Indonesia as a muslim majority country makes the mosques plays big part of the society. Activities other than prayer are also held in the mosques. Therefore, the electrical energy consumption can be consumptive and inefficient if they are not properly managed. Also with the tropical climate of Indonesia where the humidity is high makes achieving thermal comfort more difficult for the air conditioner, it also makes the energy consumption much higher. In this particular research, we aimed to analyze the energy consumption in some mosques in Indonesia and give a recommendation on how to reduce the electrical energy consumption. By managing the energy and conserving the energy to achieve efficiency in mosques.