How Many Solar Panels For The Average Home

The number of panels you need for your house depends on factors like location and panel performance.

How many solar panels for the average home.

As we mentioned before don t assume your home is automatically the average. Previous article how much does an acre of solar panels cost. A 10kw solar system which consists of 40 panels can produce an average of 14 000 kwh per year. If you multiply that by 30 you get 38 4 kwh per month and that s just one solar panel.

The exact number changes depending on the specifications of the chosen panel model as well as the sunshine available at the project site. A typical 7 2 kw system would require 20 solar panels if 360 watt solar panels were used. But as you can see from the data above how much electricity your house uses depends on everything from your local climate to how many televisions you have. Depending on where you live the average 3 000 sqft house will need between 17 and 26 premium solar panels to supply 100 of its electricity needs.

Kilowatt hours kwh are a measure of total electrical energy used or produced over a period of time. Keep in mind that the amount of power your solar system can produce depends on how much sunlight your roof receives and your location. Assuming a homeowner used the national average of 911 kwh per month they would need about 24 solar panels to supply their house with electricity. You will need a roof space of about 680 sq ft for a 10kw system.

To find this number nrel studied the residential solar market in california and found that the average solar installation hovered around 5 6 kilowatts kw equal to about 21 solar panels with a national average cost of 2 93 watt. An average homeowner needs 28 to 34 solar panels to fully offset their electricity bill with solar.