In the present research the energy consumption of an institutional building is minimized by considering energy saving alternatives, followed by energy simulation in eQUEST software, based on the whole building performance method, as a way to implement an environmental friendly technology that can reduce the impact in several areas such as saving energy, reducing CO2 emissions, reducing materials consumption, reducing mercury consumption, and recycling issue of a building. The existing institutional building considered for annual energy analysis is further designed using ECBC User Guide and...