A huge opportunity exists to capture methane emissions from Livestock manure:

        A 1,000-pound dairy cow produces an average of 80 pounds of manure each day. This manure is often stored in holding tanks before being applied to fields. Not only does the manure produce methane as it decomposes, it may contribute to excess nutrients in waterways. 

        In 2015, livestock manure management contributed about 10 percent of all methane emissions in the United States, yet only a small percentage of livestock waste is recycled by anaerobic digesters. When livestock manure is used to produce biogas, anaerobic digestion can reduce greenhouse gas emissions, reduce odors, and reduce up to 99 percent of manure pathogens.