Mathieu joined Energy cities in October 2025 to strengthen advocacy work. His main expertise is about energy sharing, energy communities and solar energy.
He holds a master in Political Sciences and another one in Environnemental Management. He worked previously as a policy advisor in Brussels regional politics and then as a Public affairs Manager and Project Leader at Energie Commune.
He strongly believes in a more decentralized and democractic energy system as a driver to speed-up energy transition.
Beyond energy issues, he is passionate about mountains and cooking.