Pigeons and starlings can cut California solar output by 5–30% and create fire hazards under panels. Here's what bird damage actually looks like, what proofing costs in 2026, and whether DIY is worth attempting.

Dust, wildfire ash, and bird droppings can quietly cut California solar output by 5–30%. Under NEM 3.0, that lost production costs real money. Here's exactly how often to clean, what it costs in 2026, and when to call a licensed professional.