Company lists · Data refreshed September 2026
Top 25 Hydrogen electrolysis companies worldwide
RevenueBase identified 992 company matches for hydrogen electrolysis companies worldwide as of September 2026 and tracks 13,902 professional contacts across them, including 5,430 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for hydrogen electrolysis companies worldwide, 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. Country and city lists for hydrogen electrolysis companies follow the table.
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 worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 691 contacts → | ||||
Exact match “thyssenkrupp nucera offers world-leading technologies for high-efficiency electrolysis plants.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 547 contacts → | ||||
Exact match “Ohmium's mission is to accelerate the adoption of green hydrogen to decarbonize hard-to-abate sectors and enable a low-carbon future.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 427 contacts → | ||||
Exact match “Established in 2010 and based in Dresden, Germany, Sunfire is a world-leading industrial electrolysis company with two differentiated technologies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 378 contacts → | ||||
Exact match “As a technological pioneer, Quest One develops and produces innovative PEM electrolyzers and electrolyzer stacks.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 346 contacts → | ||||
Exact match “Electric Hydrogen manufactures, delivers and commissions the world’s most powerful electrolyzers to make clean hydrogen projects economically viable today.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 327 contacts → | ||||
Exact match “Nel has a history tracing back to 1927 and is today a leading pure play hydrogen electrolyser technology company with a global presence.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 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 | |||||
| 8 | 260 contacts → | ||||
Exact match “NEOM Green Hydrogen Company (NGHC) is on a mission to make a carbon-free, climate-safe future a reality.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 210 contacts → | ||||
Exact match “Lhyfe is a certain idea of the world, a world in which we can meet our energy needs by being part of the natural ecosystem rather than trying to dominate it.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 179 contacts → | ||||
Exact match “ELOGEN is a technology provider specialized in the design, the manufacturing and the maintenance of Hydrogen generators using water electrolysis, based on Proton Exchange Membrane…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 168 contacts → | ||||
Exact match “Enapter develops and manufactures AEM Electrolysers – disruptive devices producing green hydrogen to replace fossil fuels.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 152 contacts → | ||||
Exact match “Serving critical infrastructure markets, RIX Industries is a global leader in the design, development, and manufacturing of hydrogen and gas generation systems, precision high…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 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 | |||||
| 14 | 145 contacts → | ||||
Exact match “As a leading "pure player" McPhy designs and manufactures a range of hydrogen production and valorization equipment, including electrolyzers built on robust and proven technology…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 144 contacts → | ||||
Exact match “Today, and for decades, global warming is a reality.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 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 | |||||
| 17 | 131 contacts → | ||||
Exact match “AM Green is indirectly wholly owned and controlled by the founders of Hyderabad-based Greenko Group - Anil Chalamalasetty and Mahesh Kolli.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 130 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 127 contacts → | ||||
Exact match “Hynamics est la filiale 100% du groupe EDF qui produit et commercialise de l'hydrogène bas carbone; elle adresse les deux marchés les plus émetteurs de CO2 que sont l’industrie et…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 127 contacts → | ||||
Exact match “As of December 2021, Frames is part of Plug Power.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 123 contacts → | ||||
Exact match “HDF Energy is a leading global player in the hydrogen industry, dedicated to developing large-scale hydrogen infrastructure and advanced multi-megawatt fuel cell technology.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 113 contacts → | ||||
Exact match “Our mission is to accelerate the world’s shift away from fossil fuels to green hydrogen by delivering the world’s best electrolyser.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 105 contacts → | ||||
Exact match “H2Pro is on a mission to enable affordable green hydrogen at scale by providing the world with the leading next generation electrolyzer.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 99 contacts → | ||||
Exact match “About the company H2APEX Group SCA: H2APEX Group SCA is a listed holding company and the parent company of H2APEX Group, which in its core business develops, builds and sells or…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 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 | |||||
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 992 hydrogen electrolysis companies worldwide
See the full list, filter by size, metro and specialty, and access 5,430 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Hydrogen electrolysis companies worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for hydrogen electrolysis companies are linked below.
- What qualifies
- Company records worldwide 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. 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 5,430 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.
Hydrogen electrolysis companies by location
9 lists · largest firstEvery Hydrogen electrolysis companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Hydrogen electrolysis companies based in the United States156
- Hydrogen electrolysis companies based in Germany80
- Hydrogen electrolysis companies based in the United Kingdom73
- Hydrogen electrolysis companies based in Australia47
- Hydrogen electrolysis companies based in France46
- Hydrogen electrolysis companies based in India46
- Hydrogen electrolysis companies based in Spain37
- Hydrogen electrolysis companies based in the Netherlands37
- Hydrogen electrolysis companies based in Canada36
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 worldwide?
RevenueBase identified 992 company matches for hydrogen electrolysis companies worldwide 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?
Thyssenkrupp Nucera tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most hydrogen electrolysis companies?
The United States leads with 156 companies, followed by Germany (80) and the United Kingdom (73). Every hydrogen electrolysis companies list by country and city is linked on this page.
Which city has the most hydrogen electrolysis companies?
London leads with 16 company records, followed by Singapore (11) and Madrid (10).
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 5,430 professional contacts with verified work emails tracked across these 992 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 992 hydrogen electrolysis companies worldwide. Start with a free account, no credit card.
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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
Company intelligence · public preview
Top 25 hydrogen electrolysis companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 992 matching company records for hydrogen electrolysis companies worldwide, with 13,902 tracked contacts and 5,430 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 worldwide
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 |  Thyssenkrupp Nucerathyssenkrupp-nucera.comHQ: Dortmund, GermanyReported employees: 1,001-5,000 | Dortmund, Germany | 1,001-5,000 | Exact match | 691 contacts → |
“thyssenkrupp nucera offers world-leading technologies for high-efficiency electrolysis plants.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Ohmiumohmium.com HQ: Fremont, United StatesReported employees: 501-1,000 | Fremont, United States | 501-1,000 | Exact match | 547 contacts → |
“Ohmium's mission is to accelerate the adoption of green hydrogen to decarbonize hard-to-abate sectors and enable a low-carbon future.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Sunfiresunfire.deHQ: Dresden, GermanyReported employees: 501-1,000 | Dresden, Germany | 501-1,000 | Exact match | 427 contacts → |
“Established in 2010 and based in Dresden, Germany, Sunfire is a world-leading industrial electrolysis company with two differentiated technologies.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Quest ONEquestone.comHQ: Augsburg, GermanyReported employees: 501-1,000 | Augsburg, Germany | 501-1,000 | Exact match | 378 contacts → |
“As a technological pioneer, Quest One develops and produces innovative PEM electrolyzers and electrolyzer stacks.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Electric Hydrogeneh2.comHQ: Devens, MA, United StatesReported employees: 201-500 | Devens, MA, United States | 201-500 | Exact match | 346 contacts → |
“Electric Hydrogen manufactures, delivers and commissions the world’s most powerful electrolyzers to make clean hydrogen projects economically viable today.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  NEL Hydrogennelhydrogen.comHQ: Oslo, NorwayReported employees: 201-500 | Oslo, Norway | 201-500 | Exact match | 327 contacts → |
“Nel has a history tracing back to 1927 and is today a leading pure play hydrogen electrolyser technology company with a global presence.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  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. | |||||
| 8 | Neom Green Hydrogen Companynghc.com HQ: Tabuk, Saudi ArabiaReported employees: 51-200 | Tabuk, Saudi Arabia | 51-200 | Exact match | 260 contacts → |
“NEOM Green Hydrogen Company (NGHC) is on a mission to make a carbon-free, climate-safe future a reality.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  LHYFElhyfe.comHQ: Nantes, FranceReported employees: 51-200 | Nantes, France | 51-200 | Exact match | 210 contacts → |
“Lhyfe is a certain idea of the world, a world in which we can meet our energy needs by being part of the natural ecosystem rather than trying to dominate it.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Elogenelogenh2.comHQ: Les Ulis, FranceReported employees: 51-200 | Les Ulis, France | 51-200 | Exact match | 179 contacts → |
“ELOGEN is a technology provider specialized in the design, the manufacturing and the maintenance of Hydrogen generators using water electrolysis, based on Proton Exchange Membrane…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Enapterenapter.comHQ: Saerbeck, ItalyReported employees: 201-500 | Saerbeck, Italy | 201-500 | Exact match | 168 contacts → |
“Enapter develops and manufactures AEM Electrolysers – disruptive devices producing green hydrogen to replace fossil fuels.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  RIX Industriesrixindustries.comHQ: Benicia, CA, United StatesReported employees: 51-200 | Benicia, CA, United States | 51-200 | Exact match | 152 contacts → |
“Serving critical infrastructure markets, RIX Industries is a global leader in the design, development, and manufacturing of hydrogen and gas generation systems, precision high…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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. | |||||
| 14 |  MCPHYmcphy.comHQ: Foussemagne, FranceReported employees: 201-500 | Foussemagne, France | 201-500 | Exact match | 145 contacts → |
“As a leading "pure player" McPhy designs and manufactures a range of hydrogen production and valorization equipment, including electrolyzers built on robust and proven technology…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Genviagenvia.comHQ: Béziers, FranceReported employees: 51-200 | Béziers, France | 51-200 | Exact match | 144 contacts → |
“Today, and for decades, global warming is a reality.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  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. | |||||
| 17 | AM Green Groupamgreen.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 131 contacts → |
“AM Green is indirectly wholly owned and controlled by the founders of Hyderabad-based Greenko Group - Anil Chalamalasetty and Mahesh Kolli.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Oneh2, INConeh2.comHQ: Longview, NC, United StatesReported employees: 51-200 | Longview, NC, United States | 51-200 | Exact match | 130 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 |  Hynamicshynamics.comHQ: Paris, FranceReported employees: 51-200 | Paris, France | 51-200 | Exact match | 127 contacts → |
“Hynamics est la filiale 100% du groupe EDF qui produit et commercialise de l'hydrogène bas carbone; elle adresse les deux marchés les plus émetteurs de CO2 que sont l’industrie et…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Framesframes-group.comHQ: Alphen Aan Den Rijn, NetherlandsReported employees: 201-500 | Alphen Aan Den Rijn, Netherlands | 201-500 | Exact match | 127 contacts → |
“As of December 2021, Frames is part of Plug Power.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  HDF Energyhdf-energy.comHQ: Blanquefort, FranceReported employees: 51-200 | Blanquefort, France | 51-200 | Exact match | 123 contacts → |
“HDF Energy is a leading global player in the hydrogen industry, dedicated to developing large-scale hydrogen infrastructure and advanced multi-megawatt fuel cell technology.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Hysatahysata.comHQ: Wollongong, AustraliaReported employees: 11-50 | Wollongong, Australia | 11-50 | Exact match | 113 contacts → |
“Our mission is to accelerate the world’s shift away from fossil fuels to green hydrogen by delivering the world’s best electrolyser.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | H2proh2pro.co HQ: Caesarea, TürkiyeReported employees: 51-200 | Caesarea, Türkiye | 51-200 | Exact match | 105 contacts → |
“H2Pro is on a mission to enable affordable green hydrogen at scale by providing the world with the leading next generation electrolyzer.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  H2apexh2apex.comHQ: Rostock-laage, GermanyReported employees: 51-200 | Rostock-laage, Germany | 51-200 | Exact match | 99 contacts → |
“About the company H2APEX Group SCA: H2APEX Group SCA is a listed holding company and the parent company of H2APEX Group, which in its core business develops, builds and sells or…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  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. | |||||
Showing 25 of 992 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
990 records in the displayed employee bands.
2 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 992 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 ↗
Hydrogen electrolysis companies by location
9 lists · largest firstEvery Hydrogen electrolysis companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Hydrogen electrolysis companies based in the United States156
- Hydrogen electrolysis companies based in Germany80
- Hydrogen electrolysis companies based in the United Kingdom73
- Hydrogen electrolysis companies based in Australia47
- Hydrogen electrolysis companies based in France46
- Hydrogen electrolysis companies based in India46
- Hydrogen electrolysis companies based in Spain37
- Hydrogen electrolysis companies based in the Netherlands37
- Hydrogen electrolysis companies based in Canada36
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 worldwide?
The saved snapshot records 992 matching company records, 13,902 tracked contacts and 5,430 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
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Cite this list
RevenueBase Data Team. Top 25 hydrogen electrolysis companies worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/hydrogen-electrolysis-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 hydrogen electrolysis companies worldwide
RevenueBase records 992 matching company records for hydrogen electrolysis companies worldwide, with 13,902 tracked contacts and 5,430 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 worldwide
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 | Thyssenkrupp Nucerathyssenkrupp-nucera.com HQ: Dortmund, GermanyReported employees: 1,001-5,000 | Dortmund, Germany | 1,001-5,000 | Exact match | 691 contacts → |
“thyssenkrupp nucera offers world-leading technologies for high-efficiency electrolysis plants.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Ohmiumohmium.com HQ: Fremont, United StatesReported employees: 501-1,000 | Fremont, United States | 501-1,000 | Exact match | 547 contacts → |
“Ohmium's mission is to accelerate the adoption of green hydrogen to decarbonize hard-to-abate sectors and enable a low-carbon future.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Sunfiresunfire.de HQ: Dresden, GermanyReported employees: 501-1,000 | Dresden, Germany | 501-1,000 | Exact match | 427 contacts → |
“Established in 2010 and based in Dresden, Germany, Sunfire is a world-leading industrial electrolysis company with two differentiated technologies.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Quest ONEquestone.com HQ: Augsburg, GermanyReported employees: 501-1,000 | Augsburg, Germany | 501-1,000 | Exact match | 378 contacts → |
“As a technological pioneer, Quest One develops and produces innovative PEM electrolyzers and electrolyzer stacks.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Electric Hydrogeneh2.com HQ: Devens, MA, United StatesReported employees: 201-500 | Devens, MA, United States | 201-500 | Exact match | 346 contacts → |
“Electric Hydrogen manufactures, delivers and commissions the world’s most powerful electrolyzers to make clean hydrogen projects economically viable today.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | NEL Hydrogennelhydrogen.com HQ: Oslo, NorwayReported employees: 201-500 | Oslo, Norway | 201-500 | Exact match | 327 contacts → |
“Nel has a history tracing back to 1927 and is today a leading pure play hydrogen electrolyser technology company with a global presence.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | 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. | |||||
| 8 | Neom Green Hydrogen Companynghc.com HQ: Tabuk, Saudi ArabiaReported employees: 51-200 | Tabuk, Saudi Arabia | 51-200 | Exact match | 260 contacts → |
“NEOM Green Hydrogen Company (NGHC) is on a mission to make a carbon-free, climate-safe future a reality.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | LHYFElhyfe.com HQ: Nantes, FranceReported employees: 51-200 | Nantes, France | 51-200 | Exact match | 210 contacts → |
“Lhyfe is a certain idea of the world, a world in which we can meet our energy needs by being part of the natural ecosystem rather than trying to dominate it.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Elogenelogenh2.com HQ: Les Ulis, FranceReported employees: 51-200 | Les Ulis, France | 51-200 | Exact match | 179 contacts → |
“ELOGEN is a technology provider specialized in the design, the manufacturing and the maintenance of Hydrogen generators using water electrolysis, based on Proton Exchange Membrane…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Enapterenapter.com HQ: Saerbeck, ItalyReported employees: 201-500 | Saerbeck, Italy | 201-500 | Exact match | 168 contacts → |
“Enapter develops and manufactures AEM Electrolysers – disruptive devices producing green hydrogen to replace fossil fuels.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | RIX Industriesrixindustries.com HQ: Benicia, CA, United StatesReported employees: 51-200 | Benicia, CA, United States | 51-200 | Exact match | 152 contacts → |
“Serving critical infrastructure markets, RIX Industries is a global leader in the design, development, and manufacturing of hydrogen and gas generation systems, precision high…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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. | |||||
| 14 | MCPHYmcphy.com HQ: Foussemagne, FranceReported employees: 201-500 | Foussemagne, France | 201-500 | Exact match | 145 contacts → |
“As a leading "pure player" McPhy designs and manufactures a range of hydrogen production and valorization equipment, including electrolyzers built on robust and proven technology…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Genviagenvia.com HQ: Béziers, FranceReported employees: 51-200 | Béziers, France | 51-200 | Exact match | 144 contacts → |
“Today, and for decades, global warming is a reality.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | 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. | |||||
| 17 | AM Green Groupamgreen.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 131 contacts → |
“AM Green is indirectly wholly owned and controlled by the founders of Hyderabad-based Greenko Group - Anil Chalamalasetty and Mahesh Kolli.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Oneh2, INConeh2.com HQ: Longview, NC, United StatesReported employees: 51-200 | Longview, NC, United States | 51-200 | Exact match | 130 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | Hynamicshynamics.com HQ: Paris, FranceReported employees: 51-200 | Paris, France | 51-200 | Exact match | 127 contacts → |
“Hynamics est la filiale 100% du groupe EDF qui produit et commercialise de l'hydrogène bas carbone; elle adresse les deux marchés les plus émetteurs de CO2 que sont l’industrie et…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Framesframes-group.com HQ: Alphen Aan Den Rijn, NetherlandsReported employees: 201-500 | Alphen Aan Den Rijn, Netherlands | 201-500 | Exact match | 127 contacts → |
“As of December 2021, Frames is part of Plug Power.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | HDF Energyhdf-energy.com HQ: Blanquefort, FranceReported employees: 51-200 | Blanquefort, France | 51-200 | Exact match | 123 contacts → |
“HDF Energy is a leading global player in the hydrogen industry, dedicated to developing large-scale hydrogen infrastructure and advanced multi-megawatt fuel cell technology.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Hysatahysata.com HQ: Wollongong, AustraliaReported employees: 11-50 | Wollongong, Australia | 11-50 | Exact match | 113 contacts → |
“Our mission is to accelerate the world’s shift away from fossil fuels to green hydrogen by delivering the world’s best electrolyser.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | H2proh2pro.co HQ: Caesarea, TürkiyeReported employees: 51-200 | Caesarea, Türkiye | 51-200 | Exact match | 105 contacts → |
“H2Pro is on a mission to enable affordable green hydrogen at scale by providing the world with the leading next generation electrolyzer.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | H2apexh2apex.com HQ: Rostock-laage, GermanyReported employees: 51-200 | Rostock-laage, Germany | 51-200 | Exact match | 99 contacts → |
“About the company H2APEX Group SCA: H2APEX Group SCA is a listed holding company and the parent company of H2APEX Group, which in its core business develops, builds and sells or…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | 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. | |||||
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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
990 records in the displayed employee bands.
2 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 992 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 ↗
Hydrogen electrolysis companies by location
9 lists · largest firstEvery Hydrogen electrolysis companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Hydrogen electrolysis companies based in the United States156
- Hydrogen electrolysis companies based in Germany80
- Hydrogen electrolysis companies based in the United Kingdom73
- Hydrogen electrolysis companies based in Australia47
- Hydrogen electrolysis companies based in France46
- Hydrogen electrolysis companies based in India46
- Hydrogen electrolysis companies based in Spain37
- Hydrogen electrolysis companies based in the Netherlands37
- Hydrogen electrolysis companies based in Canada36
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 worldwide?
The saved snapshot records 992 matching company records, 13,902 tracked contacts and 5,430 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.
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Cite this list
RevenueBase Data Team. Top 25 hydrogen electrolysis companies worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/hydrogen-electrolysis-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗