I have used these flexible panels on a couple of occasions and in my own experiance although they did work they didn't perform to specc for that long , 3-4 years out of this type of panel is a pretty good effort.
I have found that the ridgid panels that I fitted about 6 years ago to be far more robust and are still operating at specc.
I alo noticed that my flexible pannels tended to "haze" up a bit after a year or so whereas the ridgid panels haven't seen these types of effects even after 6 years in the sun.



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