LONGi launches Hi-MO X12 in Europe with new Integrated Conductive Interconnection (ICI) technology and up to 25.72% module efficiency
LONGi has launched its new Hi-MO X12 solar module series in Europe with two major innovations in module architecture. The industry's first Integrated Conductive Interconnection (ICI) technology replaces conventional metal ribbons with a continuous sheet of conductive metal foil extending over 400 meters per module. This eliminates more than 15,000 potential solder-joint failure points per module.
ICI also introduces a gapless cell architecture that combines overlapping cells with hidden busbars to eliminate visible gaps between cells. The technology lowers internal mechanical stress by 60%, and its metal foil barrier cuts water vapor transmission by 90%. Together, these innovations increase module power by up to 20 W.
Hi-MO X12 builds on LONGi's established HPBC 2.0 cell technology. The European portfolio includes six commercial and industrial module versions with power ratings of up to 690 W and maximum module efficiency of 25.72%, depending on the variant. The two EcoLife residential versions combine a uniform, mirror-like black appearance with up to 500 W of power. Delivery of Hi-MO X12 modules to Europe is expected to begin in January 2027.
Integrated Conductive Interconnection reduces mechanical stress by 60% and adds up to 20 W of power
Conventional solar modules use soldered metal ribbons to connect individual cells. These connections introduce electrical resistance and can place mechanical stress on the cells due to differences in thermal expansion.
Hi-MO X12 replaces conventional ribbons with a continuous sheet of conductive metal foil extending over 400 meters per module. The foil connects directly to the solar cells, eliminating more than 15,000 potential solder-joint failure points. The new interconnection structure increases the conductive cross-sectional area by 85%. Lower electrical resistance contributes an additional 6–8 W of module power. ICI’s ribbon-free interconnection also lowers internal mechanical stress from 50 MPa to 20 MPa, a reduction of 60%. This decreases the risk of microcracks during transportation and installation.
In addition, ICI incorporates a gapless cell architecture that uses overlapping cells and hidden busbars to increase the module's active area. This design contributes up to 12 W of additional module power.
Together, the two innovations within ICI increase module power by up to 20 W.
Metal foil barrier reduces water vapor transmission by 90%
ICI also incorporates a metal foil barrier that reduces the water vapor transmission rate (WVTR) by 90%. This limits moisture ingress and helps protect internal components against moisture-related degradation. This is particularly relevant in humid climates. Combined with the reduced mechanical stress of the ICI’s ribbon-free architecture, it strengthens the module's resistance to long-term degradation.
Hi-MO X12 comes with a 30-year power performance warranty. The warranty guarantees at least 88.85% of rated power after 30 years, with maximum degradation of 1% in the first year and 0.35% annually thereafter.
Six module versions offer installation flexibility for commercial and industrial rooftops
The European Hi-MO X12 portfolio includes 54-cell, 60-cell and 72-cell configurations for commercial and industrial projects. This range of formats gives installers and system designers greater flexibility to adapt solar installations to different roof dimensions. For industrial businesses with substantial daytime electricity consumption, the additional generation potential can help reduce grid electricity purchases.
The Hi-MO X12 C&I portfolio offers module power ratings of up to 690 W and a maximum module efficiency of 25.72%, depending on the module variant. High power density allows businesses to install more solar capacity on rooftops with limited space.
Residential EcoLife version combines high power with a uniform all-black appearance
LONGi is also introducing the ICI technology in its EcoLife residential portfolio, with module power ratings of up to 500 W. The gapless cell design gives the module an even more uniform black surface than traditional full-black modules, with virtually no visible gaps between cells. The residential portfolio includes single-glass and dual-glass configurations to accommodate different installation requirements.
Hi-MO X12 builds on proven HPBC 2.0 cell technology
Hi-MO X12 uses LONGi's Hybrid Passivated Back Contact (HPBC) 2.0 cell technology, already established in the Hi-MO X10 and EcoLife product families. HPBC 2.0 incorporates shading optimization and LONGi's proprietary TaiRay silicon wafers. The new ICI architecture builds on this established cell platform to further improve module power and reliability.
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