University of Tehran Journal of Solar Energy Research 2588-3097 11 1 2026 01 01 Techno-Economic Assessment and Optimization of Grid-Connected Solar Powered Electric Vehicle Charging Stations in Urban Indonesia 2835 2850 106003 10.22059/jser.2026.401157.1623 EN Linda Faridah Department of Electrical Science, Faculty of Engineering, Universitas Negeri Yogyakarta, Yogyakarta, Indonesia 0009-0006-8273-3858 Rustam Asnawi Department of Electrical Science, Faculty of Engineering, Universitas Negeri Yogyakarta, Yogyakarta, Indonesia 0009-0001-0392-9881 Handaru Jati Department of Electrical Science, Faculty of Engineering, Universitas Negeri Yogyakarta, Yogyakarta, Indonesia 0000-0002-0509-8460 Nurwijayanti KN Department of Electrical Engineering, Dirgantara Markesal Suryadarma, Jakarta, Indonesia 0000-0001-6395-2787 Journal Article 2025 08 22 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. https://jser.ut.ac.ir/article_106003_48c2ee2c786575b557a38360c8afd6cb.pdf