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.
Solar panel annual kwh production.
Thus the output for each solar panel in your array would produce around 500 550 kwh of energy per year.
This type of solar system would be able to produce 1 kwh per hour of sunlight or 5 kwh per day.
Each solar panel is also 200 watts per panel.
On average a normal household will use around 37 kwh per day.
So if you have a 7 5 kw dc system working an average of 5 hours per day 365 days a year it ll result in 10 950 kwh in a year.
No shading from trees or other buildings.
Each solar panel can be expected to produce between 400 and 600 kilowatt hours per year.
The exact electricity production depends on the panel specifications and the amount of sunshine received.
5 hours x 290 watts an example wattage of a premium solar panel 1 450 watts hours or roughly 1 5 kilowatt hours kwh.
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.
20 panel solar system.
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.
5 hours of average sunlight per day all year long.
Smart design decisions can also improve the productivity of a solar power system.
You can use the table of solar power production per kw for each state above to do the same math for your state.