Biofuel Markets Growing Fast (and can be very diverse) US Fuel Ethanol Production Capacity Million gallons/year 4,500 Corn ethanol: 2,500 ~ 15% GHG reduction Cellulosic ethanol: 90% GHG reduction Farrell, Plevin, Turner, Jones, O'Hare & Kammen, Science, 311, 506 (2006). |