Anaerobic Digestion Popularity Poll  How do you rate Anaerobic Digestion as a renewable energy source? Top choice due to its ability to produce methane, and spare heat. Great process but too many problems. Just one of the many renewable sources which can be used to create green energy. Other renewables are better and it will never catch on. AD is not a good process, it will always be too expensive, and parasitic energy loss is too high. If you think differently write you opinion here:  Poll provided by Renewable Energy News.