FATH - Model Volt FS 220Wp to 235Wp - Polycrystalline Module

Polycrystalline or multicrystalline solar cells  are recognisable by their blue surface.  Their crystal structure is ordered only in parts. Therefore, they have a slightly higher internal resistance, which is reflected in a somewhat lower efficiency. Polycrystalline cells are easier to manufacture, cheaper to purchase and the most widely used technology in photovoltaics.