Waste material buried in landfills biodegrades over time to produce methane, carbon dioxide, and other gases. Treatment of domestic wastewater, agricultural waste, and food processing waste using anaerobic digestion also produces methane and other gases. Many sites flare these waste gases; or worse yet vent them directly into the atmosphere. Methane has a greenhouse gas impact on the atmosphere that is 21 times that of carbon dioxide, and burning methane in a flare completely wastes its energy value. So the best environmental solution is to use these waste gases to generate renewable power, and Capstone MicroTurbines can do it cleanly and economically.