Designed for commercial and utility-scale applications, the Suntech Premium 520W delivers 520W of maximum power output with an impressive 22.59% module efficiency. With its exceptional 22.59% efficiency rating, this panel maximizes power density for space-constrained installations. An industry-leading 30-year performance warranty underscores the long-term reliability and durability of Suntech modules. Measuring 2278 x 1134 x 35 mm and weighing 27.9kg, the Premium 520W is designed for efficient handling and installation.