Executive Committee chart

Composition of the Executive Committee chart

 Sandrine MEUNIER - Chief Executive Officer

Sandrine Meunier began her career in 1999 with Gaz de France’s Research Department.

In 2009, she joined GRDF as Chief of Operations for the Western Ile-de-France region.

In 2013, she joined the Technical Department of GRTgaz.

In 2017, she coordinated the Trans’HYtion project, designed to investigate options for developing a hydrogen sector in France.

In 2018, she was appointed Deputy Director of the Information System Department at GRTgaz.

In 2019, Sandrine Meunier was appointed R&D Director in charge of the RICE (Research and Innovation Centre for Energy) at GRTgaz.

In 2021, Sandrine Meunier was appointed Director of Operations for GRTgaz, tasked with managing major projects launched by the Operations Department, and in particular with adapting it to the corporate project, the aim being to transform GRTgaz and speed up development of the renewable gas and hydrogen sectors.

Sandrine Meunier is 52 and was awarded a PhD in Chemistry in 1999 from the Blaise Pascal University (Clermont-Ferrand).

 Pierre DUVIEUSART - 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.

 Benoît MIGNARD - Adjoint au Directeur Général, Responsable Domaine Finance, Achats, Logistique

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, technical director

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).

Adeline Duterque, secrétaire générale

Adeline Duterque is taking over management of GRTgaz’s General Secretariat.

Adeline Duterque began her career in 1992 with EDF-GDF Services, working as a branch manager.

From 1997 onwards, she had various marketing and development roles in a number of different Gaz de France business teams, before taking over as Director of Gaz de France’s Strategic Analyses in 2004.

In 2009, she joined GRDF as Development Director. 

In 2012, she joined ENGIE, working as a Senior Economist and Vice President in charge of Forward Planning. 

In 2019, she was appointed Director of ENGIE’s CRIGEN Lab – ENGIE's research centre dedicated to energy sources and new energies in towns and cities.

She had also served as Chairwoman of GRTgaz's Board of Directors since 2018.

Adeline Duterque is 55 years old and is a graduate of Paris business school HEC.

 Pierre COTIN - Commercial Director, Head of the Marketing 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, directeur de développement de GRTgaz - photo : Jean-Christophe Marmara

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, Chief Operating Officer

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 - Director of Human Resources

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, directeur du système d'information - photo : Laurent Vautrin (circus prod)

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.