Impact of BIPV Panels Across Various Window-to-Wall Ratios in Commercial Buildings, to Reduce its Energy Performance Index in Warm and Humid Climate Zone of India

People and technology have to keep up with this ever-moving fast-growing world. Building sectors are not only increasing in floor area but also demand more energy and builds up pressure over at the supply end. In such an era renewable energy becomes the key to meet the demand over at the supply end. The building has to be made self-sufficient to sustain even when the supply end experiences a delay. Therefore this study is one such Design Alternative approach that will help the building be more self-sufficient. The integration of the BIPV over the building façade will not only help generate energy within the building premise but also help reduce the EPI of the building resulting in savings both in time and cost. The results of the study propound For low-rise buildings, WWR02 (north façade WWR-50%, east façade WWR-25%, south façade WWR-25% and west façade-25%) gives the minimum EPI values because this combination minimizes the heat gain inside the building through windows. For high rise buildings, WWR01 (north façade WWR-50%, east façade WWR-35%, south façade WWR-35% and west façade-35%) gives the minimum EPI values due to the increase in interior lighting and ventilation requirements which require larger window area percentages.