How Many Solar Panels Needed For A Kilowatt Of Power

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

How many solar panels needed for a kilowatt of power. Updated june 25 2020 a typical american home will need 14 36 solar panels to cover their power bill and at least 227 square feet of rooftop space to accommodate the solar panels. The exact number changes depending on the specifications of the chosen panel model as well as the sunshine available at the project site. Always round this off to the higher number. Follow along to calculate the amount of solar panels your specific home will need.

In the example above you would need 24 solar panels to account for 80 of your average consumption 29 6 kwh daily usage divided by 1 24 kwh per panel. Compare solar quotes on the energysage marketplace customized to your property and energy needs. For this system you would need seven 75 watt solar panels and four 300 amp hour batteries. Using the 2400 daily watt hour figure from the above example you would divide the 2400 by 375 and need 6 4 panels.

To figure out how many kilowatt hours kwh your solar panel system puts out per year you need to multiply the size of your system in kw dc times the 8 derate factor times the number of hours of sun. If you were using 200 watt panels you would need only three panels and four 300 amp batteries. So if you have a 7 5 kw dc system working an average of 5 hours per day 365 days a year it ll result in 10 950 kwh in a year.