System size kw square footage needed for low efficiency 16 square footage needed for medium efficiency 18 square footage needed for high efficiency 22 5 kw.
Flat roof square feet per kw solar.
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.
The actual total cost of a tesla solar roof will depend on the size of your home and your monthly energy usage.
Number of solar panels per square foot of roof space.
So how many square feet of your roof will your pv solar system cover.
The yearly savings and income will depend primarily on the cost of electricity displaced and the of electricity used on site.
They are rarely sold by the square foot.
In order to calculate the below data we averaged annual kwh production in the top 12 solar states and assumed standard 250 watt panels in order to calculate how many panels you would need.
The average system size in the u s.
Is 5kw 5000 watts so you can use that as a benchmark if you re unclear on what your power needs will be.
Considering 6 peak sun hours per day and 300 watt panels you need 16 to produce 700 kwh each month.
That s about 500 550 kilowatt hours of energy per year from each panel on your roof.
Tesla estimates that a 10kw solar roof will cost a total of 33 950 including incentives.
The solar roof tiles cost 2 85 per watt and the inactive shingles cost 5 60 per square foot.
4 how does that compare to your annual energy usage.
Will that many panels actually fit on your roof.
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.
What s the cost of solar panels per square foot.
Instead most retailers and pros sell panels by the watt.
You can expect to pay between 1 and 3 per watt.
Home the estimated electricity consumption is 700 kwh.
Multiply 5 hours of sunlight x 290 watts from a solar panel 1 450 watts or roughly 1 5 kilowatt hours per day.
Because of the variables pinning down exact numbers is tough.
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.
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.
So each kw installed will.
Let s say on a good day you average 5 hours of direct sunlight.
When dividing these values you obtain 0 35 kwh per square foot assuming 0 35 kwh for a 2 000 sq.
As an average each kwh will be worth around 11 5p per kwh and each kw installed will yield 890 kwh every year.