Optimizing Grati Landbase PLTS Production by Increasing the Albedo Value of Bifacial Solar Panels

Abstract

PLTGU Grati is developing PLTS Landbase with a bifacial solar panel module with a capacity of 1.5 MWp. Currently, solar energy absorption is not yet optimal so production capacity has not been reached. Therefore, this research aims to optimize the production of PLTS landbase Grati by increasing the albedo value of bifacial solar panels. This research began with a literature study, field survey, PVsyst simulation of the relationship between albedo values ​​and PLTS production and calculating the actual percentage increase in PLTS production. Based on the PVsyst simulation results, the relationship between albedo and kWh output of bifacial solar panels is that the higher the albedo value, the greater the output value of bifacial solar panels. An albedo of 0.08 produces 227779 kWh/year of energy and an albedo of 0.6 produces 228284 kWh/year of energy. Furthermore, the actual results of laying white coral stone under the bifacial solar panel module resulted in a 3.8% increase in production at inverter 1, from the previous production of 210984.9 kWh to 219008.3 kWh for 1 year.  This increase in production occurred due to the provision of white coral reflectivity under the bifacial solar panel module so that the absorption of solar energy is more optimal.