FOUR CORNERS
OperatingCoal power plant
- Capacity
- 1,540 MW
- Primary fuel
- Coal
- County
- San Juan County
- Operator
- ARIZONA PUBLIC SERVICE CO
- Status
- Operating
- Commissioned
- 1969
- EIA plant ID
- 2442
- Coordinates
- 36.6900, -108.4814
FOUR CORNERS, a 1,540 MW Coal power plant in San Juan County, New Mexico. Operated by ARIZONA PUBLIC SERVICE CO, commissioned 1969.
Weather peril exposure
FOUR CORNERS is a 1,540 MW coal power plant in San Juan County, NM, operated by ARIZONA PUBLIC SERVICE CO, commissioned in 1969. San Juan County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.0 of 5 at the 1st national percentile. Riverine flooding is the leading peril, rated Relatively Moderate by FEMA at the 83rd 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.
San Juan County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Relatively Moderate | 83rd | 4.3 of 5 | 1.4 |
| Earthquake | Relatively Low | 68th | 3.7 of 5 | <0.01 |
| Wildfire | Relatively Low | 63rd | 3.5 of 5 | <0.01 |
| Heat wave | Relatively Moderate | 50th | 3.0 of 5 | 1.8 |
| Winter weather | Relatively High | 25th | 2.0 of 5 | 12.4 |
| Ice storm | Relatively Low | 18th | 1.7 of 5 | 0.01 |
| Lightning | Relatively High | 10th | 1.4 of 5 | 50.2 |
| Hail | Very Low | 9th | 1.4 of 5 | 0.08 |
| Tornado | Very Low | 7th | 1.3 of 5 | 0.14 |
| Strong wind | Relatively Low | 4th | 1.2 of 5 | 0.06 |
Perils not assessed in San Juan 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 San Juan 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.