Full Black Solar Panels：Are They Better?

Why are Some Solar Panels Full Black?

The reason why full black solar panels have such a dark appearance is due to a variety of design and manufacturing techniques designed to minimise visible reflections and bright colours. Here are some of the reasons why:

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Monocrystalline Cells: Polycrystalline silicon cells show mid-blue, monocrystalline silicon cells are dark blue, appearing almost black from a distance, so full black solar panels are usually selected monocrystalline cells, which makes the solar panels run more stably, and the overall appearance is more uniform and darker in colour.

Black Frame: To attain the desired full black aesthetic of solar panels, the frame is typically constructed using black anodized aluminium frame. This choice of black aluminum for the frame plays a significant role in creating the sleek and uniform all-black look of the solar panels.

Full Black Backsheet: The backsheet is the underside of the panel, and full black solar panels typically have a black backsheet. Backsheets for all-black solar panels are usually chosen from black materials such as black EVA (ethylene vinyl acetate copolymer) or other black backsheet materials. This helps to further reduce visible reflections.

Glass: The front glass of solar panels is generally maintained high light transmission as much as possible so that the cells can absorb more light and convert it into electricity. In the case of a glass-glass solar panel, it also has glass on the back. The back glass has two thicknesses, 2.0mm and 1.6mm, and is generally made of semi-tempered low-iron ultra-white photovoltaic glass with grid (black grid or white grid) or without grid according to the demand, which has incomparable advantages over the backsheet, and is gaining more and more recognition and share in the market. In glass-glass full black solar panels, the glass on the back (backglass) is usually transparent, which means that the sink bars and other connecting parts on the back may be visible in some cases. In order to maintain an overall full black appearance and to obscure these components, the manufacturer may add a black grid structure to the back glass. The purpose of this is to give the back of the solar panel a perfect black colour and to protect the busbar.

Encapsulation: Solar cells are encapsulated between the front glass and the back sheet with the help of ethylene-vinyl acetate (EVA) and a white Tedlar sheet for insulation. Full black solar panels usually use black Tedlar sheets or other alternative black encapsulation materials to maintain an aesthetically pleasing and consistent full black appearance.

Busbars and Contacts: In full black solar panels, the interconnecting wires or busbars between solar cells are also made from black materials or treated to appear black. This can be achieved by using black conductive adhesives or other black materials. Busbars and contacts on the front surface of the cells are designed to be black or dark in color to minimize visibility.

Silicone: Silicone is commonly used in the manufacturing of solar panels, especially glass-glass solar panels, to encapsulate and hold the solar cells in place, as well as to provide additional protection for the panels. In full black solar panel designs, the silicone is often dyed or selected to be black in order to maintain the overall black appearance. When attaching the solar panel’s frame to the glass, black silicone is employed to ensure the entire panel maintains a consistent and seamless color appearance. This use of black silicone not only enhances the panel’s overall aesthetics but also contributes to its cohesive, uniform look. The picture below shows what black silicone looks like on a full black solar panel.

CS6R-390MS-HL is part of the HiKu6 (All-Black) Series — one of the most popular made by Canadian Solar. These panels employ cutting-edge technologies to achieve superior efficiency and reliability. This panel takes full advantage of the Passivated Emitter Rear Contact (PERC) technology that allows it to capture up to 12% more energy. All thanks to a reflective layer on the back. This design maximizes the number of photons absorbed by solar cells.

To further boost the performance, Canadian Solar employs half-cut cell technology. Each of the panel’s 108 cells is only half the size of a traditional solar cell. This grants CS6R-390MS-HL lower resistive losses and better shade tolerance. As a result, the panel achieves an impressive efficiency of 20%. The innovations made the appearance of the panel as impressive as the specs. A mere 1.38" thick, this model is completely black with a smooth surface. This beauty doesn’t compromise the quality or reliability of the panel. Canadian Solar provides an industry-leading 25-year performance warranty and a 25-year product warranty.

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• 390 W power output
• 108 half-cut PERC cells
• 20% efficiency
• 1000/1500 V DC maximum system voltage
• T6, MC4, MC4-EVO2 or MC4-EVO2A connectors
• 25-year product and 25-year performance warranties

High productivity thanks to the most recent developments

This Canadian Solar panel produces 390 W of power at 20 percent efficiency. High levels of energy output are reached by utilizing the most recent innovations in the solar sector. A more efficient panel produces more per square foot and pays for itself sooner.

Improved performance at hot temperatures

A high temperature coefficient translates to more energy as the temperature rises. Every 1.8°F increase over 77°F reduces the efficiency of your panel by just -0.34%.

High quality standards

Canadian Solar strict manufacturing standards include multiple tests to provide extreme quality assurance. The facilities are highly automated, allowing the company to maintain high standards and keep the level of warranty claims very low.

Low degradation for increased longevity

In the first year of service, these panels will lose no more than 2% of their power output. The average yearly power drop from the second to the 25th year will be no more than 0.55%. After 25 years, the modules will retain more than 84.8% of their initial output.

A panel that can handle hail, wind and snow

The 1.38" frame built of anodized aluminum and a layer of protective tempered glass make this module weather-resistant. The front side of the modules can withstand a 5400 Pa load, whereas the back side can withstand a 2400 Pa load.

Outstanding all-black design

The panel has a sleek, all-black style that complements any roof beautifully. Canadian Solar uses unique treatment and selection procedures to guarantee optimum cell color. The cells are connected by thinner wires, and from a distance, the surface of the modules seems seamless and smooth.

Size

67.8" x 44.6" x 1.38"

Weight

49.4 lb

Contact us to discuss your requirements of 455w Solar Panel. Our experienced sales team can help you identify the options that best suit your needs.