VAAFM - Anaerobic Digestion Technology

Vermont Agency of Agriculture

Food and Markets

vermont.gov

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Anaerobic Digestion Technology - Forage Crop Digesters

Another type of digester system is designed for forage crops. These digesters are generally sequential, mixed tanks that have very long retention times. They are capable of powering 1 kW of generation 24 hours a day, seven days a week for a year for every acre of dedicated crop. No forage-based digesters are now operating in Vermont, but several farms have plans to build them. They have a significant advantage because they can use a wide variety of agricultural inputs and can break down the whole plant to release energy.