Groton Generation Station
Natural gas power plant · Brown County, South Dakota
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- Basin Electric Power Coop
- County
- Brown County
- Generating units
- 2
- Share of state capacity
- 2.82%
- Rank among natural gas plants in South Dakota
- #4 of 11
- EIA plant code
- 56238
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GT01 | Natural Gas Fired Combustion Turbine | 108 MW | 85 MW | 2006 | Operating |
| GT02 | Natural Gas Fired Combustion Turbine | 108 MW | 85 MW | 2008 | 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
| Triple H Wind Project | Wind | 250 MW |
| Prevailing Wind Park | Wind | 220 MW |
| Buffalo Ridge II LLC | Wind | 210 MW |
| Crowned Ridge Wind II Energy Center | Wind | 201 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 216 MW solar plant and a 216 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