Solar Roof Kwh Per Day

Let s say on a good day you average 5 hours of direct sunlight.

Solar roof kwh per day.

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. So the kwh divided by the hours of sun equals the kw needed. That s about 500 550 kilowatt hours of energy per year from each panel on your roof. However keep in mind that there are many factors at play here so this is really only a rough estimate.

4 how does that compare to your annual energy usage. Or 30 kwh 5 hours of sun 6 kw of ac output needed to cover 100 of your energy usage. The us ranges from about 4 hours 6 hours of sunlight per day on average see the below map. On average a normal household will use around 37 kwh per day.

Because of the variables pinning down exact numbers is tough. So how many square feet of your roof will your pv solar system cover. 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. Multiply 5 hours of sunlight x 290 watts from a solar panel 1 450 watts or roughly 1 5 kilowatt hours per day.

Let s estimate you get about five hours per day to generate that 30 kwh you use. If you have 33 panels assuming a 30 day month you will get 1 000 kwh per month.