YUCCA

Operating

Natural Gas power plant

Capacity
425 MW
Primary fuel
Natural Gas
County
Yuma County
Operator
ARIZONA PUBLIC SERVICE CO
Status
Operating
Commissioned
1959
EIA plant ID
120
Generators
8
Technology
Natural Gas Fired Combustion Turbine
Net generation (2024)
298 GWh
Capacity factor (2024, EIA nameplate)
8%
Data vintage
EIA-860 2024 final; EIA-923 2022-2024 final
Coordinates
32.7214, -114.7106

See it on the map

YUCCA, a 425 MW Natural Gas power plant in Yuma County, Arizona. Operated by ARIZONA PUBLIC SERVICE CO, commissioned 1959.

How YUCCA compares

With 425 MW of capacity, YUCCA ranks 26th among the 71 operating power plants Bywatts maps in Arizona and 19th of the 23 operating Natural Gas plants in the state. It accounts for about 2.6% of Arizona's operating Natural Gas capacity and 1.5% of all operating capacity in the state. Nationally it is the 364th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 1959, it is older than 88% of the 69 operating Arizona plants with a recorded commissioning year. Its operator, ARIZONA PUBLIC SERVICE CO, runs 17 operating plants in Arizona totaling 8,906 MW. It shares Yuma County with 5 other operating plants, including AGUA CALIENTE SOLAR PROJECT and YUMA COGENERATION ASSOCIATES.

EIA-860 lists 8 generators at the site with 422 MW of nameplate capacity, mainly natural gas fired combustion turbine technology. Net generation was 298 GWh in 2024 (an 8% capacity factor), up 2% from 2022. Its generators came online between 1959 and 2008.

Grid neighborhood

The nearest named substation is YUCCA (161 kV), about 0.1 miles away; the closest transmission line found within 10 miles is a 161 kV line, about 0.1 miles away. Another 3 operating power plants totaling 131 MW sit within 25 miles; the largest is YUMA COGENERATION ASSOCIATES (63 MW, Natural Gas).

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

YUCCA is a 425 MW natural gas power plant in Yuma County, AZ, operated by ARIZONA PUBLIC SERVICE CO, commissioned in 1959. Yuma County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.1 of 5 at the 4th national percentile. Earthquake is the leading peril, rated Relatively High by FEMA at the 97th 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.

1.1 of 5Modeled catastrophe exposure
LowExposure band
EarthquakeLeading peril
Relatively ModerateFEMA county risk rating

Yuma County hazard ratings

PerilFEMA ratingNational percentilePeril scoreEvents per year
EarthquakeRelatively High97th4.9 of 50.09
Riverine floodingRelatively Moderate63rd3.5 of 51.3
Heat waveRelatively High44th2.8 of 515.8
WildfireVery Low36th2.4 of 5<0.01
Strong windRelatively Moderate19th1.8 of 50.33
HailVery Low12th1.5 of 50.04
TornadoVery Low4th1.2 of 50.07
LightningRelatively Low2nd1.1 of 519.7
HurricaneVery Low1st1.0 of 50.02

Perils not assessed in Yuma 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.

PerilWhy it is not scored
Coastal floodingFEMA rating is "Not Applicable" for this county
Winter weatherNo building exposure reported, so no loss rate can be derived
Ice stormFEMA rating is "Not Applicable" for this county

Model hail, wind and flood exposure for Yuma 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.