LONGi solar panels range from $0. For a typical 6kW system, that's approximately $3,300 to $5,100 before the 30% federal tax credit. What is the most efficient LONGi panel? The most efficient LONGi panel is the Hi-MO 7 LR5-54HTH at 22. LONGi supplies its reliable, high-performance solar modules to 6 continents and 85 countries and regions to power the world toward a low carbon future. 0 is the abbreviation for the second generation of Hybrid Passivation Back Contact cell technology, independently developed and named by LONGi. 0 cell technology, based on a high- end BC technology platform, primarily characterized by the. We are not only offer solar panels, but also solar system and solar inverter. From 2017, we are launching our own brands, with good quality and competitive offer. Shipping fee and delivery date to be. High-efficiency monocrystalline solar panels with industry-leading HPBC technology and 25% efficiency ratings LONGi Solar stands as the world's largest solar manufacturer, producing over 110GW of solar products annually with an incredible production capacity including 25 GW for panels, 30 GW for. LONGi has 3 main series of solar panels: Hi-MO 4, Hi-MO 5 and Hi-MO 6 which have a variety of different options to suit residential, commercial and utility-scale projects. In simple terms the. Written by Ana Almerini Ana Almerini Ana is a marketing and communications professional with experience in the solar industry since 2020.