Solar Means Business in the Midwest

November 20, 2018

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2 Responses to “Solar Means Business in the Midwest”

  1. Gingerbaker Says:

    This project has a 4.5 year pay-back period. Impressive.

    What is weird is that, once again, you see the longevity of PV listed as “20+ years”. It is my understanding that modern PV panels come with a warranty that is now longer than 20 years. And degradation rates consistent with a 100+ year lifespan.

    Seriously, the top brands of crystalline PV have degradation rates that imply a 125 year lifespan. And that is defined as when they ‘only’ put out 80% of their original rated output. 80% is still a heck of a lot of output.

    Seems to me that longevity is the most interesting and crucial economic question. How long will these panels really last? The crystalline part is 125 years. How long will the internal electronics hold up? How long could they hold up if optimized for longevity is the $64,000 question.


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