1. School of Technology and InnovationsUniversity of Vaasa65200VaasaFinland
2. Faculty of Engineering of the University of Porto, and INESC TEC4200‐465PortoPortugal
3. ENEA – Italian National Agency for New Technologies, Energy and Sustainable Economic Development – CR Portici80055PorticiItaly
4. Department of Management & Innovation SystemsUniversity of SalernoFisciano (SA)84084SalernoItaly