GEISMAR

How GEISMAR compares

With 84 MW of capacity, GEISMAR ranks 37th among the 72 operating power plants Bywatts maps in Louisiana and 27th of the 41 operating Natural Gas plants in the state. It accounts for about 0.5% of Louisiana's operating Natural Gas capacity and 0.3% of all operating capacity in the state. Nationally it is the 717th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 1985, it is newer than 47% of the 72 operating Louisiana plants with a recorded commissioning year. It shares Ascension Parish with 2 other operating plants, GEISMAR COGEN and SHELL CHEMICAL.

EIA-860 lists 3 generators at the site with 84 MW of nameplate capacity, mainly natural gas fired combustion turbine technology. Net generation was 514 GWh in 2024 (a 70% capacity factor), up 25% from 2022. Its generators came online between 1985 and 2005.

Grid neighborhood

The closest transmission line found within 10 miles is a 230 kV line owned by ENTERGY LOUISIANA LLC, under 0.1 miles away. Another 15 operating power plants totaling 2,983 MW sit within 25 miles; the largest is PLAQUEMINE COGENERATION PLANT (987 MW, Natural Gas).

Computed by Bywatts from HIFLD power plant and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology