GSG LLC
OperatingWind power plant
- Capacity
- 80 MW
- Primary fuel
- Wind
- County
- Lee County
- Operator
- INFIGEN ASSET MANAGEMENT LLC
- Status
- Operating
- Commissioned
- 2007
- EIA plant ID
- 56450
- Generators
- 1
- Technology
- Onshore Wind Turbine
- Net generation (2024)
- 299 GWh
- Capacity factor (2024, EIA nameplate)
- 43%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 41.6718, -89.1248
GSG LLC, an 80 MW Wind power plant in Lee County, Illinois. Operated by INFIGEN ASSET MANAGEMENT LLC, commissioned 2007.
How GSG LLC compares
With 80 MW of capacity, GSG LLC ranks 63rd among the 158 operating power plants Bywatts maps in Illinois and 20th of the 27 operating Wind plants in the state. It accounts for about 2.3% of Illinois's operating Wind capacity and 0.2% of all operating capacity in the state. Nationally it is the 302nd-largest of the 708 operating Wind plants in the database. Commissioned in 2007, it is newer than 77% of the 150 operating Illinois plants with a recorded commissioning year. Its operator, INFIGEN ASSET MANAGEMENT LLC, runs 3 operating plants in Illinois totaling 183 MW. It shares Lee County with 4 other operating plants, including LEE ENERGY FACILITY and SHADY OAKS WIND FARM.
EIA-860 lists 1 generator at the site with 80 MW of nameplate capacity, all onshore wind turbine technology. Net generation was 299 GWh in 2024 (a 43% capacity factor), up 34% from 2022.
Grid neighborhood
The nearest named substation is EASY ROAD (345 kV), about 18.1 miles away; the closest transmission line found within 10 miles is a 138 kV line, about 3.4 miles away. Another 10 operating power plants totaling 1,499 MW sit within 25 miles; the largest is LEE ENERGY FACILITY (814 MW, Natural Gas).
Computed by Bywatts from HIFLD power plant, substation and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
GSG LLC is an 80 MW wind power plant in Lee County, IL, operated by INFIGEN ASSET MANAGEMENT LLC, commissioned in 2007. Lee County carries high modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.8 of 5 at the 69th national percentile. Strong wind is the leading peril, rated Relatively High by FEMA at the 90th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a wind plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Lee County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Strong wind | Relatively High | 90th | 4.6 of 5 | 6.1 |
| Hail | Relatively Low | 74th | 3.9 of 5 | 4.1 |
| Tornado | Relatively Moderate | 73rd | 3.9 of 5 | 0.67 |
| Riverine flooding | Relatively Low | 65th | 3.6 of 5 | 0.93 |
| Earthquake | Very Low | 46th | 2.9 of 5 | <0.01 |
| Lightning | Relatively Low | 37th | 2.5 of 5 | 42.0 |
| Ice storm | Relatively Low | 36th | 2.4 of 5 | 0.56 |
| Heat wave | Very Low | 21st | 1.8 of 5 | 3.7 |
| Wildfire | Very Low | 12th | 1.5 of 5 | <0.01 |
| Winter weather | Relatively Low | 9th | 1.4 of 5 | 14.4 |
| Hurricane | Very Low | 5th | 1.2 of 5 | <0.01 |
Perils not assessed in Lee County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Lee County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.