In this study, Renewable energy plan of building is presented for energy conservation by analyzing energy consumption of a building applying renewable energy system based on building energy requirements. Energy consumption was evaluated by 4 alternative plan for different renewable energy system. Separated by zones based on the similar rooms, energy usage was evaluated. Energy savings of four selected as an alternative energy usage was calculated for each alternative plan. It was evaluated mainly whole energy alternation based on obligation cost. As a result, all the alternative plans were in good condition in terms of energy saving. Therefore, it is profitable that planning by separating energy source from zone control for building type. Comparative Analysis of actual usage fees and energy simulation, a more accurate energy savings could be found.