I have seen some Chinese monocrystalline modules being offered with 30 year warranties. This means with < 1% annual degradation (as specified in warranty) no re

I have seen some Chinese monocrystalline modules being offered with 30 year warranties. This means with < 1% annual degradation (as specified in warranty) no reason well maintained installation can last even longer. I think life of a silicon based cell is no longer an issue, it is the perovskites that are a problem. If perovskites can be made to last longer, we can have very good tandem cells. Another issue is the thin film printed cells, which if they can last even a decade may become a game changer if can be manufactured cheaply enough and have > 10% efficiency.