Constant is Senior Manager for Clean Energy. In this role, he manages the Clean Energy Network and supports cities to plan and implement ambitious energy programmes to decarbonise electricity, heating and cooling. Before that, he held various roles focusing on power sector decarbonisation and sustainable urbanisation. As a campaign manager, he helped to double the number of global companies committing to 100% renewable power through The Climate Group’s RE100 initiative. He also worked as an analyst at CIFF – one of the world’s largest philanthropic organisations working on climate change. He started his career working for various French environmental public institutions after a Master in Public Affairs from Sciences po Paris and an MSc in Environmental Technology from Imperial College London.