Solar panels are often categorized based on their wattage, which is the amount of solar power they can potentially capture and convert into electricity. So, you may see references to 200-, 250-, 300-, ...

There are plenty of options for wattage in the solar panel market (including 200-, 250-, 300- and 500-watt panels), but 400-watt panels are one of the most common choices you'll see in use on homes ...