H WILSON SUNDT GENERATING STATION
OperatingCoal power plant
- Capacity
- 559 MW
- Primary fuel
- Coal
- County
- Pima County
- Operator
- TUCSON ELECTRIC POWER CO
- Status
- Operating
- Commissioned
- 1962
- EIA plant ID
- 126
- Coordinates
- 32.1600, -110.9047
H WILSON SUNDT GENERATING STATION, a 559 MW Coal power plant in Pima County, Arizona. Operated by TUCSON ELECTRIC POWER CO, commissioned 1962.
Weather peril exposure
H WILSON SUNDT GENERATING STATION is a 559 MW coal power plant in Pima County, AZ, operated by TUCSON ELECTRIC POWER CO, commissioned in 1962. Pima County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.9 of 5 at the 24th national percentile. Riverine flooding is the leading peril, rated Very High by FEMA at the 95th 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.
Pima County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Very High | 95th | 4.8 of 5 | 12.8 |
| Wildfire | Relatively High | 94th | 4.7 of 5 | <0.01 |
| Heat wave | Very High | 62nd | 3.5 of 5 | 8.1 |
| Earthquake | Relatively Moderate | 47th | 2.9 of 5 | 0.01 |
| Hail | Relatively Moderate | 34th | 2.4 of 5 | 0.24 |
| Strong wind | Relatively Moderate | 12th | 1.5 of 5 | 0.79 |
| Winter weather | Relatively Moderate | 12th | 1.5 of 5 | 1.8 |
| Tornado | Relatively Low | 7th | 1.3 of 5 | 0.26 |
| Lightning | Very High | 6th | 1.2 of 5 | 42.8 |
| Hurricane | Very Low | 0th | 1.0 of 5 | 0.02 |
Perils not assessed in Pima 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 |
| Ice storm | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Pima 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.