What is the difference between monocrystalline and polycrystalline solar panels?

Monocrystalline panels are made from single-crystal silicon, while polycrystalline panels are made from multiple silicon crystals. Monocrystalline panels are more efficient and have a higher power output per square foot. Polycrystalline panels are less expensive but slightly less efficient. Monocrystalline panels are typically darker in color, while polycrystalline panels have a bluish hue. Both types are widely used in residential and commercial solar installations.