Energy transition consists in a shift from polluting and exhaustible resources to clean and renewable ones, but also in a move towards energy parsimony. This transition is one of the major challenges our economies face today. In this paper we are interested in the territorial impacts of such a transition. We develop a prospective method, combining a qualitative approach with a quantitative model, to address the following questions : would the energy transition make territorial discrepancy sharper ? Is it a threat to or an opportunity for territorial cohesion ?