Didier Sire entered in 1981 the Distribution Division of EDF GDF before joining the Marketing Division of Gaz de France in 1990 and being appointed « Chief of Staff » of the Chairman in 1994
He held between 1997 and 2003 varied posts in international sector notably as responsible of Russia/CIS and LNG in the Gas Purchase Division. He was appointed Strategy Deputy Vice President in July 2003.
After the merger between Gaz de France and Suez in 2008, he was in charge of Strategy and Regulated Affairs in Energy International Business Line before joining Energy Europe Business Line on the 1st of January 2012.
Didier SIRE joined the World Energy Council in 2016 as Senior Advisor to the Secretary General.
He is graduated of the Ecole Polytechnique and of the Ecole Nationale de la Statistique et de l’Administration Economique (ENSAE)