Estimate Your Energy Usage

Solar 101

Why Solar - How It Works - FAQs - Benefits - System Sizer - Get Started

System Sizing Tool

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*

%

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

sun hours
Select a Manufacturer

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.

	< 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