Ad hoc networks are wireless networks that can operate without infrastructure and without centralized network management; they may contain nodes with limited battery power. Hence, energy conservation is a critical requirement in the design of routing protocols for ad hoc networks. Clustering has been proposed as a promising method for simplifying the routing process in mobile ad hoc networks when network size increases. In this paper, we propose an energy-efficient multipath routing protocol, called ES-CMR (Energy aware and Stable Cluster-based Multipath Routing protocol), which preserves the residual energy of nodes and increases the network lifetime. To achieve this goal, we use an objective model to select energy-efficient paths with stable links. Simulation results demonstrate that ES-CMR has better performance in terms of energy consumption, network lifetime and end-to-end delay.