Solar panel inspection in California

A standard visual and electrical inspection in California costs $199–$349. A full thermal imaging audit using drone or handheld FLIR cameras runs $299–$549 for a typical residential 5–10 kW system. Commercial inspections are quoted per kW and usually start around $0.04–$0.08/W.

PanelAudit lists 9 thermal and drone inspection providers serving California, mixing national networks with CA-licensed local operators. We track coverage across 4 California cities — request 2–3 quotes to compare turnaround, drone vs handheld FLIR, and certifications.

CA's hot arid climate accelerates panel degradation, with cell hotspots typically causing 5–20% output loss. Soiling risk in CA is high, and natural degradation averages 0.5%/year on quality panels — so a 10-year-old system should still be performing within 5% of nameplate after cleaning.

Every 3 years is recommended in CA — 5.8 peak sun hours means degradation shows up faster in real kWh terms. Always inspect after a hail event, major storm, or if monitoring shows a 8%+ year-on-year drop.

Yes. Commercial drone solar inspections in California require an FAA Part 107 certified pilot, and most reputable CA providers fly DJI Matrice or Mavic 3T airframes with calibrated FLIR sensors. Flights stay below 400 ft AGL and require basic homeowner consent.

Yes — most panel and inverter warranties require third-party diagnostic evidence (thermal images, IV-curve traces, or performance reports) before honouring claims. A $300–$500 inspection in California often unlocks $2,000–$8,000 in covered repairs or panel replacements.