The LONGi Solar Premium 400W (2025) is a high-performance N-Type TOPCon solar module engineered for professional installations. With its exceptional 22.15% 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 LONGi Solar modules. Measuring 1722 x 1134 x 30 mm and weighing 19.9kg, the Premium 400W (2025) is designed for efficient handling and installation.