This research aims to analyze and compare the performance of the Thermoelectric Cooler (TEC) active cooling system with the Perforated Aluminum Plate passive cooling system on 20 WP polycrystalline solar panels. Testing was carried out for 14 days with data collection every minute from 09.00 to 15.00 WIB, including parameters of temperature, voltage, current, output power, and light intensity r…