The biodiesel refinery is an unmarked location in the Mojave Wasteland.
It is found in the northwestern part of Nellis Air Force Base, next to some yellow train carts and a small tower.
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. To the left are the refinery stills. It is full of a flammable gas.
- 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 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 in Fallout: New Vegas.