Our project
CALOGENA IS A SUBSIDIARY OF THE FAMILY-OWNED INDUSTRIAL GROUP GORGE
“With almost two decades of experience in the nuclear sector, our Group is delighted to be strengthening its contribution to the green transition and the development of a strong national industry.”
Raphaël Gorgé
CEO of GORGÉ SAS
A project supported by GORGÉ
Calogena benefits from the dual expertise of the GORGÉ group and the team of twelve people who developed the concept. The project has been launched in 2021 by a team comprising expert advisers from NucAdvisor, all of whom have held senior positions in flagship companies in the French and European nuclear ecosystem.
In addition, the GORGÉ group is contributing its expertise in industrial deployment. GORGÉ is a diversified industrial group specialising in high-tech businesses.
The GORGÉ group has been active in the nuclear sector since 2007. Nearly 300 employees are involved in industrial and engineering activities within two companies developed by the group. The SERES TECHNOLOGIES subsidiary has expertise in nuclear mechanical design, operating safety, nuclear safety and security as well as ergonomics. The BAUMERT subsidiary designs and manufactures technical doors for the protection of nuclear sites.
WINNER OF FRANCE 2030 AND THE EUROPEAN SMR ALLIANCE, CALOGENA HAS OPENED A SUBSIDIARY IN FINLAND
Calogena has been selected as the winner of the “Innovative Nuclear Reactors” call for projects supported by Bpifrance as part of the France 2030 programme.
Through its transnational CityHeat project, Calogena is also one of only two French projects supported by the SMR industrial alliance launched by the European Commission.
The company, based in Paris, is mainly developed in Aix on its technical platform. Calogena opened its subsidiary in Finland in 2025: the country is at the forefront of nuclear district heating.
A solid industrial group
The group and its subsidiaries, two of which are listed on the stock exchange, generate revenues of 500 million euros and employ 3,300 people. GORGÉ SAS has a strong track record of creating and developing industrial technological companies.
For example, Prodways Group, founded in 2013 by Raphaël Gorgé in the 3D printing sector, has become a European leader in the sector. The company now has 460 employees and revenues of €80 million.
In recent years, the group has also built up a French technological champion in the field of navigation systems and maritime robotics, with EXAIL. This company generates revenues of nearly 300 million euros in 80 countries.
JULIEN DEREUX, CEO OF CALOGENA
JULIEN JOINED CALOGENA AFTER A CAREER AT EDF AND IN STRATEGY CONSULTING
“Low-temperature heating accounts for 1/3 of final energy needs in Europe, and 70% of it is produced by fossil fuels. The urgent need is to offer a simple, mature product to support the growth and decarbonisation of heating networks”.
Out team
Our teams are based in Aix-en-Provence, Paris and Helsinki
Raphaël
Gorgé
Chairman
Julien
Dereux
CEO
Xavier
Bravo
CTO
Tor
Stendahl
General manager Nordics
Nicolas
Aplincourt
Civil engineering architect
Guy
Willermoz
Head of reactor physics modeling and simulation
Sophia
Gautier
Fluid system & HVAC architect
Pierre-Yves
Lager
Layout & integration architect
Thibault
Alleg
Head of licensing
César
Dulac
External relations manager
Matéo
Sochala
Business developpement and strategy manager
Jaakko
Pullinen
Technical director for Finland
Yvann
Hosatte
Mechanical adviser
Pierre
Santini
Digital model design architect
Anne
Montoya
PMO
Marien
Barral
Multi-physics calculation engineer
Gaël
Martinez
Mechanical designer
Damien
Bisson
Electrical and automation advisor
Adrien
Sellé
PMO support and operations
Pierre-Nicolas
Houot
Mechanical design engineer
Max
Sonzogni
Multi-physics calculation engineer
Sylvain
Testylier
Safety mission pilot
Nicolas
Vittet
Office manager
Loïc
Le Berre
CFO (Gorgé SA)
Guillaume
Deraisme
Board member
Céline
Leroy
Legal director (Gorgé SA)
Hugo
Soussan
Head of Institutional Communications (Gorgé SA)
Anissa
Ouadah
Executive Assistant
Tristan
Suzanne
Multi-physics calculation engineer
Sandrine
Mariller
Project Budget and Planning Manager
Lucas
FIlipuzzi
Projector
Scientific Council
Calogena benefits from the contribution of a group of twelve experts who contribute their technical knowledge and experience in the main French and international reactor development projects.
Alain
Vallée
Former Group Technical Director at Framatome, then Director of nuclear activities at the CEA’s Saclay centre; he contributed to or directed the design of the 1300 MWe, 1450 MWe and then EPR reactors.
Dominique
Vignon
A former Chairman and CEO of Framatome, he was involved in the planning, design and construction of numerous nuclear power plants, including the EPR.
Jan
Bartak
Former head of nuclear development at ENGIE. Expert in the development of new nuclear power plant projects.
Hervé
Bernard
Former Deputy Director General of the CEA. Expert in risk management and nuclear fuels
Jacques
Chenais
Former Director of the Engineering Department at TechnicAtome, then Head of SMR at CEA
Giovanni
Bruna
Former IRSN Scientific Director and member of the IRSN Staff Committee. Expert in reactor design, safety and operation.
Noël
Camarcat
Former special advisor for nuclear R&D and international issues at EDF’s Nuclear Engineering and New Projects Division. Fuel cycle expert.
Michel
Debes
Former manager at EDF in the fields of operation, maintenance and safety of nuclear power plants and the nuclear fuel cycle
Gérald
Ouzounian
Former Scientific and International Director of ANDRA. Expert in heating networks and nuclear waste management.
Philippe
Malouines
Former Chairman of the AFCEN RCC-M sub-committee. Expert in nuclear pressure equipment
Gérard
Cognet
Former researcher at the CEA. Expert in thermal-hydraulics and nuclear safety
Jean-Philippe
Girard
Former researcher at the CEA. IAEA expert
Safety culture at Calogena: A collective commitment, every day
At Calogena, nuclear safety is at the heart of our priorities. It is more than just rules and procedures. It is a mindset and culture of vigilance that has guided every decision since the Calogena project started in 2023. The Calogena modules will be installed in urban areas: intrinsic safety is the fundamental requirement of the concept.
From the outset of the conceptual design phase, we have made safety a key focus of our development, in line with the recommendations of international guides (IAEA, WANO). It directs our design, technical decisions, and organization. Since the conceptual design phase, we have engaged discussion with the safety authorities in France and Finland. We also conduct regular technical reviews with external safety experts to challenge us and continuously improve our standards.
Safety culture has been integral to our major milestones and will be for future stages, reflecting our collective responsibility.
To achieve this goal:
A Quality & Safety Advisor has been assigned to support the team, provide guidance, and notify if required, with direct access to the CEO.
Awareness-raising initiatives have been launched among Calogena employees to ensure that everyone understands the meaning, scope and necessity of this safety culture.
We regularly remind our strong conviction: safety is not the responsibility of a few. It is the responsibility of everyone.
Safety concerns us all. Calogena SMR isn’t just an innovative reactor. It is a promise of safe, controlled, sustainable energy. This promise can be kept only if everyone – engineer, technician, manager, partner – plays an active role in safety at every moment.
Calogena’s policy prioritizes safety, security, health, and environmental protection. This means prioritizing accident prevention and impact mitigation before economic or industrial gains from operations.
Calogena undertakes to continuously improve the measures taken to protect the above-mentioned interests.
