US MAGNESIUM
OperatingPower plant
- Capacity
- 48 MW
- County
- Tooele County
- Operator
- US MAGNESIUM
- Status
- Operating
- Commissioned
- 1972
- EIA plant ID
- 58191
- Coordinates
- 40.9153, -112.7335
US MAGNESIUM, a 48 MW power plant in Tooele County, Utah. Operated by US MAGNESIUM, commissioned 1972. One of 71 power plants tracked in Utah on Bywatts.
Weather peril exposure
US MAGNESIUM is a 48 MW power plant in Tooele County, UT, operated by US MAGNESIUM, commissioned in 1972. Tooele County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.0 of 5 at the 24th national percentile. Wildfire is the leading peril, rated Relatively Moderate by FEMA at the 99th 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.
Tooele County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively Moderate | 99th | 5.0 of 5 | 0.02 |
| Earthquake | Relatively Low | 89th | 4.6 of 5 | 0.01 |
| Winter weather | Relatively High | 74th | 4.0 of 5 | 12.0 |
| Strong wind | Relatively Moderate | 58th | 3.3 of 5 | 1.1 |
| Heat wave | Relatively Low | 55th | 3.2 of 5 | 2.9 |
| Hail | Very Low | 19th | 1.8 of 5 | 0.11 |
| Ice storm | Very Low | 17th | 1.7 of 5 | 0.01 |
| Tornado | Very Low | 9th | 1.3 of 5 | 0.19 |
| Lightning | Relatively Moderate | 3rd | 1.1 of 5 | 30.1 |
| Riverine flooding | Very Low | 2nd | 1.1 of 5 | 0.61 |
Perils not assessed in Tooele 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 Tooele 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.