Big Sky Wind LLC
Wind power plant · Bureau County, Illinois
Nameplate capacity
239 MW
Rank in Illinois
#51
of 580 plants
In service since
2011
February 2011
Details
- Primary fuel
- Wind
- Technology
- Onshore Wind Turbine
- Operator
- Big Sky Wind LLC
- County
- Bureau County
- Generating units
- 1
- Share of state capacity
- 0.45%
- Rank among wind plants in Illinois
- #7 of 56
- EIA plant code
- 57135
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Onshore Wind Turbine | 239 MW | 239 MW | 2011 | 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 Illinois
| Maple Flats | Solar | 250 MW |
| Marion | Natural gas | 249 MW |
| FPL Energy Illinois Wind LLC Hybrid | Wind | 238 MW |
| Dallman | Coal | 230 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 239 MW solar plant and a 239 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 Illinois power plants · What Illinois actually generates