MARSHALLTOWN GENERATING STATION
OperatingPower plant
- County
- Marshall County
- Operator
- INTERSTATE POWER AND LIGHT CO
- Status
- Operating
- Commissioned
- 2017
- EIA plant ID
- 58236
- Coordinates
- 42.0433, -92.8728
MARSHALLTOWN GENERATING STATION, a power plant in Marshall County, Iowa. Operated by INTERSTATE POWER AND LIGHT CO, commissioned 2017.
Weather peril exposure
MARSHALLTOWN GENERATING STATION is a power plant in Marshall County, IA, operated by INTERSTATE POWER AND LIGHT CO, commissioned in 2017. Marshall County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.4 of 5 at the 35th national percentile. Tornado is the leading peril, rated Relatively Moderate by FEMA at the 93rd percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to this plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Marshall County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Tornado | Relatively Moderate | 93rd | 4.7 of 5 | 0.60 |
| Heat wave | Very Low | 90th | 4.6 of 5 | 4.9 |
| Strong wind | Relatively High | 70th | 3.8 of 5 | 6.4 |
| Winter weather | Relatively Moderate | 69th | 3.7 of 5 | 15.6 |
| Wildfire | Very Low | 56th | 3.3 of 5 | <0.01 |
| Lightning | Relatively Low | 52nd | 3.1 of 5 | 43.1 |
| Ice storm | Relatively Low | 46th | 2.8 of 5 | 0.56 |
| Hail | Relatively Moderate | 42nd | 2.7 of 5 | 6.2 |
| Riverine flooding | Relatively Low | 38th | 2.5 of 5 | 2.4 |
| Earthquake | Very Low | 15th | 1.6 of 5 | <0.01 |
| Hurricane | Very Low | 4th | 1.2 of 5 | <0.01 |
Perils not assessed in Marshall 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 Marshall 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.