Polycrystalline modules are made of polycrystalline silicon, also known als polysilicon. The silicon is melted and cast into blocks to manufacture the individual solar cells. The resulting silicon block is made up out of multiple crystals, hence the term polycrystalline. Polycrystalline panels are easily recognized by their square cells and glittering blue surface. They are widespread due to their good value for money. Choose the right module for your new PV array or as a spare part on the SecondSol marketplace.