The core of the transformer supply shortage in 2025 is the structural mismatch of demand explosion and rigid supply constraints. The global production capacity gap is about 30%, and the delivery cycle of top manufacturers generally exceeds 2 years.
1, Demand side: Four overlapping and explosive
1. The urgent need for new energy grid connection: By 2025, the global installed capacity of photovoltaic/wind power will exceed 350GW, with approximately 500 distribution transformers and 300 wind power required per GW of photovoltaic power. The grid connection demand is 1.5-3 times higher than that of thermal power projects.
2. Intensive construction of ultra-high voltage: By 2025, there will be 12 newly approved ultra-high voltage projects in China, with a total investment of over 200 billion yuan. Each line requires dozens of large main transformers/converters, with high technical requirements and strong customization.
3. AI data center expansion: The power of a single cabinet has increased from 5-10kW to 50-100kW, and the global electricity consumption of AI data centers has increased by 45% year-on-year, driving a surge in demand for high-efficiency transformers.
4. Peak of stock update: 70% of transformers in the United States are over aged and in service, while power grids in many European countries are aging. The demand for replacement is concentrated and released, resonating with new demand.
2, Supply side: Triple Hard Constraints
1. Delayed capacity expansion: The construction cycle of new capacity is 1-2 years, and the explosive growth of demand far exceeds the rate of capacity ramp up. The utilization rate of capacity by top manufacturers exceeds 90%.
2. Core material/component bottleneck: High end oriented silicon steel and copper materials account for over 60% of the cost, and the supply of high-end oriented silicon steel is concentrated with limited production capacity; Key components such as sleeves and tap changers are also tight.
3. Technical and production barriers: High end products such as ultra-high voltage and large converter transformers have high technical barriers, long production cycles, high levels of customization, and are difficult to rapidly increase production on a large scale.
3, Other catalytic factors
-Export driven: Domestic production capacity accounts for 45% of the global total, with an export value of 46.48 billion yuan in the first nine months of 2025. The European market increased by 138% year-on-year, further squeezing domestic supply.
-Standard upgrade: New regulations on energy efficiency and environmental protection promote the replacement of high-efficiency and energy-saving transformers, accelerating demand release.
Conclusion
The short-term gap is difficult to quickly alleviate and is expected to last until at least the end of 2026; In the medium to long term, it is necessary to gradually balance production expansion, material supply guarantee, technological upgrading, and supply chain optimization.
