Over two decades, Longi Solar has been committed to developing high-quality solar products that promote sustainable development and reduce environmental impact. it is based out of China, founded in 2000, and is headquartered in Xi’an, China.
The company is a leading manufacturer of monocrystalline solar cells and modules, with a focus on research and development to continuously improve its products.
LONGi Solar has a global presence, with manufacturing facilities in China, Malaysia, and India, and sales and service offices in over 30 countries around the world. The company has a strong commitment to sustainability and has received numerous awards for its efforts in environmental protection.
These Solar Panels are known for their high efficiency, which is achieved through advanced technology such as PERC (Passivated Emitter Rear Contact) and bifacial modules. Their panels are also designed to be durable and reliable, with a strong frame and tempered glass front that can withstand harsh weather conditions.
Overview of LONGi Solar Product Lines
LONGi Solar Panels offer a range of products, including monocrystalline and bifacial solar panels. Their monocrystalline panels have a high conversion efficiency rate, ranging from 19% to 22.5%, depending on the model. These panels are an attractive option for customers who want to maximize their energy output from a limited space.
These Solar Panels also offer bifacial solar panels, which have a transparent back sheet that allows sunlight to pass through and be reflected onto the panel from the ground, increasing their energy yield. These panels have an efficiency rate of up to 22.8% and can generate more energy than traditional monocrystalline solar panels.
| Module | Power Output | Efficiency(%) | Product Warranty(years) |
| HI MO6– | 540W | 25 | 12 |
| HI MO5m | 415W | 21.3 | 12 |
| Hi-MO 5 | 550W | 21.3 | 12 |
| Hi-MO 4m | 460W | 21.2 | 12 |
| Hi-MO 4 | 455W | 21.9 | 12 |
1. HI MO6
LONGi’s new generation HPBC (High-Performance Bifacial Cell) technology is a game-changer in the mass production of high-efficiency cells and has been driving industry innovation. With an efficiency above 25.0%, the LONGi HPBC cells have been surpassing industry standards.
The PRO version of HPBC cells boasts an even higher efficiency of over 25.3%, further cementing LONGi’s position as a leader in solar cell technology. These breakthroughs in efficiency are crucial in reducing the cost of solar energy, increasing its accessibility, and ultimately achieving a sustainable future.
2. HI MO5m
The new generation of solar modules from LONGi incorporates several advanced features, including smart soldering, optimized module size, and smart module packaging and logistics. Uniform smart soldering technology is utilized to increase the power and efficiency of the modules, while also improving power load capacity.
By utilizing M10 wafers and a 54-cell design, the module size is optimized to ensure suitability for distributed applications, taking into account both size and weight. Furthermore, the use of smart module packaging solutions guarantees both high reliability and low-cost transportation and logistics.
In addition, the electrical parameters are optimized, with a working current of around 13A, which is perfectly adapted to mainstream string inverters. Furthermore, the modules incorporate Gallium-doped technology, which overcomes LID degradation and ensures long-term power generation.
These innovative features combine to create a highly efficient and reliable solar module solution for a wide range of applications.
3. Hi-MO 5
The Hi-MO 5 module by LONGi boasts several key advantages that make it a compelling choice for solar energy applications. Firstly, the module features uniform smart soldering that enhances its power and efficiency, while improving power load capacity.
The module size is optimized with an M10 wafer and 54-cell design, which fully considers the size and weight of modules in distributed applications. Moreover, the dual-glass and frame packaging of large-format modules ensures their strength.
In addition to its high efficiency, the Hi-MO 5 module features intelligent packaging solutions that ensure both reliable and cost-effective transportation and logistics. Moreover, its optimized electrical parameters result in an ideal working current of approximately 13A, making it compatible with mainstream string inverters.
Finally, the bifacial energy yield of the module generates additional power from its backside, thereby increasing the overall energy yield.
4. Hi-MO 4m
Hi-MO 4m half-cell modules offer numerous benefits to customers. The utilization of half-cell modules results in an increase in power output and a decrease in hot spot temperature due to a lower working current.
These modules are ideal for distributed generation applications as their operating current is lower than 11A, matching with various inverters and optimizers and avoiding wiring loss. The modules are available in a standardized width and a choice of three different lengths, allowing for full utilization of limited roof area, and enabling the maximum installed capacity.
By utilizing gallium-doped technology, the module is designed to overcome LID degradation and provide consistent power generation over the long term.
In addition, the nine-busbar design further enhances current collection capabilities. These modules can be installed on any roof, including pitched roof, flat and angular roof, and flat roof with herringbone detail. Finally, it guarantees a 1st-year degradation of ≤2% and linear degradation of ≤0.55%/year, giving customers peace of mind.
5. Hi-MO 4
The Hi-MO 4 bifacial half-cell module is designed to maximize power output and energy yield under high irradiance conditions. The low working current results in lower hot spot temperatures and improved performance.
The module has a high mechanical load rating, making it suitable for tracker mounts. It also features a high voltage grade glass and junction box that supports 1500V systems.
The use of a nine-busbar design improves current collection capability, while gallium-doped technology ensures that the module overcomes LID degradation and guarantees long-term power generation.
The Hi-MO 4 module also has a low degradation rate, with anti-LID, anti-PID, 1st-year degradation of ≤2%, and linear degradation of ≤0.45%/year.
There are no compatibility issues between the standard module and mainstream inverters and trackers, making it easy to match with any system.
Additional power generation from the backside of bifacial modules further increases the overall energy yield, which has been verified by customers and third-party testing organizations.
Technical Specifications
- Panel Types and Sizes: LONGi Solar Panels offer a diverse range of panel types and sizes to suit various installation needs. They manufacture monocrystalline and bifacial panels in sizes ranging from 310W to 600W, ensuring that there is an option for every project.
- Efficiency Ratings: LONGi Solar Panels are renowned for their high-efficiency ratings, ranging from 19% to 22.6%, depending on the panel model. This high efficiency ensures maximum power output from limited space and enhances their suitability for both residential and commercial applications.
- Temperature Coefficients: LONGi Solar Panels have low-temperature coefficients, meaning they can maintain their performance in high-temperature conditions. This feature ensures that LONGi Solar Panels can produce a consistent output of energy, even in hot climates, making them an ideal choice for regions with high temperatures.
- Power Tolerance: LONGi Solar Panels have a positive power tolerance of up to 5W, meaning that they can generate more power than their rated capacity. This power tolerance ensures that customers can expect more output from their LONGi Solar Panels, enhancing their energy yields and making them more cost-effective.
- Durability and Warranty: LONGi Solar Panels are designed to be robust and durable, with a warranty of up to 30 years. These panels can withstand harsh weather conditions, including heavy snow and high winds, making them ideal for installation in regions with extreme weather.
Performance and Reliability
- Performance under different weather conditions: LONGi Solar Panels perform well under different weather conditions, including cloudy and overcast days. Their bifacial panels are especially effective in low-light conditions.
- Long-term performance and degradation rates: LONGi Solar Panels have a low degradation rate, with some panels having a 55% annual degradation rate. This means that the panels will continue to produce energy at a high level for many years.
- Testing and certification results: LONGi Solar Panels have been tested and certified by several independent organizations, including TUV Rheinland and the National Renewable Energy Laboratory (NREL). These tests have shown that the panels perform well and are reliable.
Comparison with Other Brands
LONGi Solar Panels are considered to be among the top solar panel brands in the market. They compete with other leading brands such as SunPower, LG, and Panasonic. In terms of performance, LONGi Solar Panels have a high-efficiency rating and low degradation rates, making them a reliable option for generating electricity. They also have a relatively low cost compared to other top brands.
Advantages of LONGi
- High-efficiency rating
- Low degradation rates
- Competitive Pricing
- Long lifespan and durability
- Strong warranty and customer support
Disadvantages of LONGi
- Limited availability in some regions
- May not be suitable for all installation types due to the larger size
What sets LONGi Solar Panels apart from competitors?
LONGi Solar Panels stand out from their competitors due to their high-efficiency rating and low degradation rates, which ensure that they will continue to perform well over the long term.
Additionally, the company’s commitment to sustainability and the use of renewable energy in its manufacturing process is a key differentiator.
LONGi Solar Panels also have a relatively low cost compared to other top brands, making them a competitive option for homeowners and businesses looking to switch to solar energy.
LONGi Solar Panels has a strong customer service and support team, with a network of dealers and installers across the globe. The company offers a 24/7 customer service hotline and has a team of experienced technicians who can provide support and troubleshooting assistance. Additionally, LONGi Solar Panels offers a comprehensive warranty on their panels, providing peace of mind to customers.
| Parameter | Longi | Trina | Jinko | Q CELLS |
| Year of establishment | 2000 | 1997 | 2006 | 1999 |
| Power output range | 18.7% - 22.0% | 18.7% - 21.1% | 19.4% - 23.7% | Monocrystalline and Polycrystalline |
| Types of panels | Monocrystalline and Polycrystalline | Monocrystalline and Polycrystalline | Monocrystalline and Polycrystalline | 19.5% - 21.7% |
| Efficiency range | 305W - 540W | 275W - 615W | 275W - 615W | 280W - 610W |
| Warranty period | 10 - 12 years product warranty and 25 years performance warranty | 10 - 15 years product warranty and 25 years performance warranty | 10 - 12 years product warranty and 25 years performance warranty | 10 - 12 years product warranty and 25 years performance warranty |
| Certifications | TUV, CE, UL, ISO | TUV, CE, UL, ISO | TUV, CE, UL, ISO | TUV, CE, UL, ISO |
Pros
- High-efficiency rating
- Low degradation rates
- Competitive Pricing
- Long lifespan and durability
Cons
- Limited availability in some regions
- May not be suitable for all installation types due to the larger size
Customer Reviews of LONGi
Sustainability and Environmental Impact
- LONGi Solar Panels’ sustainability efforts: LONGi Solar Panels is committed to sustainability and has implemented several initiatives to reduce its environmental impact. The company uses renewable energy in its manufacturing process and has reduced its carbon emissions through energy efficiency measures.
LONGi Solar Panels also has a recycling program for its products at the end of their lifecycle.
- Environmental impact of manufacturing and disposal: Like all solar panels, the manufacturing of LONGi Solar Panels has an environmental impact. However, the company has taken steps to reduce this impact, including using renewable energy sources and implementing sustainable manufacturing practices. Additionally, LONGi Solar Panels can be recycled at the end of their lifecycle, reducing waste and minimizing their impact on the environment.
- Carbon footprint and life cycle analysis: LONGi Solar Panels have a low carbon footprint and a high energy yield, making them an environmentally friendly option. Life cycle analysis has shown that LONGi Solar Panels have a low environmental impact and are a sustainable choice for generating electricity.
Awards and certifications received
LONGi Solar Panels have received prestigious awards and certifications.
- They have been awarded the TUV Rheinland “All Quality Matters” award and the Top Brand PV Seal award by EuPD Research.
- The panels are certified by internationally recognized organizations such as the International Electrotechnical Commission (IEC) and the Underwriters Laboratories (UL).
- These certifications are evidence of LONGi Solar Panels meeting industry standards for safety, reliability, and quality.
Cost and Value of LONGi Solar Panels
LONGi Solar Panels offer a cost-effective solution with a quick payback period of 5-10 years, making them an attractive option for those looking to invest in solar energy. LONGi also provides financing options through partners, and customers may qualify for incentives and tax credits, further reducing the overall cost.
These Solar Panels are designed to withstand harsh weather conditions, with high resistance to salt mist and ammonia corrosion. They are certified by leading organizations, ensuring safety and reliability. With a warranty of 12 years for product defects and 25 years for performance, LONGi Solar Panels offer a long lifespan and reliable performance.
Compared to other brands, LONGi Solar Panels are known for their high efficiency, durability, and reliability, making them a popular choice for customers seeking maximum energy output and minimal environmental impact.
