Solar Panel Maintenance Guide: Keep Your System Running (2026)

Clean panels 1-2 times per year, or more in dusty or pollen-heavy areas. Rain handles most cleaning naturally. For stubborn dirt, use water and a soft brush. Annual visual inspections should check for cracked glass, loose wiring, or corrosion. Never use abrasive cleaners or pressure washers.

Modern solar systems include monitoring apps that track real-time production. Check your monitoring weekly to spot underperforming panels or system issues. A sudden drop in production may indicate a failed panel, inverter issue, or new shading. Most monitoring systems send automatic alerts for anomalies.

The most common issues include bird nesting under panels, squirrel damage to wiring, inverter faults, and production drops from new tree growth. Critter guards prevent animal damage. Inverter replacement costs $1,000-$2,500. Most issues are covered under warranty.

Contact your installer for electrical issues, significant production drops, physical damage, or warranty claims. Professional inspections every 3-5 years help catch developing issues. Never attempt electrical work on your solar system yourself as panels produce live electricity whenever exposed to light.