Rafael Ortiz is back from his predoctoral research stay at the Institut für Energie- und Klimaforschung, IEK-3: Technoökonomische Systemanalyse“ of the Research Centre «Forschungszentrum Jülich GmbH”, in Germany. During this period (November 1st, 2019 to January 31st, 2020) he has been working in energy systems modelling for the estimation of hydrogen regeneration in the Atlantic area by using renewable energies, under the supervision of Martin Robinius and Heidi Heinrichs.