Abstract
The bottom-up model is useful to represent the reality of technology and society change under the assumption of the consistent economic sectors, and the top-down model has advantage to reproduce the consistent solution among economic sectors based on the technology assumptions. In this analysis, these two types of models are integrated for the consistent environmental policy assessment considering the distribution of individual technologies. According to the bottom-up model, the sewage sludge treatment model is developed and integrated with computable general equilibrium model, which has been developed to analyze the waste management policy. In the simulation analyses, the GDP loss in 2010, which is derived from the reduction of CO2 emissions based on Kyoto Protocol and the reduction of final disposal of solid waste based on the government target, will be 1.8 trillion yen at 1995 price. By selection of new technology of sewage sludge management, the GDP loss in 2010 is mitigated by 10 billion yen. Moreover, by integration of recycling policy to increase the demand of waste in production process, the GDP loss in 2010 will be mitigated by 200 billion yen. By expanding these simulation analyses to other fields, it is possible to assess the broad environmental policies considering the introduction of the new technology.
