Solar panels collect and convert the sun’s energy into electricity. They are a key component of a solar panel system. Most commonly available panels today are either poly-crystalline or mono-crystalline solar panels.

The key differences between poly- and mono-crystalline panels are in efficiency and cost. Typically, mono-crystalline panels are more efficient (and thus more expensive) than poly-crystalline panels.

Not all panels are created equal: How to evaluate your solar panel options
To find the right solar panels for your home and your wallet, there are a variety of criteria to keep in mind, including product quality, durability, and long-term performance.