Abstract
There are utilization of Biomass Energy as a method of using the prune branch. Recently, that appears the case of woody biomass CGS (below WBCGS).But the efficiency of WBCGS is low, it doesn't come up to 25%. On the other hand, a lot of the prune branch has been generated in Tokyo 23 wards. Then I made distribution of those using GIS tool. And I did simulations in some case of the introduction of WBCGS. As a result, the efficiency of those became above 50% except one case. Also I considered energy that takes to put into WBCGS from pruning.