The Rise in Solar Panel Failures: Why does it matter?
41% of inspected modules exhibited some visual defect. Backsheets account for 9% of observed defects.
As part of ongoing DuPont fielded module studies, defects were found to be in 73% of installations in both North America and Europe/Middle East/Africa. 47% of all modules had a defect. The costs associated with replacing defective modules are significant.