How Many Solar Panels Per Square Ft

However average values can be calculated from official data.

How many solar panels per square ft.

Estimating the number of panels based on home area is an indirect approach since you must assume the kwh consumption. Some homes have more efficient appliances and habits also influence electricity usage. Compare solar quotes on the energysage marketplace customized to your property and energy needs. An average homeowner needs 28 to 34 solar panels to fully offset their electricity bill with solar.

If you used the solar nerd calculator you ll have an estimate of how many solar panels you need to generate all of your electricity but then the question is. Will that many panels actually fit on your roof. The number of panels you need for your house depends on factors like location and panel performance. Map of solar radiation in the united states nrel the ranges we give between 19 and 30 premium solar panels to generate enough electricity for an average 3 000 square foot house were calculated based on houses located in the cloudy northwest such as seattle washington and the very sunny southwest like mesa arizona.

But at 20 watts per square foot a system rated to produce 2 kilowatts would cover roughly 150 square feet while a 3kw system would take up about 225 square feet. Based on our calculation above we know that this same system measures at 352 square feet which works out to a weight of 2 3 pounds per square foot 800 pounds 352 sq ft. You might know the square footage of your house but that doesn t tell you the area of roof that s available to fit solar panels.