By Amanda Bilek, Biomass Magazine.
In July, when the U.S. EPA published a final rule that expanded cellulosic fuel pathways to include renewable compressed natural gas (CNG) and liquefied natural gas (LNG) derived from various sources of biogas, a surge of cellulosic fuel credits from biogas was widely anticipated. After two months of reporting, speculation proved correct. August and September saw record volumes of cellulosic renewable information numbers (RINs). These high volumes were not generated from liquid fuels like ethanol or renewable gasoline, but from renewable CNG and LNG.