Our "large" solar panel category (click here for small solar panels) includes solar panels generally over 200 watts. Over the years this category has grown substantially as technology and applications have evolved. 12-volt modules used to be more common when 12-volt battery systems were a common application. 24 and 48-volt battery systems are very common today, so panels became bigger by putting more solar cells in series in a panel. So a 36 cell 12-volt nominal panel has grown into a 72 cell 24-volt panel. As cell sizes grew larger, smaller 60 cell panels (approximately 20 volts nominal) became popular for their handling ease.
Technology has also evolved to squeeze more watts out of the same footprint, meaning that panels continue to become more efficient. It's easy to get caught up efficiency numbers. While they are a helpful measure of comparing one panel with another, they are particularly important if space is an issue. But because higher-efficiency typically costs more, less efficiency will often be fine with many applications. Some items you may need to include in your solar powered system or solar battery charger alongside our powerful solar panels include charge controllers, battery boxes, panel mounting, and inverter accessories for fixed or portable power.
Our portfolio of large panels "cover the bases" when it comes to purchasing criteria for larger solar panels. Want solar panels for sale that are made in the USA? We have long carried SolarWorld that makes panels right here in America. Need high-efficiency? The Solaria line offers some of the highest efficiency 60 cell panels for those with precious, limited space on their roofs. Need the max value for the lowest price? Our newer, popular line of Italy-made panels from Peimar and tried-and-true lines from Canadian Solar are for you! Need C1D2? Hello Ameresco! We have large and small solar resources for industrial, home solar, down to RVs, sprinter vans and boats well. In some cases, we can help you figure out what kind of tax credit you'll be able to claim with your solar project. We continue to evaluate and grow our large panel brands, so check back often or ask for more info on any of our solar panels for sale. When you're ready to buy solar panels, call us at 1-800-766-7644.