The goal of this paper is to evaluate the economic performance of co-located corn grain ethanol (Gen 1) and cellulosic ethanol (Gen 2) facilities. We present six scenarios to evaluate the impact of stover-to-grain mass (SGM) ratios on overall minimum ethanol selling price (MESP). For the Gen 1 plant, MESP is $3.18/ gasoline gallon equivalent (GGE) while for the Gen 2 plant it is $5.64/GGE. Co-located Gen 1 and Gen 2 plants operating at the lowest SGM ratio of 0.4 generates the lowest overall MESP of $3.73/GGE as well as the highest MESP for cellulosic ethanol of $7.85/GGE. Co-located plants operating at the highest SGM ratio of 1.0 achieve the highest overall MESP of $3.94/GGE as well as the lowest MESP for cellulosic ethanol of $5.47/GGE. Sensitivity analysis shows that the prices of feedstocks have the greatest impact on the overall MESP.
Available at: http://works.bepress.com/robert_brown/2/
This is the peer reviewed version of the following article: Longwen Ou, Tristan Brown, Rajeeva Thilakaratne, Guiping Hu, and Robert Brown, "Techno-economic Analys of Co-located Corn Grain and Corn Stover Ethanol Plants," Biofuels, Bioproducts and Biorefining, 8 (2014): 412-422, doi: 10.1002/bbb.1475. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for self-archiving.