System Sizer
Step 1
Determine your monthly usage from your bill. This is measured in kWh per month.
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.
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< 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'sWhat 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.
Looking for off-grid systems?
Visit our off-grid page. Click here for off-grid kits, FAQ's, and more.
Still have questions about how it all works?
Visit our learning center to find detailed articles, podcasts, videos, and more.
