Bioenergy

Guide to Cow-powered Biogas Energy Released

Focus on Energy has released the Wisconsin Agricultural Biogas Casebook, an online report which includes case studies of 17 dairy farm anaerobic digesters that produce renewable energy. Wisconsin currently leads the nation in the number of operating dairy farm digesters that produce electricity and heat from cow manure and other organic materials.

The report provides an historical snapshot of the current operating digester systems on Wisconsin farms and, Focus on Energy says that the report is meant to give those interested in digesters some insight on how to implement their own system.

“We’re very proud of the leadership role Wisconsin farms have played in the field of digester systems,” said Larry Krom, project manager for Focus on Energy. “Many of the projects in the casebook received funding from Focus on Energy. It’s our hope that farms from across the state will look to this casebook as a resource. It offers many project details on how different digester systems work, describes enhancements by farm operators and includes candid observations from the farmers themselves.”

A typical anaerobic digester with a 300 kilowatt (kW) biogas-fueled generator can produce enough electricity to power approximately 224 average Wisconsin homes. In addition, the annual environmental benefits would be equivalent to offsetting nearly 2,460 tons of the greenhouse gas carbon dioxide (CO2) from being released into the atmosphere.

To download a copy of the report, click here.