China's Iran Oil Channel: A Discounted Flow and Its Price Impact

The core supply flow is now a narrow, discounted channel. Iran's exports have collapsed, with nearly all maritime traffic halted in the Strait of Hormuz. The sole exception is a handful of vessels carrying oil to China and India, making Beijing the dominant buyer. China imports about 1.4 million barrels per day, which represents 80% to 90% of Iran's total exports.

This oil is part of a long-term, discounted agreement. Iranian Light crude has traded at a $8 to $10 a barrel discount to Brent for delivery to China. This financial channel, secured by the 2021 Iran-China 25-year deal, has been a key cost-saving lifeline for Chinese refiners, particularly the independent "teapot" refineries in Shandong.

The channel is now under direct threat. The US and Israeli strikes on Iran's Kharg Island oil hub have caused severe infrastructure damage, halting production and exports. This disruption directly attacks the pre-positioned access that has allowed China to secure discounted barrels for years.

Price Impact and Market Liquidity

The immediate price impact of the disrupted flow has been muted. Despite the severe damage to Iran's Kharg Island, Brent crude has fluctuated around $67-68 per barrel, well above the EIA's 2026 forecast of $58. This reflects persistent risk premiums, but not a spike from the lost barrels. Global markets have absorbed the potential shortfall, aided by alternative suppliers like Russia.

The key pressure point is the cost of replacement. The 1-1.4 million barrels per day of discounted Iranian crude now lost to Chinese refiners must be replaced. This creates direct upward pressure on the global price, as China bids for substitute supplies. A disruption of this scale could be worth at least a $10–12 increase in the global price of crude oil, according to one scenario analysis.

Market liquidity has held, but the channel's collapse forces a costly recalibration. The discounted flow that benefited Chinese "teapot" refineries is gone, raising their input costs. While the broader market absorbed the shock, the financial channel itself is broken, shifting the cost burden onto importers and potentially tightening refining margins.

Catalysts and Financial Risks

The immediate catalyst is the duration of the Strait of Hormuz closure. A prolonged shutdown beyond three months would test China's strategic stockpile buffer. The country has been building these reserves, with imports up 15.8 percent in January and February as a hedge. However, the 1.4 million barrels per day of discounted Iranian crude now lost must be replaced, forcing a drawdown on these buffers and pushing China to bid for higher-cost alternative supplies.

A major escalation poses a permanent risk. Attacks on key infrastructure like Kharg Island could permanently degrade Iran's export capability, collapsing the financial channel. The US and Israel have already struck Kharg Island facilities, and Iran has threatened to target any facility with US ties. This escalates the risk of a permanent cutoff, which would raise input costs for Chinese refiners and potentially tighten global refining margins.

The market's focus will shift to Chinese stockpile drawdown rates and teapot refinery margins. As the conflict drags on, the financial impact becomes clearer. The loss of the discounted flow directly pressures the independent "teapot" refineries that have relied on it. Their margins will face headwinds, while the broader market sees upward pressure from the need to replace these barrels.