The paper mainly discusses on the method how to save energy so as to follow the "Low Carbon and Green Growth" by the govemment and the Building Energy Efficiency Rating System. For the purpose of interior comfort as well as effective operation and management of buildings, this paper does basic research on development of elementary technology for saving the energy used in building. In this paper, the interior lighting control zone is selected to make a lighting control algorithm which takes the reduction of building energy into consideration for saving building energy when the building envelopes are replaced by the BIPV system.