When I did my solar install I made a spreadsheet that calculated payback time that included the State and Federal incentives. It turned out that there was a "sweet spot" where you get the most bang for your buck. For me that was around 7.5kw system. This is mostly based on the credit maximums. My state was $2000 at the time.
If you figure that your base connection costs are always going to be there, the sizing isn't as critical so long as it cuts the top off of your usage curve it will lower your bill substantially. This assumes that your local electric company won't pay you for generation above your usage.
As far as resell value; we had our home re-appraised about 6 months after the solar and the guy told me that because their is demand from home shoppers that they now calculate it into the home's value. He added about $20k to ours for the solar system. I'm guessing that this my be area dependent.
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2013 Volt Blackbird
2013 Volt Red
(Sold 2012 Leaf)
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Please don't use photobucket... there are a ton of good posts on here that make no sense because the picture is locked by photobucket's paywall.
Last edited by Roostre; 02-14-18 at 07:19 AM..
Reason: add clarity
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