Abstract: Wireless sensor networks are progressively arranged to contrast with complicated functions in networking process may desire the battery capacity of sensors to increase the efficient network lifetime especially in heterogeneous settings. Clustered techniques have been engaged to raise the energy efficiency in this energy constrained of wireless sensor networks. There are many issues that associated to WSNs. These problems related to energy efficiency performance, reliability, installation, cost and also on hardware cost. In this paper we use LEACH and SEP protocols for energy conservation and figure out all the problems occur in LEACH and SEP. We designed a LEACH SEP HETEROGENEITY MODEL for energy conservation.