23-03 2026
High-Voltage Components Industry Enters "Short-Term Tightness, Long-Term Deficit" Cycle: AI Computing Power Drives Technological Transformation, Accelerating Domestic Substitution
Driven by the explosive growth of artificial intelligence (AI) computing power, accelerated modernization of global power grids, and in-depth advancement of green energy transition, the high-voltage components sector—long categorized as traditional industrial goods—is embracing a historic inflection point and structural opportunities. Spanning from traditional oil-immersed transformers, high-voltage isolating switches, and gas-insulated switchgear (GIS) to solid-state transformers, high-power IGCT/IGBT converters, high-voltage DC capacitors, and UHV insulation devices tailored for new power systems, a global battle for production capacity, technological iteration, and supply chain restructuring has fully unfolded. The industry has officially entered a "Short-Term Tightness, Long-Term Deficit" cycle—characterized by a shortage of high-end production capacity in the short term and persistent supply-demand gaps in the long run—with technological upgrading and domestic substitution advancing in tandem as the core themes of industry development.
The exponential expansion of AI computing power has become the primary catalyst for the surge in demand for high-voltage components. The power per rack in hyper-scale data centers has surged from a dozen kilowatts to hundreds of kilowatts, with megawatt-class racks emerging as the mainstream trend. A single AI computing center boasts a power load comparable to that of a medium-sized city, imposing stringent requirements for ultra-high efficiency, power density, and stability in high-voltage power transformation, distribution, and conversion. Traditional low-voltage power supply architectures are no longer compatible with high-computing scenarios, driving the rapid adoption of technologies such as high-voltage direct current (HVDC) transmission and high-voltage direct charging. This has forced high-voltage components to evolve toward higher frequency, miniaturization, lower loss, and higher reliability. Third-generation semiconductor materials such as gallium nitride (GaN) and silicon carbide (SiC) are increasingly applied in high-voltage power devices, propelling leapfrog improvements in product performance and energy efficiency. Meanwhile, global power grids are entering a phase of aging renewal and intelligent upgrading, with Europe and the United States launching hundreds of billions of dollars in grid renovation programs. Coupled with rigid demand for high-voltage transmission and distribution equipment driven by the large-scale integration of wind and solar power, the market gap for high-voltage components has further widened. Industry data shows that the annual supply-demand gap for global high-voltage transformers has reached 30%, with delivery lead times extended from the usual 12 months to over three years. High-end UHV devices and core power modules are particularly scarce, and this shortage is expected to persist until 2029.
Behind this supply-demand imbalance lies a profound transformation of the global high-voltage components industry. On one hand, traditional overseas giants are constrained by production bottlenecks, rising raw material costs, and a shortage of skilled workers, lagging behind demand growth in capacity expansion and limiting their ability to supply high-end products. On the other hand, Chinese enterprises, leveraging their accumulated expertise in UHV technology, complete industrial chain support, and large-scale manufacturing advantages, have continued to make breakthroughs in technological research and market substitution. The localization rate has steadily increased across traditional equipment such as UHV transformers and high-voltage switches, as well as core components including converters, DC capacitors, and high-power semiconductor modules. Some high-end products have transitioned from "catching up" to "keeping pace" and even "leading the pack." On the policy front, intensified efforts to build new power systems and achieve supply chain self-reliance have tilted grid investment toward high-voltage and UHV sectors, providing vast application scenarios for domestic high-voltage components. On the market side, unstable overseas supply chains and price hikes by foreign brands have accelerated downstream customers’ shift to domestic suppliers. Domestic substitution has evolved from filling low-end gaps to penetrating high-end markets, and from single-product replacement to upgrading system-level solutions.
This industrial transformation, driven jointly by AI computing power and energy transition, has completely reshaped the development logic of the high-voltage components industry. Once a traditional manufacturing segment, it has now become a core sector marked by high technology intensity, capital intensity, and strategic importance, with technological innovation and supply chain independence as enterprises’ core competitiveness. Going forward, as computing power demand continues to grow, grid upgrading is fully implemented, and domestic technologies keep advancing, the high-voltage components industry will complete production capacity restructuring and technological leapfrogging amid the "Short-Term Tightness, Long-Term Deficit" cycle. Chinese enterprises are poised to dominate the global high-voltage components landscape by virtue of their complete industrial chain advantages, providing solid support for the digital economy and energy transition.
