Impact on Performance
Based on the crack distribution and type found during the electroluminescense inspection, is it likely that the module’s nominal power has been reduced by approximately 4%. Furthermore, these types of cracks could eventually lead to inactive areas and higher power loss in the midterm.
The string cables disconnected from the inverter had an impact of 7% on the overall installed capacity at the time of the visit.
The short circuited modules and the modules with inactive cell strings lead to an overall reduction of the nominal power of around 3%. This statement bases on the extrapolation of the results of the inspected samples.