Topsoe and Preem complete successful co‑processing run for renewable diesel and SAF

Topsoe and Swedish refiner Preem have announced the successful completion of a co‑processing campaign producing renewable diesel and sustainable aviation fuel at Preem’s Gothenburg refinery.

The companies confirmed that the trial used waste‑ and residue‑based lipids blended with conventional refinery feedstocks, demonstrating the flexibility of existing hydrotreating units to produce low‑carbon fuels at scale.

The co‑processing run forms part of Preem’s long‑term plan to increase renewable‑fuel output and reduce the carbon intensity of its overall product slate. Topsoe supplied its HydroFlex technology, which enables refiners to integrate biogenic feedstocks without major infrastructure overhauls. The companies reported that the fuels produced met required specifications for both road transport and aviation use.

Preem noted that the trial supports its ambition to become a leading producer of renewable fuels in Scandinavia, with a target of achieving net‑zero emissions by 2035. The company is evaluating further upgrades to expand dedicated renewable‑fuel capacity.

Topsoe emphasised that co‑processing offers a rapid, capital‑efficient route for refiners to scale renewable‑fuel production while longer‑term standalone biorefineries are developed. The announcement highlights the increasing role of refinery integration in accelerating the availability of HVO and SAF across Europe.