The first part of this project collects the existing literature of greenhouse gases (GHGs) emission trend forecasting and then sums up the suitable methodology for emission forecasting to each emission entity level. Furthermore, economic impact analysis (EIA) was applied to assess the economic impact of implementing the emission standard of performance from new stationary sources. Thus, the policy applications were suggested based on the assessment results. In the second part, the international decision making procedure of Clean Development Mechanism (CDM) on investment additionality is investigated. The localized industrial benchmarks are then established based on the empirical data. Furthermore, eight cases of investment analysis of Offset Project applications and ten international CDM methodologies have examined by this project to facilitate the work of Environmental Protection Administration (EPA) . To assist with analysis and review the individual case of GHGs emissions evaluation and management, this project has examined 47 cases of environment development activities under the principles of validity and completeness. Three key-points principles of review are emphasized, they are quantitative emissions assessment, reduction measures planning, and emission data reporting. Aside from that, three tracking cases have been checked with report and on-site survey for each individual case so as to make sure each case whether completes the commitment or not. Finally, a series of training programs and international visiting are held so as to support the issues about the GHGs management.

Early Action Project and Offset Project;Additionality of investment;Environmental impact assessment;Best available techniques;Available technologies for reducing GHGs emissions;Reduction costs for GHGs;Economic Impact Analysis