The simulated operation of a grid-tied polycrystalline PV system with a capacity of 20 kWp is studied in this paper. The purpose of this study was to determine whether developing a photovoltaic system that could meet an academic institution's electric load was feasible. There are 54 polycrystalline PV panels rated 380 Wp in the simulated system. Each of the 3 strings that comprise the PV system is composed of 18 PV panels connected in series. The PV system is tied to the grid at the point of common coupling via a 20-kW inverter and the software PVsyst V7.4 is used to run the simulation. This study has utilized the meteonorm weather datasets of solar irradiation and temperature from the PVsyst library. To evaluate the PV system's performance, the simulation results were analyzed. Evaluating the PV array's effective power output, the grid injected power, the performance ratio, and other standardised power generated per installed kWp are all included in this study. The study result shows that 26.13 MWh/year was injected into the grid by the simulated PV system; the annual performance ratio was 80%; the standardized inverter output or final system yield was 3.97 kWh/kWp/day; moreover, the total annual systems loss was computed using the Sankey loss diagram, loss diagram computed over the study period indicated a 4% inverter loss during operation, which is within the allowable limit of the industry standard. These findings would encourage large-scale electric power consumers and stakeholders in the energy sector to take advantage of the knowledge gained from this study.