Modules

Solar panels, modules, solar power plants – all these terms resonate increasingly louder in the context of cost-effective and green energy. Solar energy has become one of the main and most attractive options in the global search for sustainable and renewable energy sources. With continuous technological advancements and increasing emphasis on environmental conservation, significant progress has been made in the field of solar batteries, making them more efficient, reliable, and cost-effective. One of the key reasons why solar power plants are so popular is their accessibility not only for businesses seeking sustainable and economical energy solutions but also for residents who want to implement innovative solutions for energy supply in their homes. 

Solar modules – structure and components

Solar modules consist of a meticulous arrangement of interconnected components, all synergistically contributing to the conversion of sunlight into usable electrical energy. The main elements include photovoltaic (PV) cells, a frame, a glass casing, encapsulation, a backsheet, and a junction box. PV cells, typically made of silicon, are the primary devices responsible for converting sunlight into direct current (DC) electrical energy. These components are embedded in a glass casing, which protects them from external factors such as moisture and mechanical damage. Encapsulation, often made of ethylene-vinyl acetate (EVA), ensures the cohesion and insulation of various components. The backsheet acts as a protective layer against weather conditions and moisture, safeguarding the internal parts. Finally, the junction box is responsible for electrical connections and facilitates the transmission of generated electrical energy to external circuits.

Operation and conversion process

Solar panels operate based on the principle of the photovoltaic effect, involving the conversion of light energy into electrical energy. When sunlight hits the surface of the solar panel, PV cells absorb photons, causing the release of electrons. These electrons, in turn, generate electrical voltage across these panels, producing direct current (DC) electrical energy. Cells interconnected within the panel contribute to increasing the overall power. To convert direct current into alternating current (AC), suitable for household and industrial use, an inverter is employed. The inverter transforms electrical current into the required form for practical use.

Types of solar panels

Solar panels come in various visual designs, each tailored to specific technological requirements and aesthetic preferences. Understandably, the type of solar panel also influences the cost.

Monocrystalline Solar Modules

Monocrystalline solar modules, distinguished by a rounded, black appearance, are made from a single crystal of silicon, ensuring a uniform and visually appealing design. In the manufacturing process, cylindrical silicon ingots are cut into thin wafers, creating a distinctive appearance characterised by rounded edges and a dark, uniform surface. These modules often blend seamlessly with residential and commercial building roofs, providing aesthetic appeal that harmonises with modern architectural design.

Polycrystalline solar modules

In contrast, polycrystalline solar modules are recognised for their characteristic blue colour, resulting from numerous silicon fragments fused during the manufacturing process. The creation of these fragments results in a textured appearance with visible grain boundaries, creating a mosaic-like pattern on the module surface. While these modules may not boast the same visual uniformity as monocrystalline panels, their unique appearance adds distinctiveness to solar installations and complements various architectural styles.

Thin-film solar modules

Thin-film solar modules, known for their flexibility and versatility, differ from the typical rigid structure of crystalline modules and are offered as a lightweight and adaptable alternative. Designed using various materials, thin-film modules can be integrated into various applications, including curved surfaces and building-integrated photovoltaics (BIPV). Due to their visually unobtrusive and adaptable design, they are an ideal choice for architectural projects that prioritise aesthetic harmony and design flexibility.

Bifacial solar modules

Bifacial solar modules, designed to capture sunlight from both the front and rear sides, feature a unique construction that allows for improved energy generation. These modules, with a transparent rear layer, utilise reflected light from the ground, optimising energy production and overall module efficiency. While their visual appearance resembles traditional single-sided modules, the use of transparent materials and bidirectional light absorption makes these modules distinctive, making them an attractive choice for solar energy projects aiming to maximise energy output without compromising visual appeal.

Understanding the various visual designs and technical differences of solar modules helps consumers make informed decisions that align with their aesthetic preferences and energy needs. By evaluating the specific characteristics and adaptability of each design, consumers can confidently select solar modules that not only meet their energy requirements but also align with their architectural vision and design aspirations.

Efficiency drivers and technological advancements

Several factors, including the type of panel, geographical location, installation angle, temperature, and cleanliness, impact the efficiency of solar panels. Technological advancements have significantly contributed to improving the efficiency of solar collectors, with innovations such as bifacial solar elements, PERC (Passivated Emitter and Rear Cell) technology, and tandem solar elements enhancing energy production capabilities. Bifacial solar elements, capable of capturing light from both sides of the panel, increase overall energy output. PERC technology optimises the rear surface of the element, enabling greater light absorption and electron conversion. Tandem solar elements, incorporating multiple layers of materials with different light absorption capacities, have elevated the efficiency of solar panels to unprecedented levels. 

Solar power plants: on the roof or on the ground?

The decision to choose rooftop or ground-mounted solar panels is a crucial factor that can significantly impact the efficiency and performance of a solar energy system. Each method has clear advantages and unique aspects that need to be considered. 

Rooftop mounted solar panels:

Rooftop-mounted solar panels have long been the most popular choice for residential installations due to their space-saving design and seamless integration with existing structures. These panels are attached to specially designed mounts that are securely fastened to the roof. This assembly maximises space utilisation, especially considering limited ground area. However, to ensure optimal sunlight exposure, the installation process requires careful evaluation of roof material, orientation, and angle. Thorough consideration of factors such as shading from nearby structures or trees is essential to avoid energy production losses. Additionally, choosing this method requires careful consideration of its impact on roof integrity and potential additional maintenance requirements.

Ground-mounted solar panels:

Conversely, ground-mounted solar panels provide more flexibility in the installation process. These units are suitable for both residential and commercial purposes, especially in areas where there is sufficient land without strict space constraints. Panels are mounted on frames or racks that can be adjusted to achieve optimal tilt and orientation, maximising sunlight absorption. This assembly reduces the risk of shading and facilitates easier cleaning and maintenance of the panels, potentially extending the service life of solar collectors. Furthermore, ground-mounted systems have a scalability advantage, making them an ideal choice for larger installations and commercial solar energy projects.

Mounting differences:

The methods of securing rooftop and ground-mounted solar collectors vary significantly and require meticulous planning and execution. While rooftop panels necessitate secure fastenings capable of withstanding various weather conditions, such as rain and wind, ground-mounted systems require sturdy foundations and supports to withstand external forces. Factors like wind load, soil type, and geographical location are crucial aspects to consider when installing a ground-mounted solar power plant.

Ultimately, the choice between rooftop and ground-mounted solar panels depends on the specific requirements and limitations of the property in question. While rooftop installations offer space-saving advantages and easy integration, ground-mounted systems provide more flexibility and opportunities for larger-scale projects. Having thoroughly assessed the fixation differences and taking into account the unique characteristics of each installation method, individuals and businesses can make informed decisions that align with their energy needs and long-term sustainability goals.

How to maintain solar modules?

To ensure the long-term efficiency and durability of solar modules, it is crucial to implement comprehensive maintenance and care practices:

1.  Regular cleaning and inspection:

Regularly clean solar panels to remove dust, dirt, and debris that may reduce their efficiency. Use a soft brush or cloth with mild, non-abrasive cleaning solutions to avoid potential damage. Additionally, perform routine visual inspections to identify any signs of wear, such as cracks, that may require professional attention.

2.  Performance monitoring

Be vigilant in monitoring the performance of your solar modules. Track energy production levels and compare them with expected output to identify significant deviations and detect potential early malfunctions.

3.  Prudent landscaping

Ensure that the surrounding landscape does not cast shadows on the solar collectors, as shadows can significantly reduce their energy production. Trim nearby trees and foliage regularly to prevent shadows from obstructing the panels, maximising sunlight exposure throughout the day.

 4.  Timely and professional maintenance:

Schedule regular technical maintenance checks performed by qualified solar energy technicians to quickly identify and resolve any technical issues. Professional maintenance may include tasks such as checking electrical connections, inspecting mounting structures, and verifying the integrity of the wiring system, ensuring that your solar modules continue to operate efficiently and safely.

5.  Weatherproofing

Take necessary precautions to protect solar panels from extreme weather conditions, such as heavy snow, hail, or strong winds. Install hail protection or invest in snow removal tools to safeguard your modules during harsh weather, reduce the risk of physical damage, and ensure their longevity.

Adhering to this proactive maintenance practice can significantly extend the service life of your solar modules, ensuring optimal energy production and sustainable long-term investments. Remember that a well-maintained solar energy system not only contributes to a cleaner environment but also maximises return on investment while reducing the carbon footprint.

Our products

Bluesun solar modules represent an innovative approach to renewable energy possibilities and solutions. Live not only more cost-efficiently but also more ecologically: control energy consumption and take a big, confident step towards a sustainable future. Bluesun Solar is a leader in solar power not only in China but also globally, understanding the importance of eco-friendly living. Until 2022, Bluesun products have been exported to 185 countries and regions. The modules are continually improved, seeking solutions to efficiently generate more energy in a shorter time. Offering products on the market since 1983, Bluesun Solar's experience is one of the manufacturer's key advantages. You can contribute to a more sustainable life. 

Buy a HEX, QUAD or POLLO module and enjoy a power plant that is not only efficient, but also maintenance-free. It's a long-term investment that will quickly pay off, and the modules will serve you for many years.

The solar modules available at Pinus Solar meet the diverse needs of both residential and business purposes. We are here to assist those who want to live more sustainably effortlessly. Here, you will find not only solar modules but also all the essential equipment for the efficient and long-lasting setup of solar power systems, both for residential and commercial purposes. If you have any questions about choosing the most suitable module, you can always reach out to our customer service team. Professionals in this field will gladly provide advice and help you select the best products that meet your energy and design needs.