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The commercial sector counts as one of the biggest consumers of electrical energy. Thus, efforts to save electricity in this sector will also influence significant energy efficiency. Some of the electricity loads that can be saved in this sector include air conditioners (AC), lights, lighting, elevators, pumps, and other electrical equipment. Use of air conditioner in commercial sector can be reduced by control management, both in temperature and power control. Direct load control (DLC) is the control system that can adjust the time schedule for temperature setting and power setting. The results of this paper is to see the potential energy reduced and cost reduced from using DLC in commercial sector specifically office building.