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The rollout of energy-efficient transformers is accelerating, making industry-wide efficiency upgrades a key priority.

2026-04-13

China’s total installed transformer capacity is approximately 16 billion kVA, with annual electricity losses of about 250 billion kWh, accounting for 40% of the nation’s total transmission and distribution losses.
The rollout of energy-efficient transformers is accelerating, making industry-wide efficiency upgrades a key priority.

China’s total installed transformer capacity stands at approximately 16 billion kVA, with annual electricity losses of about 250 billion kWh, accounting for 40% of the nation’s total transmission and distribution losses. The revised “Energy Efficiency Limit Values and Energy Efficiency Classes for Power Transformers” (GB 20052-2024) will be fully implemented in 2025, accelerating the adoption of low-loss technologies such as amorphous alloy transformers and three-dimensional wound‑core designs. Amorphous alloy transformers reduce no-load losses by 60%–80% compared with conventional silicon‑steel models, while three-dimensional wound‑core technology optimizes magnetic circuit design, cutting load losses by 15%. The Ministry of Industry and Information Technology, together with three other departments, has issued the “Implementation Plan for High‑Quality Development of Energy‑Saving Equipment (2026–2028),” which sets a target that by 2028, newly installed energy‑saving transformers will account for more than 75% of all new installations, and the share of energy‑saving transformers in service will reach 15%. The industry is shifting from scale expansion to quality‑and‑efficiency enhancement, with the market share of high‑efficiency products steadily growing, thereby helping to reduce losses and improve the efficiency of the power system.

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The penetration rate of smart transformers is rising, and digital operations and maintenance are emerging as a new industry trend.

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Global transformer supply and demand remain tight, with China’s production capacity and exports maintaining strong growth.

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