Commercial building is the most using of electrical energy utilization with the increase in consumption and bigger capacity of electrical equipment . When the energy demand is increase, it can relate to the increase of energy losses and non-systematic in energy consumption. So that, the energy management play the main role for reduce the cost. In Malaysia, based on the promotion of energy efficiency in Malaysia which is in the Efficient Management of Electrical Energy Regulations 2008 that introduced on 15 December 2008, the management of large commercial and industrial electrical consumer are required to develop and carry out the energy efficient measures in order to reduce the energy losses and perform the efficient utilization of electrical energy in the organization.