California regulators have found that transportation emissions are the most difficult to reduce, unlike those from electricity generation. The state just took a major step by approving significant changes to its Low Carbon Fuel Standard program.
Renewable diesel, a biofuel that differs from biodiesel by the feedstock used and its chemical makeup, making it indistinguishable from petrodiesel, is a small but growing industry. The announcement from UPS was welcome news for three companies.
Jets no longer run solely on fuel derived from petroleum, thanks in part to Colorado-based Red Rock Biofuels. They signed contracts with FedEx and Southwest Airlines for "renewable jet fuel" that is derived from wood-based biomass.