The Hormuz Crisis and China’s Energy Security Dilemma |
Features | Security | East Asia
The Hormuz Crisis and China’s Energy Security Dilemma
While Beijing has sought to diversify suppliers, expand storage capacity, and build alternative transport corridors, its energy security ultimately remains dependent on a few maritime chokepoints.
Despite sustained efforts to prioritize energy security across successive policy cycles, China remains exposed to external supply chains it does not control. The core problem is not simply import dependence, but reliance on maritime transit routes – particularly through the Strait of Hormuz – whose security ultimately lies beyond Beijing’s authority. The escalation of the Israel-U.S. war with Iran and the resulting disruption of traffic through Hormuz has transformed a long-recognized strategic risk into an immediate constraint, revealing the limits of China’s ability to ensure stable energy access under conditions of geopolitical contestation.
More fundamentally, the crisis highlights a deeper contradiction embedded in China’s energy strategy. While Beijing has sought to diversify suppliers, expand storage capacity, and build alternative transport corridors, it remains dependent on a global energy system structured around maritime openness and secured by actors with whom it is in strategic competition. This tension – between expanding material capabilities and limited control over the security environment in which those capabilities operate – defines the outer boundary of China’s energy security.
Structural Exposure and Systemic Asymmetry
China’s energy system is frequently described as relatively secure, with overall self-sufficiency exceeding 80 percent due to coal’s dominant role and the rapid expansion of renewable energy. Yet this aggregate measure obscures a critical imbalance. China remains heavily import-dependent for the liquid fuels essential to transportation, petrochemicals, and industrial activity – particularly crude oil. China imports roughly 4 billion barrels of crude annually, with a substantial share sourced from the Gulf and transported along maritime routes that traverse multiple strategic chokepoints.
This creates a deep-seated asymmetry between domestic energy abundance and external exposure. While China’s internal energy base appears robust, its oil supply is embedded in a global system shaped by external actors, contested geographies, and security arrangements beyond its direct control. Gulf producers – including Saudi Arabia, Iraq, the United Arab Emirates, Oman, Kuwait, and Qatar – account for roughly two-fifths of China’s crude imports. This dependence is not merely quantitative but systemic, reflecting both the scale of Gulf production and the lack of viable substitutes capable of matching it.
Moreover, official trade data understates China’s exposure. Despite the absence of recorded imports, multiple independent estimates suggest that Iranian crude, often routed through intermediaries and processed by independent refineries in Shandong, has accounted for more than 1 million barrels per day in recent years. This parallel supply chain enhances access to discounted oil but deepens China’s reliance on politically sensitive and sanction-prone networks. It also introduces opacity into the system, complicating both risk assessment and policy coordination.
The central point of fragility lies in chokepoint dependence. A large proportion of Middle Eastern exports to Asia transits the Strait of Hormuz, a narrow corridor through which a significant share of globally traded oil and liquefied natural gas flows. Interruptions – whether through physical obstruction, military escalation, or merely the withdrawal of shipping insurance – translate rapidly into systemic supply risk. In this sense, China’s exposure is geographic as much as economic. It depends on the uninterrupted functioning of a maritime artery it neither controls nor secures.
Buffering Capacity and Its Constraints
China entered the Hormuz crisis with substantial buffers. Its strategic petroleum reserves and commercial inventories have expanded significantly in recent years, with stockpiling accounting for a large share of incremental import demand. China’s total crude inventory is estimated at approximately 1.4 billion barrels, providing a meaningful cushion against short-term supply disturbances.
However, stockpiles primarily defer adjustment. They smooth supply over time but do not address the underlying dependence on external flows. In a scenario where the Strait of Hormuz remains obstructed for a prolonged period, reserves would gradually deplete, forcing China to make increasingly difficult trade-offs between economic stability and resource allocation.
At the operational level, the structure of China’s refining sector further complicates the picture. Independent “teapot” refineries in Shandong have played a central role in sustaining imports of sanctioned crude, particularly from Iran. Following the reimposition of U.S. sanctions in 2018, state-owned refiners largely withdrew from direct purchases, leaving smaller, semi-marketized actors to absorb the risk. This arrangement has allowed China to maintain access to discounted supplies while preserving plausible deniability at the state level.
Yet this decentralized system also introduces inefficiencies and fragility. Elevated inventories, both offshore and onshore, reflect not only opportunistic procurement but also constraints in processing capacity, tightening margins, and regulatory pressure. The result is a growing disconnect between China’s ability to secure barrels and its capacity to utilize them efficiently under stress. The system can accumulate supply faster than it can absorb it, limiting the effectiveness of stockpiling as a stabilizing mechanism.
Russia and Central Asian pipeline supplies provided a useful cushion, but one constrained by limited scalability and flexibility. Even with potential upgrades to the East Siberia–Pacific Ocean (ESPO) pipeline, upstream capacity and aging infrastructure cap near-term expansion, while fixed routes limit China’s ability to respond to price or supply shocks. Russian flows are also less reliable than they appear, given shifting U.S. sanctions dynamics and intensifying competition from India and other buyers for discounted barrels. As a result, overland imports enhance baseline stability but do not fundamentally alter China’s exposure to maritime risk.
Macroeconomic Transmission Under Compound Stress
The Hormuz crisis arrives at a difficult moment for China’s economy. Although China met its 5 percent GDP growth target in 2024, it continues to face multiple challenges, including weak consumption, deflationary pressures, and a prolonged property downturn. The collapse in real estate activity has had spillover effects on energy demand, with new housing starts falling sharply since 2019 and reducing construction-related diesel consumption. Energy security concerns are therefore emerging alongside, and reinforcing, domestic demand weakness.
Against this backdrop, a sustained oil price shock would intensify existing macroeconomic strains by deepening deflationary pressures in some sectors while squeezing energy-intensive industries. The impact would be particularly acute for Shandong’s teapot refiners, which rely on low-cost crude and operate on thin margins. Interruptions to Iranian flows combined with Brent prices above $100 per barrel would threaten their viability, with knock-on effects for employment and provincial revenues. Energy volatility thus becomes a transmission channel into domestic financial........