Biogas Combined Heat and Power Plant

This facility combines anaerobic pretreatment with a combined heat and power (CHP) system to convert Greek yogurt whey into heat and electricity. CTS Builders completed the design/ build construction of this methane recovery project.

Client: General Mills
Location: Murfreesboro, TN
Services: Design Build, Construction Management

By rethinking typical approaches to handling wastes, CTS Builders and General Mills have developed a system that processes leftover whey to generate approximately 10% of the plant’s overall electrical needs. Excess heat recovered from the biogas generator has reduced the plant’s dependence on natural gas and reduced its usage of diesel fuel by 95,000 liters annually. In addition to costs saved by eliminating the need for off-site disposal, millions of gallons of water have been returned to the watershed, and several thousand acres of farmland have been made available for agricultural use. Furthermore, the waste-to-energy system reduces greenhouse gas emissions by about 9,000 metric tons per year and creates significant annual cost savings.