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Transformer Oil: Recent Commodity Market Intelligence Analysis

I. Market Intelligence
(A) Price Dynamics
Recently, Shengyishe (Business Society) has not explicitly disclosed specific price data for transformer oil; however, based on its benchmark pricing model, transformer oil prices are influenced by factors including credit-term costs, logistics costs, brand-based price differentials, and regional price differentials. In light of overall supply-demand conditions, prices have exhibited a trend of stability with moderate upward movement, primarily driven by rising raw material costs, stricter environmental regulations, and growing market demand.

(B) Supply-Demand Situation
1. Supply Side
- Domestic Production Capacity: China National Offshore Oil Corporation’s (CNOOC) “Haijiang” transformer oil annual production capacity has exceeded 450,000 metric tons. In 2025, cumulative production and sales reached 350,000 metric tons, capturing 50% of the domestic market share, demonstrating stable and high-quality supply capability. Other participants in the competitive landscape include petrochemical enterprises, specialty lubricant producers, foreign-invested companies, and private-sector firms; however, “Haijiang” maintains a dominant position in the naphthenic-based transformer oil segment.
- Import Status: The domestic high-end transformer oil market remains reliant on imports. For instance, the market for transformer oil used in transformers rated at 500 kV and above has long been dominated by international players such as Nynas and Shell, with domestic localization rate remaining below 40%. Nevertheless, import dependency is gradually declining as domestic enterprises achieve technological breakthroughs.

2. Demand Side
- Domestic Demand: Transformer oil demand is steadily increasing, propelled by industrial green transformation, retrofitting of aging grid infrastructure, and implementation of China’s “dual carbon” (carbon peak and carbon neutrality) policies. In 2026, the domestic oil purification equipment market size increased year-on-year by 9.3%, with the power sector constituting the core end-user. Ongoing procurement demand continues to emerge from ultra-high-voltage (UHV) substations, pumped-storage hydropower projects, and new-energy applications—including wind power and energy storage systems. Concurrently, replacement demand from aging equipment in metallurgy, petrochemicals, and machinery manufacturing sectors is also rising.
- Export Demand: In the first half of 2026, the transformer export market demonstrated sustained growth, with cumulative export value reaching USD 5.74 billion in June, representing a 31.4% year-on-year increase. Among product categories, oil-immersed transformers with rated capacity between 10 MVA and 220 MVA generated the highest export value—USD 1.375 billion—contributing most significantly to total market scale. Grid construction demand in North America and the Middle East is notably robust, with the United States emerging as the largest export destination, accounting for USD 616 million in cumulative exports.

(C) Industry Trends
1. Stricter Environmental Regulations: Globally tightening environmental policies—including the EU’s PFAS Regulation banning fluorinated additives—and China’s inclusion of transformer oil in its newly established list of priority pollutants subject to control, have substantially raised biodegradability requirements. These developments compel manufacturers to reformulate products, thereby increasing environmental compliance costs while simultaneously creating growth opportunities for eco-friendly transformer oils.
2. Accelerated Technological Upgrading: Localization rates remain low for ultra-high-voltage direct-current (UHVDC) converter transformer oils, where critical technologies continue to be monopolized by a few international enterprises. Domestic manufacturers must overcome key technical bottlenecks—including precise aromatic hydrocarbon content control and enhanced oxidation stability—to strengthen competitiveness in high-end markets.
3. Market Structure Diversification: The transformer oil market exhibits a “dual-track parallel” structure: mineral-based oils retain dominant market share (exceeding 70%) due to cost advantages, whereas bio-based and synthetic ester-based oils demonstrate double-digit annual growth rates. Internally, export product mix is also increasingly differentiated: medium-to-large-capacity oil-immersed transformers and select large-capacity alternative transformer types dominate export volumes and contribute the majority of incremental growth, whereas small-capacity transformers show relatively weak performance.

II. Analytical Assessment
(A) Price Outlook
Short-term transformer oil prices are expected to maintain stability with modest upward momentum, driven by rising raw material costs, heightened environmental compliance requirements, and expanding demand. In the longer term, as domestic enterprises achieve technological breakthroughs and expand production capacity, intensifying competition may gradually narrow price appreciation.

(B) Supply-Demand Outlook
1. Supply Side: Domestic production capacity is ample; however, high-end products still rely significantly on imports. With continued technological upgrading and capacity expansion by domestic enterprises, import dependency will progressively decline.
2. Demand Side: Domestic demand is projected to sustain steady growth, while export markets continue expanding—especially in North America and the Middle East, where grid infrastructure development is driving robust demand. Overall, transformer oil demand is expected to remain on an upward trajectory over the near to medium term.

(C) Industry Risks
1. Raw Material Price Volatility: Fluctuations in prices of key feedstocks—such as naphthenic base oils—may impact production costs and price stability for transformer oil.
2. Technology Substitution Risk: Advancements in solid-state transformer technology pose a potential disruptive threat to traditional oil-immersed transformer markets, thereby indirectly challenging the transformer oil industry.
3. Regulatory/Policy Risk: Increasingly stringent global environmental regulations may raise corporate compliance costs and affect product competitiveness in both domestic and international markets.

III. Forecast
(A) Price Forecast
Transformer oil prices are projected to maintain a stable yet slightly upward trend over the next 3–6 months, with anticipated increases ranging between 3% and 5%. Over the longer term, price growth is expected to moderate and stabilize.

(B) Supply-Demand Forecast
1. Supply Side: Domestic enterprises will continue increasing R&D investment to enhance localization rates for high-end products. Concurrently, expanded capacity and intensified competition will further strengthen overall supply capabilities.
2. Demand Side: Domestic demand is expected to persistently grow—particularly in UHV transmission, new-energy integration, and related infrastructure projects. Export markets will likewise continue expanding, especially in North America and the Middle East, where demand remains strong.

(C) Industry Trend Forecast
1. Rising Share of Eco-Friendly Products: As global environmental standards tighten and consumer environmental awareness grows, the market share of environmentally sustainable transformer oils will steadily increase.
2. Accelerating Technological Upgrades: Domestic enterprises will continue ramping up R&D efforts to break through critical technological barriers and bolster competitiveness in high-value segments.
3. Increasing Market Concentration: Intensifying competition and accelerating industry consolidation will lead to higher market concentration, enabling leading enterprises to secure larger market shares.