SESSION I. New Development of Energy and Climate Change Modeling and Policy Analysis Paper 1:Co-Benefits Assessment of GHG-mitigation with the GAINS Model Paper 2:Environmental and Economic Effect Analysis of Fuel Cell in Korea using MARKAL SESSION II. Recent Economic and Policy Issues Paper 3:Recent Policy Issues on Energy and Climate Change Paper 4:Climate Policy and Fiscal Constraints: Do Tax Interactions Outweigh Carbon Leakage Paper 5:Returns to Scale in the Electricity Supply Sector and Efficiency of Climate Change Policies SESSION III.Application of Energy and Climate Change Models Paper 6:The Role of Border Carbon Adjustment in the Design of Unilateral Climate Policy Paper 7:Economic Impact of GHG Mitigation by Industry and Sector in Korea Paper 8:Economic Analysis of Carbon Offset Use Paper 9:A CGE Analysis of Border Adjustments under the Cap-and-Tradee System:A Case Study of the Japanese Economy with Static and Dynamic Models