A mere rinse very well might not get the job done, and using soapy water on a solar panel can be a dicey proposition. Some panel surfaces are delicate enough to chip under the roughness of a mere wet rag. No one wants to smear three months of scum all over the glass. Finally, there is the small problem of possibly falling off the roof. There are reasons this work is typically left to a solar panel cleaning service.
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Cleaner Panels, More Clean Power
The power gains from using a solar panel cleaning service are significant. In an experiment conducted at Google's 1.6 Megawatt Mountain View CA solar farm it was found that washing solar panels that'd been used for 15 months doubled their electricity output. Further, professional cleaning yielded a 12% higher output than cleaning by rain. Source: https://googleblog.blogspot.com/2009/07/should-you-spring-clean-your-solar.html |