Energy management system and control method therefor

An energy management system of the present invention can measure and integrate a power consumption amount of each device, can integrate and monitor regional total power consumption amounts, and allows energy to be effectively used by collecting, analyzing, storing and transmitting a use pattern, data and the like through the Internet of Things (IoT) between respective devices and completely and automatically cutting off and controlling the power to be wasted in a device when the device is not used. In addition, the energy management system remotely controls devices, and allows energy to be effectively managed through the minimization of power consumption by automatically and completely cutting off the power to be supplied to the devices when the devices are not used, and by cutting off the power to be supplied to the system when the power of all the devices connected to the system is cut off and when the system is in standby.