PID is a gradual performance degradation in solar panels caused by voltage leakage within the system. It leads to electrical losses and reduced efficiency. Thermal imaging detects PID by identifying uneven temperature gradients across the panel surface, indicating areas where electrons are migrating incorrectly, causing energy loss and long-term system failure.

A typical residential solar PV inspection takes 30-60 minutes, depending on the system size and complexity. Commercial installations may take longer, especially if multiple arrays need surveying. After the inspection, a detailed IEC-compliant report with thermal images and fault analysis is typically delivered within 24 to 48 hours.

For accurate results, the IEC 62446-3:2017 standard requires: Clear sunny sky conditions with at least 600W/m² of solar irradiance. Minimal wind speeds to avoid heat dissipation from convection cooling and affecting thermal readings. No Rain, Moisture, Dew, Snow, Mist to avoid heat dissipation from convection cooling and affecting thermal readings. These conditions ensure precise thermal imaging and prevent false readings due to environmental interference.

Thermal imaging identifies hotspots, cracked cells, faulty bypass diodes, delamination, water ingress, loose electrical connections, and Potential Induced Degradation (PID). These issues can reduce energy output, increase fire risks, and lead to expensive repairs if left unaddressed. Early detection helps homeowners and businesses optimise performance and prevent costly failures.

IEC 62446-3:2017 is the international standard for thermal imaging inspections of solar photovoltaic (PV) systems. It ensures that all thermal assessments are conducted using certified thermographers, calibrated infrared cameras, and optimal environmental conditions. This standard helps detect hotspots, electrical faults, and degradation, preventing energy losses and safety hazards such as fire risks and overheating components.