There are three main types of solar panels:
Monocrystalline solar panels: These panels are made from a single crystal of silicon and are considered the most efficient and durable type of solar panel. They have a uniform black color and a higher power output per square foot than other types of panels. They are also the most expensive type of solar panel.
Polycrystalline solar panels: These panels are made from multiple crystals of silicon and are slightly less efficient than monocrystalline panels. They have a speckled blue color and are less expensive than monocrystalline panels.
Thin-film solar panels: These panels are made by depositing layers of photovoltaic material onto a substrate, such as glass or metal. They are less efficient than crystalline panels but are more flexible and can be used in a wider variety of applications. They are also less expensive than crystalline panels.
There are also other less common types of solar panels such as amorphous silicon solar panels, concentrated solar panels, and hybrid solar panels which combine different types of solar technologies.