A first-of-its-kind floating hydrogen production facility is being progressed in the Celtic Sea.
The Milford Haven: Hydrogen Kingdom (MH:HK) project will see the development of an innovative demonstrator facility that will produce hydrogen for renewable energy using a combination of offshore wind and electrolysis (the process of using electricity to split water into hydrogen and oxygen).
MH:HK is being delivered by a consortia of organisations dedicated to improving outcomes across the Celtic Sea region, including:
- Celtic Sea Power
- Dolphyn Hydrogen
- The Offshore Renewable Energy (ORE) Catapult
- Wales & West Utilities
The consortia have now advanced both the technical design and consenting pathway, bringing the demonstrator significantly closer to construction at the offshore Pembrokeshire Demonstration Zone (PDZ). The PDZ is a 90 km² test area off the south coast of Wales, leased from the Crown Estate and managed by Celtic Sea Power as part of the Pembroke Dock Marine programme.
MH:HK would initially deploy a 10–15 MW demonstrator, with plans to scale up to over 135 MW. This would produce more than 10,000 tonnes of hydrogen annually—enough to support decarbonisation across key industrial clusters and transport hubs in South Wales.
“Milford Haven: Hydrogen Kingdom helps further lay the foundations for a large scale, low-carbon hydrogen economy in Wales,” said Brad Davies, Survey and Consents Manager at Celtic Sea Power. “A key element of this pioneer project was to establish a consenting pathway that involved engagement with regulators and a wide range of stakeholders. CSP were delighted to play a role here to help strengthen the case for investment in South Wales’s clean energy future.”
The project directly supports UK Government hydrogen production targets, provides certainty for national pipeline initiatives like Project Union and HyLine Cymru, and aligns with the ambitions of the Milford Haven Future Energy Cluster and Celtic Freeport.
By advancing Dolphyn Hydrogen technology, developing new consenting processes for accelerated deployment, and investigating wave energy co-location with hydrogen in the PDZ, the project has delivered an integrated solution linking offshore generation with onshore hydrogen distribution.
The MH:HK project was supported by Innovate UK as part of their Launchpad: Net Zero Industry South West Wales program, alongside co-funding through the Swansea Bay City Deal’s Pembroke Dock Marine programme. For more information, visit: www.milfordhavenhydrogenkingdom.com
