The California Air Resource Board (CARB) certified on 20 July a new biodiesel additive that reduces the fuel’s emissions, making it the “cleanest” tested diesel fuel in the USA.

The additive, branded VESTA 1000, reduced all measurable emissions – including nitrous oxide (NOx) – when blended with California’s unique CARB diesel blend, the National Biodiesel Board (NBB) said in a statement.

Designed to ensure compliance with CARB’s Alternative Diesel Fuel Regulation, scheduled to come into effect on 1 January 2018, the additive reduced NOx emissions by 1.9% and particulate matter by 18% when compared to plain CARB diesel.

NBB led the initial research and development of the additive, while actual production would be handled by California Fueling LLC with Pacific Fuel Resource LLC being responsible for market distribution.

“This impressive NBB-led effort, over the course of the past 18 months, has resulted in a first-of-a-kind CARB approval, which enables biodiesel to be the renewable fuel of choice to meet California‘s stringent Low Carbon Fuel Standard (LCFS) carbon reduction requirements,” said Pat McDuff, president at California Fueling.