The amount of sweet corn residues as biomass in Yamanashi prefecture was estimated 19,445 ton/year, and the amount of sugar from the biomass was 655 ton/year. As a result of the fermentation test of the extract from sweet corn residues using Saccharomyces cerevisiae, fermentation ratio was 0.85. Therefore, the amount of ethanol which can be possible to produce from the biomass in Yamanashi prefecture was 285 ton/year.
