This paper presents a prototype application for residential energy monitoring using a digital energy meter coupled with a wireless sensor. The current measuring meter is designed to be placed in-line with household appliances. The data are then sent using a wireless sensor node to a low cost server. The system allows end users to measure energy expenditure and visualize the data in real time with a forward prediction of cost for running the appliance. The system is an enabling technology for a global architecture of dynamic electricity pricing schemes and load reduction programs, called Demand Response. The new system allows residents to become self aware about power consumption levels in their home and enables users to make informed decisions about demand response events.

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