Secretary General, Gas Infrastructure Europe
As Head of Public Affairs for Europe at Air Products, Lucie Boost led a team responsible for European and national energy affairs, focusing on key markets such as the UK, the Netherlands, Germany, and Spain. Her expertise encompasses hydrogen, the integrated energy market, and CCUS, aligning perfectly with GIE’s strategic priorities.
Prior to joining Air Products in January 2023, Lucie spent 13 years at Equinor, where she held various leadership positions in natural gas sales, regulatory affairs, and public affairs. During her tenure at Equinor, she gained extensive experience in gas regulation, hydrogen, and CCS, representing the company in esteemed organisations such as Eurogas, the European Federation of Energy Traders, the International Association of Oil & Gas Producers, the Zero Emissions Platform, and Hydrogen Europe.
Lucie holds a Licence degree in Political Science and International Relations from the Vrije Universiteit Brussels and is proficient in Dutch, English, and French.
Tobias Bühnen
Policy Manager
Policy Manager
Since February 2021, Tobias Bühnen has been working as a Policy Advisor in the Hydrogen Area within GIE, focusing on the current and future role of gas infrastructure operators in contributing to the REPower EU and EU Green Deal targets. In addition, he also works on topics related to Sector-Coupling and CCUS.
Before joining GIE, he worked on European affairs within the Regulatory & Public Affairs Department of the German Gas Transmission System Operator ONTRAS.
Tobias holds a Master’s degree in European Studies from Maastricht University and a Bachelor’s degree in Economics from the University of Cologne.
Claudia Santiago Mañe
Senior Policy Advisor
Senior Policy Advisor
Claudia joined GIE in January 2025 as a Senior Policy Advisor for the Gas LNG Europe column (GLE). Her work focuses on highlighting the key role that LNG terminals play in achieving climate targets; she also leads policy work related to biomethane and its contribution to decarbonizing the gas system.
Before joining GIE, Claudia worked at a public affairs consultancy in Brussels specializing in EU climate and energy policy, advising clients across the energy sector on legislative and regulatory developments.
Claudia holds a master’s degree in European and International Public Policy from the London School of Economics and a Bachelor’s degree in International Relations from King’s College London.
Anne-Elisabeth Granier
Senior Policy Advisor
Senior Policy Advisor
Anne-Elisabeth Granier joined GIE in 2026 as Senior Policy advisor, to work closely with the GSE column and on Security of Supply related issues.
She has more than 20 years of experience in EU gas market regulation and advocacy, mainly within the EDF Group: at EDF SA in Paris, Edison in Milan and EDF Trading in London. She contributed to the design and coordination of corporate regulatory positions and represented them before European and national regulatory authorities.
She has also held leading roles in major European energy associations, including Eurogas, Eurelectic and Energy Traders Europe.
More recent focus includes gas storage, security of supply, methane emissions regulation, and Russian gas phase-out.
Anne-Elisabeth holds an engineering degree from Télécom ParisTech and a Global Executive MBA from SDA Bocconi School of Management.
Alexis Kontoghiannis
Policy Advisor
Policy Advisor
Since October 2024, Alexis Kontoghiannis has been a Policy Advisor at GIE, working across EU energy and infrastructure policy, including LNG, gas storage and hydrogen. His current portfolio focuses in particular on the development of the EU regulatory framework for CO₂ transport and storage infrastructure and the role of infrastructure in enabling the deployment of CCUS in Europe. He also contributes to cross-cutting initiatives supporting the development and integration of Europe’s energy infrastructure.
Before joining GIE, Alexis worked in the chemical industry and subsequently on energy and sustainability policy at the European Commission and in consultancy.
Alexis holds an Executive Master’s degree in European Studies from the College of Europe, a Master’s degree in Environmental Studies from Sciences Po Paris, and a Chemical Engineering degree from the National Chemistry Graduate School of Montpellier.
Bogdan Simion
Data Analytics Manager
Data Analytics Manager
Bogdan has more than 15 years of experience in the gas, oil and power industry.
He has been working for GIE since 2018, responsible for Data Analytics, Gas Transmission Europe and System Operation and Development Area, covering subjects like Security of Supply, Methane Emissions Management, Transparency and Digitalisation.
Backed by a Bachelor of Science (BS) in Physics from Iasi University and an Energy MBA from the Bucharest University of Economic Studies, Bogdan has previously worked for OMV Petrom as Business Developer and Project Manager in the Gas and Power Division, Gas Logistics, as well as Project Manager in M&A department.
Carlos Buatas
Communications Manager
Communications Manager
Since July 2025, Carlos has been working as Communications Manager at GIE.
Carlos has a decade of experience in corporate communications, policy communications and crisis communications, having worked across a wide range of industries in leading consultancies and at a trade association in the energy sector.
David Defour
Chief Technology Officer
Chief Technology Officer
As CTO, David is in charge of GIE’s REMIT reporting by gas infrastructure operators towards ACER, the European Union Agency for the Cooperation of Energy Regulators. He also manages GIE’s Transparency Platforms and Inside Information Platform for Urgent Market Messaging (UMM). Covering both regulatory and technical aspects, this is further expanded with several data usage publications such as gas infrastructure maps and data reporting tools which are well recognised within the industry.
David has been with GIE since its inception in 2001. Prior to his activities within the gas infrastructure industry, he has worked for Unilever (1996-2000) as well as the maritime sector (Cast Terminal Europe, Zeebrugge and Ghent Port Authority) and several other dedicated IT projects.
David holds a Master in applied economics with international business specialization (University of Leuven, VLEKHO Business School, Campus Brussels) since 1994 and a PostGraduate in Maritime Sciences since 1995 (University of Ghent, Law department), focussed on port operations.
Daan van Soelen
Researcher
Margaux Reynders
Communications Officer
Communications Officer
Margaux joined GIE in November 2026 as a Communication Officer, bringing experience in communications, event coordination and media relations.
Prior to joining GIE, she worked as a Communication Officer at a European association specialising in corporate governance, where she was responsible for a range of communication and administrative activities, including digital communications, content production and the coordination of events and meetings. She also has experience in project management across different sectors and organisations, contributing to communication strategies, stakeholder engagement and the delivery of events and projects.
Margaux holds a Master’s degree in New Media and Digital Culture from the University of Amsterdam and a Bachelor’s degree in Communication and Media from Erasmus University Rotterdam.
Griselda Sosa
Office Manager
Office Manager
Griselda Sosa supports the GIE Secretariat as Office Manager, ensuring smooth operations and efficient coordination across the team. She specializes in managing schedules, organizing meetings, and overseeing day-to-day office activities. Griselda excels in dynamic, multicultural environments and is dedicated to delivering exceptional support. She is fluent in Spanish, English, and French.
