Currently, Sierra Nevada’s 1.6 million gallons of excess yeast are used as a nutritional supplement to beef and dairy cows. Initially Sierra Nevada plans to use the MicroFueler to create ethanol fuel for its own fleet of cars. If sufficient fuel can be produced — ie: if we all keep drinking their sweet elixir — there’s talk of fueling employee cars as well as potential distribution.
Sierra Nevada is no stranger to environmental friendliness. They publish their solar power production, they recycle like crazy, and they’ve been using homemade biodiesel fuel for a couple years now from beer dregs.
E-Fuel on Tuesday said that the beer company will start testing EFuel’s refrigerator-sized portable ethanol refineries in the second quarter of this year using discarded beer yeast as a feedstock for ethanol.
E-Fuel last year unveiled its $9,995 home ethanol machine which ferments a mix of water and sugar into ethanol. Ethanol is mixed into gasoline at 10 percent. Flex-fuel cars can run on E85, an 85 percent blend of ethanol and gasoline.