Towards a 1.5 degre compatible energy system for France

International audienceOver the last 20 years, successive COPs have highlighted the need for urgent action in reducing greenhouse gas emissions to avoid the global mean temperature exceeding a 2’C increase. To deal with climate urgency, that already weaken several regions of the globe, the target of 1.5’C has been mentioned in the Paris agreement in December 2015.This paper intends to explore the conditions under which such a stringent constraint must be fulfill at a country level, France. The study will focus on energy issues, relying on the TIMES-FR approach performing the optimization of the energy system in the long-term with descriptions of the technologies. The analysis horizon spans to 2072. New planning paths must be accepted that combine changing demographic structure,technologies and societal choices