EVO B High Efficiency Back Contact Black Frame Solar PV Module 455W 450W 445W 440W 435W 430W 425W 420W

EVO B High Efficiency Back Contact Black Frame Solar PV Module 455W 450W 445W 440W 435W 430W 425W 420W

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EVO B High-Efficiency Back Contact Black Frame Solar PV Module 455W 450W 445W 440W 435W 430W 425W 420W

The EVO B back-contact solar modules feature electrical contacts on the rear, offering enhanced aesthetics and efficiency, reduced shading issues, and improved overall durability.


Electrical Parameters (STC*)

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Open Circuit Voltage (Voc/V)









Short Circuit Current (Isc/A)









Module Efficiency (%)









Power Output Tolerance (W)


Temperature Coefficient of Isc


Temperature Coefficient of Voc


Temperature Coefficient of Pmax



Advantages and Development History of Longi's Back-Contact Solar Modules


The solar energy industry has witnessed significant advancements over the years, leading to increased energy efficiency and cost-effectiveness. One such breakthrough is the development of back-contact solar modules, a technology that has gained prominence due to its numerous advantages. Longi, a leading solar technology company, has been at the forefront of this innovation, contributing to the growth of the solar energy sector. This article explores the advantages and development history of Longi's back-contact solar modules.

Advantages of Back-Contact Solar Modules

1. Enhanced Aesthetics:

Back-contact solar modules, also known as back-contacted solar panels, offer a sleek and modern appearance compared to traditional front-contact modules. The absence of visible grid lines on the front surface makes them visually appealing and ideal for residential and architectural installations.

2. Improved Efficiency:

Back-contact modules are known for their superior efficiency. By placing the electrical contacts on the rear side of the solar cells, they reduce shading and internal resistance. This design minimizes energy losses and maximizes the amount of electricity generated from the same amount of sunlight.

3. Enhanced Durability:

Longi's back-contact solar modules feature a robust design with reduced cell-to-module (CTM) distance, leading to enhanced durability and resistance to microcracks. This design ensures longevity and reliability, even in challenging weather conditions.

4. Higher Energy Yield:

The improved efficiency of back-contact modules results in a higher energy yield per square meter of installed solar panels. This means that Longi's modules can produce more electricity for the same installation area, optimizing space utilization.

5. Reduced Degradation:

Longi employs advanced materials and manufacturing techniques to reduce potential-induced degradation (PID) and light-induced degradation (LID). This ensures that the modules maintain their performance over time and have a longer lifespan.

Development History of Longi's Back-Contact Solar Modules

Longi's journey in the development of back-contact solar modules can be traced back to their commitment to innovation and sustainability. Here are the key milestones in the company's development history:

1. Early Research and Development:

Longi began its research and development efforts in the back-contact solar module technology in the early 2000s. They explored ways to improve the efficiency and aesthetics of solar panels.

2. Commercialization of Technology:

In 2015, Longi successfully commercialized their back-contact technology. They introduced a range of high-efficiency solar modules, gaining recognition for their innovative approach to solar panel design.

3. Ongoing Advancements:

Longi continued to invest in research and development, making incremental improvements to their back-contact modules. They collaborated with research institutions and partners to optimize their products for various applications.

4. Global Expansion:

The success of Longi's back-contact modules led to their expansion into international markets. They established a global presence, contributing to the adoption of this technology worldwide.

5. Industry Leadership:

Today, Longi is recognized as an industry leader in the back-contact solar module segment. Their commitment to quality, efficiency, and sustainability has cemented their position in the solar energy industry.


Longi's back-contact solar modules offer a range of advantages, including enhanced aesthetics, improved efficiency, durability, higher energy yield, and reduced degradation. The company's development history reflects its dedication to innovation and sustainability, ultimately contributing to the growth of the solar energy sector. As the demand for high-efficiency solar solutions continues to rise, Longi's back-contact technology is poised to play a significant role in shaping the future of solar energy production.

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  • Returns and exchanges are hassle-free: What's more, returns and exchanges are hassle-free to make your shopping experience easier and more enjoyable.

  • 30 days money back guarantee: If you are not satisfied with your item, we will provide you with a money back guarantee within 30 days.

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If you choose to use the surface mount installation as an option for your fencing, we will not warranty nor will assume liability for the fencing boards or the post/mounting system in the event of wind-related damage.

Standard warranty for color and material integrity will apply, but damage due to wind will be considered an act of nature and as such will not be covered. If you have any questions or concerns about the product before installation, please feel free to contact us.

Solar Systems Depot is a leading distributor of high-quality solar energy products and
solutions. We provide a wide range of solar panels, inverters, batteries, and other solar
accessories to meet the needs of residential, commercial, and industrial clients.

Our main office is located at 40 Wall Street 40 Fl New York NY 10005 We also have several
distribution centers across the country to ensure timely delivery of products.

You can reach us via phone at 888-334-0366 or email info@solarsystemsdepot.com or
through our website's contact form.

We offer a comprehensive range of solar products including solar panels, inverters, batteries,
mounting systems, and monitoring solutions. We also provide complete solar kits for residential
and commercial installations.

Yes, we provide free engineering services to help you design and customize the best solar
system for your needs. Our team of experts will create a layout and provide a free diagram to
ensure optimal performance and efficiency.

While we primarily focus on distribution, we can connect you with certified installers in your
area. Please contact our customer service team for more information.

Yes, all of our products are certified to meet international standards for quality and safety. We
work with reputable manufacturers to ensure the highest quality.

Yes, we offer warranties on all our products. The duration and terms of the warranty vary
depending on the product. Please refer to the specific product's warranty information for details.

Orders can be placed through our website, by phone, or by email. If you need assistance, our
customer service team is available to help you with the ordering process.

Yes, we have a return policy in place. If you are not satisfied with your purchase, you can
return the product within 30 days of receipt. Please refer to our return policy for detailed
instructions and conditions.

Delivery times vary depending on the product and your location. If the item is in stock, you
can expect to receive it within 5-7 business days. However, for most products, we offer a more
cost-effective option by shipping directly from our partner factory to your doorstep, which takes
around 30-40 days on average. This approach allows us to pass significant savings on to you.
The wait is well worth it for the significant cost savings that make it worth it for most customers.

Our order process is straightforward:
Initial Deposit: We require a 35% down payment to secure your order.
Final Settlement: The remaining balance is due 5 days prior to the scheduled delivery date,
ensuring a smooth and convenient process.

We accept various payment methods including credit cards, bank transfers, and PayPal. We
also offer financing options. Please contact our sales team for more details.

Yes, we provide technical support for all our products. Our team of experts is available to
assist you with installation, troubleshooting, and maintenance.

If you are interested in becoming a distributor or reseller, please contact our sales team for
more information on partnership opportunities.

Sustainability is at the core of our business. We ensure that our products are sourced from
manufacturers who adhere to strict environmental standards. Additionally, we are committed to
reducing our carbon footprint through efficient operations and eco-friendly practices

For any other questions or inquiries, please feel free to contact us directly. We are here to helpyou harness the power of solar energy!
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