Lake Preston
Other power plant · Kingsbury County, South Dakota
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- Otter Tail Power Co
- County
- Kingsbury County
- Generating units
- 1
- Share of state capacity
- 0.31%
- Rank among other plants in South Dakota
- #3 of 9
- EIA plant code
- 3352
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1A | Petroleum Liquids | 24 MW | 19 MW | 1978 | 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
| Lange Generating Station | Natural gas | 40 MW |
| Rolling Thunder Wind Farm Hybrid | Wind | 26 MW |
| Aurora County Wind | Wind | 20 MW |
| Brule County Wind | Wind | 20 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 24 MW solar plant and a 24 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