A Guide to Bifacial Solar Panels (2024)

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  1. what is a bifacial solar panel?
  2. What are the types of bifacial solar panels?
  3. Why HJT solar panel is the best choice for bifacial solar panel?
  4. What is advantages of bifacial solar panel?
  5. What are the Applicable Installation Scenarios for Bifacial Solar Panels?


What is a Bifacial Solar Panel?

A bifacial solar panel is a solar device crafted to harness solar energy from both its front and back surfaces. Contrasting with standard monofacial solar panels, which are equipped with photovoltaic cells on only one side, bifacial panels feature these cells on both sides. This allows them to generate power from light hitting them from either direction.

These panels excel in capturing direct sunlight on their front side as well as light reflected off the ground or adjacent surfaces. Such a capability enhances their overall efficiency, enabling them to utilize extra solar energy, particularly in settings where reflective surfaces like snow, water, or light-colored terrain are present.

What is a bifacial solar panel?

What are the Types of Bifacial Solar Panels?

Bifacial solar panels are categorized into three main types:

  1. Glass/Glass: These bifacial panels have glass surfaces on both sides, making them structurally stronger and more capable of resisting heavier loads than other types of bifacial or monofacial solar panels.
  2. Glass/Transparent Backsheet: This type features a glass front side, while the back is covered with a transparent backsheet. These panels are generally more cost-effective than their glass/glass counterparts.
  3. Glass/Backsheet: Similar to other bifacial models, this version has a glass front and a non-transparent backsheet on the rear side.

Additionally, a specific example of a glass-glass bifacial solar panel is Maysun’s HJT. This panel is designed for durability, being resistant to weather, corrosion, and abrasion due to its double-sided glass construction. It employs POE encapsulation, which contributes to the panel's extended 30-year product and performance warranty.

Why is the HJT Solar Panel the Best Choice for Bifacial Solar Panels?

The HJT (Heterojunction Technology) solar panel stands out as an optimal choice for bifacial solar panels for several key reasons:

  1. High-Efficiency Cells: The HJT solar panel uses a 210mm high-efficiency solar cell. A notable feature is the TCO (Transparent Conductive Oxide) film, which enhances photovoltaic conversion efficiency by 25%. It achieves this by effectively passivating the interface defects between crystalline silicon and doped amorphous silicon. This advanced technology significantly boosts cell performance, markedly improving the energy conversion efficiency of the solar cells.
  2. High Bifaciality: The HJT cell is designed with a symmetrical structure on both the front and back sides, enabling over 95% efficiency in backside power generation. When compared to Perc and Topcon technologies, the HJT cell exhibits a substantial increase in backside power generation, over 30% more. This unique design allows the HJT cell to more effectively utilize ambient light resources, leading to a considerable enhancement in overall solar cell performance.
Why is HJT solar panel the best choice for bifacial solar panels

What are the advantages of bifacial solar panels?

  1. Maximize Land Use & Enhanced Efficiency: Bifacial solar panels optimize land use while boosting efficiency. They capture a larger amount of sunlight in the same area, significantly increasing energy capacity. Maysun Solar’s HJT bifacial double-glass solar panels, for instance, achieve 30% higher rear-side energy gain compared to PERC and TOPCon technologies. Additionally, the rear-side electricity utilization rate of HJT solar panels surpasses 95%. This makes them particularly valuable in solar projects where space is at a premium.
  2. Climate Adaptability: These panels perform exceptionally well in various climatic conditions. Their adaptability to both high and low temperatures and seasonal changes ensures reliable power generation in diverse weather scenarios.
  3. Longer Generation Window: Bifacial panels extend the duration of power generation by capturing light on both sides. They continue generating power throughout the day and under different lighting conditions, including in low-light environments.
  4. Increased System Capacity Factor: By efficiently utilizing sunlight at different times, bifacial solar panels enhance the system capacity factor. This results in heightened overall efficiency of the power plant and contributes to a reduced Levelized Cost of Energy (LCOE).

What are the Applicable Installation Scenarios for Bifacial Solar Panels?

1. Large-scale Terrestrial Photovoltaic Power Plants: Bifacial solar panels demonstrate their superior performance in large-scale terrestrial photovoltaic power plants. They excel at harnessing sunlight reflected from the ground, particularly in areas with high ground reflectivity like sand or white coverings. This feature enables large ground-mounted PV plants to more effectively gather sunlight, leading to increased overall energy production.

Large-scale Terrestrial Photovoltaic Power Plants

2. Commercial Rooftop Systems: For commercial buildings with adequate rooftop space, bifacial solar panels are an excellent option. They are particularly adept at maximizing the use of reflected sunlight from the roof surface, especially when the roofing material has a high reflective index. Implementing bifacial solar panels in commercial rooftop systems can significantly enhance the energy collection efficiency of the solar panels. This setup not only boosts energy efficiency but also provides a sustainable energy solution for commercial buildings.

Commercial Rooftop Systems

3. Parking Lot Awnings: The installation of bifacial solar panels on parking lot awnings serves a dual purpose. It not only offers the essential shading for vehicles but also harnesses sunlight simultaneously from both the top and bottom surfaces. This innovative approach not only enhances the environmental quality of the parking area but also boosts energy efficiency. Furthermore, it facilitates a sustainable energy supply, effectively turning a standard parking lot into a green, power-generating space.

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4. Agricultural Photovoltaic: The use of bifacial solar panels extends beyond the energy sector, integrating effectively with agriculture to create agro-photovoltaic systems. When installed above farmland, these panels facilitate a dual-purpose use of the land: agriculture and photovoltaic power generation. The crops growing beneath the solar panels can benefit from the sunlight filtering through, while the panels themselves capture reflected sunlight. This setup exemplifies the efficient utilization of resources, harmonizing solar energy production with agricultural practices.

4. Agricultural Photovoltaic:

5. Floating Solar Systems: Implementing floating solar systems on water bodies by installing bifacial panels on the water's surface significantly boosts power generation efficiency. This approach benefits from the reflective properties of the water, allowing for the dual capture of sunlight. Additionally, it offers protective benefits for the water body, representing an innovative approach to sustainable energy development.

5. Floating Solar Systems:

6. Vertical Installations in Urban Areas: In densely populated urban areas where space is a premium, bifacial panels can be vertically installed on various structures. This space-efficient approach enables them to capture sunlight from both sides. These installations can be integrated into building facades, sound barriers along highways, urban transit stations structures (like bus and subway stations), pedestrian bridges and overpasses, as well as parks and recreational areas.

Vertical Installations in Urban Areas

7. High Latitude Regions: In areas with low sun angles, such as near the poles, bifacial panels are more advantageous than traditional panels. They are capable of capturing direct sunlight on the front side and reflected sunlight from snow or other surfaces on the back side.

Vertical Installations in Urban Areas

In these diverse scenarios, bifacial solar panels provide a significant benefit by utilizing their dual-sided design to harvest more sunlight and produce more energy compared to traditional single-sided panels. This versatility makes them a highly efficient choice for a wide array of solar energy applications.

Since 2008, Maysun Solar has been dedicated to producing premium photovoltaic modules. Our extensive product range includes half-cut, MBB, IBC, HJT, and shingled solar panels in various styles like full black, black frame, silver, and glass-glass. These panels not only offer exceptional performance but also enhance the aesthetic appeal of any building. Maysun Solar has established offices, warehouses, and strong partnerships with top installers worldwide. For the latest solar panel quotes or any other photovoltaic-related inquiries, Maysun Solar invites you to get in touch. We are eager to assist you with your solar energy needs.


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