The success of wireless mobile networks is leading to an increase of power consumption in cellular networks caused by the massive growth in the number of base stations worldwide to serve the large cellular traffic demand. Hence, new methods and strategies are needed in the management of mobile networks in order to decrease energy consumption while maintaining reasonable costs and high quality of service for the users. Therefore, a new algorithm is proposed in this paper to help in reducing energy consumption of heterogeneous Long Term Evolution (LTE) network using Macro and Micro base stations. This algorithm will compute the energy consumption of different cell coverage configurations and choose the least power demanding scenario. Numerical simulations will prove the efficiency of our algorithm in comparison with traditional and existing cellular coverage schémas.