Polycrystalline solar panels are the most common type of solar panel. These panels are made up by pressing multiple pieces of silicon together. Polycrystalline solar panels usually have a blue mottled look.

The efficiency rate of a polycrystalline solar panel is around 16%-17%. These panels are best to work under extreme weather conditions. Polycrystalline panels are slightly less efficient than monocrystalline but they are cheaper which makes them a popular choice.

Monocrystalline solar panels are the second most successful type of solar panel. These panels have blackish-hue on their surface. Monocrystalline solar panels are made by a single silicon crystal. Monocrystalline panels have solar cells in a more rounded shape with their corners cut off.

Monocrystalline solar panels tend to be more efficient than polycrystalline solar panels. Their efficiency rating is around 19%-20% because the solar cells have high purity. These solar panels are the best solar panels with the best purity and highest efficiency levels.

Bifacial solar modules offer many advantages over traditional solar panels. Power can be produced from both sides of a bifacial solar module, increasing the total energy generation. Since more energy is transformed into electricity, fewer panels are required to satisfy the same power requirements in typical roof installations.

Bi-facial solar PV modules are often more durable too because both sides are UV resistant. When bifacial modules are installed on a highly reflective surface they can generate up to 30% more electricity from their bifacial properties.