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In Wireless Sensor Networks, the sensor nodes are energy constrained and hence the design of energy- efficient routing protocol is an important challenge to be addressed. Among the different clustering procedures used for energy-efficient routing, grid-based clustering method is more efficient in energy optimization. Therefore, we propose an Energy-Efficient Grid-based Routing algorithm for sensor network in this work for preserving the energy in sensor nodes and to enhance the network lifetime. Moreover, routing is performed through a Grid Coordinator that applies fuzzy rules to find the optimal route in order to reduce the number of hops in the routing process. From the simulations carried out in this work, it is observed that the proposed routing algorithm provides better performance in terms of residual energy and network lifetime when it is compared with other existing grid and cluster based routing protocols.