This is good news:
The combined systems offer breweries a comprehensive way to reduce their environmental footprints, as well as cut operating costs: recycling their brewing waste into a biofuel source; slashing the amount of grain waste trucked out of their facilities; and ultimately using less energy overall. “Beer making is energy intensive – you boil stuff, use hot water and steam and then use electric energy for cooling – so if you recover more than 50 percent of your own energy costs from the spent grain that’s a big saving,” says Bengel in a statement. – from Energy Boom
Yet another great reason to drink beer! :)