China has maintained its position as the largest importer of Iranian oil, despite the heavy U.S. sanctions targeting Tehran’s oil exports. For years, China has been importing Iranian crude in large volumes, circumventing the sanctions through a complex system of shadow shipping and alternative payment systems.
Key Highlights
Continued Imports Amid Sanctions:
Despite the U.S. sanctions, particularly targeting Iranian oil exports, China’s crude imports from Iran have continued to rise, with imports doubling in 2024 compared to 2022, reaching approximately 17.8 million barrels per day (mbd).
China’s total imports of Iranian oil have remained stable through 2024, with about 6.8 mbd coming from Iran in the first five months of 2024—an indicator of sustained demand.
Shadow Supply Chain:
China’s independent refineries, also known as “teapots”, have become the key buyers of discounted Iranian oil. These smaller refineries are less susceptible to direct international sanctions and can purchase oil without exposure to international banking systems.
A key method of bypassing sanctions is transshipment, where oil is transferred from Iranian tankers to non-sanctioned vessels in locations like the Middle East Gulf or Strait of Malacca before reaching Chinese ports. This process, known as “ship-to-ship” transfers, obscures the origins of the cargo, making it harder for authorities to trace.
Tankers involved in this trade frequently “spoof” their locations, broadcasting fake route information to hide their involvement in the illicit supply chain.
Yuan-Denominated Payments:
Payments for Iranian oil are often made in Chinese renminbi (yuan), bypassing the U.S. dollar-dominated financial system and SWIFT network. This reduces the risk of exposing Chinese financial institutions to U.S. sanctions and allows the trade to continue largely unimpeded.
Discounted Iranian Oil:
Iranian oil is often sold at a significant discount compared to other international oil sources. For example, Iranian Light Oil has been traded for about $6 to $7 less per barrel than similar grades like the UAE’s Upper Zakum crude. The discount makes Iranian oil highly attractive to refiners, particularly in China.
Growing Iranian Oil Exports:
Despite sanctions, Iranian petroleum and petrochemical sales are estimated to have generated $70 billion in 2023. The bulk of these exports are directed toward China, with the U.S. Energy Information Administration reporting that nearly 90% of Iran’s crude oil and condensates continue to flow to China.
China’s Refining Sector and the Role of Teapots:
Teapot refineries are independent, private Chinese firms that have been the major consumers of Iranian oil. These refineries often buy Iranian crude on a delivered basis, which means Iranian sellers handle the logistics of transporting the oil, further reducing the risk to Chinese buyers.
Potential Easing of Sanctions?
Recently, former U.S. President Donald Trump suggested that China could continue buying Iranian oil, surprising markets. This comment led to a 6% drop in U.S. crude oil prices. However, the White House later clarified that Trump’s remarks were not an indication of any easing of sanctions.
Analysts speculate that Trump’s comments might have been a “calculated trade-off,” signaling goodwill towards China in advance of trade negotiations and attempting to encourage Iran to uphold the ceasefire and re-engage in nuclear talks. While no official easing of sanctions has been confirmed, there is a possibility that the U.S. may slow the pace of new sanctions, allowing for continued oil imports by China.
Challenges in Tracking Iranian Oil:
The obfuscation techniques used by Iran and its shipping partners make it difficult for authorities to track the flow of oil from Iran to China.
Ship-to-ship transfers and spoofing techniques continue to complicate efforts to monitor and disrupt this trade.
Conclusion
Despite heavy U.S. sanctions, China continues to be the primary importer of Iranian crude. The shadow supply chain, along with the use of renminbi payments and ship-to-ship transfers, allows China to bypass the U.S.-dominated financial and shipping systems. As the U.S. administration evaluates its next steps, the physical oil market is unlikely to see any immediate disruption to these flows. The geopolitical and economic factors at play suggest that China’s role as a top buyer of Iranian oil is unlikely to change soon.
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