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>>By the time the "free" electricity has paid for the installation, you'll need to replace it.

You are going to have to back this up with credible citations. Otherwise it sounds like skepticism from 2008.



You're right, I ran the numbers years ago. I remain as skeptical as I am for roofing lifetime claims.


Impressive commitment to stale inference from dated data.


30 year solar panels haven't even passed 20 years yet.


Payback is considerably less than 20 years in most locations.


Are those subsidized costs?




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