MILLTOWN
OperatingPower plant
- County
- Missoula County
- Operator
- NORTHWESTERN ENERGY
- Status
- Operating
- EIA plant ID
- 2190
- Coordinates
- 46.8717, -113.8922
MILLTOWN, a power plant in Missoula County, Montana. Operated by NORTHWESTERN ENERGY. One of 53 power plants tracked in Montana on Bywatts.
Weather peril exposure
MILLTOWN is a power plant in Missoula County, MT, operated by NORTHWESTERN ENERGY. Missoula County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.4 of 5 at the 11th national percentile. Wildfire is the leading peril, rated Relatively Moderate by FEMA at the 96th 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.
Missoula County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively Moderate | 96th | 4.8 of 5 | <0.01 |
| Earthquake | Relatively Moderate | 90th | 4.6 of 5 | 0.01 |
| Ice storm | Relatively High | 72nd | 3.9 of 5 | 0.19 |
| Heat wave | Relatively Low | 44th | 2.8 of 5 | 1.2 |
| Riverine flooding | Relatively Low | 41st | 2.6 of 5 | 1.0 |
| Strong wind | Relatively Low | 16th | 1.7 of 5 | 0.27 |
| Lightning | Relatively Moderate | 15th | 1.6 of 5 | 21.7 |
| Hail | Very Low | 12th | 1.5 of 5 | 0.45 |
| Winter weather | Relatively Moderate | 5th | 1.2 of 5 | 50.9 |
| Tornado | Very Low | 4th | 1.1 of 5 | 0.04 |
Perils not assessed in Missoula 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 |
|---|---|
| Hurricane | FEMA rating is "Not Applicable" for this county |
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Missoula 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.