How Sierra Nevada does it:
FuelCell Energy has upgraded its 1 megawatt Direct Fuel Cell (DFC) power plant at Sierra Nevada Brewing Co. to use fuel created from a waste byproduct of the brewing process.
The breweryâ€™s fuel cell power plant had been running on natural gas. Now, in an effort to increase efficiency and be more environmentally friendly, it runs on the brewery by-product methane.
Manufacturing.net reports that 20-40% reduction in fuel costs for the plant is possible by the 250 to 400 kilowatts of electricity that it can produce via biogas.