Longi Launches First Solar Panel With 25% Efficiency, Heterojunction, And Back Contact

Written by Andriely Medeiros de Araújo

Published on 09/05/2025 at 21:36

A Longi lançou o Hi-MO S10, primeiro painel solar residencial com 25% de eficiência, combinando tecnologia HBC, alto desempenho, durabilidade e design adaptado para telhados. Imagem: Canva.

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Longi Launched the Hi-MO S10, First Residential Solar Panel with 25% Efficiency, Combining HBC Technology, High Performance, Durability, and Roof-Adapted Design.

Longi, one of the global leaders in photovoltaic technology, launched on Wednesday (7) its newest residential solar panel, establishing 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 in the global market.

The announcement took place during Intersolar Europe 2025, one of the leading trade fairs in the sector, held in Munich, Germany.

Innovation for Residential Use: More Power and Refined Design

The new solar panel from Longi integrates the premium EcoLife Series, specially developed for residential consumers seeking to combine energy efficiency, durability, and aesthetics.

ARTICLE CONTINUES BELOW

Longi’s HBC Technology Uses a Combination of HTJ and Back Contact

The central innovation of the panel lies in the application of HBC technology (Heterojunction Back Contact), which combines heterojunction (HTJ) with a back contact structure.

This engineering allows for greater light capture and minimizes losses, resulting in superior performance compared to traditional models available in the market.

According to the manufacturer, this is the first mass-produced and commercially available solar panel with this technological combination, making it a reference in industrial innovation in the photovoltaic sector.

With an efficiency of 25%, the Hi-MO S10 exceeds the current limit of conventional solar panels sold, which hovers around 24.2%.

Until now, higher numbers were only achieved in laboratory environments, without viability for large-scale production.

Another highlight of Longi’s new solar panel is the ultra-low temperature coefficient of -0.24%/°C, meaning that performance loss caused by heat is significantly reduced—a crucial differential for regions with high temperatures.

Future of Solar Energy: Breaking Technological Barriers

The efficiency of a solar panel determines its capacity 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 significant advance, considering that the theoretical limit for silicon solar cells hovers around 30%.

To break this barrier, researchers have been exploring new materials, such as perovskite, although its commercial application is still under development.

Longi Launches First Solar Panel With 25% Efficiency, Heterojunction, And Back Contact

Longi Launched the Hi-MO S10, First Residential Solar Panel with 25% Efficiency, Combining HBC Technology, High Performance, Durability, and Roof-Adapted Design.

Innovation for Residential Use: More Power and Refined Design

Longi’s HBC Technology Uses a Combination of HTJ and Back Contact

Future of Solar Energy: Breaking Technological Barriers

The Soviet Union spent 22 years drilling into the Earth’s crust and reached a depth of 12,262 meters — they found water where it was thought impossible, hydrogen bubbling from the rock, granite that is 2.7 billion years old, and temperatures of 180 degrees that melted the drill bits.

Norway is drilling 27 kilometers of rock 392 meters below the bottom of a fjord to build the world’s largest and deepest underwater road tunnel — when completed, a 21-hour journey will be reduced to 10.

Chinese engineers begin filling a 217-meter dam at an altitude of 3,000 meters and prepare a 2,240 MW hydroelectric power plant to integrate hydropower, solar, and wind energy in the upper Jinsha.

A German architect built a cylindrical house in 1994 that rotates to follow the sun throughout the day, generates 5 times more energy than it consumes, and was the world’s first energy-positive house.

An astronaut spent 340 days in space while his twin brother stayed on Earth, and NASA found a “rejuvenating” effect, genes, microbiome, cognition, and immune system that revealed the biological cost of living outside the planet.

China has just successfully tested the world’s first ground effect maritime vehicle, a craft that flies up to 6 meters above the water at 200 km/h, uses quantum technology and 6G communication, and can rescue patients in the middle of the ocean.

Japan wants to install the world’s largest floating wind farm, with a capacity of 1 GW near the Izu Islands, to supply Tokyo by 2035 and create a plant in the ocean nearly 10 times larger than the current largest floating operation.

The promises and challenges of solar energy in Morocco advance with the Noor megaproject in the desert and its impact on the global energy transition.

The highest railway in the world climbs to 5,072 meters in Tibet — the carriages have a pressurized oxygen system because there isn’t enough air up there for passengers to breathe.

Farmers criticize the R$ 10 billion package announced by Alckmin at Agrishow, stating that credit for machinery is insufficient given the cost of tractors and harvesters, and they are pressing the government for greater support to renew fleets in the field.

The sedan that was discontinued and faded from the spotlight is still sought after by Brazilian families due to a detail that most new cars cannot match.

Longi Launches First Solar Panel With 25% Efficiency, Heterojunction, And Back Contact

Longi Launched the Hi-MO S10, First Residential Solar Panel with 25% Efficiency, Combining HBC Technology, High Performance, Durability, and Roof-Adapted Design.

Innovation for Residential Use: More Power and Refined Design

Longi’s HBC Technology Uses a Combination of HTJ and Back Contact

Future of Solar Energy: Breaking Technological Barriers

The Soviet Union spent 22 years drilling into the Earth’s crust and reached a depth of 12,262 meters — they found water where it was thought impossible, hydrogen bubbling from the rock, granite that is 2.7 billion years old, and temperatures of 180 degrees that melted the drill bits.

Norway is drilling 27 kilometers of rock 392 meters below the bottom of a fjord to build the world’s largest and deepest underwater road tunnel — when completed, a 21-hour journey will be reduced to 10.

Chinese engineers begin filling a 217-meter dam at an altitude of 3,000 meters and prepare a 2,240 MW hydroelectric power plant to integrate hydropower, solar, and wind energy in the upper Jinsha.

A German architect built a cylindrical house in 1994 that rotates to follow the sun throughout the day, generates 5 times more energy than it consumes, and was the world’s first energy-positive house.

An astronaut spent 340 days in space while his twin brother stayed on Earth, and NASA found a “rejuvenating” effect, genes, microbiome, cognition, and immune system that revealed the biological cost of living outside the planet.

China has just successfully tested the world’s first ground effect maritime vehicle, a craft that flies up to 6 meters above the water at 200 km/h, uses quantum technology and 6G communication, and can rescue patients in the middle of the ocean.

The promises and challenges of solar energy in Morocco advance with the Noor megaproject in the desert and its impact on the global energy transition.

Historic opportunity: stalled solar energy from the Northeast opens a window, and Mato Grosso do Sul seeks to attract billions in stalled projects, promising economic transformation and national leadership in the sector.

Goodbye rooftop solar energy: United Kingdom announces apartment solar panels that work on balconies and plug directly into the socket

Solar energy at Itaipu could double the plant’s capacity and increase clean generation in Brazil.

French group Qair invests in Ceará with the Bom Jardim photovoltaic complex in Icó, increasing solar energy generation, creating direct jobs, and strengthening energy security in a scenario of sustainable expansion.

Japan wants to install the world’s largest floating wind farm, with a capacity of 1 GW near the Izu Islands, to supply Tokyo by 2035 and create a plant in the ocean nearly 10 times larger than the current largest floating operation.

The promises and challenges of solar energy in Morocco advance with the Noor megaproject in the desert and its impact on the global energy transition.

The highest railway in the world climbs to 5,072 meters in Tibet — the carriages have a pressurized oxygen system because there isn’t enough air up there for passengers to breathe.

Farmers criticize the R$ 10 billion package announced by Alckmin at Agrishow, stating that credit for machinery is insufficient given the cost of tractors and harvesters, and they are pressing the government for greater support to renew fleets in the field.

The sedan that was discontinued and faded from the spotlight is still sought after by Brazilian families due to a detail that most new cars cannot match.