating | 1961 |
| 5 | Conventional Hydroelectric | Water | 40.0 MW | Operating | 1961 |
| 2 | Conventional Hydroelectric | Water | 17.3 MW | Out of Service | 1948 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | Western Area Power Administration Ugp West |
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.