The sustainable city, in my view, is the city that does not need any resource from the others. It can exist by theirown. For instance, the city has their own power source such as solar cells, wind turbines and crude oil. It is reallynice to have sustainable city in their own. As I can see, it will use a lot of technology to reduce the powerconsumption, that is, Internet of Things or IOT. Absolutely, data scientists can also reduce the consumption byfinding the particular problem in the city. Technology is the most powerful to solve every problem in every field.