All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(5352 products available)
PV (photovoltaic) module frames are manufactured in several types, each with advantages based on the intended application.
Aluminum Frames
Most solar panels feature aluminum frames as they are light, though robust. Aluminum is corrosion-resistant, ensuring longevity even when exposed to elemental elements. It can also be easily shaped into the required dimensions, hence allowing for the standardization of solar panels. Frames made of aluminum provide extra protection and make it easier to install the solar panels, as they are compatible with mounting systems.
No Frame (Frameless PV Modules)
Frameless solar panels do not have an aluminum frame, normally used to mount the panel. These types of panels are very much in demand because they are sleek and modern and often used in building-integrated photovoltaics (BIPV). The lack of a frame makes these panels quite light and, therefore, easy to install. Moreover, they have a lower profile, which is less sensitive to strong winds and storms. While they may not be as strong as framed modules, many are built with toughened glass to ensure durability.
Steel Frames
Frames made of steel offer a strong and, at times, more affordable alternative to aluminum. They are normally coated or galvanized to mitigate rust or corrosion. Steel frames often have premium strength and are ideal for situations where intense wind or extreme weather is a possibility. Though steel is less flexible with respect to mounting options compared to aluminum, it gives support that enables durability.
Plastic or Polymer Frames
Plastic frames provide a lightweight, corrosion-resistant solution for solar panels. They are generally used in applications where the light weight of the panel is essential, such as on some roofs. Although not so sturdy as metal frames, plastic is an affordable option that can be easily molded into different designs. Polycarbonate or other durable plastics are used to manufacture frames that can withstand harsh weather.
Hybrid Frames
Plastic and metal frame combinations use hybrid frames. Frequently, these frames have a core of plastic that reduces the weight and a metal exterior, often aluminum, to increase strength and rigidity. This type of frame combines the advantages of metal and plastic: corrosion resistance and the stability of the latter and the former's strength. Hybrid frames are commonly encountered in premium solar panels that require optimal performance and durability.
Durability and material composition are some of the main considerations when installing solar panels in any environment. Frames made of PV modules have the responsibility of protecting the solar cells inside and also of ensuring that the module can weather extreme elements.
Materials Used in PV Module Frames
As noted above, aluminum is the most common material used for PV module frames. The aluminum frame is both strong and light, which does not easily corrode and helps make the module weather-tight. It is a standard practice to anodize aluminum frames to enhance protection against corrosion. Aluminum frames also have an advantage over mounting, as the frame has a number of inserts and holes for easy mounting on rooftops or racks.
The strength and durability of steel frames make them an option. They are normally galvanized or powder coated to reduce rust. These frames are common in large installations that require extra strength due to possible wind or weather. Even while the steel frame might be heavier and sway more than the aluminum frame, it provides strong support.
Plastic or polymer frames are corrosion-resistant and in environments where chemical corrosion is a possibility, for example, coastal regions or near chemical plants. Frames made of polymer are light, but not as firm as metal frames. They are also cheaper to manufacture and therefore suitable for projects on a budget. Plastic frames are made from materials such as polycarbonate; these frames are made intense UV exposure resistant.
Hybrid frames aim to take the metal's strength and the plastic's light weight resistance. Generally, polycarbonate and aluminum frames make this combination light, flexible, and oxidation- and corrosion-resistant. These types of frames are most commonly used in situations where ideal performance and light weight are required.
Weather Resistance
Weather resistance is one of the main tasks of module frame durability. PV modules are produced in such a way that they can survive rainfall, strong winds, hail, and extreme temperatures. The anodization of aluminum frames provides weather elements with exceptional resistance, while plastic frames provide comparable UV protection. Steel frames are weather-resistant due to their galvanizing.
Mechanical Strength
The PV module frame's mechanical strength has the role of protecting the solar cells inside from any possible damage during transport and installation and when external pressure is applied. A powerful frame supports the module and guarantees that it will not warp or break in harsh weather conditions. Wind and snow load require support, which is why a robust frame is critical in areas with either of the two conditions. Steel frames are especially sturdy and ideal for these situations, while aluminum frames offer a perfect combination of strength and lightweight.
Corrosion Resistance
The frames of PV modules must be immune to rust and corrosion for longevity, especially in coastal or humid regions. Aluminum frames are highly resistant to corrosion due to their anodized surface. Steel frames are galvanized or powder-coated to give them corrosion resistance. Chemical exposure and UV light also resist plastic frames inherently.
Various commercial sectors and large-scale renewable energy projects use PV module frames to support solar power systems.
Utility-Scale Solar Farms
Large solar farms are built with heavy-duty aluminum or steel frames to endure vast amounts of snow and wind. PV modules in utility-scale solar farms produce bulk electricity for the grid and, thus, robust and long-lasting frames that support many PV frames.
Commercial Rooftops
PV module frames are mounted on industrial and commercial rooftops to produce on-site electricity. Strong aluminum frames are often the most suitable for these applications, where frames require withstanding high winds. Commercial rooftops power factories, warehouses, and businesses, reducing their electricity costs.
Agrivoltaics (Dual Use of Land)
Agrivoltaics combine agriculture with solar power by manufacturing PV module frames that support dual land usage. Aluminum and steel frames are appropriate for agrivoltaic installations, where panels treat crops production or livestock for the need for robust mounting systems. The system produces food and energy, increasing efficiency in land use.
Floating Solar Arrays
Frames made of PV modules are used in floating solar power systems built on water surfaces. Specially designed frames, like aluminum, hold modules firmly on buoyant structures. The durability of frames ensures that pond, lake, or reservoir solar panels withstand waves, water, and weather. These systems provide energy where land is limited and power water areas.
Building-Integrated Photovoltaics (BIPV)
Frames for modules are also incorporated into building elements such as windows and facades. Designed in a way, they replace conventional building materials while generating electricity. Frames for BIPV are generally sleek plastic or low-profile aluminum to make them aesthetically appealing for modern architecture.
The following are the factors to consider when choosing a PV module frame.
Material
PV module frames are commonly employed in materials such as aluminum, steel, and polymers. Aluminum is highly corrosion-resistant, lightweight, and adaptable; thus, it is most widely employed. Steel, which is stronger and less expensive, is generally employed on the inside since it is coated to avoid rust. Plastic frames, such as polycarbonate, are lighter and ideal for coastal or chemically intense locations.
Corrosion Resistance
Corrosion resistance is of paramount concern in coastal or high-humid regions. Aluminum frames are corrosion-resistant, while galvanized or powder-coated steel frames offer good protection. Coastal areas have plastic frames resistant to chemical threats.
Mechanical Strength
The frame must be so strong that it will be able to survive wind loads, snow, and any other type of physical abuse. Strong frames provide support and ensure no bowing or breakage occurs. Steel frames are the strongest; they are best for extreme weather situations, while aluminum frames provide a good balance of strength and lightweight properties.
Durability
PV module frames must withstand UV radiation, wind, rain, and snow for 20 years or more. Durable materials like anodized aluminum and galvanized steel have superior durability. Plastic frames, while not as sturdy, can resist UV and chemical degradation.
Cost
The price of the chosen material will affect the total system cost. Aluminum frames are more expensive than steel, but they provide excellent corrosion resistance. Plastic frame costs are lower, but their application is limited. Finding a frame that balances material and frame costs is critical to reducing the overall costs of the solar panel system.
Most PV frames are made from aluminum due to its resistance to corrosion, light weight, and strength.
When choosing a PV unit frame, factors such as the material used for the frame, mechanical strength, and the cost of the frame must be considered.
Aluminum frames have high resistance to corrosion and UV, making them highly durable.
Frameless PV modules are there. They are made sleek and modern and often used in building-integrated photovoltaics (BIPV).
Plastic frames help reduce the weight of PV modules.
