Jean Hercher-Pasteur is an engineer in International Agro-Development, ISTOM (2008). He began his professional life in the sector of renewable energies and energy efficiency. In 2012, he moved to Uruguay and continued in the line of renewable energies and energy efficiency. In 2016 he decides to return to the agronomic world and begins to develop the energy efficiency for the agricultural sector in Uruguay with energy engineering firm. In 2017, he receive a scholarship form ANII (Agencia Nacional de Investigacion and Innovación del Uruguay) after writing his thesis subject: “Defining an approach of agricultural productivity in terms of energy flow”. Since October 2017, he is part of the ELSA team to develop his research.