Exploring double glass solar panels: A Technological Breakthrough in Solar Energy

· PV Technology News


  • What exactly is a double glass solar panel?
  • What does a double glass solar panel look like technically?
  • How do Double Glass solar panel work?
  • When compared to glass-foil modules, how much more expensive are double glass solar panels?
  • Pros of Double Glass solar panels
  • Cons of Double Glass solar panels
  • Applications for solar panels with double glass
  • Applications of Double Glass solar panels
double glass solar panel

What exactly is a double glass solar panel?

A solar module that is covered in glass on both the front and rear sides is referred to as a double-glass solar panel, also known as a glass-glass solar panel. Compared to traditional modules, this design offers improved endurance and enhanced protection for the solar cells. While the back glass offers additional support, the front glass protects the cells from harm and allows for maximum sunlight transmission. The durable design of the double-glass module provides enduring performance, making it a great option for solar energy applications.

double glass solar panel

What does a double glass solar panel look like technically?

A double glass solar panel's technological construction consists of the following elements layered one on top of the other:

Front Glass: The front glass layer, which acts as the module's top-most protective cover, is there at first. Durability and transparency are provided by the tempered or toughened glass used in its construction.

EVA/POE Encapsulant: Behind the front glass is an encapsulant layer constructed of polyolefin elastomer (POE) or ethylene-vinyl acetate (EVA). The solar cells are enclosed by this layer, which also serves as an adhesive, securing their attachment to the glass and acting as electrical insulation.

Solar cells: Commonly referred to as photovoltaic cells, Solar cells are the primary element in solar energy systems that transform sunlight into electricity. Typically, materials based on silicon, such as monocrystalline or polycrystalline silicon, are used to create them.

EVA/POE Encapsulant: There is an additional layer of EVA or POE encapsulant underneath the solar cells. This layer contributes to the longevity and effectiveness of the solar cells by shielding them from moisture and the environment.

Back Glass: The module's back side is where the back glass layer is located. Similar to the front glass, it offers security and toughness. The back glass, which is commonly constructed of tempered glass, completes the module's encapsulation.

A sandwich configuration of "glass-EVA/POE-solar cells-EVA/POE-glass" makes up the overall structure of a double glass solar panel. Compared to other module designs, the use of glass on the front and rear sides offers the solar cells improved protection. This design increases the module's resilience to mechanical stress, environmental variables, and potential deterioration, improving durability and lengthening lifespan.

Double Glass solar panels

How do Double Glass solar panel work?

Double glass modules harness the energy of the sun and transform it into useful electrical energy by performing the following steps:

1. Sunlight Absorption: The double glass module's front glass layer lets sunlight enter and reach the solar cells. The fundamental building blocks of light energy are photons, which are what make up sunlight.

2. Photon Conversion: When sunlight strikes a solar cell's surface, it interacts with the silicon-based semiconductor material. The material's electrons become stimulated and loosen their atomic connections as a result of the photons' energy transfer to it.

3. Electron Flow: Within the solar cells, the liberated electrons induce a flow of electrical current. The module's metal conductive layers, which gather the electrons and direct them along a predetermined path, control this flow.

4. Electrical Current Generation: The top and bottom layers of the solar cells' conducting metal contacts catch the moving electrons. Direct current (DC) electricity is produced within the module as a result.

5. Module Output: Within the module, interconnecting wires gather and combine the DC electricity that has been generated. The overall power output is increased by connecting several solar cells to create a larger array. The module normally produces direct current as its electrical output.

6. Conversion to AC Power (Optional): To connect to the grid and power electrical devices in various applications, the DC electricity generated by the double glass module must be converted to alternating current (AC). This is accomplished by utilizing an inverter, which transforms DC electricity into AC power suitable for use in conventional electrical systems.

7. Power Distribution and Usage: The module's AC electricity can be used right away to power a variety of electrical devices, or it can be put into the grid. In systems that are connected to the grid, surplus electricity can be returned to the grid, earning credits or lowering energy expenses.

In general, the way double glass solar panels function is by absorbing solar energy, transforming it into electrical energy via the photoelectric effect, and producing useful electricity for diverse applications. They support the sustainability of renewable energy systems by enabling dependable performance and better protection.

When compared to glass-foil modules, how much more expensive are double glass solar panels?

When compared to glass-foil modules, how much more expensive are double glass solar panels?

Due to the fact that double glass modules use glass on both sides, their costs are often higher than those of glass-foil modules. When glass is used on both sides of solar panels, the average cost of PV glass per square meter, which is $6, doubles. However, it's crucial to take into account the total module cost, which also takes into account other elements including encapsulant materials, solar cells, manufacturing procedures, and other parts.

Many double glass solar panels have the benefit of being frameless, which can help reduce costs. The lack of a typical frame lowers material and production costs, which could somewhat offset the increased costs incurred by the additional glass layer.

Double glass modules have a higher initial cost, but it's important to think about the long-term advantages they provide. Since these modules frequently have longer useful lives and greater efficiency, the amount of electricity produced over time increases. As a result, the typical cost per kilowatt-hour (kWh) produced may drop considerably, enhancing the solar system's overall profitability.

Pros of Double Glass solar panels

Pros of Double Glass solar panels

Glass-glass modules, commonly referred to as double-glass solar panels, have a number of benefits that are helping them gain market share. These consist of:

Improved Durability: Double glass solar panels, which have glass on both sides, offer excellent protection and have a long service life, frequently lasting 30 years or more. They provide enhanced moisture resistance and enhanced fire safety.

Increased Resistance: The multiple glass layers equally disperse stresses, lowering the possibility of microcracks and improving the module's overall durability. Higher reliability and less performance degradation follow from this.

Improved Safety: Shorter distances between buildings are possible thanks to double glass solar panels' greater fire protection compared to traditional glass-foil modules. This maximizes the use of roof space and maximizes the possibilities for solar energy.

Higher Yields: Due to improved heat dissipation and thinner front glass layers, double glass solar panels demonstrate higher efficiency. They are more effective at converting sunlight into electricity thanks to these features, which enable improved energy output.

Longer Peak Performance: Compared to glass-foil modules, silicon cell deterioration is slower in double glass solar panels. As a result, the performance is maintained for a longer time and the module produces more electricity overall.

Cost-effectiveness and Environmental Benefits:  Double glass solar panels frequently offer improved cost-effectiveness due to its long lifespan and higher efficiency, which together enhance the amount of electricity produced. As a result, greenhouse gas emissions are decreased. They can also be recycled more readily than glass-foil panels.

Cons of Double Glass solar panels

Despite all of its benefits, double glass solar panels have some disadvantages, such as:

Greater Weight: Due to their larger weight compared to standard modules with a foil back, double glass solar panels can be more difficult to install. But over time, improvements have been made to make them lighter.

Complex Installation: The installation of some double-glass solar panel models could be complicated and time-consuming due to the need for additional hooks. The installation process has been streamlined for recent models, though.

Higher Price: Double glass solar panels are comparatively more expensive than regular panels due to the usage of thin-film glass panes. The price differential has, however, significantly shrunk as a result of technical developments.

Delamination Risk:​ Double glass solar panels run the risk of delaminating if they are not made or bonded properly. To reduce this danger, it is essential to select high-quality modules from reputed brands with solid warranties and background in manufacturing.

Applications for solar panels with double glass

The solar energy sector uses double glass solar panels, commonly referred to as glass-glass modules, for a variety of purposes. Here are a few typical examples:

Residential Rooftop System solar panels

Residential Rooftop Systems: Double glass solar panels are frequently utilized in residential solar installations. They are perfect for rooftop installations because of their greater durability and prolonged service life.

Commercial and Industrial Projects   solar panels

Commercial and Industrial Projects: Due to their durability and increased energy yield, double glass modules are appropriate for commercial and industrial solar projects. They can assist lower energy costs while supplying huge buildings with the electricity they need.

Solar Farms: Utility-scale solar farms, where several panels are deployed to produce electricity on a bigger scale, use double glass solar panels. Their increased toughness and effectiveness help the solar farm function as a whole.

Building-Integrated Photovoltaics (BIPV) soalr panel

Building-Integrated Photovoltaics (BIPV): Glass-glass modules can be incorporated into architectural elements like windows, facades, or skylights to provide renewable energy. They provide design flexibility and aid in creating buildings that use less energy.

Off-Grid Systems: Double glass modules are employed in off-grid applications to provide electricity in isolated locations that are cut off from the electrical grid. They provide dependable and sustainable energy solutions for off-grid residential, telecommunications, or irrigation systems.

Floating Solar systems solar panel

Floating Solar systems: Floating solar systems on bodies of water, such as lakes or reservoirs, are increasingly using double-glass solar panels. They are appropriate for these particular applications due to their waterproof design and longevity.

Solar Canopies and Shade Structures: Double glass modules can be incorporated into solar canopies and shade structures, offering both protection from the elements and the production of renewable energy. They are frequently put in place in parking lots, open spaces, or outdoor entertainment places.

Environmental and Architectural Projects: Glass-glass modules are used in environmental and architectural projects where sustainability and beauty are important considerations. They can be utilized in eco-friendly constructions, green projects, or creative installations that support renewable energy.

Double glass solar panels can be used in a variety of settings, including commercial solar farms, residential rooftops, and cutting-edge architectural projects. They are an excellent option for many solar energy projects because of their strength, efficiency, and design flexibility.

Since 2008, Maysun Solar has specialized in the production of a variety of photovoltaic modules, and we provide you with a comprehensive selection of double-glazed modules to choose from.

Pick Maysun Solar to suit your needs for high-quality solar panels, and get in touch with us to build a sustainable future with us!

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