HAVANA
OperatingCoal power plant
- Capacity
- 488 MW
- Primary fuel
- Coal
- County
- Mason County
- Operator
- DYNEGY MIDWEST GENERATION INC
- Status
- Operating
- EIA plant ID
- 891
- Coordinates
- 40.2805, -90.0796
HAVANA, a 488 MW Coal power plant in Mason County, Illinois. Operated by DYNEGY MIDWEST GENERATION INC.
Weather peril exposure
HAVANA is a 488 MW coal power plant in Mason County, IL, operated by DYNEGY MIDWEST GENERATION INC. Mason County carries high modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.9 of 5 at the 73rd national percentile. Strong wind is the leading peril, rated Relatively Moderate by FEMA at the 85th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a coal plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Mason County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Strong wind | Relatively Moderate | 85th | 4.4 of 5 | 5.1 |
| Tornado | Relatively Low | 85th | 4.4 of 5 | 0.59 |
| Earthquake | Relatively Low | 78th | 4.1 of 5 | <0.01 |
| Hail | Relatively Low | 77th | 4.1 of 5 | 3.6 |
| Riverine flooding | Relatively Low | 75th | 4.0 of 5 | 0.93 |
| Ice storm | Relatively Low | 61st | 3.4 of 5 | 1.8 |
| Lightning | Very Low | 56th | 3.2 of 5 | 47.4 |
| Heat wave | Relatively Low | 46th | 2.8 of 5 | 7.1 |
| Winter weather | Relatively Low | 46th | 2.8 of 5 | 9.7 |
| Wildfire | Very Low | 22nd | 1.9 of 5 | <0.01 |
| Hurricane | Very Low | 17th | 1.7 of 5 | <0.01 |
Perils not assessed in Mason 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 Mason 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.