review · Solar Compass
Dust accumulation significantly impairs the operational efficiency of photovoltaic panels, causing performance declines ranging from 10 percent in mild conditions to over 40 percent in arid environments. Specific particulate types cause differing degrees of damage, with coal dust reducing efficiency by up to 64 percent, fine sand by 32 percent, and gypsum by 30 percent. The physical mechanisms driving these power reductions include blocked light transmission, elevated cell operating temperatures, and increased resistive losses. Accumulation rates depend on complex interactions between environmental factors such as wind speed, precipitation, and humidity, as well as installation variables including panel tilt and mounting height. Applying manual, automated, or passive cleaning methods can restore up to 95 percent of baseline efficiency, while routine cleaning regimens in dusty areas prevent annual energy losses exceeding 30 percent.
Solar power plays an expanding role in reducing carbon emissions and achieving global renewable energy targets. However, unchecked dust deposition substantially undermines energy generation and project revenues. Identifying the precise mechanisms behind soiling and implementing targeted maintenance helps plant operators prevent major power shortfalls, ensuring photovoltaic infrastructure produces dependable clean electricity across diverse climates.
This synthesis informs solar farm operators, maintenance contractors, and installation engineers seeking to minimise output losses through tailored cleaning regimes and panel placement. While the abstract describes a review rather than a proprietary technology, it directly assesses applied and commercially available interventions, noting that deployed manual, automated, and passive cleaning tools can prevent major annual generation deficits.
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• Dust buildup reduces PV efficiency by up to 64%, with coal dust most detrimental. • Tilt angle, environmental conditions, and dust properties majorly influence dust accumulation on panels. • Cleaning methods (manual, automated, passive) restore up to 95% efficiency. • Dust blocks light, raises cell temperatures, and causes resistive losses, reducing output power. • Regular cleaning in high-dust areas prevents >30% annual energy loss. Understanding the drivers of photovoltaic system performance is very important in the backdrop of the increasingly significant role that solar energy plays in mitigating carbon emissions. Dust accumulation on surface of photovoltaic panel may result in a high degradation of PVs' efficiency with losses ranging from 10% in mild conditions to over 40% in arid regions. This review systematically explores the effects of dust deposition on PV performance, emphasizing the role of environmental factors such as wind speed, precipitation, humidity, and dust composition. Dust particles impede light transmission, raise cell temperatures, and increase resistive losses, leading to reduced output power. Notable efficiency reductions are linked to specific dust types, such as coal dust (up to 64% losses), fine sand (32%), and gypsum (30%), as highlighted by global case studies. This review further underlines how dust accumulation patterns are influenced by complex interactions of environmental factors such as wind precipitation and humidity. The installation characteristics, such as the height of the panels and their orientation, further exacerbate or mitigate the impact of soiling. This study has been designed to put a great deal of significance on the maximisation of solar PV efficiency, given the critical requirements for global renewable energy targets. It flags some promising cleaning methods and emphasises a holistic approach to the optimisation of PV system design and maintenance practices to empower the widespread adoption of this transformative clean energy solution.
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DOI: 10.1016/j.solcom.2024.100101
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