What is AC capacity? What is DC capacity?

What is AC capacity? What is DC capacity?

Solcast Products

Grid Aggregations
Typical Meteorological Year (TMY)
Geographic Horizon Angles


Modelling - FAQsModelling - FAQs

Solcast API

Third Party Applications

Hobbyists and Researchers

Troubleshooting and FAQs

FAQsFAQsTroubleshooting Data ErrorsTroubleshooting Data Errors

Useful Links

Postman API (Spec) Documentation

API Change LogAPI Change LogSubscription ManagementSubscription ManagementAccount FAQs

AC/DC capacity in home solar panels

Understanding how to tell the difference between AC Capacity, DC Capacity, and what that means for your home solar setup.
What is my AC capacity? What is my DC capacity? What is the difference between AC and DC? How do I find these values?

Don't worry, this is easier than you think!

AC Capacity

The AC capacity is the size of your inverter, in Watts.  You can simply inspect your solar inverter, to determine the wattage.  If you have more than one inverter, add up the total wattage from all inverters to determine your AC capacity.  Most inverters report capacity in kilowatts (kW), so be sure to convert to watts by multiplying by 1000.

DC Capacity

The DC capacity is the total wattage of all of your solar panels. You'll need to figure out what the 'rating' of your solar panels is, and then sum up the total of all the solar panels in your solar array. The value should be provided in Watts.

If you don't know or can't easily find out these values by inspecting your PV system, you should consult the paperwork from your installation or contact your solar installer to figure them out.