Verbio Vereinigte BioEnergie AG is building an anaerobic digester on the site that will annually convert up to 100,000 tons of corn stover — a crop leftover consisting of everything but the kernel — into a renewable fuel that can be fed into the nation’s natural gas pipeline system. Verbio purchased the facility in November 2018 from DuPont Industrial Biosciences, which operated the plant for less than two years. The German company expects initially to produce enough RNG to equal about 7 million gallons of gasoline. That will require between 75,000 and 100,000 tons of corn stover annually, which Northrup said is readily available within 50 miles of the plant. Plans call for expanding that to possibly the equivalent of 20 million gallons of gasoline. The other side of the operation, corn ethanol production, is likely to begin sometime in 2022, he said, topping out at 10 or 12 million gallons annually. The residue from ethanol production will be added to the corn stover to produce RNG. More >>