Data driven process for the energy assessment of building envelope retrofits Roberto Garay-Martinez, Beñat Arregi, Mikel Lumbreras, Belén Zurro, Jose Manuel Gonzalez and Jose Luis Hernandez E3S Web Conf., 172 (2020) 25001 Published online: 30 June 2020 DOI: 10.1051/e3sconf/202017225001