Abstract: Wireless sensor network contains the huge number of power constrained sensors, which collect data from other sensors and transmit them towards the base station in a manageable manner. Sensing and transmitting data require high energy. Energy saving is a great challenge in wireless sensor network. Clustering techniques are use to reduce the energy consumption in wireless sensor network. Here we discuss some clustering techniques for heterogeneous and homogeneous wireless sensor network.

Keywords: Energy Consumption, Clustering, Wireless network, Heterogeneous, Homogeneous environment.