Anaerobic digestion takes place in an oxygen-lacking (anaerobic) container with temperatures and conditions favorable to microorganisms, the powerhouse of the digestion process. Biodegradable material such as manure, wastewater sludge, food waste, etc. is fed into the system. The microorganisms break down, or “digest” the organic material, creating biogas and digestate. Biogas contains mostly (50 – 75%)2 methane, plus carbon dioxide, hydrogen sulfide, water, and trace compounds. Biogas can be used in place of fossil-based natural gas to generate electricity, heat, or even bioplastics, and can be further conditioned into renewable natural gas and transportation fuels. And the solid and liquid portions of the digestate have many beneficial uses--fertilizer, animal bedding, crop irrigation, soil amendment, sustainable building materials, etc.