Energy efficiency plays a vital role in the design of protocols for the applications in networks to enhance the network lifetime. Since the networks nodes are battery-powered, thus energy or battery power is a precious resource that has to be carefully used by the nodes in order to avoid an early network failure. In Mobile Ad Hoc Networks researcher has focused on various energy parameters through managing transmission and distribution of loads by limiting the dynamic energy for communication required to send or receive packets. Many researchers suggested, to attain efficient power conservation dual approach may be combined and power usage can be limited by making mobile nodes in-active. In this paper we present a comparative analysis based on review study and have a closer look at some protocols, energy saving techniques and methods adopted in saving power for MANET.