Acknowledgements This Technical Report was researched and written by Ziqin Sang (Fiberhome Technologies Group), Zhen Luo (Fiberhome Technologies Group) and Michael Mulquin (IS Communications Ltd) as a contribution to ITU‐T Focus Group on Smart Sustainable Cities (FG‐SSC). The authors wish to extend their gratitude to Flavio Cucchietti (Telecom Italia), Jinghua Min (China Electronic Cyberspace Great Wall Co., Ltd) and Francesco Dadaglio (International Organization for Standardization) for their valuable inputs and support. The authors acknowledge the guidance and support from all the members of the ITU‐T Focus Group on Smart Sustainable Cities (FG‐SSC) Management Team. Additional information and materials relating to this report can be found at: www.itu.int/itu‐t/climatechange. If you would like to provide any additional information, please contact Cristina Bueti at tsbsg5@itu.int.