Offgrid Solar PV System Calculator
Total Watt Hours per day:
How many days of backup power do you want in case of cloudy/rainy days?
Battery Bank Capacity: watt hours
Select a battery bank voltage:
Battery Bank Capacity: amp hours
Solar Panel/Controller Sizing
This calculator helps you size the solar panel(s) and charge controller(s) needed for your system.
You need to determine the average number of sun hrs per day.
Manually enter the average sun-hours for your location.hours
The total wattage of Solar Panels that you need is:Watts, or kilowatts
This value takes into account losses due to system inefficiencies.
How many solar panels do you need? That depends on the panel you choose.
Select the wattage of the panel your interested in, and see the results below:watts per panel
You will need panels for a total of watts.
You will need a charge controller that can handle at least amps
Sizing a charge controller can be complex, the above answer is a conservative estimate. Please feel free to call us to find a more accurate fit for your needs.