SourceLine News & Insights

As the fueling and transportation industries come to terms with emission-reducing diesel alternatives, one state regulatory agency has introduced a new regulation that limits biodiesel emissions.

The California Air Resources Board approved a final Alternative Diesel Fuel (ADF) regulation that limits emissions of nitrogen oxides from biodiesel and outlines the in-use requirements for biodiesel blends.

As of Aug. 1, 2021, the additive di-tert butyl peroxide (DTBP) and R55B20 and R75B20ADF formulations can be used to comply with the regulation’s in-use requirements. Renewable diesel is also approved as an option to meet the in-use requirements. However, panelists during a July Oil Price Information Service (OPIS) webinar about the regulation questioned if the current supply of renewable diesel was adequate enough to meet the terms of the regulation. Learn more here.