Preliminary study of utilizing Internet of Things for monitoring energy use in building to support energy audit process

Energy conservation in building especially for electricity energy can be conducted by implementing energy audit. Energy audit has objective not only for saving energy use but also reducing CO2 emission. Energy audit also can analyze energy consumption intensity and identify energy saving opportunities. However process of energy audit does not take a short time, because initially it must be done by some procedures e.g. survey of energy management and detail survey of energy. The process time can be minimalized by utilizing Internet of Things (IoT) to collect data of energy use in every electric appliances and integrating the information system of electronic energy audit to analyze energy use of building. This paper proposes the preliminary study of IoT combined with Wireless Sensor Network to support traditional energy audit process. Energy use data is monitored and collected in real time by IoT. Generally electronic appliances are located in several places, thus the data transmission from energy monitoring system uses wireless communication instead of wire communication. Every wireless IoT is sensor node in wireless sensor network that sends data to gateway/broker then finally send to server. The electronic energy audit is installed in this server to record data from every sensor node in real time and analyze energy saving opportunity.