Solar Panel Kilowatt Hour Calculator

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.

Solar panel kilowatt hour calculator.

If you re using 1400 kwh per month let s consider an average of 6 hours of sunlight per day this implies you would need 1400 6 30 7 7 kw at least every hour i e. Calculate solar system capacity. 1 000 watts x 10 hours per day 10 kwh per day check out our off grid load evaluation calculator. The first thing to do is to find out how many units of electricity you are consuming on an average monthly.

Our solar calculatorcan estimate the number of panels needed for your home. I have a 17 panel system each panel at 305w in las vegas and the calculation is right on the money. The fed tax rebate was 30 on the total install cost and nv energy rebated 1100. 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.

For instance if the surface area is 1 500 square meters and the rating of the panel is 250 watts you would divide 250 by 1 500 and then multiply by 100 to find the percentage. After estimating daily usage we need to consider which type of battery will work best as they have unique performance characteristics and are sized differently. The tool works by taking your average monthly energy usage in kilowatt hours kwh. You can use the table of solar power production per kw for each state above to do the same math for your state.

In the example above you would need 24 solar panels to account for 80 of your average consumption 29 6 kwh daily usage divided by 1 24 kwh per panel. Determine how many solar panels you ll need one solar panel produces about 1 24 kwh 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. 5 hours x 290 watts an example wattage of a premium solar panel 1 450 watts hours or roughly 1 5 kilowatt hours kwh.

An 8 10 kw system. You need to divide the number of watts at which the panel is rated by the total surface area of the panel. 2000 x 5 185 kw 10 370 kwh x 0 78 8089 kwh year x 0 12 kw 970 savings year.