The Evergreen ES-180 is an excellent solar panel for many reasons. First, it contains String RibbonTMpolycrystalline solar cells that outperform thin films and achieve comparable performance to bulk crystalline technologies while using half as much silicon. Second, they offer predictable, reliable, long-term performance. Third, each module is individually tested to ensure field performance meets or exceeds specifications. The solar cells are matched to reduce internal losses and the possibility of hot spots. Furthermore, the evergreen solar panels come with factory-installed wires, connectors and bypass diodes.