Gérard Mestrallet is a graduate of Ecole Polytechnique, Ecole de l’Aviation Civile, Institut d’Etudes Politiques (Toulouse) and the Ecole Nationale d’Administration. He was Civil administrator in the Treasury and Advisor on Industrial Affairs to Finance Minister Jacques Delors. In 1984, he became Advisor to the Chairman of Compagnie de Suez. In 1986, he was appointed Senior Executive Vice President in charge of Industrial Affairs. In 1991, M. Mestrallet became Managing Director of Société Générale de Belgique. In July 1995, he was appointed Chairman and Chief Executive Officer of Compagnie de Suez. M. Mestrallet was Chief Executive Officer and Chairman of the Executive Board of Suez Lyonnaise des Eaux until May 2001, when he was appointed Chairman and Chief Executive Officer of Suez. In July 2008, he was appointed Chairman and Chief Executive Officer of GDF SUEZ and was renewed in this position on April 2012.
On April 24, 2015, GDF SUEZ is renamed and becomes ENGIE.
Gérard Mestrallet is also chairman of Paris EUROPLACE.