Last updated: 15 Mar 2026 · 403 companies indexed
Electrolyzer Manufacturers — United Kingdom
403 electrolyzer companies in United Kingdom. European electrolyzer capacity needs to scale from ~1 GW installed (2024) to 100 GW by 2030 per REPowerEU targets. Three dominant technologies compete: PEM (fast response, high cost), alkaline (mature, lower cost), and SOEC (highest efficiency, least mature). Stack costs dropped 40% since 2020 but remain at €500-1,200/kW.
Companies — Showing 1–50 of 403Page 1 of 9
Company
Schlumberger Cambridge Research LimitedEU
London, GB·GB743869490
Schlumberger Cambridge Research Limited — involved in Horizon Europe programme targeting hydrogen technology or infrastructure. London.
Twi LimitedEU
Cambridge, GB·GB700170889
Twi Limited (Cambridge) — research or industrial partner in European hydrogen supply chain R&D. LH2CRAFT project.
Lloyd's Register EmeaEU
London, GB·GB821176647
EU Horizon Europe participant working on electrolysis, hydrogen infrastructure, or power-to-X technology. Based in London.
Ricardo Consulting Engineers LimitedEU
Shoreham By Sea, GB·GB272643062
Ricardo Consulting Engineers Limited participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: Shoreham By Sea.
Environmental Resources Management LimitedEU
London, GB·GB404618080
Environmental Resources Management Limited participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: London.
Npl Management LimitedEU
Middlesex, GB·GB200429166
Horizon Europe consortium member focused on hydrogen. Based in Middlesex. Industrial or research partner.
Rolls-royce PLCEU
London, GB·GB345886022
Rolls-royce PLC participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: London.
United Kingdom National Nuclear Laboratory LimitedEU
Warrington, GB·GB849770866
Organization contributing to European hydrogen economy R&D, based in Warrington. Part of the GEMINI 4.0 consortium.
Reaction Engines LimitedEU
Abingdon, GB·GB567411043
Reaction Engines Limited — involved in Horizon Europe programme targeting hydrogen technology or infrastructure. Abingdon. SME-classified.
Element Energy LimitedEU
Cambridge, GB·GB240246933
Element Energy Limited (Cambridge) — small/medium enterprise in European hydrogen supply chain R&D. H2Accelerate TRUCKS project.
United Kingdom Research and InnovationEU
Swindon, GB·GB287461957
Horizon Europe consortium member focused on hydrogen. Based in Swindon. Industrial or research partner.
Health and Safety ExecutiveEU
Bootle Merseyside, GB·GB888810177
Horizon Europe consortium member focused on hydrogen. Based in Bootle Merseyside. Industrial or research partner.
United Kingdom Atomic Energy AuthorityEU
Abingdon, GB·GB570101391
United Kingdom Atomic Energy Authority participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: Abingdon.
Goodrich Control SystemsEU
Solihull West Midlands, GB·GB792426115
Goodrich Control Systems in Solihull West Midlands — active in EU-funded hydrogen, electrolysis, or fuel cell research (SWITCH project). Research partner.
Unilever U.k. Central Resources LimitedEU
London, GB·GB243359756
Unilever U.k. Central Resources Limited participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: London.
Airbus Operations LimitedEU
Bristol, GB·GB762702827
Airbus Operations Limited participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: Bristol.
Ansys Uk LimitedEU
Sheffield, GB·GB471087544
Ansys Uk Limited — involved in Horizon Europe programme targeting hydrogen technology or infrastructure. Sheffield.
Siemens Process Systems Engineering LimitedEU
London, GB·GB690775984
Siemens Process Systems Engineering Limited — involved in Horizon Europe programme targeting hydrogen technology or infrastructure. London. SME-classified.
Crompton Technology Group LtdEU
Banbury, GB·GB765335514
Horizon Europe consortium member focused on hydrogen. Based in Banbury. Industrial or research partner.
the European Marine Energy Centre LimitedEU
Stromness, GB·GB828855090
Horizon Europe consortium member focused on hydrogen. Based in Stromness. SME participant.
Practical ActionEU
Rugby, GB·GB880992476
Organization contributing to European hydrogen economy R&D, based in Rugby. Part of the SUNNY consortium.
Offshore Renewable Energy CatapultEU
Blyth Northumberland, GB·GB888954046
SME contributing to European hydrogen economy R&D, based in Blyth Northumberland. Part of the WindConnect consortium.
Hiden Isochema LtdEU
Warrington, GB·GB785756272
Part of EU-funded hydrogen research. Hiden Isochema Ltd contributes to projects on electrolyzers, fuel cells, or H2 logistics. Warrington.
Chesterfield Special Cylinders LimitedEU
Sheffield, GB·GB843120463
Chesterfield Special Cylinders Limited in Sheffield — active in EU-funded hydrogen, electrolysis, or fuel cell research (SH2AMROCK project). Research partner.
Trelleborg Sealing Solutions Uk LimitedEU
Tewkesbury, GB·GB918415616
Part of EU-funded hydrogen research. Trelleborg Sealing Solutions Uk Limited contributes to projects on electrolyzers, fuel cells, or H2 logistics. Tewkesbury.
Inductosense LtdEU
Bristol, GB·GB227006245
Inductosense Ltd in Bristol — active in EU-funded hydrogen, electrolysis, or fuel cell research (USES2 project). Research partner.
O.S. Energy (UK) LtdEU
Newcastle Upon Tyne, GB·GB366907950
Part of EU-funded hydrogen research. O.S. Energy (UK) Ltd contributes to projects on electrolyzers, fuel cells, or H2 logistics. Newcastle Upon Tyne.
Stone Marine Propulsion LimitedEU
Dorchester, GB·GB320081808
Stone Marine Propulsion Limited in Dorchester — active in EU-funded hydrogen, electrolysis, or fuel cell research (RESHIP project). Research partner.
Hssmi Trading LimitedEU
London, GB·GB204310178
Part of EU-funded hydrogen research. Hssmi Trading Limited contributes to projects on electrolyzers, fuel cells, or H2 logistics. London.
Itp Aero Uk LtdEU
Whetstone, GB·GB397741151
Itp Aero Uk Ltd in Whetstone — active in EU-funded hydrogen, electrolysis, or fuel cell research (HEAVEN project). Research partner.
Easyjet Airline Company LimitedEU
Luton Bedfordshire, GB·GB745360825
Easyjet Airline Company Limited in Luton Bedfordshire — active in EU-funded hydrogen, electrolysis, or fuel cell research (HEAVEN project). Research partner.
National Gas Transmission PLCEU
Warwick, GB·GB426121531
National Gas Transmission PLC participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: Warwick.
Hs Marston Aerospace LimitedEU
Wolverhampton, GB·GB731036179
Hs Marston Aerospace Limited participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: Wolverhampton.
Liberty Powder MetalsEU
London, GB·GB315712131
Liberty Powder Metals participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: London.
Centrax LimitedEU
Newton Abbot, GB·GB141534202
Part of EU-funded hydrogen research. Centrax Limited contributes to projects on electrolyzers, fuel cells, or H2 logistics. Newton Abbot.
Cyanocapture LtdEU
Oxford, GB·GB424390900
Cyanocapture Ltd participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: Oxford.
Cummins LtdEU
London, GB·GB299223818
Cummins Ltd in London — active in EU-funded hydrogen, electrolysis, or fuel cell research (H2UpScale project). Research partner.
Short Brothers PLCEU
Belfast, GB·GB251889920
Short Brothers PLC in Belfast — active in EU-funded hydrogen, electrolysis, or fuel cell research (CAVENDISH project). Research partner.
Rina Tech Uk LtdEU
Leatherhead Surrey, GB·GB100202606
Rina Tech Uk Ltd participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: Leatherhead Surrey.
Oort Energy LtdEU
Petherwin Gate, GB·GB405441332
Oort Energy Ltd participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: Petherwin Gate.
Schlumberger Oilfield Uk PLCEU
Crawley West Sussex, GB·GB743869490
Schlumberger Oilfield Uk PLC participates in EU-funded research on hydrogen production, storage, transport, or fuel cells. Location: Crawley West Sussex.
CFD Direct LimitedEU
Reading, GB·GB207509225
CFD Direct Limited in Reading — active in EU-funded hydrogen, electrolysis, or fuel cell research (ENCODING project). Research partner.
Thermal Ceramics Uk LtdEU
Bromborough, GB·GB595950779
Thermal Ceramics Uk Ltd in Bromborough — active in EU-funded hydrogen, electrolysis, or fuel cell research (HyInHeat project). Research partner.
Universal Matter GBR Ltd (formerly Applied Graphene Materials Ltd)EU
Redcar, GB·GB446190687
Part of EU-funded hydrogen research. Universal Matter GBR Ltd (formerly Applied Graphene Materials Ltd) contributes to projects on electrolyzers, fuel cells, or H2 logistics. Redcar.
Immaterial LtdEU
Cambridge, GB·GB252758976
SME contributing to European hydrogen economy R&D, based in Cambridge. Part of the MOST-H2 consortium.
Hive Hydrogen LimitedEU
Crowthorne, GB·GB405039038
Hive Hydrogen Limited (Crowthorne) — small/medium enterprise in European hydrogen supply chain R&D. SH2AMROCK project.
Msc Cruise Management (uk) LimitedEU
London, GB·GB222791513
Msc Cruise Management (uk) Limited (London) — research or industrial partner in European hydrogen supply chain R&D. HELENUS project.
Opencfd LimitedEU
Bracknell Berkshire, GB·GB855981474
Horizon Europe consortium member focused on hydrogen. Based in Bracknell Berkshire. Industrial or research partner.
Shell International Trading and Shipping Company LtdEU
London, GB·GB235763255002
Organization contributing to European hydrogen economy R&D, based in London. Part of the HyEkoTank consortium.
Honeywell Uk LimitedEU
Bracknell Berks, GB·GB798032890
Horizon Europe consortium member focused on hydrogen. Based in Bracknell Berks. Industrial or research partner.