System Sizer

Step 1

Determine your monthly usage from your bill. This is measured in kWh per month.


Step 2

Find Your Sun Hours.


Click to Enlarge

Step 3

Enter your information in the fields below.

Monthly electrical use
(average the kWH on your bill)

kwh per month

Monthly electrical bill
(average of your monthly bills)

$


Percentage of your usage you want to cover with solar power*
%
Monthly electric bill


Average peak sun hours for your location
(avg 6 in Sun Belt, 4in NE / NW)*
sun hours




Manual System Sizing Tool

Using the amount monthly kWhs from your utility bill, and the amount of sun hours your location receives, you can find the size of your system, in DC watts, needed to cover 100% of your usage. For a list of current kit prices please visit our grid tie kits page.


< 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
50kWh 0.7kw 0.6kw 0.5kw 0.5kw 0.4kw 0.4kw 0.3kw 0. kw
100kWh 1.4kw 1.2kw 1.0kw 0.9kw 0.8kw 0.8kw 0.7kw 0.6kw
150kWh 2.0kw 1.7kw 1.5kw 1.4kw 1.2kw 1.2kw 1.0kw 0.9kw
200kWh 2.7kw 2.3 kw 2.0kw 1.8kw 1.6kw 1.6kw 1.4kw 1.2kw
250kWh 3.4kw 2.9kw 2.5kw 2.3kw 2.0kw 2.0kw 1.7kw 1.6kw
300kWh 4.1kw 3.5kw 3.0kw 2.7kw 2.4kw 2.4kw 2.0kw 1.9kw
350kWh 4.7kw 4.1kw 3.5kw 3.2kw 2.8kw 2.8kw 2.4kw 2.2kw
400kWh 5.4kw 4.6kw 4.1kw 3.6kw 3.2kw 3.2kw 2.7kw 2.5kw
450kWh 6.1kw 5.2kw 4.6kw 4.1kw 3.6kw 3.6kw 3.0kw 2.8kw
500kWh 6.8kw 5.8kw 5.1kw 4.5kw 4.1kw 4.1kw 3.4kw 3.1kw
550kWh 7.4kw 6.4kw 5.6kw 5.0kw 4.5kw 4.5kw 3.7kw 3.4kw
600kWh 8.1kw 6.9kw 6.1kw 5.4kw 4.9kw 4.9kw 4.1kw 3.7kw
650kWh 8.8kw 7.5kw 6.6kw 5.9kw 5.3kw 5.3kw 4.4kw 4.1kw
700kWh 9.5kw 8.1kw 7.1kw 6.3kw 5.7kw 5.7kw 4.7kw 4.4kw
750kWh 10.1kw 8.7kw 7.6kw 6.8kw 6.1kw 6.1kw 5.1kw 4.7kw
800kWh 10.8kw 9.3kw 8.1kw 7.2kw 6.5kw 6.5kw 5.4kw 5.0kw
850kWh 11.5kw 9.8kw 8.6kw 7.7kw 6.9kw 6.9kw 5.7kw 5.3kw
900kWh 12.2kw 10.4kw 9.1kw 8.1kw 7.3kw 7.3kw 6.1kw 5.6kw
950kWh 12.8kw 11.0kw 9.6kw 8.6kw 7.7kw 7.7kw 6.4kw 5.9kw
1000kWh 13.5kw 11.6kw 10.1kw 9.0kw 8.1kw 8.1kw 6.8kw 6.2kw
1050kWh 14.2kw 12.2kw 10.6kw 9.5kw 8.5kw 8.5kw 7.1kw 6.5kw
1100kWh 14.9kw 12.7kw 11.1kw 9.9kw 8.9kw 8.9kw 7.4kw 6.9kw
1150kWh 15.5kw 13.3kw 11.6kw 10.4kw 9.3kw 9.3kw 7.8kw 7.2kw
1200kWh 16.2kw 13.9kw 12.2kw 10.8kw 9.7kw 9.7kw 8.1kw 7.5kw
1250kWh 16.9kw 14.5kw 12.7kw 11.3kw 10.1kw 10.1kw 8.4kw 7.8kw
1300kWh 17.6kw 15.0kw 13.2kw 11.7kw 10.5kw 10.5kw 8.8kw 8.1kw
1350kWh 18.2kw 15.6kw 13.7kw 12.2kw 10.9 kw 10.9kw 9.1kw 8.4kw
1400kWh 18.9kw 16.2kw 14.2kw 12.6kw 11.3kw 11.3kw 9.5kw 8.7kw
1450kWh 19.6kw 16.8kw 14. kw 13.1kw 11.7kw 11.7kw 9.8kw 9.0kw
1500kWh 20.3kw 17.4kw 15.2kw 13.5kw 12.2kw 12.2kw 10.1kw 9.3kw
1550kWh 20.9kw 17.9kw 15.7kw 14.0kw 12.6kw 12.6kw 10.5kw 9.7kw

800.810.9939

» Get A Personalized Quote » Calculate Your System Size » Solar FAQ's

What is Residential Solar?

There are many terms for a residential solar energy system, such as grid-tie (tied into the energy grid), residential solar, and home solar. They all mean the same thing: a solar electric system that provides clean and renewable power from the sun.

Get Started with Solar

Step 1

Determine your usage from your bill.

Step 2

Have one of our experts design a custom system or select a kit.

Step 3

Find an installer in your local area.

Still have questions about how it all works?

Visit our learning center to find detailed articles, podcasts, videos, and more.