Fort Randall
Hydro power plant · Charles Mix County, South Dakota
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- USACE-Omaha
- County
- Charles Mix County
- Generating units
- 8
- Share of state capacity
- 4.17%
- Rank among hydro plants in South Dakota
- #3 of 4
- EIA plant code
- 3373
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 40 MW | 45 MW | 1954 | Operating |
| 2 | Conventional Hydroelectric | 40 MW | 45 MW | 1954 | Operating |
| 3 | Conventional Hydroelectric | 40 MW | 45 MW | 1954 | Operating |
| 4 | Conventional Hydroelectric | 40 MW | 45 MW | 1954 | Operating |
| 5 | Conventional Hydroelectric | 40 MW | 45 MW | 1955 | Operating |
| 6 | Conventional Hydroelectric | 40 MW | 45 MW | 1955 | Out of service but expected to return to service in next calendar year |
| 7 | Conventional Hydroelectric | 40 MW | 45 MW | 1955 | Operating |
| 8 | Conventional Hydroelectric | 40 MW | 45 MW | 1956 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in South Dakota
| Astoria Station | Natural gas | 349 MW |
| Deer Creek Station | Natural gas | 324 MW |
| Dakota Range Wind | Wind | 304 MW |
| Deuel Harvest Wind Energy LLC | Wind | 300 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 320 MW solar plant and a 320 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All South Dakota power plants · What South Dakota actually generates