While traditional transformer exports are booming, next-generation solid-state transformer technology is rapidly emerging. Solid-state transformers, also known as power electronic transformers, are hailed as the "energy routers" of new power systems.

Multiple breakthroughs have been achieved in domestic technology. On March 25, 2026, Xinfengguang Electronic Technology Co., Ltd. successfully launched its next-generation solid-state transformer. The product is designed for 10kV input and 800V DC output with a power rating of 2500kW, featuring core advantages including high power density, low loss, and high functional integration. Xinfengguang has been involved in related technology research and development since participating in the National 863 Program in 2006, mastering the entire chain of core technologies including topology design, magnetic circuit optimization, manufacturing processes, and system integration.

On March 28, 2026, Delta Electronics, Hanteng Technology, and Loongson Technology jointly released a containerized DC mobile intelligent computing center powered by solid-state transformers. The solution uses Delta's solid-state transformer as the core energy backbone, deeply integrates the domestic Loongson 3C6000 CPU and AI acceleration cards, achieves over 98.5% end-to-end energy conversion efficiency, and can be deployed and operational within 24 hours.

Compared to traditional transformers, solid-state transformers offer significant advantages. Traditional transformers operate at 50 or 60 Hz, while solid-state transformers can operate at tens to hundreds of kilohertz, with volume and weight reduced by more than 50%. Traditional transformer conversion efficiency ranges from 95% to 97%, while solid-state transformers achieve over 98.5%. Traditional transformers provide only voltage transformation, whereas solid-state transformers integrate multiple functions including power conversion, dispatching, and control. Traditional transformer response time is on the order of seconds, while solid-state transformers achieve millisecond response, and energy flow changes from unidirectional to bidirectional.

The main application scenarios for solid-state transformers span multiple fields. In AI data centers, an OCP white paper has clearly proposed that the 800V DC power supply architecture combined with solid-state transformers will become the standard power supply solution for next-generation AI data centers. In smart distribution grids, they can adapt to high-proportion renewable energy integration and AC/DC hybrid distribution networks. In renewable energy integration, they can enhance wind and photovoltaic grid connection capabilities and improve grid adaptability. In energy storage systems, their efficient rectification and bidirectional dispatching capabilities can significantly improve system efficiency. They can also be applied to rail transit traction power supply and electric vehicle ultra-fast charging clusters.

On the international front, LS Electric's subsidiary LS Power Solution recently secured a contract worth 106.6 billion Korean won (approximately 70.2 million US dollars) to supply 345kV ultra-high voltage transformers for a data center microgrid project of a major technology company in the Midwestern United States, with delivery scheduled from the fourth quarter of 2027 to the first half of 2028.

Global capacity expansion remains slow. Major transformer manufacturers have announced expansion plans, but new capacity is not expected to come online until 2027 to 2029. GE Vernova is investing 1 billion US dollars to expand production across multiple US states, with its North Carolina facility adding large transformer capacity. Siemens Energy has an order backlog of 21.4 billion euros. Eaton's electrical business order backlog stands at 15.3 billion US dollars.

Regarding standards development, at the 2026 OCP Global Summit, NVIDIA released a white paper titled "800VDC Architecture for Next-Generation AI Infrastructure," explicitly proposing that the 800V DC power supply architecture combined with solid-state transformers will become the standard power supply solution for next-generation AI data centers.

Industry outlook: Morgan Stanley projects that the US transformer super cycle will continue until 2030, and Goldman Sachs has raised its forecast for US transformer import dependence to 60%. The three factors of AI computing power demand, grid upgrades, and equipment replacement are expected to sustain strong export growth momentum. For solid-state transformers, the three variables of policy support, technological maturity, and application scenario growth have simultaneously matured, and the period from 2027 to 2030 will mark the window for large-scale solid-state transformer applications. Breakthroughs in wide-bandgap semiconductor technologies such as silicon carbide are the core driving force. The choice between traditional transformer and solid-state transformer technology paths will profoundly affect companies' medium to long-term competitiveness.