Designed for commercial and utility-scale applications, the Q CELLS Bifacial 640W delivers 640W of maximum power output with an impressive 23.02% module efficiency. With its exceptional 23.02% 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 Q CELLS modules. Measuring 2278 x 1134 x 35 mm and weighing 32.3kg, the Bifacial 640W is designed for efficient handling and installation.