This book provides a macroeconomic evaluation of EU enlargement is undertaken with extending GTAP and ORANI-INT static/dynamic models taking into account possible integration effects: trade effect, labor mobility, capital movement, emission trading, and marginal abatement cost. The CGE models developed in this book focuses on the energy sector. Taking into consideration of energy and environmental interactions, carbon taxes are imposed on fossil fuels because we account for carbon emissions arising from the combustion of these fuels. Therefore, CO2 emissions are associated with all emitting...