Generic Hero BannerGeneric Hero Banner
Latest market news

Rising supply pressures mid-sulphur coke prices

  • : Petroleum coke
  • 26/06/18

The fob US Gulf coast 4.5pc sulphur petroleum coke price fell to a four-month low this week, pressured by a recent rise in US mid-sulphur coke production, according to market participants.

A number of refineries across the US Gulf that typically produce high-sulphur coke, including Valero's 215,000 b/d St Charles refinery in Louisiana and Chevron's 365,500 b/d Pascagoula refinery in Mississippi, have now shifted to 4-5pc sulphur coke production, according to traders. This has led to a smaller differential between mid- and high-sulphur prices, one said.

Fob US Gulf 4.5pc sulphur coke fell to $84/t in Argus' assessment on 17 June, the lowest price for the grade since 14 January. The decline in mid-sulphur coke also narrowed its premium to the high-sulphur grade to $9/t from $12.50/t a week earlier. This is the smallest premium 4.5pc sulphur coke has held to 6.5pc sulphur since 18 March, when the spread was also $9/t.

The higher availability of mid-sulphur coke and narrower premium on an fob basis meant more buyers in Turkey were choosing this quality over high-sulphur coke. At least three cargoes of 5.5pc sulphur dry basis coke were heard to have sold at prices netting back to the mid-to-high $70s/t on an fob basis during the week, and the cfr Turkey 5.5pc sulphur assessment declined by $5/t on the week to $118.50/t. This narrowed the spread between cfr Turkey 5.5pc and 6.5pc sulphur coke to $3/t, the smallest premium since 31 December.

The recent rise in US mid-sulphur coke supply is likely in part because of higher Venezuelan crude shipments to the US. The US imported an estimated 565,000 b/d of Venezuelan crude last month, up from 118,000 b/d in May 2025, according to US Energy Information Administration data, with Valero, Phillips 66 and Chevron being the top recipients. Many refiners have looked to Venezuelan supply to replace crude from Saudi Arabia, Iraq and Kuwait, which has been unavailable for more than three months because of the war in the Middle East.

Rising heavy sour crude prices across origins in March were also expected to weigh on US high-sulphur coke production. Prices of medium-to-heavy sour crude, which produces higher-sulphur coke, rose following back-and-forth strikes between the US, Israel and Iran, narrowing its discount to lighter crude. Refined product prices also increased around the same time, which may have encouraged US refiners to switch to lighter crude slates to maximise product production.

But the recent US-Iran peace agreement could eventually revive flows of heavy sour Middle East crude to the US Gulf and may again raise high-sulphur coke production in the coming months. Still, vessel traffic through the strait of Hormuz may take several months to return to normal, according to shipbroker BRS, which could delay this shift.

Fob US Gulf petroleum coke prices $/t

Cfr Turkey petroleum coke prices $/t

Generic Hero Banner

Business intelligence reports

Get concise, trustworthy and unbiased analysis of the latest trends and developments in oil and energy markets. These reports are specially created for decision makers who don’t have time to track markets day-by-day, minute-by-minute.

Learn more