A natural ochre quarry (Roussillon, S France, 2011). © BRGM - Marc Urvois

BRGM Group

BRGM, the French geological survey, has subsidiaries and holdings in several fields of activity.

BRGM is France’s public reference institution for Earth Science applications. It has subsidiaries and holdings in several fields of activity:

The BRGM group

BRGM Group structure as of 31 December 2015

BRGM Group structure as of 31 December 2015. BRGM subsidiaries and holdings are grouped into three holding companies:  SAGEOS (engineering and geothermal energy), SERGAP (instruments) and BRGM SA (residual BRGM assets and liabilities in the mining sector). © BRGM

BRGM subsidiaries

CFG Services

CFG Services, a 100% BRGM subsidiary, is an engineering firm specialising in geothermal applications for heat production (low-enthalpy) and power production (high-enthalpy).

More information about CFG Services

IRIS Instruments

Logo IRIS Instruments


IRIS Instruments specialises in geophysical instrumentation for subsurface explorations and monitoring. Applications: hydrogeology, geotechnology, environment and mineral exploration. The BRGM participation in IRIS Instruments is 51%.

More information about IRIS Instruments

Géothermie Bouillante

Géothermie Bouillante specialises in developing power supplies from geothermal energy in Guadeloupe and the Caribbean region as a whole. BRGM has a minority stake in Geothermal Bouillante (20.36%).

More information about Géothermie Bouillante


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