Calculate Solar Panel Output Per Day

How to calculate solar panel output here s a simple formula for calculating your solar panel s power output.

Calculate solar panel output per day.

This solar panel output calculatorhelps you estimate the real daily energy a k a. 5 hours x 290 watts an example wattage of a premium solar panel 1 450 watts hours or roughly 1 5 kilowatt hours kwh. So the kwh divided by the hours of sun equals the kw needed. You must simply divide the average daily kwh by the peak sun hours 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.

Or 30 kwh 5 hours of sun 6 kw of ac output needed to cover 100 of your energy usage. Increase the system size in the calculator above to see how big your system would need to be to create an annual amount of kwh solar energy similar to or bigger to the amount of kwh you consume. The first step is calculating the kilowatts needed. Solar power as a function of time in kwh or wh that your solar panel can produce taking into account its rated power and solar energy available at your place.

For example in the us the average amount of full usable sunlight per day is about 4 hours. Please have a look at your average annual consumption number in kwh which you wrote down from the previous page. 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. Solar panel watts x average hours of sunlight x 75 daily watt hours as an example let s say you have 250 watt solar panels and live in a place where you get 5 hours of sunlight per day.

At 18 7 efficiency that s 0 898 kwh m day. 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. The us ranges from about 4 hours 6 hours of sunlight per day on average see the below map. Let s call it 4 75 kwh m day.