Assuming a 30 day month an electricity generation of 1 000 kwh is equivalent to 33 33 kwh per day.
How many kilowatt hours does the average solar panel generate.
So the kwh divided by the hours of sun equals the kw needed.
Again though these are just rough estimates.
So take 900 kwh and divide by the amount of kwh one solar panel produces over the course of a month 30kwh and you get a 30 panel installation.
Let s estimate you get about five hours per day to generate that 30 kwh you use.
30 panels x 250 watts per panel equals a 7 500 watt system 7 5kw.
The first step is calculating the kilowatts needed.
You must simply divide the average daily kwh by the peak sun hours.
How much energy does a solar panel produce.
However keep in mind that there are many factors at play here so this is really only a rough estimate.
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.
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.
An average residential solar panel size today is about five and a half feet by three feet.
Remember if you are receiving an average of four hours of usable sunshine per day and your solar panel is rated at 250 watts of power then you will need forty panels to reliably generate 1 000 kwh per month.
Or 30 kwh 5 hours of sun 6 kw of ac output needed to cover 100 of your energy usage.
Typically homeowners in the united states use about 900 kwh a month on average.