The module, based on the research performed by the work package on “Transboundary Effects and Trade Flows” within the EUCalc project, aims at quantifying the transboundary effects of user-selected decarbonization pathways. To define decarbonization pathways at the sectoral and country/regional level, integration between this module (i.e. the GTAP-EUCalc CGE model) and individual EUCalc ‘core’ modules is necessary. This document presents this integration process, that uses data from EUCalc core modules as inputs into the CGE model runs on the one hand, and provides CGE model results to the TPE on the other hand. In particular, the conversion of individual EUCalc core modules’ highly detailed outputs to exogenous shocks for the GTAP-EUCalc model and the “closeness measure” developed to allow the user to visualize the trade effects of decarbonization pathways in the Transition Pathway Explorer are described.