Biogest builds second RNG plant in South Dakota

Biogest America, with U.S. headquarters in Denver, has announced the completed construction of an agricultural biogas plant in South Dakota. In partnership with Brightmark and Chevron, the biogas plant will collect cow manure for energy production from Boadwine Dairy Inc. and Mill Valley Dairy, both based in Milbank, South Dakota.

The plant has a thermal output of 70,000 MMBtu and operates on 178,000 tons of cow manure per year. During the process, manure is transformed into high-quality organic fertilizer that acts as a substitute for chemical products.

After the project is complete, the biogas generated by this manure will be captured, cleaned and converted into renewable natural gas (RNG). Biogest says its “proven biogas plant technology” offers significant advantages in energy efficiency and operational safety, as well as an easy and cost-efficient maintenance system.

“As dairy farmers, we can be part of the solution in helping the environment. The digester projects are a win-win because we can further process the manure while reducing greenhouse gasses,” says Lynn Boadwine, owner of Boadwine Dairy and Mill Valley Dairy. “Agriculture continually evolves. Our improvements in sustainability in the last generation are just short of incredible. Unfortunately, we don’t often tell our stories. We are looking forward to partnering with Brightmark to bring these next-generation projects to South Dakota.”