Solar Charge Controller Sizing Sheet

To Calculate Solar Charge Control Needed

Fill in and print the solar charge control sizing work sheet below to determine
the correct size charge controller you need. For more information regarding
solar charge controls see (Charge Control Basics)

Solar Charge Control Sizing Sheet
1. Peak Amps produced by your solar module. You can determine peak amperage if you divide the module's wattage by the peak power point voltage, usually (17 to 17.5) ( see specs )
2. Total number of solar modules
3. Multiply line 1 by line 2. This equals your total Amps.
4. Choose a charge controller with an Amp rating no lower than Line 3.
5. If the possibility of increasing the overall capacity of your solar system is anticipated you may want to install a larger capacity charge controller.

Your next step is to calculate your Solar Inverter requirements.

Advance to Solar Inverter sizing work sheet.