What information do I need for solar capacity calculations in permitting?

Required Information for Solar Capacity Calculations

To ensure a smooth permitting process, it’s essential to provide accurate and detailed information about your solar system’s capacity. This includes the wattage rating of each solar panel, which can typically range from 300 to 400 watts per panel. For example, if you’re using 20 panels with a 350-watt rating each, your total system wattage would be 20 x 350 = 7,000 watts.

Calculating System Voltage and Ampacity

In addition to wattage, you’ll also need to provide information about your system’s voltage and ampacity ratings. The voltage rating of your system will depend on the type of equipment being used, but common residential solar systems operate at 24 or 48 volts. To calculate your system’s ampacity, you’ll need to divide your total wattage by your system voltage. Using the example above, if your system operates at 24 volts, your ampacity would be 7,000 watts / 24 volts = 291.67 amps.

Equipment-Specific Information

When calculating your solar system’s capacity, it’s also essential to provide information about the specific equipment being used. This includes the type and rating of your inverter, which converts DC power from your solar panels to AC power for your home. You may also need to provide information about any other components, such as charge controllers or mounting hardware. Providing detailed information about your equipment will help ensure that your solar system meets local building codes and regulations.