Ecologic Institute, in partnership with Ramboll and I4CE, continues its collaboration with the European Environment Agency in supporting the understanding of costs of climate impacts and climate adaptation. The overall aim of this study is to extract, complement and compile quantitative information on the economic costs and socio-economic impacts of climate adaptation versus costs of inaction in EU27 Member States. The work builds on previous work conducted by the consortium for the EEA which serves as the methodological foundation for this project.