1. Department of Mechanical Engineering, Aalto University, Espoo, Finland
2. Hemsö Fastighets AB, Helsinki, Finland
3. Department Environmental Engineering, Hamburg University of Applied Sciences, Hamburg, Germany
4. Competence Center for Renewable Energy and Energy Efficiency (CC4E), Hamburg, Germany
5. Smart City Center of Excellence, TalTech, Tallinn, Estonia
6. College of Urban Construction, Nanjing Tech University, Nanjing, People’s Republic of China