However keep in mind that there are many factors at play here so this is really only a rough estimate.
Average kwh per square foot solar panel.
Sizing a solar panel system to your home s electric usage can be done by taking look at your energy bills over a year.
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.
That translates to just over 15 watts per square foot.
For the sake of example if you are getting 5 hours of direct sunlight per day in a sunny state like california you can calculate your solar panel output this way.
This size of solar panel layout will only take about 350 400 sq.
In order to find a range for number of solar panels we compared arizona and maine s solar panel production ratios 1 31 and 1 61 the highest and lowest in the u s.
The cost of solar panels to power your house are 4 to 10 per square foot.
You can use the table of solar power production per kw for each state above to do the same math for your state.
5 hours x 290 watts an example wattage of a premium solar panel 1 450 watts hours or roughly 1 5 kilowatt hours kwh.
The amount of energy that solar panels can absorb and then produce is measured in kilowatts kw.
The national average cost of a solar panel is around 2 98 watt.
On average a normal household will use around 37 kwh per day.
The amount of energy your home uses over a certain timeframe say a month is measured in kilowatt hours kwh.
Below are cost estimates based on home size.
Given 1kw of panels produces 1642 kwh per year in ca and 1kw of panels takes up 68 42 square feet solar panels installed in california on average produce 23 99 kwh kilowatt hours per square foot per year.
How many solar panels are needed to power an average house.
So if you have solar panels that each produce 1 kwh of power per day you would need a full 37 solar panels to fully power your home.
The average sized solar panel takes up an area of 17 6 square feet and produces 265 watts under direct sunlight.
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.
Said differently the average american household consumes just under 11 000 kwh per year.