However keep in mind that there are many factors at play here so this is really only a rough estimate.
Solar panel kwh output.
For solar to be affordable and useful we need lower prices with higher solar kw produced in a 24 period vs 750 kw for 15k.
My calculation tells me my return on investment would be about 17 years.
I won t be investing until the price is 50 or more on a 6kw system that produces only 750 kw.
How many solar panels do you need to produce 1 000 kwh per month.
5 hours x 290 watts an example wattage of a premium solar panel 1 450 watts hours or roughly 1 5 kilowatt hours kwh.
Based on the table we know that a 300 watt solar panel produces 36 5 kwh electricity per month.
I can use 750 kw in 10 days or less.
The higher the wattage of a solar panel the more electricity it can produce under the same conditions.
This will maximize the watts installed per square foot compensating the area limitation.
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.
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.
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.
On average a domestic solar panel has a power output of around 265 watts although it can range anywhere from as little as 225 watts to more than 350 watts.
Thus the output for each solar panel in your array would produce around 500 550 kwh of energy per year.
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.
A solar panel s output is expressed in watts.
If you have limited roof space the best recommendation is installing the most efficient solar panelsavailable.