Abstract
Various Smart City projects have been carried out all over the world. However, the cases achieving both the environmental and economic improvements are quite rare and most of the projects cannot continue without the subsidies from their governments. Besides, most of the projects focus on a single zoning area, and Smart Grid application corresponding to the zoning characteristics has not been common. Therefore, we evaluated the environmental and economic improvements driven by the Smart Grid application to the combined zoning areas. The district consisting of residential and commercial areas was assumed. The electricity demand was estimated and the cost and CO2 reduction were also calculated. The results showed that the CO2 reduction by solar panels is large but the investment cost cannot be recovered in the residential district, while CO2 reduction is smaller but the cost can be recovered in the commercial district. Hence, it was concluded that the Smart Grid application considering the combination of different zoning areas can be effective.
