1. TEBE-IEEM Research Group, Energy Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
2. TEBE-IEEM Research Group, Interuniversity Department of Regional and Urban Studies and Planning, Politecnico di Torino, Viale Mattioli 39, Torino 10125, Italy