GILA RIVER POWER STATION

Operating

Natural Gas power plant

Capacity
1,238 MW
Primary fuel
Natural Gas
County
Maricopa County
Operator
GILA RIVER POWER STATION LP
Status
Operating
Commissioned
2003
EIA plant ID
55306
Generators
3
Technology
Natural Gas Fired Combined Cycle
Net generation (2024)
2,907 GWh
Capacity factor (2024, EIA nameplate)
53%
Data vintage
EIA-860 2024 final; EIA-923 2022-2024 final
Coordinates
32.9750, -112.6944

See it on the map

GILA RIVER POWER STATION, a 1,238 MW Natural Gas power plant in Maricopa County, Arizona. Operated by GILA RIVER POWER STATION LP, commissioned 2003.

How GILA RIVER POWER STATION compares

With 1,238 MW of capacity, GILA RIVER POWER STATION ranks 6th among the 71 operating power plants Bywatts maps in Arizona and 3rd of the 23 operating Natural Gas plants in the state. It accounts for about 7.6% of Arizona's operating Natural Gas capacity and 4.3% of all operating capacity in the state. Nationally it is the 54th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 2003, it is newer than 46% of the 69 operating Arizona plants with a recorded commissioning year. It shares Maricopa County with 28 other operating plants, including PALO VERDE and SANTAN.

EIA-860 lists 3 generators at the site with 619 MW of nameplate capacity, all natural gas fired combined cycle technology (this page's HIFLD capacity figure is 1,238 MW). Net generation was 2,907 GWh in 2024 (a 53% capacity factor), up 10% from 2022.

Grid neighborhood

The nearest named substation is GILA RIVER (500 kV), about 0.1 miles away; the closest transmission line found within 10 miles is a 230 kV line owned by ARIZONA PUBLIC SERVICE COMPANY, under 0.1 miles away. Another 7 operating power plants totaling 1,744 MW sit within 25 miles; the largest is SUNDEVIL POWER HOLDINGS - GILA RIVER (1,238 MW, Natural Gas). Within 50 miles are 2 mapped data centers; the nearest is Digital Realty PHX10 (120 E Van Buren) in Phoenix, about 48.8 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

GILA RIVER POWER STATION is a 1,238 MW natural gas power plant in Maricopa County, AZ, operated by GILA RIVER POWER STATION LP, commissioned in 2003. 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.

2.7 of 5Modeled catastrophe exposure
ElevatedExposure band
WildfireLeading peril
Very HighFEMA county risk rating

Maricopa County hazard ratings

PerilFEMA ratingNational percentilePeril scoreEvents per year
WildfireRelatively High85th4.4 of 5<0.01
Riverine floodingVery High85th4.4 of 58.5
Heat waveVery High71st3.9 of 519.8
HailVery High56th3.2 of 50.28
EarthquakeRelatively Moderate49th3.0 of 50.01
Strong windVery High19th1.8 of 51.4
TornadoRelatively Moderate7th1.3 of 50.57
LightningRelatively High3rd1.1 of 532.3
Winter weatherRelatively Low1st1.1 of 50.57
HurricaneVery Low0th1.0 of 50.01

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.

PerilWhy it is not scored
Coastal floodingFEMA rating is "Not Applicable" for this county
Ice stormFEMA 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.