Paris
Geoffroy advises on public contracts, particularly in the context of concessions and PPPs. He has been involved in projects relating to the financing, construction and operation of the Stade Vélodrome in Marseille; the Sud Europe Atlantique high-speed line; the Athletes' Village for the Paris 2024 Olympic Games; the Grand Paris Express and the offshore extension of the Principality of Monaco. He has also worked on several French highway (A412, A69, RCEA, A88, A41, A150), port (Calais, Cannes) and airport projects (Nice, Lyon, Beauvais).
In the renewables field, he acts alongside the French government (Ministry of Energy Transition) in calls for tenders for the construction of offshore wind farms, including floating wind turbines, and advises operators in the realization of biomass and geothermal projects, as well as investors in the context of "M&A" operations concerning wind and solar assets and methanization. He also has experience in hydroelectricity matters. He advises both sponsors and lenders and works regularly with public entities and governments. He also advises on the drafting and negotiation of corporate PPAs, acting for both energy producers and buyers.
Geoffroy Berthon is recognized by clients as "talented, dynamic and brilliant lawyer. He is a hard worker. His calm manner and attentiveness reassure as a client" (Legal 500) and as a Leading Partner by Legal 500 (EMEA 2025) in public law and energy.
Geoffroy holds a doctorate in public law, was a lecturer in public contract law at Sciences Po, and frequently published in both English and French.