Document Type : Research Article
Authors
1 Department of Electrical Science, Faculty of Engineering, Universitas Negeri Yogyakarta, Yogyakarta, Indonesia
2 Department of Electrical Engineering, Dirgantara Markesal Suryadarma, Jakarta, Indonesia
Abstract
This study evaluates the feasibility of a grid connected rooftop photovoltaic system for fast charging using a 120 case study in Bandung. Photovoltaic energy yield is validated using , while hourly energy balance and discounted cash flow are analyzed in HOMER Pro for three scenarios namely grid only, photovoltaic with self consumption only, and photovoltaic with net billing export credit. The model applies local climate data, a capital cost of 20 million rupiah per kilowatt peak, and a real discount rate of eight percent, resulting in a performance ratio of 0.78 to 0.82 and annual photovoltaic production of about 160 megawatt hours. For a fast charging station with an annual load of 182.5 megawatt hours or 500 kilowatt hours per day from a 50 kilowatt charger, photovoltaic generation supplies 63 percent of demand with 72 percent self-consumption. Compared with the scenario, photovoltaic integration reduces the Net Present Cost by 9 to 13 percent, lowers the cost of energy to 910 to 940 rupiah per kilowatt hour, achieves an 8 to 10 year payback period, and avoids about 87 tons of carbon dioxide emissions annually.
Keywords