Amp Americas, a dairy renewable natural gas (RNG) company has completed a project that converts dairy waste into RNG in Darlington, Wisconsin. The facility, now fully operational at Darlington Ridge Farms, is the latest of Amp Americas 12 operating digesters in Wisconsin, Indiana, Idaho, and Minnesota. The project at Darlington Ridge Farms utilizes continuous stirred tank reactor anaerobic digesters to convert 90,000 gallons of dairy cow waste per day into renewable energy. The project captures methane that would otherwise be released into the atmosphere, purifies it, and then injects it into the Alliant Energy natural gas pipeline. The RNG is used as a clean, carbon-negative transportation fuel, reducing up to 27,000 metric tons of carbon dioxide equivalent emissions per year. “Our RNG facilities prevent and capture methane from thousands of dairy cows across America,” says Grant Zimmerman, Amp Americas CEO. “Our renewable fuel reduces the cost of sustainably managing dairy waste.”
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