Global refining crunch sends fuel margins soaring

The global energy crisis has shifted downstream. While crude oil prices dominate headlines, the more acute pressure point in energy markets is now in the world's refineries, where a convergence of geopolitical disruptions has removed millions of barrels of refined fuel from circulation and sent refining margins to historic levels.

Multiple Disruptions Compound Supply Loss

The Iran war, sustained Ukrainian drone attacks on Russian refining infrastructure, and Chinese restrictions on fuel exports have collectively strained global refined-product supplies, according to The Wall Street Journal News Corp ↘ 3.58%. The U.S. 3-2-1 crack spread — a benchmark measuring the profit from converting crude into gasoline and diesel — surged above $70 last month, a level roughly four times its historical norm.wsj

"Refining margins remain elevated because every additional barrel of product has become significantly more valuable than every additional barrel of crude," said Sumit Ritolia, lead analyst for refining supply and modeling at Kpler.wsj

Russian refinery output has fallen to its lowest level in more than two decades following Ukrainian drone strikes that have intensified throughout 2026. Ukraine struck refineries in Russia's Krasnodar and Samara regions as recently as August 8, following a July attack on Russia's largest refinery in Omsk. Moscow has imposed a temporary diesel export ban in response, further tightening European supplies. On Tuesday, Ukraine said it attacked another refinery in Orsk, in Russia's Orenburg region.globalbankingandfinance+3

Strait of Hormuz Remains Choked

Traffic through the Strait of Hormuz, which carried roughly a fifth of global oil and liquefied natural gas supplies before the conflict began in late February, remains severely restricted. Shipping data showed just six vessels transited the strait on Monday, compared with a 10-day average of about 11. Crude and refined product net exports through Hormuz averaged 3 million barrels per day in the week ending August 7, down from 4.4 million the previous week, according to Barclays ↘ 2.72% analysts.globalbankingandfinance

Bloomberg reported Tuesday that satellite imagery showed 12 ship-to-ship oil transfers outside the strait, indicating some tankers continue to cross "dark" without broadcasting their positions. Talks between Oman and Iran on reopening shipping are at an "advanced stage," Qatar's foreign ministry said Tuesday, though analysts remain skeptical.bloomberg+1

Little Room for Error

Refineries globally are running at utilization rates above 90–95%, leaving almost no spare capacity to absorb further disruptions. The strain follows years of closures in the U.S. and Europe; nearly 900,000 barrels per day of American capacity has been retired since 2023. China, despite ample refining capacity, has limited fuel exports through government quotas aimed at domestic energy security.energystrat+1

Repsol in Spain has turned to cheaper North American and Mediterranean crude after competition from Southeast Asian buyers drove up Atlantic Basin prices. Seasonal maintenance beginning in September is expected to tighten the market further. U.S. gasoline prices have already topped $4 a gallon, up from $3.16 a year ago.wsj

"Refinery utilization above 90–95% simply means there is very little operational flexibility left," Ritolia said. "Even a single outage could have a disproportionate impact on supplies."wsj