Uneven soiling is the bigger risk
NREL's O&M best-practice guide says soiling reduces energy output "and can lead to localized hot-spot failures if the soiling is uneven," and names bird droppings as the example to reduce.
The same guide lists bird populations as a source of soiling, along with nests that need removal and seeds that can sprout on arrays.
Clean it the right way
NREL's O&M guide says to follow the module manufacturer's cleaning recommendations. Our crews clean with soft brushes and pure water.
Stop the source
Cleaning removes the droppings. Bird abatement mesh keeps birds from nesting under rooftop and carport panels, so the problem doesn't come right back. Ask us about pairing a cleaning with abatement.
