Chief Executive Officer

Isabelle Kocher graduated from the École normale supérieure in Paris in 1987 and Mines ParisTech engineering school. She also holds a master’s degree in quantum optics and a postgraduate certificate in physics.


From 1997 to 1999, Kocher was director of the postal and telecommunication budgets, followed by the defense budget at the French Budget Department. Between 1999 and 2002, she worked as industrial affairs advisor at the office of French prime minister Lionel Jospin.

She joined the Suez company in 2002 and held functional and operational positions. She was running its French water operations when it became GDF Suez in 2008. Kocher was then elevated to finance director and operations director.

She was appointed in 2011 as chief financial officer of GDF Suez. Between October 2014 and April 2016, she served as deputy CEO and chief operating officer. On May 3, 2016, she was appointed CEO of Engie, replacing Gérard Mestrallet. She became the only woman CEO in the CAC 40 index.


Kocher is a knight of the Legion of Honor and a knight of the French National Order of Merit.

In 2016 and 2017, Isabelle Kocher ranked as the 3rd « Most Powerfull Woman » in the world, in business category, according to the magazine Fortune.



Isabelle Kocher believes the sector must face a revolution in order to meet the challenge and move towards a world that is decarbonised, partly decentralised and digitalised and where energy is available to all, including developing countries.

Open-innovation and digital technologies are vital to Engie’s transition, as digitization must enable the management of local renewable energy stocks through intelligent networks.


Presenting at the following session(s):

Tuesday, 7 May 2018 – 10:45-12:00 – Society & Visions | Panel Debate


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