In this paper, the authors describe that power efficient clustering in wireless sensor networks is an important research area. Power efficient clustering is done in WSN to prolong the life of the network. In WSN, many algorithms are developed to save energy of sensor nodes and to increase the lifetime of the network. This paper provides information about the life of network when LEACH, EBCH and EACH algorithms are used. The simulation shows that a normal network can be maintained at minimum of 510 rounds in LEACH, 530 in EACH and 523 in EBCH. But, the network in LEACH has longer life as compare to EACH and EBCH.