Standard Oil first erected the refinery in 1909. Today's facility is part of a complex made of nine individual plants across the region. The main plant is located on the east bank of the Mississippi River. There are about 6,300 workers spread across these sites, including 4,000 direct employees (the rest are contractors).
Genesis Energy LP recently invested $125 million to improve ExxonMobil's existing assets in the Baton Rouge area. The investment includes plans to build an 18-mile, 20-inch diameter crude oil pipeline that connects Genesis Energy's Port Hudson terminal, to ExxonMobil's Baton Rouge refinery. The Baton Rouge refinery's tank farm has a capacity of 502,500 barrel-per-day (bpd).