AGUA FRIA
OperatingNatural Gas power plant
- Capacity
- 663 MW
- Primary fuel
- Natural Gas
- County
- Maricopa County
- Operator
- SALT RIVER PROJECT
- Status
- Operating
- Commissioned
- 1957
- EIA plant ID
- 141
- Generators
- 10
- Technology
- Natural Gas Steam Turbine
- Net generation (2024)
- 235 GWh
- Capacity factor (2024, EIA nameplate)
- 3.6%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 33.5561, -112.2153
AGUA FRIA, a 663 MW Natural Gas power plant in Maricopa County, Arizona. Operated by SALT RIVER PROJECT, commissioned 1957.
How AGUA FRIA compares
With 663 MW of capacity, AGUA FRIA ranks 18th among the 71 operating power plants Bywatts maps in Arizona and 13th of the 23 operating Natural Gas plants in the state. It accounts for about 4.1% of Arizona's operating Natural Gas capacity and 2.3% of all operating capacity in the state. Nationally it is the 220th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 1957, it is older than 89% 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 Maricopa County with 28 other operating plants, including PALO VERDE and SANTAN.
EIA-860 lists 10 generators at the site with 738 MW of nameplate capacity, mainly natural gas steam turbine technology (this page's HIFLD capacity figure is 663 MW). Net generation was 235 GWh in 2024 (a 3.6% capacity factor). Its generators came online between 1957 and 2022.
Grid neighborhood
The nearest named substation is AGUA FRIA (230 kV), about 0.2 miles away; the closest transmission line found within 10 miles is a 230 kV line, about 0.2 miles away. Another 5 operating power plants totaling 2,465 MW sit within 25 miles; the largest is WEST PHOENIX (1,026 MW, Natural Gas). Within 50 miles are 6 mapped data centers; the nearest is Digital Realty PHX10 (120 E Van Buren) in Phoenix, about 10.9 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
AGUA FRIA is a 663 MW natural gas power plant in Maricopa County, AZ, operated by SALT RIVER PROJECT, commissioned in 1957. Maricopa County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.7 of 5 at the 42nd national percentile. Wildfire is the leading peril, rated Relatively High by FEMA at the 85th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a natural gas plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Maricopa County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively High | 85th | 4.4 of 5 | <0.01 |
| Riverine flooding | Very High | 85th | 4.4 of 5 | 8.5 |
| Heat wave | Very High | 71st | 3.9 of 5 | 19.8 |
| Hail | Very High | 56th | 3.2 of 5 | 0.28 |
| Earthquake | Relatively Moderate | 49th | 3.0 of 5 | 0.01 |
| Strong wind | Very High | 19th | 1.8 of 5 | 1.4 |
| Tornado | Relatively Moderate | 7th | 1.3 of 5 | 0.57 |
| Lightning | Relatively High | 3rd | 1.1 of 5 | 32.3 |
| Winter weather | Relatively Low | 1st | 1.1 of 5 | 0.57 |
| Hurricane | Very Low | 0th | 1.0 of 5 | 0.01 |
Perils not assessed in Maricopa 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 Maricopa 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.