The PV connector market is steadily expanding along with the growth of global PV installed capacity. Industry data shows that the global market size was approximately 6.19 billion yuan in 2024, and it is expected to grow to nearly 15.13 billion yuan by 2031, with a compound annual growth rate (CAGR) of about 13.7%. Meanwhile, the entire industry is undergoing a transformation from extensive 'quantity' expansion to refined 'quality' competition. The calls for industry self-discipline and opposition to 'involutionary' vicious competition are growing louder, which forces all links including connectors to create value through technological innovation and quality improvement rather than simple price competition. This lays a healthy industrial foundation for the development of connector technology towards high-end and professionalization.

Against this backdrop, the development of PV connectors presents the following key trends:

1. Performance Upgrade: Bearing Higher Power, Pursuing Lower Loss
With the iteration of PV module technology from P-type to N-type (such as TOPCon, HJT), the power and current output capabilities of modules continue to rise. This directly drives connectors to evolve towards higher current and voltage bearing capacities. Traditional MC4 connectors (with a rated current of usually 20-30A) are facing challenges, and a new generation of connectors is developing towards a rated current of 40A, 50A or even higher. At the same time, to achieve higher system efficiency, the requirements for contact resistance of connectors are more stringent. By optimizing contact materials (such as high-conductivity plating), improving crimping processes and structural design, efforts are made to minimize power transmission loss to the limit.

2. Form Innovation: Miniaturization, Modularization and Easy Installation
To adapt to the limited wiring space on the back of high-efficiency modules (such as those adopting shingled and multi-split technologies) and reduce shading on backside power generation, miniaturized design of connectors has become a clear trend. A more compact shape and lower profile height have become the focus of product design.
In addition, the trend of modularization and prefabrication is prominent. To achieve faster power station deployment speed and higher installation consistency, pre-assembled PV cables with connectors and plug-and-play modular wiring solutions are becoming increasingly popular. The plugging feel, locking reliability and anti-misplug design of the connectors themselves are also continuously optimized to reduce the complexity and failure rate of on-site installation.

3. Intelligent Empowerment: From Passive Connection to Active Management
Intelligence is the most disruptive development trend of PV connectors. Future intelligent connectors will no longer be simple electrical interfaces, but 'intelligent nodes' integrating microprocessors, sensors and communication modules. Its potential functions include:

• Real-time Monitoring: Online monitoring of temperature, current and voltage at the connection point. Abnormal temperature rise is an early sign of poor contact or failure, and intelligent monitoring can achieve accurate early warning to prevent fires.

• Fault Location and Shutdown: When the system needs maintenance or an emergency occurs, it can support rapid shutdown and cooperate with module-level power electronics (MLPE) to improve system safety.

• Data Upload: Upload operational data to the monitoring platform via power line carrier or wireless methods, providing granular data support for digital operation and maintenance and performance analysis of power stations. At present, relevant industry policies such as the "Action Plan for the Innovative Development of the Intelligent PV Industry (2021-2025)" have clearly encouraged the research and development of intelligent junction boxes and auxiliary materials, providing policy support for this trend.

4. Professional Deepening: Customized Solutions for Segmented Scenarios
PV application scenarios are becoming increasingly diversified, and different scenarios put forward differentiated requirements for connectors:

• Large-scale ground-mounted power stations: More attention is paid to long-term reliability, weather resistance and cost optimization under large-scale installation.

• Distributed rooftops (residential/commercial & industrial): Higher requirements for safety (such as rapid shutdown needs), aesthetics and easy installation.

• Extreme environments such as offshore PV and plateau high-UV areas: Connectors are required to have stronger corrosion resistance, salt spray resistance, high and low temperature impact resistance and anti-aging capabilities.
  Therefore, the model of 'one product for all scenarios' is changing, and customized and professional connector solutions for different application scenarios will become mainstream.

From the perspective of the industrial chain, leading connector enterprises are consolidating their advantages through vertical integration and technological innovation. They usually have in-depth binding with top global module manufacturers and conduct joint R&D to meet the needs of next-generation products.
The market competitive landscape presents characteristics of centralization and internationalization. The global market is dominated by a few leading enterprises, and at the same time, Chinese manufacturers are continuously enhancing their global influence with complete supply chains, rapid technical response and cost advantages. For example, some leading Chinese enterprises have not only laid out multiple production bases in China, but also built overseas factories in Vietnam, the United States and other places to achieve global capacity layout, so as to be close to the market and respond to international trade barriers.

Looking to the future, the development of PV connectors still faces challenges: how to more effectively manage heat under high power density, how to balance the functional value-added brought by intelligence and cost increase, and how to establish more unified and strict industry standards to ensure the safety and performance benchmarks of products from different manufacturers.
However, the opportunities are broader. As global PV installed capacity moves towards the terawatt level, and with the integration of PV with multiple scenarios such as energy storage and hydrogen production, connectors, as key interfaces for energy flow, will play an increasingly important role. They will continue to evolve along the path of high performance, high reliability and high intelligence, transforming from a passive 'connector' to an 'intelligent unit' that actively participates in system management and optimization, providing solid support for building a safe, efficient and intelligent new photovoltaic power generation system.