The brewer has worked out a deal with the inventor of the EFuel100 MicroFueler to turn beer byproduct into fuel for the fleet of biofuel trucks that Sierra Nevada already owns.
The amazing thing is that any brewer could do this. Many breweries already save the dregs from beer production, which are mostly grains high in nutrients, and sell it to farms as feed. Any brewery with biofuel trucks could keep the stuff on site for fuel. Any brewery without could sell the biofuel to somebody else.
This video tells the story of a microbrewery taking the same approach:
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