Using 4 hours of full sun gives you this equation.
How much kwh does a solar panel produce 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.
Assuming a 30 day month an electricity generation of 1 000 kwh is equivalent to 33 33 kwh per day if the site gets 6 peak sun hours per day you need 5 56 kilowatts since no energy conversion system is perfect you cannot assume the solar array will deliver its theoretical production.
That s enough energy to power some small appliances without too much issue but if you want to cover the energy used by your property s climate control systems or large cooking appliances you ll need more solar panels.
To figure out how many kilowatt hours kwh your solar panel system puts out per year you need to multiply the size of your system in kw dc times the 8 derate factor times the number of hours of sun.
250 watts x 4 hours.
If we take california as an example the map shows that on average 1 kw of dc peak capacity of solar panels produces 4 5 kwh per day or 1642 kwh per year.
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.
How much energy does a solar panel produce per square foot.
However keep in mind that there are many factors at play here so this is really only a rough estimate.
That s 1 kwh 1 000 watts in a day per 250 watt panel.