ITM Power has been selected by Uniper to supply the electrolyser package for its flagship Humber H2ub® (Green) project at the Killingholme site in the Humber, UK. The announcement, made on May 8, 2025, marks a significant milestone in advancing large-scale green hydrogen production in the region.
The selection follows a rigorous competitive tender and evaluation process, during which Uniper assessed several electrolyser manufacturers on their ability to meet the project’s technical and delivery requirements. As part of the initial agreement, ITM Power will provide Uniper with the engineering package for 120MW of installed electrolyser capacity, based on six of ITM’s 20MW POSEIDON units.
A full supply contract will be signed following the engineering phase and Uniper’s final investment decision for the project.
Uniper’s ambitious plans for the Humber H2ub® (Green) include green hydrogen production with an initial installed capacity of 120MW, with potential future expansion to more than 200MW. The green hydrogen produced will help decarbonise industrial processes by replacing refinery fuel gas in large-scale fired heaters at Phillips 66 Limited’s Humber Refinery, significantly reducing the refinery’s Scope 1 operational emissions. The project is targeted to become operational by 2029.
Uniper conducted a public consultation on the project in November 2024, and in April 2025, the Humber H2ub® was shortlisted as one of 27 projects under the UK Government’s Hydrogen Allocation Round 2 (HAR2) programme, reinforcing its importance to the UK’s hydrogen economy.
“This is a key milestone for the project, and we’re excited to work with ITM Power to further develop the engineering around their 20MW POSEIDON modules,” said Jan Taschenberger, COO New Green Power and Gas at Uniper.
Dennis Schulz, CEO of ITM Power, added, “We are delighted that Uniper has selected us for this landmark green hydrogen project in the UK. This initiative will not only support the decarbonisation of the Humber Refinery but also bring skilled job opportunities to Killingholme and the wider region.”
This project represents another important step toward achieving the UK’s net-zero ambitions and demonstrates the growing role of green hydrogen in decarbonising hard-to-abate industrial sectors.
