Rainfall experiments found solar panels cut soil erosion beneath their surfaces by 27–63%, while concentrated dripping created new erosion hotspots along panel edges

Solar panels significantly reduce soil erosion directly beneath them during rainfall events. However, concentrated runoff at panel edges causes increased erosion in those specific areas. Studies indicate that this edge effect can substantially elevate erosion rates and runoff volumes. Researchers suggest simple solutions like ground cover to mitigate these edge hotspots. Expanding solar farms must consider these edge impacts for effective land management.