부산대학교 도서관

In the present circumstances of high electricity prices combined with environmental concerns and sustainability targets, large enterprises and institutions aim to reduce their grid electricity consumption by installing renewable resources such as Photovoltaic (PV) arrays. Each commercial building will require its unique design, configuration, and installation process to achieve optimal savings. This paper presents the case study of a PV system installation in the building of the Pakistani Association Dubai (PAD), UAE, to reduce the high energy consumption of the institution. The proposed approach in this study utilizes several inputs, including the available roof areas, the orientation of the building, annual electricity bills, and the weather historical data among others, to size the PV system for the two main buildings in the PAD center. The objective of the proposed approach is to reduce the overall annual cost, which includes the annualized capital costs of the PV panels and inverters, installation costs, maintenance costs, and annual bills to maximize the savings. Several case studies are presented based on roof availability. The results show a significant reduction in the annual electricity consumption hence the bills. When the two PAD buildings’, available space is fully utilized, annual costs are reduced by 17.4%, whereas when only 25% of the space is utilized, costs are reduced by 3.0%. The figures decrease when the rooftop area of one building at a time is utilized which is shown in the other case studies investigated.