A review on cleaning techniques of solar photovoltaic panels Available to Purchase

Solar energy is increasingly becoming a significant source of clean energy. It harnesses a lot of benefits including the social, environmental, and economic aspects, and increases the progress toward the United Nation’s Sustainable Development Goals (SDGs). Photovoltaic (PV) system installations in rural areas and deserts suffer from dust accumulation on PV surfaces reducing the solar radiation penetration, thus reducing the output generated from the PV system. As a result, in order to maintain consistent performance, PV panels must be cleaned on a frequent and efficient basis. The objective of this paper is to provide a review of dust cleaning methods for solar PV panels with an emphasis on a sustainable perspective for dust separation. There are various cleaning methods, including passive, active, and manual cleaning. This paper shows the progress of current cleaning methods through extensive research. Plenty of research has been done on various cleaning techniques for solar photovoltaic panels. The optimum cleaning method mainly depends on various parameters and the available budget. However, researchers are generally promoting nanofilm coating and robotic systems while considering PV plant size, design, tilt angle, location, water availability at the site, and type of dust.