Who we are
Geothermal energy as our DNA
CFG (Compagnie Française de Géothermie) Géothermal is an engineering and consulting company with expert knowledge in the fields of geothermal energy.
The energy transition is a major and global challenge, and at CFG Géothermal, we have been at the very heart of this transformation for several decades, using our expertise, experience and commitment to guide and support our clients with passion, conviction and ambition.
As a subsidiary of BRGM Invest (BRGM Group), and Beicip-Franlab (IFPEN Group), two major players in their fields of excellence, CFG Géothermal gathers multidisciplinary technical expertise in the geosciences, specifically focused on research, characterization and development of geothermal resources.

French geothermal company with an engineering office
Backed by 40 years of experience and expertise, CFG Géothermal is a pioneer in deep geothermal in France. We support our clients across the entire value chain:
- Consulting and expertise,
- Bases cases and feasibility studies,
- Project ownership assistance
- Design management,
- Construction management,
- Project engineering,
- Monitoring of operations,
- Geothermal facility maintenance.
CFG Géothermal also provides services and produces and commercializes products in the fields of corrosion, industrial microbiology and underground network leak detection.
CFG Géothermal works with a broad range of clients, from local authorities, semi-public and local public companies, to industrial groups and medium-sized firms.
Whatever the context, we bring the same expertise to the projects and tackle it with a pragmatic approach and a concern for performance.
With a focus on value creation, CFG Géothermal’s mission it to support clients and partners throughout the development and implementation of their projects.
CFG Géothermal stands as a valued partner to its stakeholders.
Find out more about our main geothermal activities
Our main activities cover a wide range of specialized services in the field of geothermal energy:
- In-depth technical studies: we carry out in-depth studies in geology, hydrogeology, hydrochemistry and reservoir modeling to assess the feasibility and geothermal potential of projects.
- Regulatory engineering: we manage all administrative and regulatory procedures, such as feasibility studies, permit applications, operating authorizations and environmental impact assessments.
- Project engineering: we provide expertise in project ownership and project management for geothermal projects, including sourcing financial aid, legal and financial arrangements, and rehabilitation of facilities.
- Drilling engineering: we supply complete solutions for geothermal drilling operations, including well design, completion, drilling supervision, instruments and well rehabilitation.
- Leak testing and leak detection: we use advanced methods such as helium tracing or direct soil gas analysis to ensure the integrity of buried pipelines.
- Specialized studies and consultancy: we offer expertise and consultancy services for corrosion industrial microbiology and the environment, to ensure the durability and performance of geothermal installations.
- Maintenance and operation: we ensure the maintenance, operation and continuous monitoring of geothermal power plants, to guarantee optimal operation and constant performance.
- Commercializing specialist products: we provide innovative products for corrosion monitoring and treatment, such as the Inhibitor Treatment Tube and the Labège Test Kit, as well as anti-corrosion, anti-deposit and bactericidal treatment products, adapted to the specific needs of each project.


Our values in geothermal energy
We have a strong commitment to geothermal energy, guided by a vision of sustainability and innovation. We are committed to using a source of renewable energy, thus contributing to the efforts against climate change through the production of clean, sustainable energy.
Integrating geothermal energy into the energy mix is central to our mission. We strive to streamline complex, straightforward projects using our skills and pragmatic approach, while building trust with our partners and clients.
We have an unwavering commitment to fairness and equal opportunity in human resources, as well as to listening to, understanding and solving our clients’ needs. We keep our promises, meet deadlines and preserve our independence with honesty and professionalism.
Through collective work and strategic partnerships, we secure every step we take to turn our clients’ projects into reality and innovate in the field of geothermal energy.