Review on Development of a Closed-Loop Solar Panel Cleaning System with Automated Water Filtration & Reuse of Water

The efficiency of solar panels decreases significantly due to dust and dirt accumulation, which obstructs sunlight and lowers power output. To address this issue, this project proposes a Closed-Loop Automated Solar Panel Cleaning System with IoT Integration. The system employs a high-pressure DC water pump with adjustable pressure control to effectively clean solar panels. Used water is collected, filtered, and recycled through a closed-loop mechanism, ensuring minimal wastage and sustainable operation. A water level sensor monitors the pure water tank, while a secondary DC pump automatically refills it from the main source when required. An Arduino Uno microcontroller manages automation, while IoT connectivity enables remote monitoring, scheduling, and control. The system is powered directly by solar panels with surplus energy stored in a battery, ensuring continuous and self-sustained functionality. This smart solution not only eliminates the need for manual cleaning but also enhances panel efficiency, extends lifespan, and promotes resource conservation in solar power plants and rooftop installations.