PURPOSE: A system for managing a real time energy through monitoring is provided to monitor energy which consumed in a building according to a user by synchronizing each sensor, thereby most effectively managing the energy. CONSTITUTION: An energy management system comprises next. A data processing server(110) receives data collected in a data collection device. The data processing server processes the received data as data requesting energy management. A web server(130) provides the processed data to a user through a predetermined web browser type.
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