Calculate Watt Hours Solar Panel

The first step in figuring out how many solar panels you need and what size of off grid solar power system will work for you is to know how much energy you use on a daily basis.

Calculate watt hours solar panel. 6 watt solar panel charging a 4 000mah 3 7v battery time 14 8wh 6 watts x 2 4 9 hours. The ultimate off grid solar watt hour calculator figure out how much solar you need. 5 hours x 290 watts an example wattage of a premium solar panel 1 450 watts hours or roughly 1 5 kilowatt hours kwh. 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.

The first step is calculating the kilowatts needed. 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. That s to account for all those variables we ve been going over. 1 000 watts x 10 hours per day 10 kwh per day check out our off grid load evaluation calculator.

Once you know the peak sun hours estimating the number of solar panels needed for 1 000 kwh is simple. We perform better than this on our own panels and battery combinations on clear sky days but this is a more realistic estimate for less than perfect days. Amp watt hour calculator system design tool. If you want to get an estimate of the number of solar panels required you need to leave the volts at 12.

What s that 75 percent for. Panel power in watts battery capacity in watt hours x 2. However you may notice that mostly during the summer seasons you may normally get around 10 hours of reasonable amount of sunshine but the winter season may produce roughly around 4 5 hours of effective sunshine. It can give you an estimate of your total power usage in either amp hours or watt hours.

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. 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. This amp watt hour calculator is provided to help you understand some basic electrical terms calculations. 1 000 watt hours 10 hours sunlight 100 watt solar panel.

Solar panel watts x average hours of sunlight x 75 daily watt hours. 250 watts x 5 hours x 75 937 5 daily watt hours. Calculate the current in amps by dividing power in watts by the voltage in volts.