The energy sector accounts for about three-quarters of today’s greenhouse gas emissions and is crucial to supporting the global economic system. Energy transition is therefore essential to achieve net zero emissions. For this goal to be achieved, it is necessary to reduce energy-related CO2 emissions and improve energy efficiency and renewable energy with the innovative tool of technology, policy frameworks and market instruments. The 2023 Global Smart Solution Report includes 11 smart city cases. Among them, 8 are related to energy transition, and 3 are recommended by the partner Go SMART, showing the smart application of the city. Most of the cities in this report are located in Asia: even though they are geographically close, each city faces different development problems.