EXELON SOLAR CHICAGO
OperatingSolar power plant
- Capacity
- 9 MW
- Primary fuel
- Solar
- County
- Cook County
- Operator
- EXELON POWER
- Status
- Operating
- Commissioned
- 2009
- EIA plant ID
- 57191
- Coordinates
- 41.6758, -87.6514
EXELON SOLAR CHICAGO, a 9 MW Solar power plant in Cook County, Illinois. Operated by EXELON POWER, commissioned 2009.
Weather peril exposure
EXELON SOLAR CHICAGO is a 9 MW solar power plant in Cook County, IL, operated by EXELON POWER, commissioned in 2009. Cook County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.8 of 5 at the 21st national percentile. Riverine flooding is the leading peril, rated Very High by FEMA at the 75th percentile.
Cook County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Share of modeled loss | Events per year |
|---|---|---|---|---|---|
| Riverine flooding | Very High | 75th | 4.0 of 5 | 16% | 5.9 |
| Heat wave | Very High | 65th | 3.6 of 5 | <1% | 2.9 |
| Earthquake | Relatively High | 61st | 3.4 of 5 | 1% | <0.01 |
| Tornado | Very High | 59th | 3.4 of 5 | 20% | 1.0 |
| Winter weather | Very High | 40th | 2.6 of 5 | <1% | 14.6 |
| Hail | Relatively High | 35th | 2.4 of 5 | 62% | 4.0 |
| Wildfire | Very Low | 31st | 2.3 of 5 | <1% | <0.01 |
| Ice storm | Very High | 27th | 2.1 of 5 | <1% | 0.58 |
| Lightning | Very High | 6th | 1.2 of 5 | <1% | 41.5 |
| Strong wind | Very High | 5th | 1.2 of 5 | <1% | 5.7 |
| Coastal flooding | Relatively Low | 4th | 1.2 of 5 | <1% | 0.01 |
| Hurricane | Very Low | 1st | 1.0 of 5 | <1% | <0.01 |
Hail exposure and deductible structure
Hail scores 2.4 of 5, which sits in the 1% to 2% percentage deductible range carriers are quoting for that exposure. Named windstorm and severe convective wind score 3.4 of 5, indicating a 1% to 2% wind deductible. Ranges, not single figures. The final structure is set by the carrier.
Percentage hail deductible range: 1% to 2% of insured value. Wind deductible range: 1% to 2%. These are the structures commonly seen at this exposure, not an offer and not a rate.
Modeled annual loss for a 9 MW solar array
At an assumed replacement value of $0.90 per watt, or $8.1M insured, the modeled expected annual loss for a fixed tilt ground mount array in Cook County is $2,819 a year, $313 per MW, 0.03% of insured value.
Heat is modeled as a production risk rather than a property loss: 1.9% of annual yield in this county.
Insurability signal: Standard. Hail carries 62% of modeled loss.
Model hail, wind and flood exposure for Cook 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, and the modeled loss applies the Bywatts solar vulnerability layer. 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. The solar vulnerability layer that turns FEMA building loss into modeled solar loss was derived by Bywatts and revised on physical reasoning. It has not been reviewed by a practising underwriter.