Performance Analysis and Comparison of a 93.6 kW Grid-Connected Rooftop Photovoltaic System in South Tangerang

Abstract

System performance analysis and comparison are necessities for ensuring the optimal operation of a photovoltaic (PV) power plant system. The primary metric that affects the PV system's productivity, dependability, profitability, ecological footprint, and grid compatibility are called Key Performance Indicators (KPIs). This study analyzes the KPIs of a 93.6 kW grid-connected rooftop PV system in South Tangerang and then compares them with the previous studies. Solar irradiation and output power data are collected. Then a modified extrapolation approach is used to fill in data gaps before proceeding with the performance parameter calculation. The performance indicator analysis refers to the IEC 61724-1 standard, including performance ratio (PR), final energy yield, system efficiency, system losses, and capacity factor. The results indicate that the PR, final energy yield, system efficiency, losses ratio, and average daily capacity factor varied from 82.0% to 91.6%, 2.94 to 3.70, 13.7% to 15.7%, 8.4% to 18.0%, and 12.12% to 15.67%, respectively. Compared to other studies, the PR values are much higher than expected. All of the other parameters, however, are normal. As a result, it shows that the PV system is working correctly.