It is made up of a single room. At one end sits a large stack of oil drums and to the right a counter with a large amount of maize on it. It is full of a flammable gas.
- Inside are approximately 102 pieces of maize. Must be stolen.
- Having a flame based weapon out (such as the flamer) while near the gas will cause an explosion. Firing any Energy Weapons, Guns, or Explosives skill weapons inside will always cause an explosion.
- The large amount of maize found within is a reference to real world biofuel which is often made from corn.
The biodiesel refinery appears only in Fallout: New Vegas.