Performance assessment of a residential Building Integrated Photovoltaic (BIPV) system in Dhaka city

Abstract

Residential buildings, being an unavoidable part of day-to-day life, can have an impactful subsidy to the Renewable Energy Source (RES). Therefore, in this work, the energy-focused outcome of integrating the BIPV (Building Integrated Photovoltaic) system into a pre-built residential building in Dhaka city has been assessed. To begin with, segmentation of the building into subsystems and incident energy estimation have been considered. The building encounters a total of 391.66 MWh of incident energy over the course of one year. Taking 17% panel efficiency and 32 % system losses into account, the system generates 45.80 MWh of electrical output energy per year without considering cloud impact. It is around 53 % higher than the energy requirement (21 MWh) of the building. The system remained grid independent for more than half a year. It can reduce the emission of carbon by about 20,751 kg. Assuming the longevity of the system to be 20 years, the financial analysis shows that the initial cost can be retrieved within 4 years. It demonstrates that the BIPV system can meet the energy demand of the studied building while reducing grid dependency and carbon emissions.