Gevo, Inc. is a renewable chemicals and advanced biofuels company headquartered in unincorporated Douglas County, Colorado in the Denver-Aurora metropolitan area. Gevo operates in the sustainability sector, pursuing a business model based on the Circular Economy concept. The company develops bio-based alternatives to petroleum-based products using a combination of biotechnology and classical chemistry. Gevo uses the GREET model from Argonne National Laboratory as a basis for its measure of sustainability with the goal of producing high-protein animal feed, corn-oil products, energy-dense liquid hydrocarbons. Gevo is focused on converting sustainably grown raw materials, specifically no. 2 dent corn, into high-value protein and isobutanol, a primary building block for renewable hydrocarbons, including sustainable aviation fuel, renewable gasoline, and renewable diesel. Gevo markets these fuels as directly integrable on a “drop in” basis into existing fuel and chemical products. Gevo's investors include Burrill & Company, Khosla Ventures, Lanxess, Osage University Partners, Total, and Virgin Green Fund, among others. Wikipedia