Anheuser-Busch InBev, the world’s largest brewer, has been repurposing its spent grain for the past century, selling it to local farmers.
Mike Beck, director of utilities support at Anheuser-Busch InBev, told The Associated Press in an email that spent grains are not currently a viable energy source for its breweries. However, Beck noted that the company regularly investigates new technologies to see if they could be applicable to its operations.
Anheuser-Busch InBev does employ bio-energy recovery systems, which turn wastewater into biogas, in most of its U.S. breweries. That provides up to 9 percent of the fuel needed in its boilers, he said.
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