How many years can solar panels be used for 25 or 50 years? & How to Repair a Broken Solar Panel

solar panels are usually guaranteed by the manufacturer for 80% performance for 25 years
according to a report from the US NREL, the performance of solar panels varies from 0.3 to 0.9% per year
silicon-based solar panels have the lowest performance degradation, and thin-film solar panels have a relatively high performance degradation
so if you manage well, you can use it for at least 25 or even 50 years
special cases, but the solar panels that have been in production for over 60 years are now working
If you do not take the performance down, you can use it until it is actually damaged

Silicon-based solar panels are protected by transparent tempered glass of front side and Al frame of side
therefore, it can withstand a sufficient external impact, but it is not universal, so it is sometimes damaged by impact

If the solar panel is damaged, most of the front glass will break
continue to use this front side glass broken solar panels?
solar panels are electrical products used outdoors
If it rains, rain may enter through the front of the broken solar panel and cause a short circuit
but this glass broken solar panels still capable of producing are able to produce electricity continuously It's too good product for discard.
here is two ways to repair a solar panel that has a broken glass front.

The first method is to coat transparent epoxy paint used as outdoor waterproofing agent