Day County Wind LLC
Wind power plant · Day County, South Dakota
Nameplate capacity
99 MW
Rank in South Dakota
#27
of 54 plants
In service since
2010
April 2010
Details
- Primary fuel
- Wind
- Technology
- Onshore Wind Turbine
- Operator
- Day County Wind LLC
- County
- Day County
- Generating units
- 1
- Share of state capacity
- 1.29%
- Rank among wind plants in South Dakota
- #15 of 25
- EIA plant code
- 57194
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GE15 | Onshore Wind Turbine | 99 MW | 99 MW | 2010 | 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
| Ben French | Natural gas | 110 MW |
| Willow Creek Wind Power LLC | Wind | 105 MW |
| Coyote Ridge | Wind | 97 MW |
| Campbell County Wind Farm | Wind | 94 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 99 MW solar plant and a 99 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