Climate change imperatives have led different countries to implement carbon pricing schemes, either through cap-and-trade programs or carbon taxes. Key experiences are discussed in this plenary, to share successes and potential pitfalls. Chair: Christian de Perthuis, Université Paris-Dauphine Ian Parry, International Monetary Fund Augusta Wilson, Legal Defense Fund Onil Bergeron, Quebec Ministry of the Environment Conference Website: iaee2019.org/ IAEE Website: www.iaee.org