This is for a big system on my folks house: $90,316.45 after state rebate. 25yrs to repay, probably a bit less due to tons of free energy and me going easy on the avg bill. Their parents have one, it cost ~40k, and they sell back to the grid. Still we calc'd 20yrs to pay-off.

Like I said before there is Solar Power w/regular appliances and same-old living style or solar power off-grid with high efficiency electrics, 12v lights, and propane. This is the mix I`ll be going for.