The China Solid-State Transformer (SST) market is rapidly expanding with increasing integration of advanced power electronics and grid modernization initiatives. With a rise in investments from both public and private sectors, SSTs are anticipated to play a pivotal role in the country’s mission to build a sustainable and smart energy infrastructure.
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China Solid-State Transformer Market Growth Drivers
Surge in Renewable Energy Integration: The rapid deployment of renewable energy sources, such as solar and wind in China, is propelling the demand for flexible and efficient power conversion solutions. State Grid Corporation of China (SGCC) is actively piloting projects that leverage solid-state transformers for seamless energy conversion and grid stability, making SSTs integral to the energy transition.
Government Support & Smart Grid Investments: The Chinese government’s continuous efforts to modernize the national grid through initiatives like 'Made in China 2025' and heavy investment into smart grid technologies have fueled the adoption of SSTs. Companies like China Southern Power Grid are collaborating with technology providers to deploy SSTs in pilot zones, supporting urbanization and enhancing energy delivery efficiency.
China Solid-State Transformer Market Trends
Advancements in Semiconductor Technology: Chinese companies such as TGOOD and NR Electric are harnessing the latest in semiconductor advances, particularly in silicon carbide (SiC) and gallium nitride (GaN) devices. This trend is resulting in SSTs with higher efficiency, lower losses, and enhanced reliability, making them more feasible for mass grid-level deployment.
Integration with Electric Vehicle (EV) Infrastructure: The adoption of solid-state transformers is accelerating as companies like BYD and State Grid partner to integrate SSTs within EV charging networks. The technology enables high-efficiency, bidirectional power flows, supporting fast-charging stations while maintaining grid stability, which aligns with the booming EV ecosystem in urban China.
China Solid-State Transformer Market Opportunities
Expansion into Rural Electrification: There is a growing opportunity for SSTs in rural grid expansion projects in western and central China. SSTs' efficiency and modularity can enhance power quality and integration of distributed renewables for underserved regions. Companies like TGOOD are exploring turnkey solutions tailored for these markets.
Export Potential for Domestic Manufacturers: With growing expertise in next-generation power electronics, leading Chinese SST manufacturers are exploring export opportunities to Southeast Asia and Africa. Enterprises such as NR Electric are eyeing strategic partnerships and licensing, leveraging China’s cost advantage and technological edge.
China Solid-State Transformer Market Revenue (USD Million), 2020-2035
The chart shows robust growth in the China SST market from 2020 to 2035. Starting at approximately USD 34 million in 2020, the market demonstrates an exponential upward trajectory driven by ongoing grid modernization and renewable integration. By 2025, the market is projected to reach USD 160 million. Continued investments and supportive policies propel further acceleration, hitting an estimated USD 720 million by 2030 and an impressive USD 2,300 million by 2035. The steepest growth occurs post-2028 as technology costs decline and widespread adoption accelerates, reflecting China’s ambition to lead the future power infrastructure landscape.
China Solid-State Transformer Market by Regions Share (%), 2025
In 2025, the East China region, encompassing Shanghai and Jiangsu provinces, dominates the SST market with a 36% share, reflecting the concentration of smart grid and urbanization projects. South China, led by Guangdong, follows at 22%, attributed to robust manufacturing and industrial activity. North China, with urban hubs like Beijing, holds a 17% share. Central China stands at 15%, driven by rural electrification efforts, while the West, still developing, holds a 10% slice but shows the fastest projected growth beyond 2025. This regional breakdown signifies a strong alignment with economic development and urbanization in China.
Recent Developments in the China Solid-State Transformer Market
In April 2024, State Grid Corporation of China (SGCC) completed a landmark pilot deployment of 20 MVA solid-state transformers in the Yangtze Delta region. Developed in partnership with NR Electric, this project serves as a benchmark for grid-scale adoption and aims to demonstrate improved voltage regulation, loss reduction, and digital monitoring, strengthening China’s leadership in advanced grid infrastructure.
In March 2024, TGOOD launched its next-generation SST platform, featuring enhanced bidirectional power flow for use in both renewable energy integration and electric vehicle charging corridors. This platform leverages silicon carbide (SiC) modular designs and has been successfully installed at key charging stations in Shenzhen, expanding fast-charging capabilities while improving grid resilience.
In February 2024, China Southern Power Grid initiated a collaborative research program with Shanghai Jiao Tong University to develop high-voltage SSTs rated up to 35kV for use in future ultra-high voltage (UHV) grid segments. The venture targets improved conversion efficiency and seeks to address the integration challenges posed by distributed energy resources and fluctuating grid demands.
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