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Bifacial Solar Panels. Frameless bifacial solar panels

Bifacial Solar Panels. Frameless bifacial solar panels

    Bifacial Solar Panels

    Bifacial solar panels, also known as BSCs, were invented in the 1970s and first produced for aerospace applications. For some years now, this technology has been used on a large scale to generate solar energy. The distinctive feature of these panels is that they capture solar energy and generate power on both sides. The use of bifacial solar panels is expected to be the leading standard by the year 2030.

    What is a bifacial solar panels?

    Bifacial modules produce solar energy on both sides of the panel. While traditional panels with the opaque back wall are monofacial, in bifacial panels, the solar cells capture light from both the front and back.

    bifacial, solar, panels, frameless

    When bifacial panels are installed on a highly reflective surface, such as a white background or above light-coloured bricks, their capacity can increase by up to 27%. The light reflected from the background against the panels is called albedo light. Studies show that a white background reflects 80% more of the albedo light than a black background.

    Many versions of bifacial panels are available. Some are frame mounted, some are double glazed and some use translucent back sheets. Most panels are constructed from monocrystalline cells, as these are significantly more efficient than polycrystalline solar cells.

    The common factor of bifacial modules is that power is generated on both sides of the panel.

    How do you install bifacial panels?

    The manner of installation of bifacial panels depends on the type of panel. Is the panel in a frame or not? Most manufacturers of framed bifacial modules supply their own clamps and fixing materials suitable for the specific brand.

    For frameless bifacial panels, the panel clamps are often fitted with rubber protective caps to protect the glass. It is important, despite the rubber caps, not to over-tighten the bolts, as this can damage the glass.

    The more obliquely a bifacial solar panel is positioned, the more power it produces. This is because, the more light falls on it from both sides, the better the output.

    Bifacial modules are best suited for flat roofs and flat surfaces, as they can be placed there at an optimal angle to the sun and as much reflected light as possible reaches the back of the cells.

    Advantages of bifacial solar panels

    Bifacial solar panels are more efficient and produce more energy than traditional solar panels, because power is generated on both sides of the panel (bi=two). Because both sides of the solar panel are UV-resistant, they are often also more durable than the common single-sided panels.

    On cloudy days, double-sided solar panels are significantly more efficient than regular panels. In addition, they are less susceptible to damage from weather conditions. Due to their durability, they often have a longer warranty period than single-sided panels.

    Brands LG, LONGi, Lumos Solar, Prism Solar, Silfab, Sunpreme, Trina Solar and Yingli Solar all currently have bifacial solar modules on the market. As more manufacturers produce this technology, bifacial solar panels will transform from a niche to a more mainstream product, which will also reduce costs in the future.

    Are bifacial panels the future?

    In all likelihood, in the coming years, the use of this technology will increase significantly for commercial solar power generation, but also in the residential market, the common All Black panels will probably be replaced in stages by the more efficient bifacial panels.

    The biggest challenge when installing bifacials is the background on which the panels are placed. Most roofs are covered with dark bitumen or dark gravel which do not reflect sunlight optimally and also retain heat, which does not improve the efficiency of the solar panels. The optimal background for the highest possible yield is white polymer.

    Checklist for residential double-sided solar panels

    If you are considering double-sided solar panels for a residential application, first ask yourself the following questions. If your answer to just one of them is YES, then the installation of double-sided panels may already be of interest.

    • Are you considering a ground-mounted solar system?
    • Do you have or would you like to build one or more pergolas?
    • Do you have or would you like to build canopies or a conservatory/veranda on your house?
    • Do you have a flat roof that is white or silver-coloured or a flat roof that can be painted in these colours?

    Double-sided panels can be used very creatively in conservatory or veranda roofs, in walls or yard fences.

    Manufacturers of double-sided solar panels

    There are many bifacial solar panel suppliers offering a wide range of panels. The most important are:

    Amerisolar: is a US supplier that has its bifacial modules manufactured in the US and China and supplies users around the world.

    Silfab Solar: is a North American manufacturer that produces bifacial solar cells.

    Solitek: is a supplier from Lithuania that produces both mono and double-sided solar panels.

    Sunpreme: is an American supplier that has outsourced production in China. Sunpreme has various sales partners around the world.

    ESTG is a wholesaler of solar panels and other sustainable electrotechnical products, such as solar inverters. EV chargers. solar batteries and thermal heating. With a wide range of A-brands, ESTG supplies installers across Europe.

    Big banker thinks “world’s” largest rooftop bifacial solar panel install is worth it

    JP Morgan Chase has completed a 2.8 MW rooftop bifacial solar panel installation, using Prism Solar modules, on their Columbus, Ohio location that will meet 18 percent of the site’s electricity usage.

    Prism Solar. Glass on Glass bifacial


    As of yet, the data suggests that to gain the greatest benefit from bifacial solar modules, you need place them at least a meter or more above the ground to maximize the reflection that the backside of the module gains.

    Per coverage by local reporter Tristan Navaera, JP Morgan Chase has completed an installation of 2.8 MW of bifacial solar modules (image of actual site below), manufactured by Prism Solar in Highland, New York. The company currently manufactures 60 and 72 cell frameless bifacial solar modules on their 60 MW/year lines. The 72 cell product ranges from 360 to 370 watts (pdf specification page), meaning somewhere between 7,500 and 7,800 solar modules were installed.

    Prior news noted that Prism Solar signed a module supply agreement which named them the preferred supplier for 2017-2020 JPMorgan Chase Solar PV (Photovoltaic) Installation Program for locations in the USA. JPMorgan Chase has noted a goal of powering their facilities with 100% renewable energy.

    But now, the purpose of writing this article (beyond what might be the world’s largest rooftop bifacial solar installation) – will bifacial solar modules gain any appreciable benefit when they are installed close to the roof, on an all white surface?

    As of now, the professionals in the know have told pv magazine USA that the height that bifacial solar panels are installed at makes all the difference. NEXTracker’s Daniel Shugar told us that when installing bifacial modules on single axis trackers, their two-in-portrait NX Gemini system does produce less, all things being equal (which they aren’t when considering which technology to use), than their Horizon system – which is closer to the ground.

    Sunfolding published an article with us giving us a rough logic (below image) showing why they believe single module single axis trackers benefit the most from ground reflection. Their equations, and they are a very mathematics focused organization, suggest that somewhere around the single axis module height just fits best.

    And this author, who is focused on commercial and industrial (CI) rooftops does not debate where the best benefit comes for bifacial solar modules. First off, because this author is not an analyst and we don’t have the machines to test these things, but secondly and most importantly, because CI doesn’t need the best benefit.

    While manufacturers like LONGi boast that, under perfect conditions, bifacial modules can potentially boost production by 20%, we in the CI space merely need some benefit – and what that value is, depends on what the additional costs using bifacial solar modules on the rooftop will be.

    And we do expect to have at least some benefit. First off, the CI rooftop is the home of the white thermoplastic olefin (TPO) roof is well known for its ability to reflect heat (lowering cooling costs as well) and light. White TPO offers the highest albedo ratings of any material as LG Solar points out in the below image.

    To make the best use of this product will require pressure washing under the modules as the reflectivity falls off quickly if the roof gets dirty, and flat roofs definitely do as water pools. However, modules do occasionally need be cleaned anyway – so maybe we won’t add a unique cleaning, but a more indepth cleaning. A second cost variable to consider might be the hardware used, as noted in the main image, the Prism Solar modules are frameless, glass on glass and use a clip system for their racking versus standard products on the markets. Will the hardware or installation process cost more?

    This author doesn’t know the answer yet, but they assume even if there is a few percentage points of additional production from the product spread over the 30 year lifetime of the modules, then it becomes more than worth it to spend a few extra pennies on day one. industry experience is needed, and we hope to see the PVELs and NRELs or the world to teach us, or we’ll simply make a judgment call and go for it – as JPMorgan Chase has.

    This content is protected by copyright and may not be reused. If you want to cooperate with us and would like to reuse some of our content, please contact:

    John Fitzgerald Weaver

    Commercial Solar Guy is a commercial utility solar developer, general contractor for commercial and residential solar, as well a consultant. We construct projects in MA, RI, NY, and soon PA.

    Bifacial solar panels: innovative and more efficient

    Bifacial solar panels have grabbed everyone’s attention in the solar PV industry — for all the right reasons.

    Bifacial PV solar panels offer what traditional panels can’t; the ability to absorb sunlight from the bottom of the panel in addition to the top. Bifacial models are unique in this way because the bottom part of the panel, the backsheet, needs to be exposed. Because of that, bifacial panels are not actually that practical for roof installations.

    But where they can be installed, which are typically on ground mounts and for utility-scale projects, they offer more efficiency than traditional panels. Below, we’ll get more into what makes them so revolutionary.

    On and off again: The tariff exemption on bifacial panels

    Solar tariffs have caused a stir in the solar industry since former President Trump applied tariffs to solar panels manufactured outside of the United States. The intent of the tariffs was to help boost U.S. production and manufacturing, and thus the sale of U.S.-made solar panels.

    This is a unique challenge though because putting tariffs on foreign panels means that there is less access to cheap solar panels. The Biden Administration kept many of the tariffs in place, but with some alterations. Importantly, bifacial panels remain exempt from the tariffs altogether, which is good news for utility-scale solar installers because they have access to globally manufactured solar panels.

    The tariff timeline is as follows:

    • In 2018, bifacial solar panels were initially included when tariffs were imposed on solar panels
    • In 2019, they were granted an exemption by the Trump Administration
    • Late that same year, the Administration attempted to reinstate the tariff but was blocked by legal action from the solar industry
    • In November 2020, the U.S. Court of International Trade decided that the Administration could reimpose the tariffs on bifacial solar panels
    • In 2022, the Biden Administration extended the tariffs for an additional 4 years but exempted bifacial panels

    What exactly are bifacial solar panels and how do they work?

    Bifacial solar panels have solar cells that absorb light from both the front side and the rear side of the panel. That means that instead of letting valuable light go to waste, the back of the panel is able to absorb it.

    Bifacial solar panels can capture UV rays that traditional panels miss, making your solar panels extra efficient.

    Sunlight can reflect from all sorts of non-reflective and reflective surfaces, even the ground. When sunlight bounces off of surfaces, say from light reflected from snow, this effect is called ‘albedo’. Bifacial solar panels can absorb this light and because of that, they provide increased efficiency and thus more energy generation than the traditional ‘monofacial’ solar panels that make up the vast majority of existing PV solar systems.

    Here’s a quick video that demonstrates the idea behind bifacial solar panels:

    How much can you save by installing solar panels on your specific home?

    Top bifacial solar panel manufacturers

    Because they are still relatively new, bifacial panels are not produced by all solar panel manufacturers. LG was one of the top bifacial solar panel manufacturers, but they recently announced that they are leaving the solar panel business.

    Stepping up in their place are the top bifacial solar panel manufacturers Q CELLS, Canadian Solar, and Jinko Solar.


    Q CELLS, one of the top-rated solar panels on SolarReviews, manufactures bifacial panels for utility-scale installations. The QPeak XL Duo has an efficiency rating of 21.4% and comes with a 12-year product warranty and a 25-year performance guarantee.

    Q CELLS are one of the most popular brands for their performance and durability.

    Canadian Solar

    Canadian Solar has combined advanced bifacial cell technology with its double glass module manufacturing expertise to develop the ultramodern BiKu bifacial panels, which are used for utility-scale installations. Their highly durable racking frames are made with anodized aluminum alloy frames and 2mm of heat strengthened glass.

    Canadian Solar claims that BiKu bifacial panels produce up to 30% additional power from the back side.


    The Tiger model LM is the bifacial solar module offered by Jinko Solar. This module comes with a 13-year product warranty, 30-year linear power warranty, and claims a.45% degradation rate.

    The unique frameless design of Jinko solar panels greatly reduces the possibility of the PID effect. a phenomenon that causes unwanted panel degradation.

    While Q CELLS, Canadian Solar, and Jinko Solar are the best known, there are many other companies that manufacture bifacial modules. Here’s a list of other prominent market players who are involved in manufacturing advanced bifacial solar technology:

    Bifacial systems clearly have a promising future in the utility solar market. But what about when it comes to residential solar, are they a good fit for homes?

    Are bifacial solar panels a good choice for homes?

    The biggest reason for this is that bifacial solar panels don’t work well when installed on rooftops. Rooftop solar panels are mounted on frames which leave just a few inches between the panel and the roof surface. This means that very little reflected sunlight reaches the rear panel face, restricting bifacial solar production.

    They require a large amount of space in order to avoid shading and to absorb the reflected light properly, making them less suitable for residential properties where real estate is limited.

    Additionally, bifacial solar panels currently come with a significant cost premium, and in residential setups they are unlikely to produce the additional solar power required to justify their higher price. This means that traditional monocrystalline or polycrystalline solar panels are still the most cost-effective solar PV option for residential installations.

    That being said, bifacial solar systems can still prove useful for certain residential applications. For instance, bifacial thin-film solar cells make sense when used for freestanding structures like carports, awnings, or pergolas, both providing partial shade and producing energy from both sides.

    A solar patio designed from bifacial solar panels to capture sunlight from both sides. Image source: Prism Solar

    Bifacial systems may also work for areas where there is no hindrance to the reflection of light. Canopies and awnings made from bifacial photovoltaics PV panels allow the reflected light to reach the back of the panels and generate additional sustainable energy for homes.

    Major solar projects using bifacial solar technology

    There are a number of large-scale solar projects built with bifacial solar modules that have been, and continue to be built.

    These bifacial installations are an indication of how this technology has been booming globally. Here are some noteworthy developments:

    • In 2021, Robins Air Force Base in Georgia completed an 870 acre solar farm to provide power to the base
    • In 2021, the Taygete Energy Project in Pecos, Texas was under construction with 344 MW of solar power; it will be one of the largest solar projects in Texas
    • In 2019, LONGi began construction on a 224 MW capacity power generation project in Mitchell County, Georgia. It will be the largest bifacialtracker power generation project in the United States

    The bifacial solar panels market will take off but not all future panels will be double-sided

    Bifacial solar panels are being hailed as solar energy’s next big thing. With a higher rate of energy production, bifacial panels seem bound to become increasingly popular in the U.S. utility solar market.

    However, they are unlikely to have much of an impact on residential solar. A bifacial solar system mounted on the roof of a home can’t really capture the reflecting rays of the sun. Add to that their premium price and frameless design, and it’s clear that bifacial solar technology will not be a fit for most homes.

    End Clamps for Frameless Solar Panel Mounting

    Product Type: Frameless Solar Panel Mounting Systems Hardware Product Model: Frameless-Solar-Panel-End-Clamps Material: Aluminium, Steel Max Wind Load : 60 m/s Max Snow Load : 1.4 KN / M 2 Application: Frameless Solar Panels Installation

    Our frameless solar panel end clamps is 60 mm / 80 mm / 100 mm … and customized length for options.

    It’s suitable for thin film solar panels from 4 mm – 10 mm thickness with our solar end clamps.

    The rubber strips inside end clamps can prevent unframed solar modules moving.

    It’s UV and Ozon resistancy ,Low electrical conductivity, recycalble, weather resistant.

    Material List for Frameless End Clamp Solar Mounting Components :

    Upper part of aluminum parts;

    Lower part of aluminum parts;

    Rubber strip in the middle of end clamp ;

    Hexagonal Socket head bolt;

    We are good manufacturer of PV mounting components, we carry more type of end clamps and mid clamp to meet different demand, and always keep enough stock of each component in warehouse, can deliver the cargo within shortest time.

    Brief Descriptions :
    Solar mounting end clamps for frameless solar panels installation
    Item type: Solar Mounting Components
    Technical Parameters :
    Installation Site : Ground or Roof frameless solar panel mounting
    Profile Material : AL 6005 – T5 ( Anodized )
    Fasten Parts : SUS 304 Steel
    Color : Silvery or according to customer requirements
    Wind Load : 60 m / s
    Snow Load : 1.4 KN/M2
    PV Modules : Frameless
    Module Orientation : Portait and Landscape
    Standards : AS/NZS 1170
    DIN 1055
    JIS C 8955 : 2011
    International Building Code IBC 2009
    California Building Code CBC 2010
    Warranty 10 years
    Designed Life Span 25 years
    Packing Details :
    Inner : Bubble baginner boxCarton
    Outer : Wooden Box, Steel Pallet, MDF, etc

    Clamps for Frameless Solar Panel Mounting super nice supplier

    I am not a business but just a home-owner trying to use some glass solar panes I sourced from a defunct solar far.

    I need about 250 of these Clamps for Frameless Solar Panel Mounting to fix a 7mm width glass frameless solar panels please, could I get a price for them as I can’t seem to find anywhere else that does these kind of things

    clamps for framelss solar panel mounting

    Thank you for your inquiry for our clamps for framelss solar panel mounting,

    Can I know details how will you mount / use these solar frameless clamps?

    bifacial, solar, panels, frameless

    I would help us more understanding your solar panel application.

    end clamps for Frameless Solar Panel Mounting

    Thank you so much for this speedy reply, it’s much appreciated.

    I have 40 75w glass frameless panels to mount to a wall, there is an example of my clumsy attempt in the image, each panel is 120cm x 60cm. I eventually want 40 panels to feed into a small off grid system to supplement our small (2K) grid tied system. Hope this helps?

    Thank you for your info,please refer to our design and BOM price.

    Cool, I want this order, I can pay vi PayPal as soon as it lands, thank you so much! Tim

    The address is in the UK, and is:

    Well received your payment, thank you.

    We will arrange the shipping as soon as possible for you.

    Thank you so much, what excellent service! I would like me to leave a review to reflect the superb support I have had:

    I recently had an excellent experience with Solar Parts Component Factory, I live in the UK and was searching for some padded solar panel brackets, which I couldn’t find anywhere and reached out to these guys. They were able to source the exact thing I needed very quickly, and I ordered and paid for them eagerly.

    I highly recommend this business to anyone, I am just an individual, not a business, and my order was (in the scheme of things) extremely small and yet I felt I got the same attention that someone ordering a very large, corporate order would get.

    Overall, excellent service and I’m super impressed by the helping communication I received from both William and Peter, thank you.

    Do you accept small order for end clamp SOLAR MOUNTING KITS ?

    Do you accept small order for SOLAR MOUNTING KITS – frameless solar panel end clamps ?

    Can our frameless bifacial PV module end clamps be customized ?

    Yes, our frameless bifacial PV module mid / end clamps can be customized.

    As good aesthetics and performance for frameless PV modules, more and more solar projects use bifiacial solar panels today especially for roof tops / carport …

    SPC also release mid and end clamps to fit frameless modules for very convenient and quick installation.

    Our frameless clamp length can be customized according to different frameless PV modules sizes ;

    Our frameless clamp color can be customized base on roof structure like : grey color in default / black color / RED / GREEN / BLUE … They can help your whole solar installation project in very good appearance.

    Our unframed clamps accessories can be customized too.

    Since clamps are fixed with aluminum rails, we can offer different A2-70 hex screw size like : M8 X 40. M8 X 30 … and different nuts bolts …

    Following are some of our alu rails which install with our frameless clamps :

    frameless bifacial PV module clamps

    Features of frameless bifacial PV module clamps :

    – 80 / 120 / 150 / 200 MM sizes available; – Silivery / Black color ; – Good quality anodized finished AL-6005-T5 Aluminum Material ; – Application : 3mm – 6mm super thin solar panels / 5 mm – 10.5 mm frameless bifacial panels;

    Welcome to customized frameless bifacial PV module MID / END clamps from

    Thin Film Laminate Solar Panel End Clamp Series

    Mounting clamps for thin film laminate solar panel Installing

    As Thin film frameless laminated solar panels are more and more popular in today’s solar energy market.

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    Base on different thickness from different PV module manufacturer range from 3 mm – 10 mm.

    bifacial, solar, panels, frameless

    We design two series of laminate clamps for solar panel installation as photo below:

    laminate solar panel mid clamps,laminate solar panel end clamps,

    One set is designed for 3 mm – 8mm thickness glass PV modules (Left one);

    The other set is designed for 5 mm – 10mm thickness glass PV modules (Right one);

    Normal color is silvery, we also can do black color as sample we sent.

    We also can offer hexagon bolt and hexagon nut ;

    We can customize for clients base on aluminum rail extrusion profile given.

    features of this laminate solar panel mid / end clamp series :

    – High quality clamps for AL6005-T5 made ; – EPDM rubber seal inside ; – Short time delivery ; – Flexible for different thickness of laminated frameless PV module ;

    details for our mid end clamps, kindly contact us by

    Factory direct mid / end clamps for thin film PV laminate solar panel installation.

    Manual to fix Glass Solar Panel End Clamps on aluminum Rails

    specification of frameless glass solar pv module end clamps mounting instruction,

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