Predicting Energy Efficiency Performance for Building Integrated Photovoltaic

Abstract

One-third of the world's energy are consumed by buildings. In Indonesia, the main source of this energy is fossil fuel that act as the main contributor to global warming and climate change. Improving energy efficiency on a building is important to approach greener environment. EDGE is a tool that respond to the need for a measurable and credible solution to approach green design, including the energy-efficient building design. Here, the calculation of energy efficiency covers the comparative measurement of base case and improved case, including the comparison of geometry and building orientation, mapping of energy use, and prediction of energy harvesting from renewable energy resources. Studying this concept further is important to predict cost of going green, to ensure utility savings, as well as to reduce negative impacts to the environment. This study presents Universitas Ciputra building as the proposed case. This building is chosen since it already had some green features. Additionally, the building also has the potential for on-site renewable energy integration, particularly for solar energy with BIPV concept. Experimental method with simulation as its tool is used to find the energy-efficiency performance of the proposed case. Base case is provided by EDGE. The UC's existing building is set as the 1 st treatment (improved case 1) and UC building with additional PV is set as the 2 nd treatment (improved case 2). The result from EDGE simulation shows that the improved case 1 has 28.66% better energy-efficiency performance. While the improved case 2 (with only 7% annual electricity substituted by renewable energy from PV) has 33.23% better energy performance.