The proposed solar panel dirt detection and cleaning system improves the efficiency in generating output voltage that integrates Arduino micro-controller with voltage recognition technology to enhance the efficiency of solar energy harvesting. The system utilizes voltage divider circuit to identify dirt or debris on the solar panel surface by analyzing changes in output voltage produced by the solar panel. Along with voltage divider circuit, LDR (Light Dependent Resistor) sensor is utilized to enable the cleaning process only in day time when the intensity level of the LDR is more than threshold value. Upon detection, the Arduino micro-controller triggers a cleaning mechanism to remove the identified dirt. The cleaning mechanism can be designed using actuators, brushes and other appropriate tools. The Arduino's programmability allows for customization of cleaning intervals, ensuring timely maintenance. The output voltage measurement plays a crucial role in spotting dirt accumulation on the solar panel. This ensures accurate detection, minimizing false positives and optimizing the cleaning process. Additionally, the system can be enhanced with data logging capabilities, enabling users to monitor the cleanliness status of the solar panels over time. This information can be valuable for predictive maintenance and overall system performance analysis. The voltage analysis for detecting dirt with integration of Arduino offers an intelligent and automated solution for solar panel maintenance, ensuring consistent energy output by keeping the panels free from surface contaminants.