The decarbonization of energy systems relies on technico-economic and environmental studies spanning 20 to 25 years. A major scientific challenge lies in coupling climate and energy modeling in these studies. The objective of this thesis will be to develop a groundbreaking methodology that integrates climate science model projections and their variability into the design of energy systems at various scales (local and national).

This research will be divided into three main parts. First, it will assess the impact of climate change on energy production, conversion, transport, and storage technologies. Second, it will develop a methodological framework to select and integrate the diversity of climate scenarios into energy models, enabling the evaluation of their impacts. Finally, it will evaluate the severity of extreme climate events by analyzing their magnitude and frequency of occurrence in the models. This work will contribute to improving the robust design of energy systems under climate constraints and applying it to case studies.