Fuel oil markets entered the second half of 2026 with a distinctly tight posture across the world's busiest bunkering hubs. In Singapore, the world's largest bunker port, VLSFO availability remains constrained with recommended lead times of 14-19 days, according to ENGINE's July 22 East of Suez report. HSFO and LSMGO are also tight at 9-13 and 9-11 day lead times respectively.
The root cause traces back to the Strait of Hormuz disruptions that began in April. Singapore's fuel oil inventories have yet to recover to pre-crisis levels, hovering below 20 million bbl through July. Even with a surge in net fuel oil imports — up 105% in early July — stocks remain structurally low compared to 2025 norms, according to Maritime and Port Authority of Singapore data. Fuel oil volumes at Singapore dropped roughly 35% year-on-year between January and May, falling from 382,000 mt to 247,000 mt.
The Americas show a similar pattern. US fuel oil output rose 5% to 318,000 b/d in July, while imports climbed to 180,000 b/d, according to EIA data cited by IndexBox. But overall supply dropped from 353,000 b/d in June to 292,000 b/d in July, and inventories fell by 561,000 bbl to 21.18 million bbl. The net draw despite higher production and imports indicates robust demand pulling barrels into consumption faster than they can be replaced.
In Houston, bunker availability is described as normal with VLSFO and HSFO lead times of 5-6 days and LSMGO at 3-4 days. But a tropical storm has disrupted bunkering operations in parts of the US Gulf, and Panama demand has softened. In Brazil, VLSFO and LSMGO availability is tightening in Paranagua and Rio Grande.
Across the Atlantic, the ARA hub (Amsterdam-Rotterdam-Antwerp) shows prompt delivery tightness with 5-7 day recommended lead times. Independently held fuel oil stocks rose 13% in June from May, per Insights Global data, but prompt availability suggests strong off-take and limited logistics capacity. In the Mediterranean, Gibraltar Strait ports and Barcelona all require roughly a week's notice for all fuel grades.
New MARPOL regulations are adding structural demand pressure. The Annex VI Emission Control Areas (ECAs) in the Canadian Arctic and Norwegian Sea, effective March 1, 2026, tightened sulfur oxide, nitrogen oxide, and particulate limits for vessels in those regions. This forces another tranche of the global fleet toward low-sulfur and very-low-sulfur fuel oil, further tightening VLSFO markets.
At Port Suez, a critical chokepoint for east-west bunkering, HSFO inventories remain tight and VLSFO stocks are near depletion. This creates a compounding risk for vessels transiting the Suez Canal who depend on bunkering there — a disruption point that can cascade through shipping schedules.
The demand shift toward low-sulfur grades is structural and accelerating. South Korean refiner S-Oil began supplying B30 VLSFO — a 30% sustainable biofuel blend — on July 22, specifically targeting car carriers and vessels serving EU and IMO carbon-intensity requirements. The global bunker fuel market is projected to grow from $138 billion in 2026 to $195-275 billion by 2034, driven by maritime trade growth and premium fuel adoption, according to Fortune Business Insights and IMARC Group.
The bull case for fuel oil prices centers on extended supply-chain recovery timelines from the Hormuz disruption, coupled with increasing regulatory demand for compliant fuels. The bear case would require a rapid normalization of Singapore inventories and a resolution of Gulf tensions that allows cargo arrivals to accelerate. In the base case, expect continued tightness through Q3 2026, with potential easing in Q4 as winter demand patterns shift toward heating rather than bunkering.
This is not a market for just-in-time bunker procurement. Singapore VLSFO requires two weeks of lead time — any shorter and you are paying a premium or risking delays. Buyers with exposure to Singapore, ARA, or Suez should move from spot to term contracting for core volumes, particularly for VLSFO grades. Geographic diversification matters more than usual: Houston still offers sub-week lead times, but tropical storms are a recurring risk. For vessels trading through the new Canadian Arctic and Norwegian Sea ECAs, ensure fuel specifications are locked in at origin rather than relying on local supply at destination. The regulatory trend is unambiguous — low-sulfur and biofuel blends will command increasing premiums. Buyers should pre-qualify suppliers for B30 and other alternative fuels, especially for fleets exposed to EU ETS and FuelEU Maritime carbon costs. The wild card is the Strait of Hormuz: any re-escalation will hit Singapore first and hardest, as cargo arrivals from the Gulf are the primary source of inventory rebuild.