Wireless Sensor Network (WSN) is a type of intelligent wireless network composed by tens to thousands of nodes. WSN can communicate each other as well as to modify the configuration by itself. In their communication process, WSN needs energy to forward some data packet. Energy of WSN is limited with batteries are not rechargeable. Energy efficiency is an interest case to be analyzed more on WSN. Obviously, With reduce cost of routing process we can save energy on WSN. In this paper, we analyze energy consumption of WSN and routing packet overhead on routing protocol based single path AODV and multipath AOMDV over SMAC in order to find out the most energy efficient between both. By performing simulation with Network Simulator NS-2, the study found that AOMDV perform better in terms of energy efficiency in among intermediate node but overal wasteful of energy with average large number of routing packet overhead compare to AODV.