  This paper describes the design, implementation, and testing of a wireless
sensor and actuator network for monitoring the energy use of electric
appliances in a home environment. The network includes energy measurement nodes
and a central server, where the nodes read the energy use of connected
appliance, and wirelessly report their readings to the central server for
processing. The server displays the readings from these nodes via a user visual
interface in real time. Through this system, users can easily understand their
electricity usage patterns and adapt their behavior to reduce their energy
consumption and costs. Moreover, users are able to remotely power on/off
individual devices to actively control the power use of certain appliances. The
system allows for inexpensive monitoring of home energy use and illustrates a
practical way to control the energy consumption through user interaction.
