From July 2014 to December 2015, Canfin was the Senior Advisor on Climate at World Resources Institute (WRI), ranked the most influential think tank in the world on environmental issues, on the preparation of the International climate summit to be held in Paris in December 2015 (COP21). For this matter, he also co-chaired with Alain Grandjean the Commission for innovative financing for climate, mandated by the President of the French Republic.