Sloped panels allow rainwater to flow off easily, preventing debris accumulation. Gutter systems capture rain and direct it away from the panels.
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Electro-magnetic interference (EMI) is typically taken to mean radiofrequency (RF) emissions emanating from PV systems impacting nearby radio receivers, but can also include interference with communication devices, navigational aids, and explosives triggers.
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Solar panels degrade over time because cell materials and interconnections deteriorate from light-induced degradation (LID), potential-induced degradation (PID), thermal cycling, UV exposure, moisture ingress, microcracks, and soiling.
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Solar panel power generation drops during rainfall but benefits afterward as rain removes dust and supports efficient performance in cooler conditions.
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