Christian de Perthuis is a professor of Economics at Paris Dauphine University (PSL). He led the ‘Mission Climat’ of the French Deposits and Consignments Fund, before founding the Climate Economics Chair at Paris Dauphine University. His work has led him to study international climate negotiations and the various economic mechanisms states and organisations have at their disposal to limit climate change. As a result, he presided the Committee for Green Taxation, the proposals of which led to a climate and energy contribution being introduced in the French tax system.