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Having birds under solar panels is not only an eyesore and a nuisance but can be damaging to your solar system. They can build nests that block the sunlight from reaching your panels and the guano they leave behind is corrosive to the frame of the panels and can lead to damage. make it difficult for rainwater to flow properly and can cause water damage inside your home. The nesting materials they gather under your solar panels can attract other pests to your roof, such as rodents, squirrels and cockroaches. Birds are known to access your solar panel