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Wireless Sensor Networks (WSN) consist of spatially distributed sensor to monitor physical or environmental conditions and cooperatively pass their data to a central location. Such networks become importance due to its potential to transform many segments of our life from ecological monitoring and maintenance to computerization in traffic surveillance and healthcare commerce. The design, implementation and operation of a sensor network requires the assemblage of various disciplines including embedded systems, hardware, networking, information management and distributed algorithms. Most applications of WSNs require deployment in unattended remote locations. Therefore, power awareness is fundamental to data dissemination and routing in a WSN. In this paper, we focus on consumption of power by each node.