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Longi has launched the Hi-MO S10, the first residential solar panel with 25% efficiency, combining HBC technology, high performance, durability and a design adapted for roofs.
Longi, one of the global leaders in photovoltaic technology, launched its newest solar panel residential, setting a historic milestone for the solar industry: the Hi-MO S10 (EcoLife Pro) model achieves 25% efficiency, the highest rate ever recorded among modules available for sale on the global market.
The announcement was made during Intersolar Europe 2025, one of the sector's leading trade fairs, held in Munich, Germany.
Innovation for residential use: more power and refined design
Longi's new solar panel is part of the premium EcoLife Series line, developed especially for residential consumers looking to combine energy efficiency, durability and aesthetics.
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With a maximum power of 510W, the Hi-MO S10 was designed with 54 bifacial cells and dimensions of 1,80 mx 1,13 m, weighing 23,5 kg.
In addition to its high performance, the module stands out for its design adapted to residential roofs, combining an elegant look with structural robustness, meeting a growing demand for energy solutions that do not compromise the architectural style of homes.
Longi's HBC technology uses combination of HTJ and back contact
The panel's central innovation lies in the application of HBC (Heterojunction Back Contact) technology, which combines heterojunction (HTJ) with a back contact structure (Back Contact).
This engineering allows for greater light capture and minimizes losses, resulting in superior performance compared to traditional models available on the market.
According to the manufacturer, this is the first mass-produced and commercially available solar panel with this technological combination, which makes it a reference in industrial innovation in the photovoltaic sector.
With an efficiency of 25%, the Hi-MO S10 surpasses the current limit of conventional solar panels on the market, which is around 24,2%.
Until then, higher numbers were only achieved in laboratory environments, without the viability of large-scale production.
Another highlight of Longi’s new solar panel is its ultra-low temperature coefficient of -0,24%/°C, which means that performance loss caused by heat is significantly reduced — a crucial differentiator for regions with high temperatures.
Future of solar energy: breaking technological barriers
The efficiency of a solar panel determines its ability to convert sunlight into electrical energy per square meter.
The higher this rate, the greater the energy production in the same area, which is essential for residential applications, where installation space is often limited.
Achieving 25% efficiency on a commercial scale represents a major advance, considering that the theoretical limit for silicon solar cells is around 30%.
To break this barrier, researchers have been exploring new materials, such as perovskite, although its commercial application is still under development.
