• China has dramatically increased its strategic oil reserves since early 2025, amassing supplies at a rate of up to 1 million barrels daily.
  • The stockpiling push brings national reserves to an estimated 1.25 billion barrels, with plans to expand capacity further to insulate against potential U.S. sanctions on Russian crude.
  • Beijing's aggressive accumulation has absorbed much of the increased OPEC+ output, providing unexpected stability to global oil markets despite geopolitical tensions.

China has embarked on one of the most aggressive oil stockpiling campaigns in its history, with people familiar with the matter describing daily accumulation rates approaching 1 million barrels since the beginning of 2025. The buildup comes as Beijing seeks to fortify its energy security against potential U.S. sanctions targeting Russian oil imports and broader global supply volatility.

The scale of the accumulation has brought China's strategic and commercial petroleum reserves to approximately 1.25 billion barrels, according to estimates from market analysts who track tanker movements and storage data. This represents the largest increase since 2020 and positions China to potentially reach 1.5 billion barrels by next year, dwarfing the United States' strategic reserve of 831 million barrels.

Russia has emerged as a crucial supplier in this effort, providing about 17% of China's oil imports this year—much of which has been directed into storage rather than immediate consumption. "The Chinese have been methodical and strategic about this buildup," said one energy analyst who requested anonymity to discuss sensitive market movements. "They're using discounted Russian crude to build a buffer that would protect their economy from any future supply disruptions."

The January 2025 Energy Law formalized this approach, creating a comprehensive oil security framework that requires both private and state companies to maintain strategic reserves overseen by the government. The legislation effectively integrates commercial storage into the national reserves structure, giving Beijing greater control over the country's energy buffer.

Market participants note that China's timing has been particularly advantageous. The stockpiling coincided with discounted global oil prices in early 2025, allowing the country to build reserves at favorable cost levels. This buying surge has also absorbed much of the increased OPEC+ output, providing unexpected stability to international oil prices that might have otherwise faced downward pressure.

Beijing has consistently defended its Russian oil purchases as "normal and legitimate economic, trade and energy cooperation" while reiterating its opposition to unilateral sanctions without UN approval. The stance reflects China's broader strategy of maintaining energy relationships that serve its national interests, even as Western nations seek to limit Russia's oil revenue.

Infrastructure expansion continues to support the stockpiling strategy. At least 11 new storage facilities adding 169 million barrels of capacity are scheduled to come online by 2026, according to planning documents reviewed by analysts. The ultimate goal appears to be building reserves sufficient to cover three months of net imports—a target that would require expanding state-controlled storage capacity to between 1 billion and 2 billion barrels.

Tanker tracking data shows consistent flows of Russian Urals crude to Chinese storage sites throughout the first quarter, with some shipments arriving at discounts of $5-8 per barrel below international benchmarks. This price advantage has made the stockpiling operation economically attractive even as it serves strategic purposes.

As one European energy executive noted, "China is playing a long game here. They're building not just physical reserves but also bargaining power with suppliers and insulation from geopolitical shocks." The country's approach demonstrates how major economies are rethinking energy security in an increasingly volatile global landscape.

Correction: An earlier version of this article misstated the percentage of China's oil imports supplied by Russia. The correct figure is approximately 17%.