Or 30 kwh 5 hours of sun 6 kw of ac output needed to cover 100 of your energy usage.
Solar roof kwh per day.
Multiply 5 hours of sunlight x 290 watts from a solar panel 1 450 watts or roughly 1 5 kilowatt hours per day.
If you have 33 panels assuming a 30 day month you will get 1 000 kwh per month.
So the kwh divided by the hours of sun equals the kw needed.
Assuming a 30 day month an electricity generation of 1 000 kwh is equivalent to 33 33 kwh per day if the site gets 6 peak sun hours per day you need 5 56 kilowatts since no energy conversion system is perfect you cannot assume the solar array will deliver its theoretical production.
That s about 500 550 kilowatt hours of energy per year from each panel on your roof.
On average a normal household will use around 37 kwh per day.
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.
However keep in mind that there are many factors at play here so this is really only a rough estimate.
If you have one 250 watt panel receiving four hours of sun then you will get 1 000 watts or one kwh per day from that panel.
If you have four panels you will get 4 kwh per day.
Let s say on a good day you average 5 hours of direct sunlight.
4 how does that compare to your annual energy usage.
Because of the variables pinning down exact numbers is tough.
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.