Abstract
Municipalities need quantitative information that spans decades in order to address environmental issues effectively. We have developed a tool to estimate a snapshot of socio-economic condition and environmental load quantitatively and consistently. Based on assumptions of futuresociety, it calculates socio-economic index such as production and transport demand. Given those index and assumptions of utilized technologies, it estimates environmental load. Treating more than one environmental load by identical framework, the tool also can respond various issues which a municipalityfaces. We also have applied the tool to Shiga prefecture with three environmental targets, GHG emission, nutrient influent to Lake Biwa and final disposal of waste. In the snapshot, all the targets are met inthe year 2030. This tool will contribute to make the discussion about long term environmental plan more efficient and effective.