Journal of the Korean Solar Energy Society ISSN:1598-6411(Print) 2508-3562(Online) 한국태양에너지학회 논문집

Korea has set a target to reduce greenhouse gas emissions in the building sector by approximately 33% by 2030, compared with 2018 levels. Photovoltaic (PV) systems are among the most representative renewable energy technologies for decarbonization, and their installed capacity has increased rapidly. However, PV systems are typically installed facing south to maximize power generation, which is concentrated around midday. This can create imbalances between power supply and demand, harming grid stability. To distribute power generation more evenly throughout the day, east-west-facing PV systems have become a popular choice. In addition, studies are conducted on the effects of bifaciality, albedo, azimuth, and installation height to improve the power-generation performance of east-west-facing PV systems. Nevertheless, relatively few studies have comprehensively analyzed the combined effects of these variables through experiments and simulations. Therefore, this study analyzes the power-generation characteristics of a vertical bifacial PV system through outdoor experiments under different azimuth and albedo conditions. Based on these results, a PVsyst simulation model was developed to predict the annual energy yield. Finally, the experimental and simulation results were compared and analyzed to evaluate the power generation characteristics.