A peak sun hour is the equivalent of the sun shining at an intensity for 1 000 kw per square meter for one hour expressed as 1 kwh m.
Solar panel power output per hour.
5 hours x 290 watts an example wattage of a premium solar panel 1 450 watts hours or roughly 1 5 kilowatt hours kwh.
Now let s look at.
It is equivalent to 1000 watts 1 kw of continuous power production over 1 hour.
If that panel received full sun for one hour you d get 250 watt hours of electricity.
When we measure a solar panel s output over time we use the unit kilowatt hours kwh.
Therefore to figure out how much power the panel produces in a day simply multiply the 250 watts by 4 hours which comes to 1000 watts 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.
So the kwh divided by the hours of sun equals the kw needed.
Just as in the chart above peak sun hours are.
What is the solar panel output of different modules based on their wattage rating.
The us ranges from about 4 hours 6 hours of sunlight per day on average see the below map.
With 4 panels you d get a kilowatt hour.
Let s estimate you get about five hours per day to generate that 30 kwh you use.
In the picture above the label shows an stc rating of 250 watts for the panel.
If you know the average daily peak sun hours for your location you can calculate the kwh your solar panels will make on a daily monthly and yearly basis.
Or 30 kwh 5 hours of sun 6 kw of ac output needed to cover 100 of your energy usage.