Why Can't Flexible PV Mounting Systems Replace Fixed Ones Despite Their Many Advantages?

Flexible PV mounting systems are not as widely used as traditional fixed mounting systems; they are merely a mounting option considered for specific scenarios.
Their cost falls between that of PV carport mounting systems and traditional fixed ones.

PV power plants have a strong financial attribute, so cost is a crucial factor.
Take the "fishery-solar complementation" model as an example—if the cost of flexible mounting systems were lower than that of traditional fixed systems (fixed mounts + pile foundations) or floating mounting systems, why wouldn’t they replace the latter?

There are concerns about safety.
Although wind tunnel test reports or TUV certifications are available, it is still somewhat worrying to see PV modules fixed by steel cables hanging overhead.
Additionally, operation and maintenance (O&M) are difficult and costly.

Flexible mounting systems are also not suitable for small-scale installations.
However, they are well-suited for sewage treatment plants and "agriculture-solar complementation" projects.
For sewage treatment plants, there is a lack of space to install the footings required for traditional fixed mounts;
for agriculture-solar complementation projects, excessive columns of PV mounts are undesirable as they would interfere with farming activities.

A flexible PV mounting system is a relatively new installation method for solar PV modules. Compared with traditional rigid mounting systems, it has certain advantages but also some drawbacks.

The following are the disadvantages of flexible PV mounting systems:

1. Higher Cost: Compared with traditional rigid mounting systems, the manufacturing cost of flexible PV mounting systems is usually higher.
The materials and manufacturing processes of flexible mounts are relatively complex, leading to higher prices and thus increasing the overall cost of the PV system.

2. Durability and Stability Issues: Compared with rigid mounting systems, flexible ones may face challenges in terms of long-term durability and stability.
Due to the relatively soft nature of the materials used in flexible mounts, they may be affected by external environmental factors such as wind force and temperature changes, resulting in reduced stability and durability of the mounts.

3. Difficult Operation and Maintenance: The structure of flexible mounting systems is relatively complex. If a problem occurs, professional personnel may be required for repair and replacement.
This can increase O&M costs and maintenance time, affecting the normal operation of the PV system.

4.High Installation Requirements: The installation of flexible mounting systems is relatively complex and requires professional installation teams to carry out the construction.
Improper installation may affect the stability of the mounts and thus reduce the power generation efficiency of the PV system.

5.Limitations in Moldability: The design of flexible mounting systems is restricted by the moldability of their materials, and they may not be able to adapt to certain special installation scenarios or requirements.
In some complex terrains or building structures, flexible mounts may not be installed effectively.

Despite these disadvantages of flexible PV mounting systems, with the continuous development and improvement of technology, these shortcomings may be gradually addressed and mitigated.
In the future, flexible PV mounting systems are expected to become more durable, stable, and adaptable, providing better support for the installation and operation of PV systems.