Just as a grimey window does not transmit as much light as one that’s sparkling clean, dirty solar panels will not produce as much energy as panels that are clean. But cleaning solar panels isn’t as easy as washing windows. Nor is it easy to figure out when they need to be cleaned.
Both homeowners and commercial solar installations have to deal with issues related to keeping solar panels clean. For homeowners, the best advice in rainy areas is to have the panels professionally washed every thr...
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