Nine Million Barrels Under Jurong: Why Saudi Oil Is Moving Into Singapore’s Rock
Some of the most important real estate in Asia’s energy system has no view at all. It sits about 150 metres beneath Jurong Island, carved out of solid rock, and it is about to get a new tenant. Singapore and Saudi Arabia have announced their intent to store Saudi crude in the Jurong Rock Caverns from the second half of 2027, with Saudi Aramco signing a memorandum of understanding with Singapore’s Energy Market Authority and JTC Corporation during Singapore International Energy Week.
On paper the deal is modest: the caverns hold up to 1.47 million cubic metres, roughly nine million barrels of liquid hydrocarbons. That is less than a single day of Asia’s oil imports. But the agreement is less about volume than about geography, timing and trust, and each of those tells us something about how the region is rethinking energy after a brutal year.
A year that broke the old assumptions
Before the war involving Iran, Asia sourced around two-thirds of its oil from the Middle East, and almost all of it passed through the Strait of Hormuz. When that route was disrupted, importers across the region did what the textbooks say: they drew down their inventories. The problem is that textbook reserves are designed for short shocks. A prolonged disruption leaves governments asking how quickly tanks can be refilled and from where.
With Brent trading well above US$100 a barrel, that question has become very practical. Every barrel held closer to the customer is a barrel that does not need to cross a contested strait at the moment it is most needed. Saudi Arabia’s energy minister framed the move in exactly these terms, speaking of bringing supply closer to key Asian markets to make the network more flexible.
What each side gets
For Singapore, the logic is straightforward. The city-state has no domestic oil, yet it is one of the world’s largest refining and bunkering hubs. Its economy depends on keeping refineries, petrochemical plants and ship fuel suppliers running. Officials say the stored crude would support the country’s energy needs during a supply disruption. Even if the final terms are still being negotiated, having a major producer’s barrels physically on the island is a form of insurance that money alone cannot easily buy in a crisis.
For Saudi Arabia, the benefits are commercial and strategic. Storage in Singapore puts Saudi crude a short voyage away from refiners in Southeast Asia, China and beyond. It lets Aramco respond faster to price spikes, smooth deliveries when tanker routes are congested, and compete more effectively against rival suppliers from the Americas, Africa and Russia who have been courting Asian buyers. It also deepens a relationship with a country whose influence in shipping, trading and finance is far larger than its size suggests.
A pattern, not a one-off
Singapore is not the first Asian partner to host Saudi oil. Aramco already stores crude in Okinawa under an arrangement with Japan’s state energy agency, with capacity expanded to 8.2 million barrels in 2017, and in 2023 it agreed to keep 5.3 million barrels at South Korea’s reserve facilities in Ulsan. In both cases, the host government gets priority to buy the oil in an emergency. Extending the model to Southeast Asia’s main trading hub looks like the natural next step.
The bigger picture is that energy security in Asia is shifting from a national stockpile model to a shared, networked one. Producers place oil near consumers; consumers grant producers a foothold in their markets. Both sides reduce their exposure to a single chokepoint. It is not as robust as owning the oil outright, but it is cheaper than building and filling vast strategic reserves alone.
The open questions
Several details remain unclear. No financial terms have been disclosed, and the countries say negotiations should conclude within a few months. The most important unanswered point is how the oil would be allocated in a real emergency. Would Singapore have first call on the barrels, as Japan and South Korea do? At what price? And what happens if a disruption is so severe that Saudi Arabia needs to redirect the oil elsewhere?
There is also the question of what this means for the rest of ASEAN. Many of Singapore’s neighbours hold thin reserves and have struggled to finance new storage. If the Jurong arrangement works, it could become a template for regional cooperation, or it could simply reinforce Singapore’s role as the place where energy security is concentrated while others remain exposed.
Finally, there is the climate dimension. Singapore has committed to net-zero emissions by 2050, and locking in long-term crude storage may look awkward alongside that goal. Officials would argue, with some justification, that transition takes decades and that a crisis-proof fuel supply is the foundation that allows cleaner investments to proceed.
Small cavern, big signal
Nine million barrels will not shield Asia from another major disruption on its own. What the deal does is signal that both producers and importers have taken the lessons of the past year seriously. Supply chains that once relied on a steady flow through a narrow strait are being rebuilt with buffers, closer to where energy is used. Under Jurong Island, quietly and out of sight, the region is buying itself a little more time for the next shock.