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A team of engineers from the University of California, San Diego, produced an online issue on solar energy. The study concluded that you should not employ someone to clean your solar panels and waste money.

According to Jan Kleissil, the study’s chief investigator, most homeowners do not receive their money back when employing outside cleaners to clean their panels. According to studies, solar panels that had not been cleanesd or rained on for 145 days over the summer in California lost only 7.4 percent of their effectiveness. Jan Kleissel adds that the research limits to smaller systems. Washing panels may be profitable for extremely large installations because of economies of scale (EOS).

The engineers evaluated data from the California Solar Initiative. This evaluation showed solar panel production at 186 residential and commercial sites from the San Francisco Bay Area to the US-Mexico border in 2010. They compared production after the panels had received more than 0.1 inches of rain. They also included the productivity during California’s 145-day summer drought the same year. According to the study, the panels would have been washed by rain but would have stayed unclean during the drought.

Furthermore, the primary author of the research report, Felipe Mejia, claimed that while dust on PV panels does make a difference. However, it is not a significant enough influence in California to merit cleaning. Pollution and dust levels in California are indicative of the rest of the country, if not greater.

Other factors discovered during the study

According to studies, solar panels installed at an angle of fewer than five degrees resulted in greater efficiency losses. The fundamental reason for this is that the dirt slides off the panel due to its slope. However, the engineering team found no statistically significant changes in output across different sections of the state throughout the dry period.

It is critical to clean up heavily stained bird droppings from your solar panels

Unlike dust, bird droppings can prevent all sunlight from reaching the panels. Furthermore, they will not be washed away by rain. This can result in huge inefficiency. Furthermore, throughout the investigation, the researchers discovered that solar panels were unclean enough to justify cleaning at a few places owing to highly particular and localized circumstances.

Another phase in the investigation was examining more closely at the sites that did require cleaning. This step also involved determining what caused the panels to get so filthy. However, as the last step, researchers were able to install collectors at specified locations to detect the type of dirt that collects on the solar panels. The first type was to explore if specific materials could keep dirt from collecting. The second was to see if unique, less expensive washing methods could remove dirt from the panels more effectively.

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