COOLIDGE GENERATION STATION

How COOLIDGE GENERATION STATION compares

With 726 MW of capacity, COOLIDGE GENERATION STATION ranks 13th among the 71 operating power plants Bywatts maps in Arizona and 8th of the 23 operating Natural Gas plants in the state. It accounts for about 4.5% of Arizona's operating Natural Gas capacity and 2.5% of all operating capacity in the state. Nationally it is the 176th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 2011, it is newer than 59% of the 69 operating Arizona plants with a recorded commissioning year. It shares Pinal County with 4 other operating plants, including DESERT BASIN and SUNDANCE.

EIA-860 lists 12 generators at the site with 726 MW of nameplate capacity, all natural gas fired combustion turbine technology. Net generation was 197 GWh in 2024 (a 3.1% capacity factor), down 40% from 2022.

Grid neighborhood

The nearest named substation is RANDOLPH (230 kV), about 0.3 miles away; the closest transmission line found within 10 miles is a 230 kV line, about 0.3 miles away. Another 5 operating power plants totaling 1,327 MW sit within 25 miles; the largest is DESERT BASIN (646 MW, Natural Gas). Within 50 miles are 5 mapped data centers; the nearest is CyrusOne Phoenix in Phoenix, about 32.8 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