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.
Flat roof square feet per kw solar 100 per kw.
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 solar roof tiles cost 2 85 per watt and the inactive shingles cost 5 60 per square foot.
This will maximize the watts installed per square foot compensating the area limitation.
That s about 500 550 kilowatt hours of energy per year from each panel on your roof.
4 how does that compare to your annual energy usage.
The actual total cost of a tesla solar roof will depend on the size of your home and your monthly energy usage.
Dividing 8 400 by 119 185 kwh we find your costs will be around 0 07 per kwh.
Each panel measures around 1 6m x 1m so you ll need at least 656m2 of roof space.
5 hours x 290 watts an example wattage of a premium solar panel 1 450 watts hours or roughly 1 5 kilowatt hours kwh.
Each solar installer has sophisticated software that can spell out your house s exact power needs while looking at historical weather patterns roof angles and other factors to tell.
With the average us utility charging 0 13 per kwh and that price rising 2 6 each year on average you ll be immediately saving money pretty much anywhere you install as long as your utility offers net metering.
In fact many states local governments.
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.
Let s say on a good day you average 5 hours of direct sunlight.
You can use the table of solar power production per kw for each state above to do the same math for your state.
A size comparison of commercial solar systems can be viewed here.
How much power does a 100kw commercial solar pv system generate.
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.
If you have limited roof space the best recommendation is installing the most efficient solar panels available.
Multiply 5 hours of sunlight x 290 watts from a solar panel 1 450 watts or roughly 1 5 kilowatt hours per day.
Thus the output for each solar panel in your array would.
Finding out how efficient solar panels are.
How much energy does a solar panel produce.
Considering 6 peak sun hours per day and 300 watt panels you need 16 to produce 700 kwh each month.
Tesla estimates that a 10kw solar roof will cost a total of 33 950 including incentives.
Installing a solar panel system costs an average of 23 597 and dropping most homeowners pay between 16 532 and 30 820 expect to pay 2 50 to 3 50 per watt with most systems in the 3kw to 10kw range until the end of 2020 you can deduct 26 of the installation costs with the federal investment tax credit itc.
