How long do solar panels last, compared to the roof they are attached to?

Question

How long do solar panels last, compared to the roof they are attached to?

Answer 1

I think estimates are something like 30 years.

Answer 2

Ive been using the same solar panels for 15 years, have move a few times so they last a lot longer than the roofs weve had over us. I am teaching my kids how to build wind generators, because we keep having power failiures when the wind blows. and recently its got very windy. I charge banks of battery's and keep my office running from dc-ac converters.