
Different types of balconies have their own structural characteristics, which directly determine the installation method and fixing form of the solar mounting system. Common balcony types include cantilever, semi-enclosed, enclosed, and floor-standing types. The load-bearing capacity of cantilever balconies mainly depends on the wall and beam structure. When installing the bracket, it is necessary to focus on the weight distribution and wind load. Enclosed or semi-enclosed balconies may have walls as auxiliary support points, which is convenient for setting up wall-mounted brackets. Floor-standing balconies are relatively stable and can accommodate larger brackets or even small tracking systems.
Balcony Type |
Description |
Adaptability to Bracket Installation |
Cantilevered |
No lower support, extended by beams only |
Requires lightweight brackets to avoid overload or unbalanced load |
Enclosed |
Surrounded by three walls |
Can use wall-mounted or floor-supported brackets |
Semi-enclosed |
Partially enclosed, relatively stable |
Suitable for mixed support with columns and walls |
Ground-supported |
Supported from the ground, stable structure |
Flexible bracket options, suitable for larger systems |
Balcony solar brackets can be divided into tilted, vertical, adjustable angle and other structures. Their compatibility needs to be selected in combination with balcony space, height restrictions and orientation. If the balcony is severely blocked, a vertical bracket can be selected to increase the panel angle; if the space is narrow, a wall-mounted bracket needs to be customized to save floor space. Some brackets also provide fine-tuning mechanisms, which can adjust the angle according to the season or light changes to improve photovoltaic efficiency.
The bracket materials are mainly aluminum alloy, stainless steel, and hot-dip galvanized steel. The aluminum alloy structure is light and suitable for cantilever balconies that are sensitive to loads; stainless steel and hot-dip galvanized steel are more suitable for balcony structures with strong bearing capacity. Surface anti-corrosion treatment is very important for open-air balcony systems, which can extend the service life of the system and reduce the risk of damage to the wall structure.
Material Type |
Key Features |
Suitable Balcony Type |
Aluminum Alloy |
Lightweight, corrosion-resistant, easy to install |
Cantilevered, enclosed, small-scale systems |
Stainless Steel |
High strength, strong weather resistance |
Ground-supported, semi-enclosed |
Hot-dip Galvanized Steel |
Moderate cost, stable structure |
Ground-supported, large balconies |
The installation methods of balcony solar brackets include expansion bolts, chemical anchoring, clamp fixing, embedded parts welding, etc. For existing residences, non-destructive clamp fixing methods are more often used to avoid damaging the balcony structure. If a new building is built, anchor points can be reserved during structural design to improve the bearing capacity and safety of the overall mounting system. The flexible combination of different installation methods helps to adapt to various building structure differences.
Due to the limited load-bearing capacity of the balcony structure itself, especially in cantilever structures, accurate structural load analysis is required for the installation of solar brackets. Static loads (component weight, bracket weight), wind loads, snow loads, etc. should all be included in the assessment scope. Some professional manufacturers will provide corresponding load-bearing test reports and installation guidance plans when designing balcony mounting systems.
Load Type |
Description |
Assessment Focus |
Static Load |
Weight of solar panels and brackets |
Whether it exceeds the balcony’s load capacity |
Wind Load |
Lateral pressure from strong winds on system |
Balcony railing height, wind-facing area |
Snow Load |
Snow accumulation affecting structural burden |
Panel tilt angle and snow-shedding capability |
Some residential communities and apartment buildings have successfully installed solar mounting systems on different balcony structures. For example, a wall-mounted aluminum alloy bracket is used on a south-facing balcony, and each household can realize a 200W small photovoltaic device for LED lighting; in another independent balcony, a column-type adjustable angle bracket installation component is used to provide power support for the energy storage system. Actual applications show that through appropriate structural selection and installation design, the balcony system can be adapted to most common balcony types.
The balcony solar mounting system is flexible in design and materials, installation methods, and load-bearing control, making it have a strong balcony structure adaptability. Whether it is a cantilever balcony, a floor-standing or enclosed balcony, as long as it is reasonably planned in combination with specific conditions, most types of balconies can be used as a usable platform for distributed photovoltaic systems. In the process of promoting green energy, the use of balcony space will become one of the important technical development directions.