We are researching and developing the technologies to advance energy systems including various renewable energy sources with ICT technology. To achieve this, we research energy demand and generation prediction, energy system fault detection and prognostics, energy IoT device management, data collection and analysis, and energy system optimal autonomous operation technology. We are working on applying machine learning and artificial intelligence technology to the energy fields. Also, we are developing new services and business models using energy big data. We conducted the work of standardization of energy IoT for energy data collection and interworking with KEPCO and related organizations. And, we are working the standardization of demand-response service.