Abstract
The objective of this study is to examine whether sufficient ethanol can still be supplied in the year 2030 along with the assurance of food suppliesuch as corn and sugarcane, which are raw materials of ethanol. Moreover, this study attempts to consider how to efficiently trade farm products in order to minimize Ecological Footprint (EF). The result indicates that in addition to a secured supply for both human consumption and animal feeds, 160 million tons of corn and 520 million tons of sugarcane are still available in the year 2030 as surplus. The study also finds that if this whole surplus is converted into ethanol, 109.6 billion liters of ethanol can be used.
