As the carbon dioxide emission and global warming become the world serious issues, many researches are performed to reduce the energy consumption. Therefore, there are many new devices for energy saving scheme in the smart home area, such as smart plug, AMI, and IHD. Using them, users can recognize and reduce the amount of energy consumption, and the appliances can be controlled considering the energy efficiency. In this paper, we propose a home energy management system for an energy-efficient smart home. First, the data of energy consumption for a smart home is collected and analyzed. And energy conservation measures are generated and performed while maintaining comfort of users. Using these methods, energy management services for smart homes can be provided more easily and efficiently.