Abstract-Mobile Ad-Hoc Networks (MANETs) are a collection of energy constraint mobile nodes which forms a frame free network that does not need any centralized governance. The mobile nodes in MANETs are powered by some power sources usually a battery that cannot be recharged in many real life scenarios. The nodes in MANETs are responsible for routing the data in the network. Untied nodes in moveable particularly appointed systems indisputably depend on the dexterous utilization of their power source. This makes the power consumption in terms of power saving one of the most important aspects of MANET that must be taken into account. Several power-aware routing protocols have been proposed in this area to accomplish efficient utilization of energy in MANET. One of which is Efficient Power Aware Routing (EPAR) that prolongs lifespan of nodes in the network. The route that has nodes with highest power is selected by this protocol and the data packets are transmitted with minimum power usage. In this paper, we compare the performances of some of the energy aware routing protocols such as EPAR, MTPR and DSR based on parameters like throughput, delay, network life time and power consumption by varying multicast group size using extensive simulation.Keyword-DSR, EPAR, MTPR, MANET, Power Utilization I. INTRODUCTION MANET (Mobile Ad-Hoc Network) is a kind of network that makes use of radio waves for communication between nodes and allows them to have either direct or indirect wireless interaction. The infrastructure less property of MANETs gives the autonomous nodes the license to reorganize themselves in a kind of way. The nodes in these networks function as a host when it transmits data to other nodes in the network. On the other hand, a node behave as a router when it is an intermediary between two different communicating nodes that are out of one another's radio range which causes them to be incapable to communicate directly. Scenarios that have no static structures like emergency services, disaster management and rescue operations embed the application of mobile ad-hoc networks.In MANET, the route generation is dynamically required for the nodes which are currently active in the transmission of data. Hence, for every transmission in the network, there should be dynamic route generation by the routing protocols. For such networks, the power constraint nature makes it mandatory for the routing protocols to distribute the routes in order to make efficient utilization of power of the nodes [1]. Therefore, designing an appropriate routing protocol in order to reduce the energy consumption of individual nodes in the network is a well-known research problem in MANET. Many applications are there which requires the energy consumption of the nodes to be uniform and the routing protocols to be efficient.In this paper, we plan to study and analyse the performance of some energy aware routing protocols on the basis of certain performance criteria which includes throughput, delay, network lifetime and power consumption using NS2 s...