Éric Claude Gaucher, born in November 1970, is a French geochemist with an international reputation in the field of geo-energy and geological storage.

[1] In 1998, under the direction of professor of water chemistry, Gil Michard, Éric Gaucher published a thesis on the water-clays interaction for the CEA and the University of Paris-Diderot.

[3] There he led a research unit working in particular on the stability of clay formations for the management of radioactive waste and the geological storage of carbon dioxide .

In 2012, he joined TotalEnergies, where his work focuses on water-rock-gas interactions from of a laboratory to geological basin scale using experimental, field and numerical modeling methods.

[11] His research on native hydrogen encouraged him to believe that industrial exploitation of this energy resource was possible, and declared in 2023 that he hoped that investors would take the initiative to launch exploration projects.