This study estimated the availability of unused materials for woody biomass power generation plants under operation with FIT at the end of June 2020 as the supply potential from the profitable aggregated forests. As a result, supply potentials of used and unused materials were estimated at 65,413,601 m3/year and 13,082,720 m3/year, respectively whereas those availabilities were estimated at 54,202,304 m3/year and 10,840,481 m3/year respectively. Therefore, the rate of the availabilities to the supply potentials was 82.9%. Furthermore, the rate of the availabilities to the demands was 124.8%. With woody biomass power generation plants registered in FIT at the end of June 2020, the rate of the availabilities to the demands was 98.5%. Considering the subsidy rate of 100% to secure the reforestations, the availabilities met the current demands in Japan as a whole.
