Title: Analysis of Energy Cost Savings by an Eco-friendly Building in a University Campus
Abstract: The study compares the Ewha Campus Complex (ECC), an eco-friendly building, and a conventional reference building in terms of energy usage and electricity cost, in order to understand the general effects of energy cost savings due to the presence of eco-friendly buildings in university campuses.The result indicates that the electricity usage and associated cost per area of the ECC is indeed lower than that of the reference building.However, because of the relatively low utilization rate of the ECC in class activities, the advantage over the reference building seems to be limited at present.we compute the net present values (NPVs) of the energy cost savings from the differences between the electricity costs per area.Our NPV analysis shows that the discounted payback period (DPB) turns out to be larger than 60 years.We also analyze the eco-friendliness of the ECC by calculating the difference in greenhouse gas (GHG) emissions.The ECC shows lower GHG emissions per area by 13.5% than that of the reference building, which suggests that eco-friendly buildings can play a great role in the reduction of GHG emissions.