Design of a Stand Alone Solar PV System Using PVGIS and PVsyst Simulation for AB Building of Politeknik Negeri Padang

Abstract

Abstract — The increasing demand for electrical energy on campus has encouraged the use of renewable energy as a sustainable solution. This study aims to design a solar power generation system for the AB Building at Padang State Polytechnic, utilizing the building's roof area as the location for installing solar panels. The system is designed to consist of 90 solar module units configured into 10 strings, combined with a hybrid inverter and a battery-based energy storage system to supply approximately 50% of the total daily load on the third floor of the AB building. Irradiation data was obtained from the Global Solar Atlas website, while system performance simulations were conducted using PVsyst. Simulation results indicate that the SPP generates an annual energy output of 28.1 MWh with a Performance Ratio (PR) of 76% and a Specific Yield of 558.45 kWh/kWp/year. This system can serve as an efficient alternative in supporting the transition to clean energy within the campus environment. The economic simulation shows that the required investment capital is IDR 948,200,000, with operational and maintenance costs amounting to IDR 18,000,000. The economic analysis includes annual electricity savings, net cash flow, net present value, benefit-cost ratio, and cost of energy, and concludes that the solar power system is not yet economically efficient. And to improve economic feasibility, subsequent research could add analysis of carbon emission reductions, renewable energy incentives, subsidy schemes, and the implementation of net metering.

Keywords—Solar Panel, PVsyst, Performance Ratio, Simulation, Energy Efficiency