Well, I found this article with a nice infographic. Considering panels are mostly made out of glass it's not very difficult to recycle 95% of the materials.
That’s why I don’t recommend either, but instead decycling them.
After what percentage of deficiency does solar become unviable? I’ll gladly take panels off anyone’s hands that have lost 75% of their efficiency and hodge-podge something together. If we lose 20% after 25 years, when do we lose 75%+?
