Platts to amend its US West Coast petcoke assessment specifications

Platts, part of S&P Global Commodity Insights, will amend its US West Coast petroleum coke (petcoke) market assessments by adjusting sulfur specifications for the low- and mid-high sulfur assessments, effective Dec. 1, 2025.

Platts proposed the specification amendments to its assessment series in a proposal note published on Oct. 20, following research and market engagement. Some market participants indicated a need for full coverage of specifications for the low- and mid-sulfur grades of petcoke, whose values are defined primarily by sulfur content.

The specifications will reflect the value of FOB USWC petcoke cargoes with a 2% typical sulfur specification and a range of 1%-2.9% in US dollars per metric ton; the second adjustment will reflect the value of FOB USWC petcoke cargoes with a 4.5% typical sulfur specification and a range of 3%-5%. Specifications for FOB US Gulf Coast petcoke assessments will remain unchanged.

The assessment will continue to reflect cargoes of a volume of 10,000 metric tons or more. Cargoes of other grades, qualities and locations may be normalized for assessments.

Platts FOB USWC petcoke assessments appear in Platts Coal Trader, Platts Coal Trader International and on Platts Service Page Numbers GCN0961 and GCI0961. Full details of Platts petcoke assessments can be found in the Global Coal Specifications Guide.

Platts invites feedback, comments and questions to coal@spglobal.com and pricegroup@spglobal.com.

For written comments, please provide a clear indication if comments are not intended for publication by Platts for public viewing. Platts will consider all comments received and will make comments not marked as confidential available upon request.