Biogas to energy in Michigan
Case Study

Biogas to energy in Michigan

Sector: Biogas Area of Expertise: Agricultural Methane

Biogas to energy in Michigan

Green Meadow Dairy Farms, Michigan

Enabling manure management at livestock operations in the US agriculture sector

Camco Clean Energy is working with one of the largest dairy farms in Michigan to capture and utilize biogas produced from anaerobically-digested manure biomass to generate energy.

Dairy farms are increasingly turning to creative ways in which to manage the manure produced by their livestock. Anaerobic manure digestion is a way to mitigate odor, control insect population, reduce manure handling costs and lessen soil and water pollution from run-off, while delivering base load energy generation to the farm or grid. In addition, the process creates by-products, such as fertilizer, bedding, mulch and potting soil. At Green Meadow Farms, digested manure is processed and sold as compost.

Biogas is a mixture of gases including methane which results when naturally occurring bacteria utilize manure as an energy source in the absence of oxygen. The farm utilizes methane in a generator, to provide electricity which is fed to the grid; and in a boiler to provide heat for the digester. During engine down time, excess methane is destroyed in a flare.

Because methane is one of the most potent greenhouse gases, 21 times more powerful than carbon dioxide in trapping heat, farms like Green Meadow have the potential to generate carbon credits as a result of capturing and utilizing biogas. Camco registered the Green Meadow Farms project with the leading credit registry in the U.S., the Climate Action Reserve (CAR), and has verified emission reductions for 2008, 2009 and 2010. To date, the site has generated 17,000 metric tonnes of carbon dioxide equivalents (tCO2e), with a further 10,000 tCO2e expected on an annual basis.

"We have been working with Camco Clean Energy for a few years now. We are extremely happy with the way they manage this project. The staff at Camco make it easy to run the digestion system by working side by side with the farm every step of the way. I would highly recommend Camco Clean Energy to anyone thinking of installing a biogas digestion system to produce electricity and generate carbon credits."

- Darcy Green Green Meadow Farms



Generator capacity

10,000 tCO2e

Emission reductions per annum

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