Abstract
In this study, we developed a GIS-based decision support system to integrate plans of block renewal and sustainable energy management at a regional level. We also designed four block renewal scenarios and two technological options on future energy system for three types of block with different density, and estimated CO2 reduction potential applying the developed system to Yokohama. From the study, we reached the following conclusions; 1) CO2 emission in 2050 could be reduced by 48-70% through innovating new energy system for renewal block, 2) the micro grid system would have higher potential of CO2 emission reduction than the heat pump system in commercial detached house block, 3) the construction of low-density urban area could bring the most CO2 emission reduction.
