Currently, ICT (Information & Communication Technology), IoT (Internet of Things), Smart Grid and Micro Grid technologies are seen as the technologies that will dominate the IT industry of the Republic of Korea till 2020. There are communication technologies such as Mobile WiMAX, PLC, Zigbee, NFC, ANT, Mobile Wi-Fi, Bluetooth, RFID applicable for Smart Grids but we are proposing a Mobile WiMAX-based Micro Grid Home network system in this paper. As a result of simulation, we were able to confirm that the propose system worked normally. The platform technology used in this study can be used for the Smart Grids and Micro grids, as well as other IoT-applied fields. Also, many other simulations in relation to healthcare, building and facility management, disaster and accident monitoring, weather observation and other areas can be conducted using this platform technology prior to constructing an actual system to save costs by checking system’s feasibility.