Executive Committee chart

Thierry TROUVÉ has been GRTgaz’s Chief Executive Officer since 26 April 2013.

• Knight of the French Legion of Honour. Knight of the French National Order of Merit
• President of the IMT Mines Ales School Council
• Board Member at the European Network of Transmission System Operators for Gas (ENTSOG)
• Spokesman of the Energie working group in Hydrogen Europe

A graduate of one of France’s top engineering schools, prior to joining GRTgaz, Thierry Trouvé was CEO of Elengy from 2009 to 2013.

Thierry Trouvé began his career at the Ministry of Defence before taking up different posts at the Paris Transport Authority (1990) and then at the Department of Industry, Research and the Environment in the Nord-Pas de Calais region (1996). In 2000, he joined the French Energy Regulatory Commission (CRE) where he managed its electricity market and public utilities division.

In 2003, he was appointed Director of Pollution and Risk Prevention Operations, working with the French Ministry of Ecology and Sustainable Development. In 2006, he became GRTgaz’s Deputy CEO.

Pierre DUVIEUSART has been Deputy CEO since 1 September 2018.

Pierre Duvieusart began his career in 1992 as an engineer designing heat exchangers for combined cycle plants and cogeneration.

He then joined Elf Aquitaine as a Project Economist, then as Financial Controller in the Exploration and Production Division.

In 1999, he joined Entenial, the banking subsidiary of the AGF-Allianz group, where he was the "Infrastructures and Energy" manager.

He joined Gaz de France in 2001 as an M&A Project Manager, before joining the team in charge of making the company public. In 2006, he became the Manager of the Financial Division within GRDF.

Pierre Duvieusart has been GRTgaz’s Finance Director since 1 March 2012.

In September 2018, Pierre Duvieusart was appointed GRTgaz’s Deputy CEO.

Franck Wintenberger started his career at EDF (1996 to 2011).

• From 1996 to 2004, he had numerous responsibilities working in EDF’s finance division, handling consolidation, and management control for EDF and then international entities.
• In 2004, his international career began when he was appointed General Secretary for EDF in Egypt. 
• In 2006, Franck Wintenberger was transferred to Poland where he held the post of President of the Surveillance Council for thermal power plant run by Tarnobrzeg (EDF’s Polish subsidiary) and Co-director of the cogeneration plant in Kraków.

He then joined the gas industry in 2011 where he has remained to this day.

• In 2011, Franck Wintenberger became Director of Customers and Suppliers for East Ile-de-France at GRDF.
• From 2013 to 2015, he held the post of Director of Customers and Territories for the East region at GRDF.
• In 2016, he was appointed Director of Regions & Future Projects and member of GRDF’s Executive Committee.
• In 2018, Franck Wintenberger was appointed Director of Ile-de-France Networks at GRDF.
• Since 2014, Franck Wintenberger has also held the position of President of the Board for Romanian gas distributor Distrigas Sud Retele.

Franck Wintenberger, aged 50, holds an Executive MBA from the University of Chicago Booth School of Business and graduated from ESCEM School of Business and Management in Tours and Poitiers.

Anne-Sophie DECAUX has been Technical Director - Head of the Industrial Performance & New Technologies Domain since 1 September, 2018.

A graduate of the Arts et Metiers Institute of Technology (ENSAM) in Paris, Anne-Sophie Decaux began her career as a project manager in gas engineering, then becomingan expert engineer working on underground storage surface installations at Gaz de France’s (GDF) Transport Department. After this, she joined GDF’s Research Department where she managed a group of researchers, before being appointed managing director of the Paris distribution network at GRDF, French gas distribution network.

In 2009, she joined GRTgaz as Deputy Director for the Seine Valley Region. In 2013, she became head of the Technical and Expertise Centre, which will become GRTgaz's Technical Department.

On 1 September, 2018, Anne-Sophie DECAUX was appointed Head of the Industrial Performance and New Technologies Domain, which includes, in addition to the Technical Department, the IT Department and RICE (Research and Innovation Centre for Energy).

Catherine BRUN has been General Secretary - Head of the Strategy, Public Affairs and Territories Domain since 1 September 2018.

She graduated from the National School of Statistics and Economic Administration (ENSAE) and joined the Gaz de France group in 1987.

She has held a variety of positions in the area of pricing studies in Gaz de France's Commercial Division before joining the Ile de France Region's Transport Production Division as Head of the Commercial Department.

In 1999, she introduced, the position of Marketing Manager for the Large European Accounts sector within the Gaz de France Trading Division. She became the Information Systems and Quality Manager of the Gas & LNG Global Branch in 2007.

She has also appointed the Information Systems Manager of GDF SUEZ's International Exploration and Production subsidiary on 1 January 2012.
On 1 September 2014, she was appointed as GRTgaz’s Marketing and Sales Director.

As of 1 September 2018, she also holds the position of Head of the Strategy, Public Affairs and Territories Domain.

Pierre Cotin started his career at Gaz de France’s Treasury Department in 1992. He then moved to the Gas Supply Division, in charge of negotiations with Norwegian and Dutch producers, before heading the commercial dispatching department.

In 2005 he was seconded to SPE-Luminus, which was then the #2 power producer and power and gas supplier in Belgium, where he was Corporate Director Trading & Supply.

He returned to France as Deputy CFO of GRTgaz and then participated in the creation of Elengy in early 2009. He was Chief Strategy Development and Marketing Officer for Elengy until August 2008.
Pierre Cotin has qualifications in engineering and economics.

Anthony Mazzenga has been Director of Development since 1 January 2023

A civil engineer with a degree from Mines ParisTech, he joined Gaz de France's Research Department in 2005 and held various positions in the residential and tertiary sectors before joining GRDF in 2009 as an analyst, then Manager of the strategy team.

In 2016, Anthony Mazzenga became Advisor to the Deputy CEO of ENGIE Group, in charge of supervising the gas infrastructure scope and the China Business Unit, then, in 2017, became Head of Development for the ENGIE-EDPR-Eon consortium on the Dunkirk offshore wind power call for tenders.

He became part of GRTgaz in November 2018 as Director of the Renewable Gas Programme, before becoming Director of Hydrogen & Renewable Gas from July 2021.

Anthony Mazzenga is a founding member of GRTgaz’s LGBT+ & Allié×e×s network and as such was recognised as a Role Model by the association l'Autre Cercle in 2021.

Sandrine Meunier holds a PhD in Chemistry from the Université Blaise Pascal (Clermont-Ferrand). She began her career in 1999 in the Gaz de France Research Department, where she held the successive positions of Gas Quality Engineer, “Biogas” Project Manager, and Head of the Procedures, Operational Safety and Maintenance Division.

In 2009, she joined GRDF as Gas Operations Delegate responsible for the operation and maintenance of the distribution network for Île-de-France Ouest. In 2013, she was appointed to the GRTgaz Technical Services Department as Active Networks and Ancillary Facilities Manager. In 2017, she took on the coordination of the Trans’HYtion project to research hydrogen development at GRTgaz and the necessary technical modifications to gas facilities. In 2018, she joined the GRTgaz IS Department as Deputy Director. In December 2019, she was appointed Director of GRTgaz’s R&D department, RICE (Research & Innovation Center for Energy).

On 1 May 2021, she replaced Olivier Edmont at the Operations Department, who moved into the role of Transformation and Performance Director.

Hervé Rambaud began his career at EDF GDF Services in 1982.

After being employed in various jobs in the accounting and financial sector, he became Head of the Department of Human Resources, Management and Logistics for EDF-GDF Services in the Southern Champagne region before taking on the same role at EDF-GDF Services Asnières in 1997. In 1999, he was appointed Head of EDF-GDF Services’ Human Resources Department.

In 2001, Hervé Rambaud joined Gaz de France’s Transport Department, where he was Deputy Head then Head of the Staff and Social Relations Operation until 2004. From 2005, he was appointed Head of the Human Resources and Communication Operations as well as the Central Services Unit within GDF SUEZ’s Large Infrastructures Department.
In 2009, Hervé Rambaud was appointed General Secretary at the Elengy Company.
Since February 2018, Hervé Rambaud has been a member of the Electric and Gas Industries Social Committee.

In 2009, he was appointed Secretary General at Elengy, before joining GRTgaz as Director of Human Resources in November 2013.

Since February 2018, Hervé Rambaud has been a member of the Electric and Gas Industries Social Committee.

Hervé Constant joined EDF GDF Services in 1990 where he held a variety of positions in Paris as a project manager and operations manager for electricity and gas networks.

In 1999, he joined Gaz de France’s Supply Department, then the Trading Division to manage long-term gas purchasing contracts (Egyptian and Algerian LNG, etc.), before becoming Head of HR for the Trading Division.
In 2007, he joined the IT teams of the Infrastructure Branch of GDF Suez in charge of the IT of the subsidiaries GRTgaz, Elengy and Storengy.

In 2011, he joined GRTgaz to open and manage the IT Department (in accordance with the Energy Code, unembedding GRTgaz’s IT from that of ENGIE to make GRTgaz autonomous and independent).

Since then, the IT Department has been operating, maintaining, upgrading and ensuring the security of industrial and tertiary IS in collaboration with GRTgaz's business units. The IT Department contributes to their digitalisation to enable operational performance.