• lewis6991@lemmy.world
    link
    fedilink
    English
    arrow-up
    1
    arrow-down
    1
    ·
    edit-2
    1 year ago

    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.

    • LoveSausage@lemmygrad.ml
      link
      fedilink
      English
      arrow-up
      2
      ·
      edit-2
      1 year 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…