Monocrystalline Silicon Solar Cell (mono-Si) is made out of silicon ingots, which are cylindrical in shape. To optimize performance and lower costs of a single monocrystalline solar cell, four sides are cut out of the cylindrical ingots to make silicon wafers, which is what gives monocrystalline solar panels their characteristic look. Monocrystalline solar panels have the highest efficiency rates since they are made out of the highest-grade silicon. The efficiency rates of monocrystalline solar panels are typically 15 ~ 20%. Monocrystalline solar panels are the most expensive.
Related Definitions in the Project: The Solar Energy
