Yankton
Natural gas power plant · Yankton County, South Dakota
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Internal Combustion Engine
- Operator
- NorthWestern Energy - (SD)
- County
- Yankton County
- Generating units
- 4
- Share of state capacity
- 0.17%
- Rank among natural gas plants in South Dakota
- #9 of 11
- EIA plant code
- 8034
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 3 | Natural Gas Internal Combustion Engine | 6.5 MW | 6.5 MW | 1975 | Standby/Backup: available for service but not normally used |
| 2 | Petroleum Liquids | 2.7 MW | 2.8 MW | 1974 | Standby/Backup: available for service but not normally used |
| 1 | Natural Gas Internal Combustion Engine | 2.2 MW | 2.2 MW | 1974 | Standby/Backup: available for service but not normally used |
| 4 | Petroleum Liquids | 2.0 MW | 2.0 MW | 1963 | Standby/Backup: available for service but not normally used |
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
| Brule County Wind | Wind | 20 MW |
| Oak Tree Energy | Wind | 20 MW |
| RE Solar, LLC | Solar | 8.3 MW |
| Ft. Pierre | Other | 6.0 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 13 MW solar plant and a 13 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