In a landmark move for UK refining, Hynamics UK (EDF Group) and Hy24, a leading low-carbon hydrogen fund, have signed an exclusive memorandum of understanding (MoU) to build a £300 million green hydrogen plant adjacent to the ExxonMobil Fawley refinery. This project—shortlisted under the UK’s Hydrogen Allocation Round 2 (HAR2)—aims to supply electrolytic hydrogen directly to the refinery, replacing fossil-fuel-derived hydrogen and cutting CO₂ emissions by up to 100,000 tonnes per year.

The 120 MW electrolyser facility will form part of Fawley’s broader decarbonisation roadmap, leveraging the refinery’s infrastructure while strengthening its role in the UK’s green hydrogen economy. The initiative also underlines Fawley’s strategic importance: currently, the refinery produces a significant share of the UK’s jet fuel, servicing major airports like Heathrow.

For refining technology stakeholders, this represents a clear signal: low-carbon hydrogen adoption is accelerating, and established refineries are becoming pivotal hubs for the energy transition. Companies working on electrolysis, purification, and hydrogen integration now have a concrete application case at a major downstream asset.