Biodiesel is a renewable diesel fuel primarily used as a feedstock for blending with petroleum diesel fuel. Consisting primarily of fatty acid methyl esters (FAMEs), it is one of the world’s most diverse fuel types. Biodiesel production is achieved using agricultural by-products like vegetable oils or animal fats. For information on the chemical process behind producing biodiesel, visit energy.gov’s Biofuels Basics page.
Biodiesel is the most common bio-based fuel in Europe and one of the fastest-growing fuel products in the United States. The first EPA-designated advanced biofuel to be commercialized in the U.S., Biodiesel meeting ASTM D6751 specifications can be used in existing diesel engines without modification.