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[–] 1 point 2 years ago (1 child)

Minimum warranty for good solar panels at 90% is 30 years , they will last 60 (no one knows exactly) albeit not as efficient.

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  • [–] 0 points 2 years ago* (last edited 2 years ago) (1 child)

    I just had some installed. Guaranteed 80% efficiency for 20 years. I heavily doubt they will last 60 years.

    Had energy storage installed as well. Only guaranteed 90% (~4500 cycles) for 10 years.

    EDIT: double checked the data sheet. They are actually 86% for 25 years with a rated 0.5% per year degradation rate.

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  • [–] 2 points 2 years ago* (last edited 2 years ago)

    Quite sure mine had 30 years at 90 % . But it was the really good mono ones. Storage is a completely different story. But hey even if they are down to 25% I would keep them and just add new ones.

    0.5 would mean 30 for 60 years also..

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