12 K solar system?

[StillHope]

I got the estimate and details.
It looks like it's close to 15K with the permit.

Here's the details :

" (1) Outback transformer =$585
(1) Outback mate =$285
(1) Outback 3048 inverter =$1,850
(1) Midnite DC box with breakers =$720
(4) BP 175 watt panels @ $835 each = $3,340
racking for panels = $260
(8) Rolls/Surrettes S530 batteries,7 year
warranty, 400 Amp Hour @ $385 each =$3,080
Cables for batteries, inverter = $465
Outback combiner box with breakers = $152
Labor, wires, conduit, misc. hardware = $ 1,285

Sub Total = $12,022
Tax = $500.95
Total = $12,522.95

Please add $2,000 if you want a permit on this system, as that will require engineered drawings, electricical contractor involvement, special grounding lugs, grounding (GFI) breaker, special cables for the batteries, etc.
This system should supply a nice amount of power (2.24 KWH/day).
Wiring the pump would cost extra.
This system supplies pure sinewave 120/240 VAC power."


Frankly speaking,I have absolutely no idea about all that tech stuff.

But it will take at least 10 years with my energy spending for the system to pay for itself.

Any thoughts?