producing one ton of fuel ethanol from cassava cellulose. Take a 200,000 t/a fuel cassava ethanol plant such as in Cofco Bioenergy Co, Beihai, China as an example: the deployment of Case 3 will re- sult in approximately 12,080 ton of cellulosic fuel ethanol produc- tion per year, and a net annual profit of $6.04 million will be achieved. Besides, the feedstock handling and residue disposal of Base Case and Case 3 are exactly the same, perhaps the disposal cost of residues could be reduced because the removal of cellulose from cassava tubers caused the reduction of residue volume.