in the afternoon sun heat increases to high level due to which the panels heats up very high now my question is this heat will effect the panels life time and will damage the panels or not ??
Most experts believe solar electric modules have a lifespan of at least 25 to 30 years and most manufacturers provide a warranty for this period. However, the truth is that we don't really know for sure since most modern solar panels have not been in existence that long. Many experts believe the actual number could be much higher, possibly as much as 50 years. What is very clear is that solar modules are extremely durable and lose very little of their energy generating capacity over time. From: bit.ly/tpTfK
For mono-crystalline solar panels, most warranties guarantee 90% of the original efficiency when the panel has been used for 0 years, and they guarantee 80% of the original efficiency after 25 years of use. If the original efficiency is 5%, the efficiency after 0 years of use should be 3.5%, and the efficiency after 25 years of use should be 2%. Some people believe that the actual average rate of efficiency loss is slower than that. You might retain 85% of the original efficiency after 25 years, making the average efficiency drop about 0.6% per year. After 75 years, a solar panel that was originally 5% efficient might still be about 8% efficient.
Some are better than others. It depends on the manufacturing technique. All will degrade over time, some over decades, others over months (if they're defective).
They degrade over time, losing efficiency. They're generally good for several decades.
