SOUTHWESTERN

How SOUTHWESTERN compares

With 658 MW of capacity, SOUTHWESTERN ranks 13th among the 73 operating power plants Bywatts maps in Oklahoma and 9th of the 23 operating Natural Gas plants in the state. It accounts for about 4.7% of Oklahoma's operating Natural Gas capacity and 2.6% of all operating capacity in the state. Nationally it is the 223rd-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 1952, it is older than 91% of the 72 operating Oklahoma plants with a recorded commissioning year. Its operator, PUBLIC SERVICE CO OF OKLAHOMA, runs 6 operating plants in Oklahoma totaling 4,535 MW. It shares Caddo County with 5 other operating plants, including ANADARKO PLANT and MINCO WIND III.

EIA-860 lists 6 generators at the site with 658 MW of nameplate capacity, mainly natural gas steam turbine technology. Net generation was 779 GWh in 2024 (a 13% capacity factor), down 2% from 2022. Its generators came online between 1952 and 2008.

Grid neighborhood

The nearest named substation is ANANDARKO, about 4.2 miles away; the closest transmission line found within 10 miles is a 138 kV line owned by PUBLIC SERVICE CO OF OKLAHOMA, under 0.1 miles away. Another 8 operating power plants totaling 1,251 MW sit within 25 miles; the largest is ANADARKO PLANT (535 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