Techno-Economic Analysis on Grid Connected Solar Photovoltaic System with Battery Energy Storage for Domestic and Bulk Customers in Sri Lanka

It has been seen that electricity consumption in Sri Lanka is getting increased, creating an imbalance in supply and demand with economic growth. Nowadays many countries have a strong inclination toward renewable energy resources since the use of fossil fuels emits greenhouse gases and other harmful pollutants which lead to respiratory and cardiac health issues. Solar Photovoltaic system (PV) is a much more feasible and preferable renewable energy resource and now they are being adopted by the domestic and bulk energy users in the country by using different configurations. A most popular such configuration is rooftop solar PV integrated with battery energy storage systems (BESS). This paper proposes a method to analyze the feasibility of implementing rooftop solar PV+BESS which provides the most suitable energy solution according to their selected tariff scheme, location, and maximum available rooftop area. Further, it can be used to analyze the financial benefits for the customers as well. Here, a few case studies are conducted along with the proposal for a general building and analyze the model accuracy by the validation.