Policies Drive Industrial Upgrades, Solid-State Transformer (SST) Commercialization Accelerates

Policies Drive Industrial Upgrades, Solid-State Transformer (SST) Commercialization Accelerates

Amid the rapid development of new power systems and AI data centers, market demand for high-efficiency, smart, and controllable power equipment continues to rise. In March 2026, eight ministries and commissions including the Ministry of Industry and Information Technology (MIIT) jointly issued the *High-Quality Development Implementation Plan for Energy-Saving Equipment (2026–2028)*, which explicitly includes large-capacity solid-state transformers (SSTs) as a promoted application. As a professional R&D and manufacturing enterprise of distribution transformers and a key player in the transformer industry, the company is closely monitoring this technological transformation. It has already initiated relevant technology reserves and product pre-research, aiming to provide customers with future-oriented, high-efficiency power supply solutions.

I. Technological Innovation: Upgrading from Traditional Line-Frequency to High-Frequency Intelligence

Solid-state transformers (SSTs) combine power electronics technology with high-frequency transformers, breaking away from the traditional line-frequency electromagnetic induction approach. Compared with conventional iron-core transformers, SSTs offer significant advantages such as smaller size, higher efficiency, and flexible regulation. They enable efficient AC/DC power conversion and precise control, making them well-suited for new energy grid integration, smart grids, data center power supply, and other emerging applications.

Leveraging wide-bandgap semiconductor devices such as silicon carbide (SiC) and gallium nitride (GaN), SSTs achieve higher operating frequencies and lower losses, greatly reducing equipment size and increasing power density. Moreover, they can directly output high-voltage DC, effectively meeting the demand for efficient power supply systems in large data centers and AI computing centers, further enhancing power reliability and energy efficiency.

II. Significant Energy Efficiency Gains and Expanding Application Scenarios

In terms of energy performance, SSTs feature a simplified power supply chain with low conversion losses, resulting in significantly higher overall operating efficiency than conventional power supply solutions. For scenarios with concentrated power loads such as data centers and industrial parks, this efficiency improvement directly translates into substantial energy savings and operational cost reductions, delivering notable economic and social benefits.

Additionally, SSTs offer grid adaptability including fast response to load changes, harmonic suppression, and support for distributed energy resource integration. They are core equipment for smart grids, microgrids, and new distribution systems. Their application scenarios are extending from traditional power grids to emerging fields such as data centers, EV charging, and industrial power supply, indicating vast market potential.

III. Maturing Industrial Chain and Accelerating Commercialization

The SST industrial chain has now formed a clear layered structure: upstream, breakthroughs in core components and devices are being achieved with declining costs; midstream, system integration and engineering application capabilities are continuously improving, with multiple large-capacity products entering testing and demonstration phases. As the localization of core components advances and scale applications grow, the overall cost of SSTs continues to fall while reliability steadily improves, laying a solid foundation for commercial promotion.

The company is actively tracking SST technology development, maintaining close communication with industry chain partners and research institutions. It plans to introduce high-cost-performance SST products tailored to domestic market demands at an appropriate time after completing sufficient reliability verification.

IV. Outlook: Technology Maturing, Broad Prospects

Solid-state transformers are widely regarded as a key direction for future high-efficiency power supply systems. Although challenges remain in terms of overall cost and long-term reliability validation, the technology roadmap is clear, policy support is explicit, and market demand is urgent – industrialization has entered a critical acceleration phase.

Going forward, as technology matures and application scenarios expand, SSTs will play an increasingly important role in new power systems, digital infrastructure, green energy savings, and other fields. As a professional R&D and manufacturing enterprise of distribution transformers, the company will continue to invest in R&D, keep pace with industry developments, and drive the transformation of transformer products toward high efficiency, intelligence, and low carbon, delivering greater value to customers.