Free solar performance diagnosis
Your solar panels are probably losing 10–30% of their output.
Most solar owners don't know their system is underperforming. Enter your system details below — we'll identify likely faults and tell you whether you need a professional inspection. Free, no signup.
Diagnose my system freeSolar Loss Checker
Estimate how much energy your solar system may be losing, identify likely faults, and track your health over time.
No personal data stored. Results are estimates based on conservative modelling.
Why solar systems underperform
Multiple factors reduce solar output over time. Understanding them helps you decide whether action is needed.
Natural degradation
0.5–0.8% per year is normal. Faster decline signals a problem.
Hotspots & cell damage
Invisible to the eye. Detectable only via thermal imaging.
Shading & soiling
New tree growth or dirt can reduce output 5–30%.
How a thermal inspection works
Professional inspections find problems you can't see — in under an hour.
Drone scan
A thermal-equipped drone captures infrared images of every panel on your roof.
Defect detection
Thermal anomalies reveal hotspots, micro-cracks, and soiling invisible to the eye.
Report & action
You get a clear report with loss estimates, cause analysis, and next steps.
Quick assessment
Should I get a thermal audit?
Answer 6 quick questions to find out if a professional thermal inspection is worth the investment for your system.
Take the assessmentFind inspection providers
Connect with certified thermal inspection and drone audit providers worldwide.
Common solar performance issues
Based on conservative solar performance modelling and published degradation data
Updated June 2026 · Structured performance modelling
How we calculate →