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LONGi Introduces Hi-MO X12 and Hi-MO 9 Prime Solar Panels: Up to 690W Power and 25.54% Efficiency.
The solar industry continues to move towards higher efficiency, better reliability and improved electricity generation. LONGi has taken another step in this direction with the introduction of its latest solar panel technologies at All Energy Australia 2026.
The company unveiled two advanced solar modules: the LONGi Hi-MO X12 and LONGi Hi-MO 9 Prime. Both products use the latest HPBC 2.0 back-contact solar cell technology.
The new Hi-MO X12 targets commercial, industrial and distributed solar applications. Meanwhile, the Hi-MO 9 Prime focuses on large-scale solar power projects.
These launches also highlight LONGi’s efforts to improve solar panel performance through better electrical connections, advanced cell structures and improved durability. Longi+1
LONGi Hi-MO X12: A New Generation of High-Efficiency Solar Panels
LONGi Hi-MO X12 – Next-generation HPBC 2.0 solar panel featuring advanced back-contact technology for higher efficiency and improved performance.
The LONGi Hi-MO X12 is one of the most interesting developments announced at the Australian exhibition.
Unlike conventional solar modules, which use traditional soldered ribbons to connect individual solar cells, this new series introduces an Integrated Conductive Backsheet.
This design changes how electricity moves between solar cells inside the module.
1. Integrated Conductive Backsheet Technology
Traditional solar panels use metallic ribbons and soldered connections to transfer electricity between cells.
LONGi has developed a different approach. Its new conductive backsheet contains specially designed metal foil circuits that allow solar cells to connect directly.
According to LONGi, this innovation:
- Removes more than 15,000 potential solder-joint failure points per module.
- Increases the electrical conductive cross-sectional area by approximately 85%.
- Provides an additional 6–8 watts of power.
- Reduces the number of conventional electrical connection points.
This design aims to improve electrical performance while reducing potential connection-related reliability problems. Longi+1
2. Full-Screen Technology for Higher Power Generation
Another important feature is LONGi’s Full-Screen Technology.
This approach combines shingled cell arrangements with a hidden busbar design. As a result, the front surface has fewer visible electrical connection lines.
LONGi says this technology can contribute another 8–12 watts of power.
When combined with the Integrated Conductive Backsheet, the two innovations provide a claimed total power improvement of approximately 14–20 watts compared with conventional configurations.
The cleaner front appearance also makes the module attractive for modern commercial and building-integrated solar applications. Longi+1
3. LONGi Hi-MO X12 Power and Efficiency
The commercial and industrial flagship model, LR7-72WVD, offers impressive specifications.
| Specification | LONGi Hi-MO X12 |
|---|---|
| Maximum power | 690W |
| Power range | 660W–690W |
| Maximum efficiency | Above 25.54% |
| Cell technology | HPBC 2.0 |
| Electrical design | Integrated Conductive Backsheet |
| Main application | Commercial and industrial solar |
These specifications make the Hi-MO X12 an interesting development for businesses that want higher power output from their available rooftop space.
However, actual energy production will depend on installation conditions, orientation, temperature and shading.
4. Improved Protection Against Microcracks and Moisture
Solar panels operate outdoors for decades. Therefore, resistance to moisture, temperature changes and mechanical stress is essential.
LONGi has introduced additional structural improvements in the Hi-MO X12.
The manufacturer reports that its 130-micrometre ultra-thin horizontal stacking process reduces internal stress by approximately 60%.
The module also incorporates a Metal Foil Barrier, which reduces the water vapour transmission rate by 90%, according to LONGi.
These improvements aim to protect internal connections and support long-term module reliability in challenging environments. Longi+1
LONGi Hi-MO 9 Prime: Designed for Large Solar Power Projects
Inside LONGi’s Hi-MO 9, the ‘ultimate’ c-Si technology
While the Hi-MO X12 focuses on distributed generation, LONGi developed the Hi-MO 9 Prime for utility-scale solar installations.
Large solar power plants require modules that generate more electricity from limited land. Higher module efficiency can help developers install greater DC capacity within a given project area.
The Hi-MO 9 Prime addresses this requirement with advanced back-contact technology.
1. Up to 680W Power Output
The Hi-MO 9 Prime delivers a maximum power output of 680 watts, with conversion efficiency reaching 25.17%.
These specifications position it among the high-power solar modules introduced at the exhibition.
2. Better Use of Available Land
One of the key benefits highlighted by LONGi is improved land utilisation.
The manufacturer claims that the Hi-MO 9 Prime can provide approximately 4.62% more DC capacity per unit of land area than conventional TOPCon modules with an equivalent footprint.
This can help large solar project developers increase installed capacity without proportionally increasing the project area.
3. Long-Term Performance and Degradation
Solar panel degradation is an important factor when evaluating a module’s lifetime performance.
LONGi has announced the following degradation figures for the Hi-MO 9 Prime:
| Performance parameter | LONGi specification |
|---|---|
| First-year degradation | 1% |
| Annual degradation afterwards | 0.35% |
| Power retention after 30 years | 88.9% |
In simple terms, these figures indicate that the module is designed to maintain most of its original power output over a 30-year period.
LONGi also reported that TÜV Rheinland awarded the Hi-MO 9 Prime a product conformity certificate covering assessments including light-induced degradation (LID) and light- and elevated-temperature-induced degradation (LeTID). Longi+1
LONGi Also Introduces New Solar Battery Storage Solutions
LONGi ONE Product Family featuring OneMatrix 2.0, OneBank 2.0 and Hi-MO One energy storage solutions.
LONGi’s announcement was not limited to solar panels.
The company also presented its energy storage portfolio to the Australian market for the first time.
Some of the solutions included:
- LONGiBank 3.0: An energy storage solution that also received TÜV Rheinland certification at the exhibition.
- OneMatrix: Designed for large utility-scale energy storage projects.
- Hi-MO One Pro: Developed for commercial and industrial energy management.
- OneNexus M5 and H2C: Solutions targeting off-grid and microgrid applications.
LONGi also introduced LONGi Block, a modular photovoltaic solution designed to simplify deployment and maintenance at large solar installations. Longi+1
What Does This New LONGi Technology Mean for Pakistan’s Solar Market?
Pakistan’s solar market has experienced growing interest in high-wattage and high-efficiency solar panels.
Consumers and businesses increasingly compare panel efficiency, power output, available installation space and long-term performance before making purchasing decisions.
LONGi’s latest developments could be particularly interesting for Pakistan for several reasons.
1. Higher Power from Limited Rooftop Space
The Hi-MO X12’s high power output could benefit commercial buildings, factories and warehouses where rooftop space is limited.
2. Improved Electrical Connection Design
The Integrated Conductive Backsheet aims to reduce conventional solder-joint failure points. This is an interesting development for solar installations exposed to demanding outdoor conditions.
3. Better Efficiency for Large Projects
The Hi-MO 9 Prime’s efficiency and land-use claims could attract attention from developers planning large solar power plants.
4. Continued Development of Back-Contact Technology
HPBC 2.0 represents another step in the development of back-contact solar cells. These technologies aim to improve how solar cells collect and transfer electricity while reducing shading from front-side electrical contacts.
However, there is an important point for Pakistani buyers: the Australian product launch does not automatically confirm local availability, Pakistani pricing or an official delivery schedule for these particular models.
Buyers should check the exact model number, original product datasheet, warranty and local distribution status before purchasing.
LONGi Hi-MO X12 vs Hi-MO 9 Prime: Which Is Better?
Both modules use HPBC 2.0 technology, but LONGi has designed them for different applications.
| Feature | Hi-MO X12 | Hi-MO 9 Prime |
|---|---|---|
| Main application | Commercial and industrial | Utility-scale |
| Maximum power | 690W | 680W |
| Maximum efficiency | Above 25.54% | 25.17% |
| Cell technology | HPBC 2.0 | HPBC 2.0 |
| Main focus | Rooftop performance and reliability | Land-use efficiency and large-scale generation |
The Hi-MO X12 is particularly interesting for commercial rooftop projects. On the other hand, the Hi-MO 9 Prime is designed for large solar farms.
Therefore, the best option depends on the project requirements rather than wattage alone.
Conclusion: LONGi Continues to Advance Solar Panel Technology
LONGi’s introduction of the Hi-MO X12 and Hi-MO 9 Prime demonstrates the company’s continued investment in advanced solar technology.
The Hi-MO X12 combines a new conductive backsheet with Full-Screen Technology to achieve up to 690W output and more than 25.54% efficiency in its flagship commercial configuration.
Meanwhile, the Hi-MO 9 Prime offers up to 680W output and 25.17% efficiency, with a focus on large-scale solar installations.
For Pakistan’s growing solar industry, these developments are worth watching. Higher efficiency, improved electrical connections and better long-term performance could influence the next generation of solar panel choices.
Hajvery Solar Energy continues to follow developments in international solar technology and the latest solar panels, inverters and lithium batteries available in the market.
Visit Hajvery Solar Energy for solar product information and market updates.
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