CORONADO
OperatingCoal power plant
- Capacity
- 822 MW
- Primary fuel
- Coal
- County
- Apache County
- Operator
- SALT RIVER PROJECT
- Status
- Operating
- Commissioned
- 1979
- EIA plant ID
- 6177
- Generators
- 2
- Technology
- Conventional Steam Coal
- Net generation (2024)
- 2,673 GWh
- Capacity factor (2024, EIA nameplate)
- 37%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 34.5789, -109.2708
CORONADO, an 822 MW Coal power plant in Apache County, Arizona. Operated by SALT RIVER PROJECT, commissioned 1979.
How CORONADO compares
With 822 MW of capacity, CORONADO ranks 11th among the 71 operating power plants Bywatts maps in Arizona and 2nd of the 4 operating Coal plants in the state. It accounts for about 24% of Arizona's operating Coal capacity and 2.8% of all operating capacity in the state. Nationally it is the 123rd-largest of the 324 operating Coal plants in the database. Commissioned in 1979, it is older than 72% of the 69 operating Arizona plants with a recorded commissioning year. Its operator, SALT RIVER PROJECT, runs 11 operating plants in Arizona totaling 5,203 MW. It shares Apache County with one other operating plant, SPRINGERVILLE.
EIA-860 lists 2 generators at the site with 822 MW of nameplate capacity, all conventional steam coal technology. Net generation was 2,673 GWh in 2024 (a 37% capacity factor), down 10% from 2022. Its generators came online between 1979 and 1980.
Grid neighborhood
The nearest named substation is CORONADO (500 kV), about 0.4 miles away; the closest transmission line found within 10 miles is a 500 kV line, about 0.4 miles away. One other operating power plant sits within 25 miles: SPRINGERVILLE (1,614 MW, Coal).
Computed by Bywatts from HIFLD power plant, substation and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
CORONADO is an 822 MW coal power plant in Apache County, AZ, operated by SALT RIVER PROJECT, commissioned in 1979. Apache County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.3 of 5 at the 7th national percentile. Wildfire is the leading peril, rated Relatively 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.
Apache County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively High | 95th | 4.8 of 5 | <0.01 |
| Riverine flooding | Relatively Moderate | 72nd | 3.9 of 5 | 2.8 |
| Earthquake | Relatively Low | 54th | 3.2 of 5 | <0.01 |
| Heat wave | Relatively Low | 23rd | 1.9 of 5 | 0.65 |
| Hail | Very Low | 11th | 1.4 of 5 | 0.06 |
| Winter weather | Relatively High | 5th | 1.2 of 5 | 6.2 |
| Lightning | Very High | 5th | 1.2 of 5 | 53.0 |
| Hurricane | Very Low | 4th | 1.2 of 5 | 0.01 |
| Tornado | Very Low | 2nd | 1.1 of 5 | 0.27 |
| Strong wind | Very Low | 2nd | 1.1 of 5 | 0.04 |
| Ice storm | Relatively Low | 1st | 1.0 of 5 | 0.01 |
Perils not assessed in Apache 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 Apache 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.