Drone-based EL inspection at a 34 MW solar plant in Italy

Our Testing & Optimization team has completed a drone-based electroluminescence (EL) inspection campaign at Shell’s Canda solar plant (34 MW), located in the province of Rovigo, in the Veneto region.

Activities carried out:

• EL image acquisition using drones
• Inspection of 10,000 photovoltaic modules
• Defect analysis at cell and module level

This project strengthens our expertise in photovoltaic plant inspections in Italy, particularly in Northern Italy and across the European market.

What is EL inspection in photovoltaic modules?

Electroluminescence inspection is a non-destructive testing technique that allows us to detect internal defects in photovoltaic modules by capturing the light emitted by solar cells under electrical excitation. This enables the identification of issues such as microcracks, cell damage and interconnection faults that are not detectable through conventional visual or infrared inspections.

Advantages of drone-based inspection

By combining EL technology with drone-based platforms, we are able to inspect large-scale solar PV plants efficiently while ensuring full coverage. Drone inspections allow us to capture high-resolution data quickly and safely, improving accuracy compared to traditional inspection methods.

Impact on plant performance

This approach provides detailed insight into module integrity, degradation mechanisms and potential performance losses, supporting informed decision-making throughout the asset lifecycle. Early detection of hidden defects is key to preventing energy losses and optimising plant performance over time.

By integrating advanced drone technology, proven electroluminescence methodologies and local expert teams, we deliver reliable and actionable results for asset owners and operators.

For more information about drone-based EL inspections, contact us: info.italy@enertisapplus.com