The Longi 550W solar panel is part of the high-efficiency Hi-MO X10 series (specifically model LR7-72HVHF or LR7-72HVD), designed for utility-scale, commercial, and industrial, as well as high-end residential rooftop applications. It utilizes advanced N-Type HPBC 2.0 (Hybrid Passivated Back Contact) technology to achieve high energy yields.