Anaergia Inc. (www.anaergia.com) today announced that the biogas upgrading facility at Fair Oaks Farms in Indiana is now operational. Anaergia designed, built and now operates the facility that converts biogas from cow manure into the equivalent of nearly 10,000 gallons per day of diesel fuel for one of the largest milk hauling fleet using renewable natural gas in the United States.
Manure collected from 11,000 dairy cows is anaerobically digested to produce a biogas composed of roughly 60% methane. Anaergia cleans, compresses and upgrades the biogas to over 98% methane under a 15 year operations contract that could be extended in the future. The product gas called biomethane, is odorized to form renewable natural gas (RNG) and then further compressed up to 4,000 psig into compressed natural gas (CNG) for vehicle fueling.