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Solar mounting system: the core link of solar power station construction

Publish Time:2022-08-29 Sources:
The solar mounting system is the "skeleton" that supports photovoltaic modules, and its performance directly affects the operational stability, power generation efficiency and investment income of photovoltaic power plants, and plays an important role in the construction of photovoltaic power plants.

The solar mounting system is a special functional support for installing, supporting and fixing photovoltaic modules. According to whether it can follow the sun to rotate, it can be divided into fixed support and solar tracking support.

solar mounting system

At present, the main means of increasing power generation are: double glass, tracking brackets, and higher-efficiency batteries and components.
The combination of the solar tracking bracket and the double glass can reduce the angle between the module and the direct sunlight, obtain more solar radiation, achieve higher power generation, and effectively improve the power generation efficiency.

Power stations using tracking brackets need to increase a certain initial investment cost, and need to bear certain device operation risks and post-maintenance costs. In the long run, it will help the power station owners to obtain maximum economic benefits and reduce the cost of electricity.
According to CPIA data, tracking brackets will account for 12.98% of the total system cost in 2020, second only to component costs and construction and installation costs.

According to GTMResearch data, the global tracking stents accounted for about 40% in 2019. Among them, the United States is the world's largest tracking bracket market, and the penetration rate of tracking brackets for ground power stations in the United States in 2019 was 70%.
In recent years, many emerging photovoltaic markets, especially Asia, Australia and Africa, have also seen a rapid increase in the demand for tracking brackets.
In the past few years, due to the relatively high cost of tracking stents, the application of tracking stents in the Chinese market is relatively small, the global voice of domestic tracking stent brands is relatively small, and the market share occupied by enterprises is relatively low, and the use is mainly concentrated in demonstration and front-runner projects.

According to the China Photovoltaic Industry Association (CPIA), the penetration rate of tracking solar mounting systems in China was about 16% in 2019.

It is expected that with the advent of the era of photovoltaic power generation parity, the domestic market penetration rate of tracking brackets is expected to reach 30% in 2022, and will increase to more than 50% in the future.
With the reduction of cost, the solution of stability and the application of double-sided modules, GTM Research estimates that the installed capacity of global tracking brackets will be 110GW in 2025, and the market space will be close to 60 billion yuan.

From the perspective of the solar mounting system industry chain, the upstream is mainly composed of bulk metal materials such as steel and electromechanical components such as rotary reducers. The overall upstream market structure is relatively scattered and the supply is relatively sufficient.

Downstream customers are mainly photovoltaic power station developers and EPC contractors, generally large in scale and high in concentration.
In the traditional view, the solar support system is considered to be the original forging process, that is, the core is to complete the work of the overall power station solar support system through the welding and arrangement of the steel structure, so the barriers are low.
Different from fixed brackets, tracking solar brackets have four core barriers in the actual application process: 1) wind engineering and wind tunnel testing; 2) system structure design and arrangement; 3) algorithm and AI application; 4) bankability and Project endorsement.
Tracking solar support is mainly composed of three parts: structural system (rotatable support), drive system, control system (including communication control box, sensor, cloud platform, electric control box and other components).
It is necessary to design customized components and organically combine them according to the specific conditions of the project site to form a complete tracking solar mounting system solution.