To calculate the size of your solar array you will need to first go through your records and find the average KW usages for the last 12 months.  Input that number into field #1.  Then you will need to look at the Solar Maps page and find your average winter sun exposure for your area, input this value into field 2.  That's it! Hit calculate, and the calculator will tell you how many solar panels you need!

Your Average
Monthly KW Usage

Your
Sun Hours

3.

Array
Killowatts =

1.
2.

You Will Need

Now that you know how many solar panels you will need, you probably want to know how much it will cost right?  Use the calculator below to find the cost of your solar array!  Input the number of panels from the table above, and hit calculate!   That's it! 

# of panels: Total Cost*
$.00*

*These numbers are based on the Solarex SX-120 120 watt solar panels now priced at $565.00 ea.  There are of course quantity discounts not calculated into the Total Cost, depending on the actual purchase.   Cost only indicates the cost of the solar panels, and does not include other items such as freight, panel mounts, wiring, inverters, permitting or other costs.   Solar panels only.  For a complete system analysis, and cost quotation for a full system, please contact us toll free, 1-877-367-3925, e-mail us, or utilize our online live-help support.

California Residents!

Want to know how much money you could get back from the state of Califonia?

Number of panels

Total Cost

 $
Rebate: $*

*or half of total cost

 $*

*Whichever is the lesser value

Scripts basis provided by Website Abstraction