Yes, that is a conservative estimate. The warranty on my Sharp panels is 25 years...they are expected to last longer. Though, as I understand it, the output of

Yes, that is a conservative estimate. The warranty on my Sharp panels is 25 years...they are expected to last longer. Though, as I understand it, the output of panels does degrade over time; I don't know by what mechanism that degradation happens. And, there are electronic components in the whole configuration that may not last forever due to corrosion.