Quote:
Originally Posted by x3sm
125k with installation? Including all necessary street lines? Also what is the shelf life on the batteries?
|
I'm not running any unusual lines from the street for this setup, so I did not include that in my solar/battery cost.
Yes, that price included install.
So, of that, the batteries are $7500 each (free install with solar roof), minus 26% tax rebate = $22,000.
Batteries are warrantied for 10 year, so that's their shortest possible life.
That is part of why I'm doing the charge when cheap, drain into grid when expensive thing, though-- batteries do age out, so they need to pay for themselves before then. At $8.60/day, I'm break even on the batteries in 7 years, so everything beyond that is gravy.
I expect them to be considerably cheaper by the time they need replacement:
I think it's also reasonable to compare the battery expense to a whole home generator, which never breaks even, requires service, requires fuel, and is annoying when running (though much less annoying then not having power)... and, in my experience, often doesn't actually turn on when needed.