The article explores the peculiarities of the modelling carried out within the European Commission’s «Quo Vadis» EU gas market current regulatory framework and architecture reforming project. The characteristics of the European gas market model (EGMM) of the consultant, chosen by the European Commission – Hungarian Regional Centre for Energy Policy Research (REKK), are analyzed as well as its applicability for the long-term quantitative modelling within the project framework in order to assess the validity of conclusions and recommendations subsequently received in its course.

Key words: European Commission, European Union, gas market, long-term modelling, optimization model, energy policy, regulation, Quo Vadis.