PV/Battery System Sizing

Abstract

The increasing utilization of renewable energy for electricity production is driven by population growth, economic expansion, changing consumer preferences, environmental concerns, and the rapid depletion of fossil fuel resources. Renewable energy sources such as sunlight, wind, hydro, biomass, and geo thermal are considered practically infinite and crucial for reducing pollution and safeguarding human health. This paper focuses on the optimal sizing of photovoltaic (PV) and battery systems for residential applications in Chicago, Illinois, USA, where the average annual solar radiation is 4.74 kWh/m²/day. The study employs PVsyst and the System Advisor Model (SAM) for energy modeling and performance prediction, assessing system requirements and performance under local conditions. Through accurate energy modeling and detailed loss analysis, this approach ensures proper system sizing, reliable performance forecasting, and informed strategies for preventive maintenance in residential PV/battery installations.