Company lists · Data refreshed September 2026
Top 25 Hydrogen electrolysis companies based in the United Kingdom
RevenueBase identified 73 company matches for hydrogen electrolysis companies associated with the United Kingdom as of September 2026 and tracks 1,754 professional contacts across them, including 701 with verified work emails. London is the largest hub.
This list covers company matches for hydrogen electrolysis companies associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest hydrogen electrolysis companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 285 contacts → | ||||
Exact match “ITM Power was founded in and ITM Power plc was admitted to the AIM market of the London Stock Exchange in 2004.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 149 contacts → | ||||
Exact match “AFC Energy is the leading provider of Hydrogen fuel cell technology to generate clean off-grid energy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 137 contacts → | ||||
Exact match “GeoPura has a totally zero emissions answer to how we’re going to generate and distribute the vast amount of energy required to decarbonise our global economies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 96 contacts → | ||||
Exact match “HiiROC is a technology company established in 2019 to develop and commercialise its plasma torch technology in the production of hydrogen from biomethane, flare gas and natural…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 50 contacts → | ||||
Exact match “For too long, hydrogen was held back.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 39 contacts → | ||||
Exact match “The world's first high pressure, ultra-efficient electrolyser for the lowest cost of pressurised green hydrogen.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 33 contacts → | ||||
Exact match “Ryze Power provides complete solutions in the alternative fuels space as sectors transition towards net zero.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 30 contacts → | ||||
Exact match “Based in Scotland, Logan is a designer, supplier, and integrator of complete hydrogen production, refuelling, compression, storage, dispensing and fuel cell solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 25 contacts → | ||||
Exact match “Hygen is a leading developer, producer and asset owner of low-carbon hydrogen production facilities in the UK and Europe, focusing on the decarbonisation of mobility…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 24 contacts → | ||||
Exact match “Green Cat Hydrogen develops green hydrogen projects.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 16 contacts → | ||||
Exact match “At N-Gen, we’re helping our customers to lead the race towards decarbonisation with low carbon hydrogen.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 14 contacts → | ||||
Exact match “Oort Energy is a manufacturer of green hydrogen systems for energy storage and clean fuel.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 13 contacts → | ||||
Exact match “Our goal is to produce affordable, carbon-negative hydrogen.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 10 contacts → | ||||
Exact match “PlusZero Ltd is Making Hydrogen Happen - Our PlusZero Energy brand produces green hydrogen, with our first production site in the Outer Hebrides, the most rapidly scalable…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 9 contacts → | ||||
Exact match “Clyde Hydrogen System’s breakthrough decoupled electrolysis technology delivers high pressure green hydrogen at scale and at low cost.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 9 contacts → | ||||
Exact match “HyWaves' goal is to increase locally produced hydrogen by simplifying solar to hydrogen power electronics and enhancing electrolysers to increase green hydrogen production.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 7 contacts → | ||||
Exact match “Founded in 2022, H2Au is leading the way in natural hydrogen exploration and production (E&P), combining proven exploration techniques and unique play-based models to identify…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 6 contacts → | ||||
Exact match “Latent Drive develop and commercialise innovative green hydrogen technologies aimed at mass production and scalability.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 6 contacts → | ||||
Exact match “Humble Hydrogen is a leading hydrogen solution provider and manufacturer.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 6 contacts → | ||||
Exact match “The energy industry's leading source for hydrogen news and analysis.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 5 contacts → | ||||
Exact match “WD HydroTech has developed a novel hydrogen generation and compression platform designed specifically for distributed industrial and mobility applications.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 5 contacts → | ||||
Exact match “Meld Energy is a large scale UK green hydrogen developer with ambitions to produce 10%+ of country's electrolytic hydrogen powered by renewable energy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 3 contacts → | ||||
Exact match “Aquature is developing a bioelectrochemical technology to harness the energy of wastewaters.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 3 contacts → | ||||
Exact match “Founded on the need to move away from fossil fuels and closer to Net-Zero, the primary purpose of advanced energy management is to produce green hydrogen for the transport…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 3 contacts → | ||||
Exact match “Founded in 2020, HydroGenesis are a UK-based company building the leading position in natural hydrogen acreage and progressing exploration throughout the African continent.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “hydrogen electrolysis companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 73 hydrogen electrolysis companies based in the United Kingdom
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Hydrogen electrolysis companies based in the United Kingdom at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 73 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United Kingdom whose business descriptions match “hydrogen electrolysis companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 701 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “hydrogen electrolysis companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many hydrogen electrolysis companies are there based in the United Kingdom?
RevenueBase identified 73 company matches for hydrogen electrolysis companies associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
ITM Power tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most hydrogen electrolysis companies?
London leads with 16 company records, followed by Edinburgh (5) and Cardiff (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 701 professional contacts with verified work emails tracked across these 73 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 73 hydrogen electrolysis companies based in the United Kingdom. Start with a free account, no credit card.
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Hydrogen electrolysis companies by geography
- Hydrogen electrolysis companies based in Australia
- Hydrogen electrolysis companies based in Canada
- Hydrogen electrolysis companies based in France
- Hydrogen electrolysis companies based in Germany
- Hydrogen electrolysis companies based in India
- Hydrogen electrolysis companies based in the Netherlands
- Hydrogen electrolysis companies based in Spain
- Hydrogen electrolysis companies based in the United States
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
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- Hydrogen electrolysis companies based in Australia
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- Hydrogen electrolysis companies based in France
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- Hydrogen electrolysis companies based in India
- Hydrogen electrolysis companies based in the Netherlands
Company intelligence · public preview
Top 25 hydrogen electrolysis companies based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 73 matching company records for hydrogen electrolysis companies based in the United Kingdom, with 1,754 tracked contacts and 701 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 hydrogen electrolysis companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  ITM Poweritm-power.comHQ: Sheffield, United KingdomReported employees: 201-500 | Sheffield, United Kingdom | 201-500 | Exact match | 285 contacts → |
“ITM Power was founded in and ITM Power plc was admitted to the AIM market of the London Stock Exchange in 2004.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | AFC Energyafcenergy.com HQ: Cranleigh, United KingdomReported employees: 51-200 | Cranleigh, United Kingdom | 51-200 | Exact match | 149 contacts → |
“AFC Energy is the leading provider of Hydrogen fuel cell technology to generate clean off-grid energy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Geopurageopura.comHQ: Newcastle, United KingdomReported employees: 51-200 | Newcastle, United Kingdom | 51-200 | Exact match | 137 contacts → |
“GeoPura has a totally zero emissions answer to how we’re going to generate and distribute the vast amount of energy required to decarbonise our global economies.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Hiirochiiroc.comHQ: Hull, United KingdomReported employees: 51-200 | Hull, United Kingdom | 51-200 | Exact match | 96 contacts → |
“HiiROC is a technology company established in 2019 to develop and commercialise its plasma torch technology in the production of hydrogen from biomethane, flare gas and natural…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Clean Power Hydrogen PLCcph2.comHQ: Doncaster, United KingdomReported employees: 51-200 | Doncaster, United Kingdom | 51-200 | Exact match | 50 contacts → |
“For too long, hydrogen was held back.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Supercriticalsupercritical.solutions HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 39 contacts → |
“The world's first high pressure, ultra-efficient electrolyser for the lowest cost of pressurised green hydrogen.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Ryze Powerryzepower.comHQ: Oxford, United KingdomReported employees: 51-200 | Oxford, United Kingdom | 51-200 | Exact match | 33 contacts → |
“Ryze Power provides complete solutions in the alternative fuels space as sectors transition towards net zero.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  LOGANloganenergy.comHQ: Edinburgh, United KingdomReported employees: 11-50 | Edinburgh, United Kingdom | 11-50 | Exact match | 30 contacts → |
“Based in Scotland, Logan is a designer, supplier, and integrator of complete hydrogen production, refuelling, compression, storage, dispensing and fuel cell solutions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Hygen Energyhygenenergy.comHQ: Oxford, United KingdomReported employees: 11-50 | Oxford, United Kingdom | 11-50 | Exact match | 25 contacts → |
“Hygen is a leading developer, producer and asset owner of low-carbon hydrogen production facilities in the UK and Europe, focusing on the decarbonisation of mobility…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Green CAT Hydrogen LTDgchydrogen.co.ukHQ: Edinburgh, United KingdomReported employees: 11-50 | Edinburgh, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Green Cat Hydrogen develops green hydrogen projects.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  N-Genn-genenergy.comHQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 16 contacts → |
“At N-Gen, we’re helping our customers to lead the race towards decarbonisation with low carbon hydrogen.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Oort Energyoortenergy.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Oort Energy is a manufacturer of green hydrogen systems for energy storage and clean fuel.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Wild Hydrogenwildhydrogen.com HQ: Hardwicke, United KingdomReported employees: 1-10 | Hardwicke, United Kingdom | 1-10 | Exact match | 13 contacts → |
“Our goal is to produce affordable, carbon-negative hydrogen.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Pluszero LTDpluszero.co.uk HQ: Edinburgh, United KingdomReported employees: 1-10 | Edinburgh, United Kingdom | 1-10 | Exact match | 10 contacts → |
“PlusZero Ltd is Making Hydrogen Happen - Our PlusZero Energy brand produces green hydrogen, with our first production site in the Outer Hebrides, the most rapidly scalable…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Clyde Hydrogen Systemsclydehydrogen.com HQ: Glasgow, United KingdomReported employees: 1-10 | Glasgow, United Kingdom | 1-10 | Exact match | 9 contacts → |
“Clyde Hydrogen System’s breakthrough decoupled electrolysis technology delivers high pressure green hydrogen at scale and at low cost.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Hywaveshywaves.com HQ: Cranfield University, United KingdomReported employees: 1-10 | Cranfield University, United Kingdom | 1-10 | Exact match | 9 contacts → |
“HyWaves' goal is to increase locally produced hydrogen by simplifying solar to hydrogen power electronics and enhancing electrolysers to increase green hydrogen production.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  h2au.coh2au.coHQ: Epsom, United KingdomReported employees: 1-10 | Epsom, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Founded in 2022, H2Au is leading the way in natural hydrogen exploration and production (E&P), combining proven exploration techniques and unique play-based models to identify…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Latent Drivelatentdrive.co.uk HQ: Winfrith Newburgh, United KingdomReported employees: 1-10 | Winfrith Newburgh, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Latent Drive develop and commercialise innovative green hydrogen technologies aimed at mass production and scalability.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Humble Hydrogen LTDhumblehydrogen.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 6 contacts → |
“Humble Hydrogen is a leading hydrogen solution provider and manufacturer.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Hydrogen Insighthydrogeninsight.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“The energy industry's leading source for hydrogen news and analysis.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | WD Hydrotechwdhydrotech.com HQ: Sheffield, United KingdomReported employees: 1-10 | Sheffield, United Kingdom | 1-10 | Exact match | 5 contacts → |
“WD HydroTech has developed a novel hydrogen generation and compression platform designed specifically for distributed industrial and mobility applications.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Meld Energymeld.energyHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Meld Energy is a large scale UK green hydrogen developer with ambitions to produce 10%+ of country's electrolytic hydrogen powered by renewable energy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Aquature LTDaquature.co.uk HQ: Ingatestone, United KingdomReported employees: 1-10 | Ingatestone, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Aquature is developing a bioelectrochemical technology to harness the energy of wastewaters.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Advanced Energy Management UK LTDadvancedenergyuk.comHQ: Greenwich, United KingdomReported employees: 1-10 | Greenwich, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Founded on the need to move away from fossil fuels and closer to Net-Zero, the primary purpose of advanced energy management is to produce green hydrogen for the transport…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Hydrogenesishydrogenesis.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Founded in 2020, HydroGenesis are a UK-based company building the leading position in natural hydrogen acreage and progressing exploration throughout the African continent.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 73 company matches
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Hydrogen electrolysis companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
73 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 73 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for hydrogen electrolysis companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many hydrogen electrolysis companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 73 matching company records, 1,754 tracked contacts and 701 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Hydrogen electrolysis companies by geography
- Hydrogen electrolysis companies based in Australia
- Hydrogen electrolysis companies based in Canada
- Hydrogen electrolysis companies based in France
- Hydrogen electrolysis companies based in Germany
- Hydrogen electrolysis companies based in India
- Hydrogen electrolysis companies based in the Netherlands
- Hydrogen electrolysis companies based in Spain
- Hydrogen electrolysis companies based in the United States
Cite this list
RevenueBase Data Team. Top 25 hydrogen electrolysis companies based in the United Kingdom. Snapshot: September 20, 2026. https://revenuebase.ai/companies/hydrogen-electrolysis-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Hydrogen electrolysis companies based in Australia
- Hydrogen electrolysis companies based in Canada
- Hydrogen electrolysis companies based in France
- Hydrogen electrolysis companies based in Germany
- Hydrogen electrolysis companies based in India
- Hydrogen electrolysis companies based in the Netherlands
Company intelligence · public preview
Top 25 hydrogen electrolysis companies based in the United Kingdom
RevenueBase records 73 matching company records for hydrogen electrolysis companies based in the United Kingdom, with 1,754 tracked contacts and 701 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 hydrogen electrolysis companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | ITM Poweritm-power.com HQ: Sheffield, United KingdomReported employees: 201-500 | Sheffield, United Kingdom | 201-500 | Exact match | 285 contacts → |
“ITM Power was founded in and ITM Power plc was admitted to the AIM market of the London Stock Exchange in 2004.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | AFC Energyafcenergy.com HQ: Cranleigh, United KingdomReported employees: 51-200 | Cranleigh, United Kingdom | 51-200 | Exact match | 149 contacts → |
“AFC Energy is the leading provider of Hydrogen fuel cell technology to generate clean off-grid energy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Geopurageopura.com HQ: Newcastle, United KingdomReported employees: 51-200 | Newcastle, United Kingdom | 51-200 | Exact match | 137 contacts → |
“GeoPura has a totally zero emissions answer to how we’re going to generate and distribute the vast amount of energy required to decarbonise our global economies.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Hiirochiiroc.com HQ: Hull, United KingdomReported employees: 51-200 | Hull, United Kingdom | 51-200 | Exact match | 96 contacts → |
“HiiROC is a technology company established in 2019 to develop and commercialise its plasma torch technology in the production of hydrogen from biomethane, flare gas and natural…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Clean Power Hydrogen PLCcph2.com HQ: Doncaster, United KingdomReported employees: 51-200 | Doncaster, United Kingdom | 51-200 | Exact match | 50 contacts → |
“For too long, hydrogen was held back.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Supercriticalsupercritical.solutions HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 39 contacts → |
“The world's first high pressure, ultra-efficient electrolyser for the lowest cost of pressurised green hydrogen.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Ryze Powerryzepower.com HQ: Oxford, United KingdomReported employees: 51-200 | Oxford, United Kingdom | 51-200 | Exact match | 33 contacts → |
“Ryze Power provides complete solutions in the alternative fuels space as sectors transition towards net zero.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | LOGANloganenergy.com HQ: Edinburgh, United KingdomReported employees: 11-50 | Edinburgh, United Kingdom | 11-50 | Exact match | 30 contacts → |
“Based in Scotland, Logan is a designer, supplier, and integrator of complete hydrogen production, refuelling, compression, storage, dispensing and fuel cell solutions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Hygen Energyhygenenergy.com HQ: Oxford, United KingdomReported employees: 11-50 | Oxford, United Kingdom | 11-50 | Exact match | 25 contacts → |
“Hygen is a leading developer, producer and asset owner of low-carbon hydrogen production facilities in the UK and Europe, focusing on the decarbonisation of mobility…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Green CAT Hydrogen LTDgchydrogen.co.uk HQ: Edinburgh, United KingdomReported employees: 11-50 | Edinburgh, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Green Cat Hydrogen develops green hydrogen projects.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | N-Genn-genenergy.com HQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 16 contacts → |
“At N-Gen, we’re helping our customers to lead the race towards decarbonisation with low carbon hydrogen.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Oort Energyoortenergy.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Oort Energy is a manufacturer of green hydrogen systems for energy storage and clean fuel.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Wild Hydrogenwildhydrogen.com HQ: Hardwicke, United KingdomReported employees: 1-10 | Hardwicke, United Kingdom | 1-10 | Exact match | 13 contacts → |
“Our goal is to produce affordable, carbon-negative hydrogen.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Pluszero LTDpluszero.co.uk HQ: Edinburgh, United KingdomReported employees: 1-10 | Edinburgh, United Kingdom | 1-10 | Exact match | 10 contacts → |
“PlusZero Ltd is Making Hydrogen Happen - Our PlusZero Energy brand produces green hydrogen, with our first production site in the Outer Hebrides, the most rapidly scalable…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Clyde Hydrogen Systemsclydehydrogen.com HQ: Glasgow, United KingdomReported employees: 1-10 | Glasgow, United Kingdom | 1-10 | Exact match | 9 contacts → |
“Clyde Hydrogen System’s breakthrough decoupled electrolysis technology delivers high pressure green hydrogen at scale and at low cost.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Hywaveshywaves.com HQ: Cranfield University, United KingdomReported employees: 1-10 | Cranfield University, United Kingdom | 1-10 | Exact match | 9 contacts → |
“HyWaves' goal is to increase locally produced hydrogen by simplifying solar to hydrogen power electronics and enhancing electrolysers to increase green hydrogen production.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | h2au.coh2au.co HQ: Epsom, United KingdomReported employees: 1-10 | Epsom, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Founded in 2022, H2Au is leading the way in natural hydrogen exploration and production (E&P), combining proven exploration techniques and unique play-based models to identify…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Latent Drivelatentdrive.co.uk HQ: Winfrith Newburgh, United KingdomReported employees: 1-10 | Winfrith Newburgh, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Latent Drive develop and commercialise innovative green hydrogen technologies aimed at mass production and scalability.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Humble Hydrogen LTDhumblehydrogen.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 6 contacts → |
“Humble Hydrogen is a leading hydrogen solution provider and manufacturer.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Hydrogen Insighthydrogeninsight.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“The energy industry's leading source for hydrogen news and analysis.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | WD Hydrotechwdhydrotech.com HQ: Sheffield, United KingdomReported employees: 1-10 | Sheffield, United Kingdom | 1-10 | Exact match | 5 contacts → |
“WD HydroTech has developed a novel hydrogen generation and compression platform designed specifically for distributed industrial and mobility applications.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Meld Energymeld.energy HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Meld Energy is a large scale UK green hydrogen developer with ambitions to produce 10%+ of country's electrolytic hydrogen powered by renewable energy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Aquature LTDaquature.co.uk HQ: Ingatestone, United KingdomReported employees: 1-10 | Ingatestone, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Aquature is developing a bioelectrochemical technology to harness the energy of wastewaters.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Advanced Energy Management UK LTDadvancedenergyuk.com HQ: Greenwich, United KingdomReported employees: 1-10 | Greenwich, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Founded on the need to move away from fossil fuels and closer to Net-Zero, the primary purpose of advanced energy management is to produce green hydrogen for the transport…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Hydrogenesishydrogenesis.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Founded in 2020, HydroGenesis are a UK-based company building the leading position in natural hydrogen acreage and progressing exploration throughout the African continent.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 73 company matches
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Hydrogen electrolysis companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
73 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 73 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for hydrogen electrolysis companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many hydrogen electrolysis companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 73 matching company records, 1,754 tracked contacts and 701 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Hydrogen electrolysis companies by geography
- Hydrogen electrolysis companies based in Australia
- Hydrogen electrolysis companies based in Canada
- Hydrogen electrolysis companies based in France
- Hydrogen electrolysis companies based in Germany
- Hydrogen electrolysis companies based in India
- Hydrogen electrolysis companies based in the Netherlands
- Hydrogen electrolysis companies based in Spain
- Hydrogen electrolysis companies based in the United States
Cite this list
RevenueBase Data Team. Top 25 hydrogen electrolysis companies based in the United Kingdom. Snapshot: September 20, 2026. https://revenuebase.ai/companies/hydrogen-electrolysis-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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