Western Plains installs AD system

By Staff | February 14, 2013

Western Plains Energy LLC has begun operations of anaerobic digesters at its 50 MMgy plant in Oakley, Minn. The digesters are expected to reach full operational capacity in March, at which time the anaerobic digestion system will be capable of producing enough methane to completely refire the plant’s thermal oxidizer and boiler.

Installation of the system is expected to help the plant produce advanced ethanol from sorghum in the future. To qualify its fuel as an advanced biofuel under the renewable fuel standard, Western Plains Energy must power the plant with methane from its digester system, as well as utilize other advanced technologies. While the U.S. EPA calls for a combined-heat-and-power system to be among those technologies, Western Plains Energy employs other advanced technologies and has petitioned the agency for a separate pathway.