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Bifacial solar panels: more energy and more applications. Vertical bifacial solar panels

Bifacial solar panels: more energy and more applications. Vertical bifacial solar panels

    bifacial, solar, panels, energy, applications

    Bifacial solar panels: more energy and more applications

    Bifacial solar panels capture light not only from the front of the panel but also from the back. With double-sided solar panels (PV), we increase the electricity yield by about 10 to 20%. We are developing knowledge and technology for bifacial solar panels and a complete model that predicts energy yields.

    Bifacial solar panels can reduce electricity costs enormously. For example, PV installations or projects produce the same amount of electricity on a smaller roof area. Also, fewer PV modules and system components are needed on the same base area, which leaves more light and rainfall available for ecology, for example.

    Applications of bifacial solar panels

    A bifacial PV panel generally consists of 60 or 72 solar cells. These solar cells have an almost identical metal grid at the front and back, with more than 95% of both sides available to capture light.

    Bifacial panels are installed in standard PV power plants, but also in emerging market segments. Think of PV integrated into the infrastructure, such as in noise barriers. Or floating solar panels on open water or in combined hydro and aquaculture farms.

    Another application is in combination with solar tracking systems, where you can virtually add up the additional yield of the solar tracking system and the bifacial panels. This last option also offers many possibilities to vary the irradiation under and between the panels. Ideal for agriculture or nature conservation.

    Higher energy yield with bifacial solar panels

    We design and develop bifacial modules that meet specific requirements, for example by reducing the amount of silver in the panels to optimise costs and performance under reduced light conditions. We are also working on the application of light-capturing materials to improve light coupling in and on modules. In addition, we are looking for solutions for cell and bypass diode positioning to take into account increased shading due to robust frames, for example in the case of noise barriers.

    We have also developed a new bifacial solar panel with a white layer around the cells. These white, bifacial solar panels generate 5% more energy compared to partially transparent bifacial panels with only transparent glass and plastic layers around the cells. The yield of the white bifacial panels compared to single-sided panels depends on the location of the installation and can be about 10 to 20% higher.

    bifacial, solar, panels, energy, applications

    Predicting energy yield with BIGEYE

    We developed BIGEYE in order to make an accurate prediction of the energy yield of a PV system with bifacial modules for all parties. This is a very advanced, and as far as we know the most complete, simulation model for a PV system. With BIGEYE, we can simulate the electricity output of PV systems with any configuration and at any location. With meteorological and environmental data, we calculate the electricity production per hour, day, month or year.

    bifacial, solar, panels, energy, applications

    For PV installers, project developers, and system owners, it is very valuable to have a precise energy generation profile. This allows them to provide optimal connections to the local, national, and global electricity grid. In addition, BIGEYE helps to design PV systems in such a way that power generation better matches daily needs. For example, by increasing energy generation in the morning or afternoon.

    Knowledge and technology

    Our experts are working on various new cell concepts with the aim of increasing efficiency and simultaneously reducing manufacturing costs. One of the bifacial cell concepts we have developed is an industrial version of the so-called TOPCon solar cell. This cell has special intermediate layers on the back, consisting of a very thin oxide and polysilicon layer. This structure counteracts the losses on the surface. We developed this cell concept in collaboration with Tempress Systems, among others, under a TKI Urban Energy grant project and in several commercial projects. This technology has now been embraced by the industry and cell efficiencies of over 23% are being achieved in production.

    In one of the latest bifacial cell concepts, very thin metal oxides are incorporated in the interface layers. These interface layers can be applied on both sides and have the same quality as those in the TOPCon cell, but they are much more transparent, allowing sunlight to enter the solar cell optimally. The bifacial performance of the solar cell can therefore be improved considerably, while production is potentially simpler and therefore cheaper. This concept is still under development in collaboration with Solmates, Levitech, Eindhoven University of Technology, and Delft University of Technology. We expect that with this technology, inexpensive solar cells can be produced with more than 25% efficiency.

    Bifacial solar panels: what you need to know

    A new product trend is emerging in the solar industry. Bifacial solar panels are solar panels that can capture sunlight on both their front and back and are an interesting new solar solution for certain types of solar installations.

    What are bifacial solar panels?

    Traditional (monofacial) solar panels capture sunlight on one light-absorbing side, and light energy that cannot be captured is reflected away. This is not the case with bifacial solar panels- rather, these types of panels have solar cells on both sides. This enables the panels to absorb light from the back as well as the front. Practically speaking, this means that a bifacial solar panel can absorb light that is reflected off the ground or another material.

    Bifacial solar modules can be effective in certain residential applications like pergolas and some ground-mounted systems. But, for the majority of property owners considering a rooftop installation, bifacial panels don’t make sense – bifacial modules are best used in commercial or utility-scale applications where panels are elevated and angled away from a mounting surface, allowing light to reflect into the back of the panel.

    Bifacial vs. monofacial solar panels

    The majority of solar panels are monofacial. This means that they have one photovoltaic side which can absorb light from the sun and convert it into energy. Bifacial solar panels can absorb light on both sides and require less space.

    Because bifacial panels have more surface area to absorb sunlight, they have been shown to be more efficient than traditional panels. If bifacial modules are set up vertically, they can capture energy at two of the sun’s peak times: sunrise and sunset. Vertically set-up panels are also more resistant to weather like snow sun that could cover a panel and block some of its efficiency. Bifacial solar panels are also more durable than traditional panels.

    bifacial, solar, panels, energy, applications

    Despite some advantages, there are also many reasons that monofacial panels could still be better for you compared to bifacial solar panels. Because bifacial panels are so unique, they often require additional work and equipment to function. Despite their higher efficiency ratings, they still may cost more for homeowners because of things like ground mounts which are required for vertically mounted panels. There are also additional needs like solar tracking systems which are required.

    Top bifacial solar panel manufacturers

    Compared to traditional panels, there are relatively few manufacturers for bifacial panels. Here is a list of some of our favorites.

    LG Solar Panels

    LG Solar panels manufacture some of the highest rated and most efficient solar panels on the market. One of their most popular offerings is the LG NeON2 BiFacial series of panels. They have an average power of 5.6W per cell and 19.5% efficiency.

    Jinko Solar

    Jinko Solar is known for their low cost offering of solar panels. Their Tiger Bifacial series has an average power of 3W per cell and are 20% efficient on average.

    Bifacial solar panel design

    A bifacial solar panel looks significantly different than a traditional monocrystalline or polycrystalline silicon panel. Bifacial panels are usually made from monocrystalline cells, but polycrystalline designs exist as well. One of the most noticeable physical traits of bifacial panels is their slim profile – many bifacial designs call for limited framing, and the modules themselves are housed in a thin, transparent layer which can be a dual-glass design or made with a clear backsheet.

    The design of mounting systems for bifacial solar panels is also different than traditional solutions. In order to capture the most energy, bifacial panels need the least amount of shaded space possible on the front and back of their surfaces. New racking solutions for bifacial panels can utilize small junction boxes, narrower support rails, and vertical supports only at the very corners of the racking system to reduce shading on the backside of modules.

    Bifacial solar panels for commercial and utility-scale applications

    The ideal use case for bifacial solar panels is in commercial and utility-scale solar installations, especially those that utilize solar trackers. In a study conducted by LONGi. a solar panel manufacturer, bifacial panels yielded 11 percent more energy than standard solar panels in a tilted, ground-mounted solar installation in China. impressively, a system using bifacial panels paired with solar trackers yielded 27 percent more solar energy than a similarly sized system using traditional panels.

    Bifacial panels have the potential to boost energy output for large-scale solar installations due to their ability to absorb energy on both sides. When a solar panel is mounted above the ground, as is the case in most commercial systems, sunlight that strikes the ground beneath the panel is reflected up and can be absorbed by back-facing solar cells. Additionally, depending on the surface below, more or less light will be reflected back up to the bifacial panels. Generally, lighter colored surfaces like sand will lead to more reflected sunlight than darker surfaces like asphalt or dirt.

    Can you use bifacial solar panels for residential installations?

    In general, bifacial solar panels are not best suited for residential rooftop solar installations. Given their likely price premium when compared to traditional monocrystalline or polycrystalline panels, they make the most sense for larger solar projects that allow for reflected light to easily reach the back of the panels.

    While bifacial panels are best suited for commercial or utility-scale solar installations, they can be used in select residential cases. Free-standing structures like pergolas can benefit from bifacial panels, which will provide partial shade in addition to generating energy. Bifacial panels can also be used in any other case where there is nothing directly behind the solar panels. For example, awnings and canopies made from bifacial solar panels allow for reflected light to reach the back of the panels.

    If you’re considering a ground-mounted solar system instead of a rooftop installation, bifacial panels may be suitable for you as well. Similar to in commercial and utility applications, a residential ground-mounted system is propped up above the ground, allowing for light to reach the backside of bifacial panels.

    Tariff exemptions for bifacial solar panels

    Tariffs on solar panels and equipment have had major effects on the industry in the last few years. Starting in 2018, president Trump leveled tariffs on solar panels produced non-domestically. These tariffs were intended to spur growth in the US solar manufacturing and production industry. This limited access to cheaper solar panels.

    Since taking over the presidency, the Biden administration has maintained these tariffs, deciding to extend them for an additional 4 years in 2022. They made a crucial decision, however, in choosing to exempt bifacial solar panels. This is extremely important for consumers in that it allows you to have access to cheaper panels.

    Are bifacial solar panels worth it?

    Bifacial solar panels may be worthwhile for commercial and utility solar developers, but they typically don’t make as much sense for residential rooftop projects.

    Bifacial solar panels are more expensive than traditional solar panels and can cost up to 0.10 more per watt.

    Bifacial panels are able to absorb and convert energy from the sun on both sides in comparison to traditional panels which can only do so on one side, making them less efficient.

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    Looking to go solar? Here’s everything you need to know in… Best solar panels in 2023: Top products compared Solar shingles: what you need to know in 2023 What are the most efficient solar panels? Top brands in 2023 Are solar panels worth it in 2023?

    About Jacob Marsh

    Jacob is an EnergySage writer with expertise in solar, electrification, and renewable energy. With over five years of experience researching and writing about the home energy industry (plus a degree in Geological Sciences from Tufts University), he brings a unique scientific approach to writing and investigating all things energy.

    Bifacial solar panels

    In this section of our website you can find all bifacial solar panels that we currently have in stock. These are powerful PV modules, ideal for commercial and industrial projects. Since bi-modules only recently rose in popularity and not everybody is familiar with them, let us tell you a little about them.

    What are bifacial solar panels?

    A bifacial solar panel is a PV module with two active sides. Instead of a white or black back sheet on the rear side, it has another layer of glass that protects solar cells. It often doesn’t have a frame.

    How do bifacial solar panels work?

    The front side of a bifacial panel works just like any normal panel would do. However, the rear side harvests the light that is reflected from the surface and diffused light. Usually, it gives you up to 30% of the front side’s production. For example, a 400 Watt bifacial solar panel gets a 130 Watt bonus if the conditions are good. Since the backside of the bifacial panel is made to work with diffused light, it performs well in low light conditions, such as cloudy weather, fall and winter days.

    How to install bifacial solar panels?

    In theory, bifacial modules can be installed just the same way as the standard panels are. However, bifacial panels are more often used in ground-based installation or systems on flat roofs, because you need a good tilt to take advantage of a rear side. Your installer has to take albedo into consideration which is the reflectivity of a surface where panels are installed. Asphalt or black surface, for example, gives the lowest bifacial gain, and sometimes installers put a white membrane underneath the modules to increase albedo.

    Here is a diagram of bifacial solar panels functioning. You can see that solar panels are often raised from the ground to prevent overheating. Careful planning is key: you want to minimize the shading of not only the panels, but the surface as well.

    What are the benefits of bifacial solar panels?

    There are several. For starters, bifacial solar panels efficiency is higher than standard. Mono-side panels have a 17-21% energy conversion rate on average. When the rear side of a bi-module works at full capacity, its efficiency can reach 25-27%. Thus you need much less space to build a powerful solar system.

    Output warranties usually last a bit longer for bifacial panels. Standard solar panels usually have a 25-year warranty for performance. Bifacial panels come with a 30-year warranty.

    Besides, bifacial panels can be installed in a number of different ways — for example, vertical installation is a viable option. Different configurations allow your installation to provide more power in different times of the day.

    Finally, some prefer the design of bifacial panels to standard one. Bifacial panels sometimes are frameless and they are often transparent which makes them blend well with your roof.

    Who produces bifacial solar panels?

    and more companies start making bi-modules; first and foremost, brands that aim to produce panels for commercial and industrial installations take interest in them. JA Solar, Jinko, Trina, Canadian Solar can be listed among most popular bifacial solar panels manufacturers. Solar experts see great potential in bifacial modules and expect them to become more and more popular, which means we can expect more and more brands to start making them.

    Cost of bifacial solar panels

    Bi-modules are more expensive than standard solar panels of the same power. However, you have to take into consideration the bifacial gain that the rear side provides. When it’s properly used, a bifacial panel proves to be cost-effective — for example, a 480W bifacial panel with 30% production bonus from the rear side is going to produce more energy than two 300W panels. In these circumstances a bifacial solar panel price is going to be less than the price of two panels and it will also occupy less space.

    The cheapest panels come from China. For example, Trina Solar bifacial panels are a solid choice: the company is known to be modern and innovative. Today this company competes in Top-5 world’s solar brands and offers a diverse product line with relatively low prices. Another good choice would be LONGi Solar bifacial panels. The modules from this Chinese brand tend to be even cheaper, though slightly less popular and efficient.

    American companies also make bifacial modules for residential and commercial solar projects. Their tend to be a little higher, but the quality may be slightly better. American companies also often provide better warranties for their products. For example, you can go for Canadian Solar bifacial panels that are known to excel in low-light conditions. Canadian Solar is a semi-Chinese brand with manufacturing sites in Asia which explains its moderate prices. We can also recommend taking a look at Silfab bifacial solar panels: this Canadian brand provides the most efficient panels in NA and gives solid warranties for its products.

    Why buy from us

    We offer a variety of different bifacial solar panels for sale from brands from all over the world. Here are the things that make A1SolarStore stand out in line:

    • Our fulfillment centers are located on the East and West coasts of the United States. You can use the map of our centers to check the availability of products.
    • We process all orders in 24 hours and ship them in 48 hours. Inverters and charge controllers are shipped free of charge.
    • Orders are delivered by freight transport in 4-7 business days. You can also grab your order yourself from the fulfillment center.
    • We sell the best bifacial solar panels only from verified manufacturers — no counterfeit products.
    • We offer affordable pricing on all solar energy equipment

    If you are interested, browse through various models in our store. You can use our solar calculator to get an idea of how many panels you’ll need and how much the system is going to cost. Our managers are always happy to answer any questions concerning bifacial solar panels quotes, prices, warranties and shipment.

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    How can vertical solar panels save farm land and transform agriculture?

    Marta studied Political Science and Media Journalism at the Catholic University of Portugal (UCP) and has developed her journalistic career working for the Portuguese newspapers Diário de Notícias, Correio da Manhā and media outlets in Brussels. She is a reporter for Travel Tomorrow, and is also engaged in delivering communications services and EU policy research for different consultancies in Brussels. A former Blue Book trainee of the European Commission, Marta has a keen interest in EU and global affairs, and experience in reporting and interpreting information. Whenever she can, Marta loves traveling, exploring nature and learning about regenerative agriculture. She is also quite enthusiastic about space ventures and the cosmos.

    Vertical solar panels can help farmers harness the power of the sun into growing the best crop but also converting the sun’s power into electrical energy.

    1. Vertical solar panels

    Solar panels are large modules which tend to take a lot of useful space, especially in food-producing lands. With the innovative vertical solar panels, dubbed Sunzaun, the California-based company Sunstall is offering alternative solutions which can be used in existing fields and arable lands without sacrificing them for clean green energy. Sunzuan’s vertical system with 43 panels is currently installed at a winery in California and produces 23kW of power.

    Installing vertical panels is usually more costly compared to regular solar panels. However, Sunzuan’s vertical solar panels break this norm by making it simpler to install them since no elevated platforms need to be built. The vertical panels can be lined up wherever it is convenient to place them and can even be installed with a slope of up to 15 degrees.

    This is just the beginning to understand the interaction between vertical solar, crop yield, land utilization and financial benefits for farmers. Yield also depends on location, design of solar systems and many details.


    2. Bifacial modules

    Installing vertical solar panels doesn’t come with great hassle, as the process is very similar to the conventional solar systems. The difference, however, is that this system combines the new invention of bifacial solar modules and the entire array stands like a boundary wall in the field. Installing these modules in an east-west configuration can produce the same amount of electricity as a south-facing solar panel, according to recent studies.

    Indeed, researchers at Leipzig University of Applied Sciences claim that mounting bifacial solar panels with one side facing east and the other facing west would produce more renewable electricity and reduce one of the side effects of traditional solar energy farms — an abundance of electricity at midday and not enough in the morning or afternoon.

    The Sunzaun is designed to accommodate framed and unframed bifacial panels and to manage the wires in a safe and sound way.


    “Bifacial solar panels can use solar energy from both sides. Installed in an east-west orientation, most electricity is generated in the mornings and evenings. This would reduce the need for electricity storage and at the same time keep the space required for electricity generation low,” said Sophia Reker of the Leipzig University of Applied Sciences and first author of the study.

    3. Versatile

    Despite the great promises for farmers and agriculture, the vertical solar panel design isn’t restricted to agricultural fields — it can be lined up along the length of highways, railroads, fences, or even balconies in residential areas. The panels have been tested and successfully endured winds up to 0.084 psi and are currently in the process of obtaining their UL2703 certification, which assures the safety performance of the modules and the system.

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