TR Technology Tiling Ribbon eliminates cell gaps to increase module efficiency and power. 9BB Half Cell Technology Uniquely designed 9 busbar mono half cut solar cells deliver ultra-high power in a small footprint. Shade Tolerant Twin array design allows continued performance even with shading by trees or debris. Designed for Long Life Uses the same DuPont protective film as the Space Station, Mars Lander, and jetliners. Leading Warranty 12-year product and 25-year linear power warranty; 98% guaranteed first year, max 0.55% annual loss.