The Sunbank G20P475 is a solar panel that produces up to 475 Watts of DC power at peak output. It is constructed with very high-efficiency mono-crystalline silicon cells, meaning that it requires an application of only 15.4 square feet in order to generate the same amount of power generated by a standard 56-cell panel. One of the features that make this panel unique is its "Power Optimizer" technology, which yields higher efficiency and output while allowing you to track performance of individual cells in order to optimize output. Additionally, it also has a wide operating temperature range, allowing it to be used in a variety of climates around the world. The G20P475 also comes with a 25-year warranty, showing the confidence that Sunbank has in this product.