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Bifacial Technology

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Bifacial Technology in PV

Double-sided solar panels have many advantages over traditional solar panels. Energy can be produced from both sides of the bifacial module, increasing the total energy production.
They are often more durable because both sides are resistant to UV radiation, and the reduced production potential (PID) problems are less when the duplex unit is double glass (eg Akcome, Risen, Jinergy or JOLYWOOD ). The balance of system cost (BOS) is also reduced when more power can be generated from double-sided bifacial modules as compared to single-sided modules.
In Europe, the largest number of Bifacial modules is provided by N-type producers like AKCOME, Jinergy, Risen or Jolywood. Mainly thanks:

  • Even 30% more power production 
  • Strictly connected to HJT and N-type technology
  • Mostly in Glass-Glass configuration
  • Very low degradation
  • The lower temperature at which the N-Type is produced
  • Hi-tech production process
  • Best BOS and LCOE costs

Why solar panels with Bifacial Technology?

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Best Performance

Highest Efficiency and power of solar panels

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Long Warranty

30 years with only 0,4% annual degradation

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inspiring technology

N-type Bifacial Cells cover in Glass glass frame

Albedo effect and bifaciality coefficient ?

What effect does the substrate surface have on the performance of the bi-facial module?
The surface on which the PV panels stand plays a big role in the efficiency of their work. An important element is the shaping of the surface itself and its ability to reflect sunlight. The flatter the ground, the more light will go back to the modules.

An important element for the effectiveness of two-sided modules was also the so-called albedo coefficient.

How Work Bifacial Cells?

bifacial effect

Albedo Effect and Bifaciality Coeficient

albedo effect

As can be seen from the above data, white surfaces reflect light best. In the case of the brightest ground, the albedo coefficient reaches standard approx. 15%, and in the case of snow/white, it reaches 30%.

Therefore, the place of installation of bifacial panels is not without significance. Different yields will be from modules that are installed, for example, in the vicinity of the lawn, and different on a concrete surface additionally painted white.

What Bifacial Technology offer

Bifaciality Advantage


LeTID (Light and Elevated Temperature Induced Degradation) is a failure or defect caused by light and high temperatures. Ntype HJT solar panels are free of it or LeTID has minimum influence on production. TCO film in the HJT module prevents charge accumulation on the surface, resulting in high resistance to PID.

Highest Fire Resistance

Most common configuration for Bifacial Solar Panels is double glass. And even when bifacial modules have not have Fire Class A, still is much more protect anti-fire than standard back sheet modules. Especially on residential roof solar installation bifacial glass glass technology is must be chosen.

Bifacial POWER

Due to the technical production and properties of N-type silicon cells, the bifaciality of HJT Solar Panels is the highest on market at 80-95%. PERC bifacial factor is on average level 70%. HJT cells are the best solution for bifacial solar modules. Generally bifacial panels enables 5%-30% energy gain on the back, depending on the factors such as ground reflection, region type etc.

Highest Average Efficiency >24%

Due to the high Minority carrier lifetime of N-type substrate materials, N-type crystalline silicon modules demonstrate better power generation characteristics than conventional P-type crystalline silicon modules under low light. The effective power generation time of HJT is 11.07% more than that of conventional solar modules.
Glass-glass panel
HJT factory solar panels
HJT cell production

state-of-the-art Solar Solution

How is construct N-type CELL?

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What is a double-sided solar module?

Double-sided modules generate solar energy from both sides of the panel. While traditional panels with an opaque back coating are single-phase, the bifacial modules reveal both the front and back sides of the solar cells. When bifacial modules are installed on a highly reflective surface (such as a white roof or on the ground with light stones), manufacturers of double-sided modules say production is increased by up to 30% only due to the extra power generated from the rear. Bifacial modules are available in many versions. Some are framed and some are frameless. Some are made of double glass and others have transparent pads. Most manufacturers use monocrystalline cells, but polycrystalline designs exist. The only thing that is constant is that power is generated from both sides. There are frameless double glass modules that reveal the back side of the cells, but are not double-sided. True bifacial solar panel have contacts / busbars on both the front and rear of the cells.

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Bifacial Modules Future?

What are the perspectives for bifacial modules? The challenge with bifiacial design has always been the unpredictability of power output as it depends on the ground behind the modules - white commercial roof, dark tile, grass and gravel. It is difficult to model and estimate the productivity of double-sided PV modules. Bifacial modules do not differ from the competition in terms of costs, which means that the investment costs, even with some additional production, drop. The Chinese solar panels producers like Akcome, Jinergy or Risen believes that we are entering a new era of photovoltaics, in which high-efficiency modules are paramount. The bifacial technology supports the concept of using high-quality materials to achieve high energy efficiency. Bifacial modules are probably the future of the industry. Double-sided PV modules inherit all the advantages of mono PERC modules: high power density resulting in significant BOS savings, high energy yield with better performance in low light and lower temperature coefficient. In addition, double-sided PERC modules also collect energy from the rear side, showing a higher energy yield.

Why choose Bifacial Panels?

Bifacial Technology Profits

Why Bifacial Panels Are The Best?

Best Advantage of Bifacial Solar Panels

Explore the Experts

Best Bifacial Module Producers

commit to HJT Solar Revolution

Bifacial Solar Panel- best Solution for Utility scale investitions?

 Long warranty for power production >30 Years

 Highest Efficiency >22%

 Low Yearly degradation, only >0,4%

 Best Bifiaciality efficiency >85%

 Lowest Temperature Coefficient 0,24%-026%/°C

 Very low modules failure risk factor

Utility Scale HJT installation
Utility Solar Farm

All You Need To Know About N-type Technology

frequently asked questions

HJT(ntype) bifacial efficiency can achieve even 27%. But usually producers like Akcome and Jinergy use Heterojunction solar cells with 24%-25% efficiency. Compare to PERC Cell, HJT can achieve even 20% more power.

Bifacial HJT solar panels have the best efficiency in serial production. Scope of it is between 21%-22,5% with R&D plan even to 26%. N-type module has the best performance and most reliable characteristic resistance for most common fail from all over solar technology.

HJT with N-type technology solar Panels with 120 cells have a scope of power between 370W-390W and for 144 cells 425W – 470W. At the end of 2021 Power of HJT modules will achieve >500W and in soon future will be >600W.

N-type Bifacial technology ensures a long safe warranty for 30 years of production and 12 -20 years for a panel, depends on the producers. It’s more approx. 5 years than common PERC panels.

Bifacial HJT solar panels with N-type cells are value for money solutions. Compare with standard backsheet modules, the price for Heterojunction is a little bit more. But compared with Bifacial, glass-glass solar panels, HJT is the best solution and has more advantages worth a few % higher price.

Higher power, bifaciality, efficient production under extreme conditions, combined with the world’s lowest degradation, no LID and PID effects and a double glass structure (GLASS-GLASS), allows you to generate significant savings over 30 years of use compared to PERC panels.

Glass is the best protection for the silicon cells that are the heart of the photovoltaic module. A cell is a unit that generates electricity, but it is made of a delicate material that needs to be reinforced and secured externally. For this purpose, we have a good ally in the form of solar glass, which, in addition to being transparent, is an electrical insulator.

HJT PV team is not only a trusted advisor but solar panels broker. We are helping Clients from all over the world connect to trusted and checked HJT producers. Direct cooperation ensures the best prices and fast delivery, to all destinations.

Bifacial Solar Panels Sales and distribution

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EPC Cooperation

general contractor of photovoltaic investments

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Distributor In Europe

Container and Mega Watt sales

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Photovoltaic Broker

mediation in the purchase directly from the manufacturer