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.
How much power does a solar panel produce in a day.
However keep in mind that there are many factors at play here so this is really only a rough estimate.
A common size solar panel array is usually around 5kw and takes up around 400 square feet of space.
How much energy does a solar panel produce.
This is called the nameplate rating and solar panel wattage varies based on the size and efficiency of your panel.
An array of this size can produce an average of 350 850 kwh of ac energy per month.
So we can say one solar panel approximately produces 1 33 units of electricity in a day 40 units of electricity in a month and 480 units of electricity in a year.
Typically a modern solar panel produces between 250 to 270 watts of peak power e g.
250wp dc in controlled conditions.
On average a normal household will use around 37 kwh per day.
Therefore it is very possible to generate enough energy to cover 100 of your needs.
To put that into perspective a typical household uses about 897 kwh per month.
For example if you have a 100 watt solar panel then its output will be 10 of what the calculator shows per kilowatt.
1 kw of solar panels is equal to 3 solar panels each of 330 watts.
There are plenty of solar calculators and the brand of solar system you choose probably offers one.
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.