In June 2025, LONGi's Hi-MO X10 series products achieved TÜV Rheinland's A+ rating for anti-shading performance under point-like shading conditions. In shading scenarios such as dust, bird droppings, and fallen leaves, the anti-shading effect of Back Contact (BC) technology is significantly superior to that of TOPCon.
In September 2025, National Center of Supervision and Inspection on Solar Photovoltaic Product Quality (CPVT) awarded LONGi's Hi-MO X10 the "Three-Proof" Certificate—the industry's first certification for fireproof, anti-shading, and anti-dust accumulation. CPVT test data shows that in the shading resistance test, when a single cell is 50% shaded, the average power loss of the Hi-MO X10 module is only 10.15%, while that of TOPCon modules is as high as 36.48% — nearly four times higher than the former.
Value Conversion: Driving High-Quality Development of the PV Industry
The technical advantages of the HPBC2.0 module have been converted into tangible power plant value: higher power generation efficiency and longer service life effectively reduce the Levelized Cost of Electricity (LCOE), improve the investment return rate throughout the project's entire life cycle, and provide a solid guarantee for the stable profitability of power plants.
Meanwhile, its excellent shading resistance, safety, and reliability enable the module to be widely applied in diverse scenarios such as wind-solar co-location and complex distributed rooftops, further expanding the application boundaries of PV technology.
Shanghai AB Food & Beverages Limited, the production base of the century-old brand "Ovaltine", has a large number of obstacles such as lightning rods and ventilation ducts on its roof, resulting in severe local shading problems. Recommended by EPC (Engineering, Procurement, and Construction) contractor Shanghai Mi'ang PV, the enterprise selected Hi-MO X10 modules to build a 0.67MW PV power plant, which significantly reduced the impact of shading on power generation efficiency and saves over 870,000 yuan in electricity fees annually.
In Thailand, LONGi, in collaboration with local EPC team PPE Solar, helped Chumponwarin Part., Ltd. Thailand—located 25 kilometers away from Bangkok—installed a 974.08kW PV power plant. During on-site surveys, the EPC team identified shading issues from power grid wires on the factory building and thus resolutely recommended Hi-MO X10 modules. After the project was put into operation, even under low-light conditions during the rainy season, it saves 400,000 Thai baht in electricity fees monthly, equivalent to one-fifth of its electricity expenditure.
TÜV Rheinland's test results are not only full recognition of LONGi's product performance but also another authoritative confirmation of the value of BC technology. With the large-scale promotion and application of high-performance BC modules, the PV industry will achieve new breakthroughs in adapting to complex environments, providing stronger technical support for the global energy transition.
About LONGi
Founded in 2000, LONGi (Stock code: 601012. SH) is committed to being the world's leading solar technology company, focusing on customer-driven value creation for full scenario energy transformation.
Under its mission of 'making the best of solar energy to build a green world', LONGi has dedicated itself to technology innovation and established several business sectors, covering mono silicon wafers, cells and modules, commercial & industrial distributed solar solutions, green energy solutions, building integrated photovoltaic and hydrogen equipment. As an international company, LONGi's business covers more than 160 countries and regions. Actively practicing its "Solar for Solar" concept, LONGi is accelerating the global transition to sustainable energy and promoting energy equity, enabling more people around the world to access affordable clean energy.
