Degradation. My PV panels are almost ten years old now. Yesterday was bright sun , blue sky and cold wind. At midday, they were delivering the full rated power. So they haven't deteriorated by much.
Solar PV panels
Aug 30, 2020
Last reply: 5 years ago
2 Replies
Which was? My weatherstation reported 260.7 W/m^2 at midday.
I assume the glass is self-cleaning. Or do you have them washed occasionally (if they are reachable)?
NOt really a very scientific test though. You may find that the control system is designed to keep the output the same as a maximum, and hence they are still within spec, but might not be as good as they were. I doubt if you get much radiation damage at sea level though! Brian
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