Performance Evaluation of Solar Rooftop Plant of 5kWp: A Case Study

Abstract

This study explores the design of a solar photovoltaic (PV) system for an educational institution, utilizing PVsyst software for analysis and simulation. The performance of the PV system is influenced by several factors, including geographical location, solar irradiance, type of PV module, and the module’s orientation. The study combines theoretical analysis with simulations of the PV system under various load conditions within the building to optimize power output, performance ratio, and overall efficiency. A comparative analysis is conducted for a laboratory load with fixed tilt angles, exploring different azimuth orientations to enhance energy production and improve the system's efficiency. The efficiency of a PV module solar system mainly depends on its topographical condition and the type of PV modules used. These systems are most effective in areas with sufficient solar intensity. The present research focuses on the performance of a 5kWp PV solar system, a second-generation PV technology. The observed data indicates that daily average energy yields for the experimental solar system were 5kWh/kWp (array yield), 6.25kWh/kWp (reference yield), and 4.91kWh/kWp (final yield). Meanwhile, PVsyst simulation results estimated slightly higher values of 5.46, 6.39, and 5.32kWh/kWp, respectively. The total yearly power generated was 6910.2kWh for the experimental PV solar system and 7485kWh according to PVsyst software.