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In this paper different power optimization techniques for wireless sensor network is proposed and compared. The
energy conservation in a wireless sensor network is of great significance and very essential. The nodes in a wireless environment are
subject to less transmission capabilities and limited battery resources. There are several issues that constrain the WSNs and challenges
posed by the environment of handling traffic and the lifetime of the battery in the nodes. The battery of node is energy limited and is
not convenient to be replaced by the restriction of circumstance. But we have to ensure that even the slightest of energy is utilized and
the overall power conserved in a wireless environment is greatly reduced. This paper aims to reduce the power conservation in a
wireless sensor network using Dijkstra‘s algorithm, with a set of optimal path and available idle nodes.