CFG instrumentation: the MIC Sensor (France, 2011). © CFG Services - C. Lecoutre

CFG (French Geothermal Company)

CFG (French Geothermal Company), a BRGM subsidiary, is an engineering company specialising in industrial geothermal applications for heat and power production in France and elsewhere.

CFG logo

CFG (French Geothermal Company), a services and engineering company 100% owned by BRGM, specialises in:

  • medium and high-enthalpy geothermal applications for power production (or refrigeration),
  • low and medium-enthalpy geothermal applications for heat production and air conditionin,
  • corrosion engineering for geothermal applications, industrial microbiology and leak detection in below-ground networks.

Main clients

CFG's main clients are:

  • local government bodies (municipalities, semi-public companies),
  • energy sector industries, particularly in urban heating, water and chemicals.

CFG activity sectors

CFG offers the following products and services:

  • Engineering compliance studies (feasibility, geothermal potential, prospecting licences, operating licence applications, drilling permits, operating licence renewals, impact studies);
  • Project engineering (management assistance for geothermal projects, securing finance, legal and financial project structure, rehabilitation);
  • Geothermal plant maintenance, operations and monitoring;
  • Drilling engineering (design principles, completion, works supervision, instrumentation, rehabilitation);
  • Geological, hydrogeological and hydrochemical studies, reservoir modelling;
  • Studies, expert assessments and advisory services on corrosion, industrial microbiology and environmental issues;
  • Leakproofing inspections and leak detection in below-ground pipes, by helium tracing or direct soil gas analysis.
  • Sales of corrosion monitoring and treatment products:
    • CFG Mic Sensor®: sensor for biocorrosion monitoring developed and patented by CFG Services;
    • TCTFP (continuous well-bottom treatment tube) to inject treatment chemicals into production wells;
    • Labège Kit: a culture medium manufactured in our laboratory for counts of sulphate-reducing and thiosulphate-reducing bacteria;
    • Treatment products (anti-corrosion, anti-deposit, bactericides): treatment dosing and sale of treatment products.


3 avenue Claude-Guillemin BP 36009
45060 Orléans Cedex 02

Tel. : +33 (0)2 38 64 31 22
Fax : +33 (0)2 38 64 32 83

More information about CFG

CFG: key facts and figures

Chairman: Georges Picard
Managing Director: Eric Lasne
2017 turnover: 3.9 M €
SAGEOS holding (BRGM Group): 100 %
Payroll: 28 people

BRGM - 3 avenue Claude-Guillemin - BP 36009 45060 Orléans Cedex 2 - France Tel.: +33 (0)2 38 64 34 34