Anna Cretì is Full Professor at the Université de Paris IX (Paris-Dauphine), Senior Research Associate at the Ecole Polytechnique and External Affiliate of the Siebel Institute at the University of California, Berkeley. She is the Scientific Director of The Climate Economics Chair and the Natural Gas Chair at Université de Paris IX (Paris-Dauphine). She is the author of numerous articles in international peer-reviewed journals. Fulvio Fontini is Professor of Economics at the Department of Economics and Management, Università degli Studi di Padova, Italy. He has been co-chair of the ESS task force of the Council of European Energy Regulators (CEER), and member of several task forces of CEER and the Agency for Cooperation of Energy Regulators, where he was seconded as National Expert. He is the author of numerous articles in international peer-reviewed journals.