Kallog
That 10 year payback period you mentioned before, and which I've heard elsewhere too, is probably for selling power of any sort, which would be safe from changes in public opinion about renewable energy, safe from oversupply of that product, and applicable to other states and countries.
I believe I said in 4 years the system would pay for itself.
I was wrong.
its more like 2.6 years !!!
then its money in your pocket to buy other products with.
suppose I bought a 6 kW system and installed it on my roof top.
and instead of paying the DOE estimate of $15.00 per watt
I only pay $1.37 per watt as shown in the above link.
my initial investment for the 6 kW pannels is $8220.00
assumming that I get 8 hours a day of 6 kW for everyday of each year.
6 kW x 8 hours x 365 days = 17,520 kWh's per year.
the electric company credits me for 3,153.60 each year.
$8,220.00 / 3,153.60 = 2.60 years
after the initial 2.6 years for the remaining 23.4 years of the 25 year lifetime of the pannels I would be getting FREE ENERGY LOL.
