LONGi introduced its Hi-MO X12 and Hi-MO 9 Prime back-contact solar modules at All Energy Australia 2026
The Hi-MO X12 offers up to 690 W output, while the Hi-MO 9 Prime reaches 680 W with 25.2% efficiency
LONGi also showcased its energy storage portfolio and signed an agreement targeting 2 GW of module deliveries
Solar manufacturer LONGi introduced two new back-contact (BC) solar module series at All Energy Australia 2026: Hi-MO X12 for distributed solar applications, and Hi-MO 9 Prime for utility-scale projects. Both series are based on the company‘s HPBC 2.0 cell technology.
Hi-MO X12 incorporates LONGi’s Integrated Conductive Backsheet technology, which combines the rear encapsulation film, conductive metal foil, and backsheet into a single structure. Instead of conventional interconnection ribbons, the design uses metal foil to collect current across the rear of the cells. According to LONGi, this eliminates more than 15,000 potential solder joint failure points and increases the conductive cross-sectional area by 85%. The company claims the design improves module power by 6 to 8 W.
The module also features what LONGi calls Full-Screen Technology, combining shingled cell interconnections with a hidden busbar design. The slightly overlapping cells reduce the gaps between them, while the rear-side busbars eliminate shading from front-side busbar connections. Together, these features increase the active power-generating area. LONGi claims the design adds another 8 to 12 W, bringing the combined power gain to 14 to 20 W.
Barry Chen, Senior Product Solution Manager at LONGi, previously discussed these technologies at the TaiyangNews Global PV System Technology Trends 2026, where he explained the company’s developments in BC module interconnection and conductive backsheets (see LONGi Expands BC Technology Platform).
The Hi-MO X12 model LR7-72WVD offers power ratings from 660 to 690 W, with a reported maximum efficiency exceeding 25.54%. The smaller LR7-54WVD model delivers 495 to 510 W and has a maximum efficiency of 24.99%. The latter measures 1,800 × 1,134 mm and features a dual-glass design with a power temperature coefficient of -0.26%/°C.
For reliability, LONGi highlights an ultra-thin horizontal stacking process that it claims reduces internal stress by 60%, lowering the risk of microcracks. The company also says the integrated metal foil barrier reduces the water vapor transmission rate (WVTR) by 90%.
Hi-MO 9 Prime, designed for utility-scale applications, offers power ratings from 650 to 680 W, with a maximum module efficiency of 25.2%. The bifacial dual-glass module measures 2,382 × 1,134 mm and has a power temperature coefficient of -0.26%/°C. LONGi claims the module can accommodate approximately 4.62% more DC capacity than conventional TOPCon modules within the same land area. The module comes with a 12-year product warranty and a 30-year performance warranty.
Beyond the new PV modules, LONGi showcased its energy storage portfolio in Australia, including LONGiBank 3.0, OneMatrix, and the OneNexus series, targeting utility-scale, commercial and industrial (C&I), and residential applications. The company additionally introduced LONGi Block, a modular PV solution designed to simplify deployment and maintenance.
LONGi also signed a memorandum of understanding (MoU) with its Australian distribution partner Raystech, setting a combined module delivery target of 2 GW between 2027 and 2029. The partnership will expand into solar project development and integrated energy solutions for AI data centers. The company also signed additional distribution agreements with Corys Electrical and Rise Energy in New Zealand.