Aberdeen CT
Natural gas power plant · Brown County, South Dakota
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- NorthWestern Energy - (SD)
- County
- Brown County
- Generating units
- 2
- Share of state capacity
- 1.45%
- Rank among natural gas plants in South Dakota
- #5 of 11
- EIA plant code
- 3338
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 2 | Natural Gas Fired Combustion Turbine | 82 MW | 52 MW | 2013 | Operating |
| GT1 | Petroleum Liquids | 29 MW | 21 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
| Spirit Mound | Other | 135 MW |
| Wild Springs | Solar | 128 MW |
| Ben French | Natural gas | 110 MW |
| Willow Creek Wind Power LLC | Wind | 105 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 111 MW solar plant and a 111 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