Greenfield utilizes and extracts value from the whole corn kernel. In fermenting corn sugars into energy or specialty chemicals, roughly one third of the weight produces alcohol, a third produces distillers grain and corn oil, and a third produces CO2.

In addition to producing alcohol and ethanol, the C02 is sold to companies that make carbonated beverages and concrete, and the corn oil and distillers grains are sold to farms and feed mills for animal nutrition.