Drone-based solar panel fault finding is a fast, accurate, and cost-effective method to detect issues in photovoltaic (PV) installations—whether small rooftops or vast solar farms. Here’s a full overview of how it’s done, what a great drone pilot will deliver, and why it’s valuable:
☀️ What Is Drone Solar Panel Fault Finding?
It involves using thermal imaging drones to fly over solar panels and identify faults by detecting abnormal heat patterns (called thermal anomalies). These can indicate:
Fault Type Thermal Pattern Seen
🔥 Hotspots Localised heating—faulty cells or bypass diodes
⚡ String Failures Uniform sections cooler than others
📉 Degradation Inconsistent temperature along cells
🚫 Disconnected Panels Cold spots where no power is being produced
🧊 Soiling or Shading Cool stripes due to dirt/leaves
How Drones Perform Solar Inspections
Pre-flight Planning
Site maps, weather conditions, permissions (esp. near substations or restricted airspace)
Thermal Flight Mission
Drone flies an automated grid pattern over the panels using waypoints
WE Use radiometric thermal camera (e.g., DJI M30T, Matrice 300 w/ H20T, or Mavic 3T)
Visual + IR Imaging
Captures RGB images and 640×512 or higher thermal video/images
Data is geo-tagged for accurate fault location
Post-Processing & Report Generation
Software like FLIR Tools, Pix4D, DJI Thermal Analysis Tool, Raptor Maps used to analyse faults
Reports include fault locations, panel IDs, severity grading, and suggested maintenance
