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I think we're already there for regular PV. It's getting to the point where a home system will almost pay for itself in less than 10 years.


I'm thinking 3 months would be ideal


Very few things have a return that quickly. In an era of 25 year mortgages, a 10 year payback is very reasonable.


Let's make these one of the few things that have a return that quickly.


That’s unlikely to ever happen; if it’s that cheap to produce electricity the utilities will have long since switched over and cut rates.


Ideal, I guess. Though I don't see how that could ever be possible.




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