Watertown Power Plant
Other power plant · Codington County, South Dakota
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- Missouri Basin Muni Power Agny
- County
- Codington County
- Generating units
- 1
- Share of state capacity
- 0.88%
- Rank among other plants in South Dakota
- #2 of 9
- EIA plant code
- 7247
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Petroleum Liquids | 68 MW | 45 MW | 1978 | 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
| Fall River Solar, LLC | Solar | 80 MW |
| Bob Glanzer Generating Station | Natural gas | 69 MW |
| Wessington Springs | Wind | 51 MW |
| Buffalo Ridge I LLC | Wind | 50 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 68 MW solar plant and a 68 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