1. Figure What You Spend Now

If you don't know off the top of your head, it's easy to find out what you spend on electricity. The easiest way is to call your electric utility and ask how much you spend in dollars, and how many "kilowatt-hours" you use per year.

Write these down: $____________ per year    ______________kwh per year

2. Find Your Zone

Each Solar in a Box Unit produces about this many killowatt-hours of electricity on average:

                        Per Month         Per Year

Zone 3              112 KWH         1,340 KWH
Zone 2              135 KWH         1,620 KWH
Zone 1              155 KWH         1,860 KWH