Multi-feedstocks key to reducing risk in biorefineries

In Michigan, developing biorefineries to be multi-feedstock can help to reduce the risks associated with feedstock availability by up to 70% through what is called modern portfolio theory—or the use of more than one feedstock. Rather than relying on a single feedstock like corn stover that is dependent on a single group of farmers with similar environmental conditions producing the sufficient amount of feedstock needed to operate a commercial scale cellulosic ethanol facility, introducing other feedstocks like miscanthus, wheat straw or energy cane could significantly help reduce the risks in case supplies are somehow interrupted.