Operational Analysis of Rooftop Solar Power Plant (PLTS) at GMIT Jemaat Paulus Kupang

Rooftop Solar Power Plant (PLTS) is one of the renewable energy solutions that support energy efficiency and environmental sustainability. This research is entitled “Operational Analysis of Rooftop Solar Power Plant (PLTS) at GMIT Jemaat Paulus Kupang” and was conducted for four months at GMIT Jemaat Paulus Kupang. The purpose of this research is to analyze the performance and effectiveness of the rooftop solar power system installed in the church. Measurements were made using tools such as Digital Multimeter and Ampere Pliers. This research uses descriptive and quantitative methods, including literature studies, interviews with PLTS management officers, and direct measurements in the field to obtain primary and secondary data related to geographical and weather conditions. The results showed that the performance of the rooftop solar power plant decreased significantly due to factors such as solar radiation intensity, ambient temperature, and the physical condition of the solar panels and inverters. During one week, GMIT Jemaat Paulus Kupang used a total of 561.396 kWh of electrical power to meet load requirements. Of this amount, PLTS supplied 499.2468 kWh of power, while the remaining 62.1492 kWh was supplied by PLN. The excess power generated by the PLTS, because it is greater than the total load demand, is exported back to the PLN network.