The LONGi Hi-MO 5 550W (LR5-72HPH) is a high-efficiency monocrystalline solar panel tailored for large-scale residential and commercial (C&I) projects. Featuring M10-182mm wafers, half-cut cell technology, and 9 busbars, this 144-cell panel provides over 21.3% efficiency, superior low-light performance, and a 12 to 25-year warranty depending on the specific model.