BIOFUELS: Iowa company starts commercial-scale cellulosic ethanol production Amanda Peterka, E&E reporter Published: Wednesday, July 2, 2014 A small ethanol plant in Iowa yesterday began producing the Midwest's first commercial-scale gallons of cellulosic ethanol. Please subscribe to Greenwire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.