“In November 2013, I discovered in Okinawa the only working seawater-based STEP in the world. Upon my return, I gathered a team of researchers and engineers, convinced that the deployment of this solution makes sense in my island, Corsica. Finally, after two years of consultations with a large number of actors in the energy field, the idea is moving towards the development of solar micro-STEP. The project becomes a reality in 2016 with the creation of STEPSol: it’s the beginning of our history”

Didier Pierrat-Agostini, founder and president of STEPSol


The complementary of our associates is our greatest strength. It has allowed the development of technical expertise but also regulatory, legal, commercial and financial skills.


Above all, we value the spirit of initiative, creativity and transversality of skills.



Didier PIERRAT-AGOSTINI Master DAUPHINE, Master MAI Kedge Business School Director of the Franco-Japanese Center President of STEPSol Philippe Malbranche Ecole Centrale Paris, Engineer CEA, General Director of INES Juliana Espinosa-Lopez ENA Georges Clemenceau Class Master Panthéon La Sorbonne MIB Universidad EAFIT, Colombia French CCI in Colombia Fabrice Juquois Polytech Nantes Ademe Expert, Energy responsible in AFD Tina Le Mao Grenoble INP, Ense3 Electrical engineering PhD Engineer