Green Whiskey

I was watching Countryfile last weekend, and they were profiling the Scottish whiskey industry. Now, I read that the by-products of the distilling process are being used in biomass-fueled combined heat and power plants. So far, there are two, one in Fife, and a new one proposed for Speyside. The plants use draff -- the solid grain product removed from the mash tun prior to fermentation -- and pot ale -- the liquid high-protein residue from a still. To give an idea of scale, the biomass plant in Speyside would produce over 7MW and power 9000 local homes.