Company lists · Data refreshed September 2026
Top 16 Green hydrogen producers based in Spain
RevenueBase identified 45 company matches for green hydrogen producers associated with Spain as of September 2026 and tracks 733 professional contacts across them, including 106 with verified work emails. Madrid is the largest hub.
This list covers company matches for green hydrogen producers associated with Spain, 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 16 largest green hydrogen producers based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 216 contacts → | ||||
Exact match “TCI GECOMP es una empresa de Ingeniería y Construcción especializada en Energías renovables e Hidrógeno Verde con presencia en España, Perú, Chile y Argentina.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 71 contacts → | ||||
Exact match “Univergy Solar es una empresa hispano-japonesa especializada en el desarrollo y construcción de proyectos de energía solar, eólica y de hidrógeno verde, incluyendo soluciones de…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 60 contacts → | ||||
Exact match “H2B2 is a technology-based company that promotes, develops, finances, designs, integrates, builds, operates and maintains systems based on electrolyzers for hydrogen production…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 43 contacts → | ||||
Exact match “En Avalon desarrollamos proyectos de energía solar y de generación de hidrogeno verde, prestando servicios en todas las fases necesarias para llevarlos hasta la Operación…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 42 contacts → | ||||
Exact match “Matteco is a cleantech company accelerating global decarbonization through next-generation advanced material technology.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 31 contacts → | ||||
Exact match “En DH2 energy creemos que la transición energética debe ser sencilla, accesible y sostenible.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 26 contacts → | ||||
Exact match “KERIONICS is a technology-based company specialized in the development, manufacturing, and commercialization of key components for high-temperature electrolyzers, focusing on SOEL…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 22 contacts → | ||||
Exact match “Nordex Electrolyzers S.L.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 21 contacts → | ||||
Exact match “Reolum concibe y desarrolla proyectos innovadores para impulsar la descarbonización y avanzar en la transición energética.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 18 contacts → | ||||
Exact match “Como ingeniería, Base Sistemas lleva años trabajando en los sectores químico y energético realizando una gran cantidad de proyectos con el hidrógeno como protagonista.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 14 contacts → | ||||
Exact match “We are the Re-Evolution of energy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 9 contacts → | ||||
Exact match “H2Vector is a energy proposal to allow tackle CO2 emmisions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 8 contacts → | ||||
Exact match “Hyren is a new platform committed to the development of green hydrogen projects.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 8 contacts → | ||||
Exact match “H2Greem is a leading European technology company and manufacturer of next-generation electrolyser solutions based on proton exchange membrane (PEM) technology.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 7 contacts → | ||||
Exact match “Delivering the low cost renewable hydrogen revolution.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 4 contacts → | ||||
Exact match “Helios Aragon is a natural hydrogen producer otherwise known as "Gold" hydrogen.” 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 “green hydrogen producers”. 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 16 of 45 green hydrogen producers based in Spain
See the full list, filter by size, metro and specialty, and access 106 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Green hydrogen producers based in Spain at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 45 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 Spain whose business descriptions match “green hydrogen producers” 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 106 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 “green hydrogen producers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many green hydrogen producers are there based in Spain?
RevenueBase identified 45 company matches for green hydrogen producers associated with Spain 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?
TCI Gecomp tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most green hydrogen producers?
Madrid leads with 18 company records, followed by Barcelona (2) and Seville (2).
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 106 professional contacts with verified work emails tracked across these 45 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 45 green hydrogen producers based in Spain. Start with a free account, no credit card.
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Browse the directory
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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- Green hydrogen producers based in Australia
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Company intelligence · public preview
Top 16 green hydrogen producers based in Spain
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 45 matching company records for green hydrogen producers based in Spain, with 733 tracked contacts and 106 verified work emails.
This public preview shows 16 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 16 green hydrogen producers based in Spain
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 |  TCI Gecomptci-gecomp.comHQ: Almería, SpainReported employees: 501-1,000 | Almería, Spain | 501-1,000 | Exact match | 216 contacts → |
“TCI GECOMP es una empresa de Ingeniería y Construcción especializada en Energías renovables e Hidrógeno Verde con presencia en España, Perú, Chile y Argentina.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Univergy Solarunivergysolar.comHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 71 contacts → |
“Univergy Solar es una empresa hispano-japonesa especializada en el desarrollo y construcción de proyectos de energía solar, eólica y de hidrógeno verde, incluyendo soluciones de…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | HQ: Dos Hermanas, SpainReported employees: 11-50 | Dos Hermanas, Spain | 11-50 | Exact match | 60 contacts → |
“H2B2 is a technology-based company that promotes, develops, finances, designs, integrates, builds, operates and maintains systems based on electrolyzers for hydrogen production…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Avalon Renovablesavalonrenovables.comHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 43 contacts → |
“En Avalon desarrollamos proyectos de energía solar y de generación de hidrogeno verde, prestando servicios en todas las fases necesarias para llevarlos hasta la Operación…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Mattecomatteco.comHQ: Paterna, SpainReported employees: 11-50 | Paterna, Spain | 11-50 | Exact match | 42 contacts → |
“Matteco is a cleantech company accelerating global decarbonization through next-generation advanced material technology.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Dh2 Energydh2energy.comHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 31 contacts → |
“En DH2 energy creemos que la transición energética debe ser sencilla, accesible y sostenible.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Kerionicskerionics.comHQ: Torrent, SpainReported employees: 1-10 | Torrent, Spain | 1-10 | Exact match | 26 contacts → |
“KERIONICS is a technology-based company specialized in the development, manufacturing, and commercialization of key components for high-temperature electrolyzers, focusing on SOEL…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Nordex Electrolyzersnordex-online.comHQ: Barásoain, SpainReported employees: 11-50 | Barásoain, Spain | 11-50 | Exact match | 22 contacts → |
“Nordex Electrolyzers S.L.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Reolumreolum.comHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 21 contacts → |
“Reolum concibe y desarrolla proyectos innovadores para impulsar la descarbonización y avanzar en la transición energética.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Base Sistemasbasesistemas.comHQ: Zaragoza, SpainReported employees: 11-50 | Zaragoza, Spain | 11-50 | Exact match | 18 contacts → |
“Como ingeniería, Base Sistemas lleva años trabajando en los sectores químico y energético realizando una gran cantidad de proyectos con el hidrógeno como protagonista.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  HVR Energyhvrenergy.comHQ: Madrid, SpainReported employees: 1-10 | Madrid, Spain | 1-10 | Exact match | 14 contacts → |
“We are the Re-Evolution of energy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | H2vectorh2vector.com HQ: El Entrego, SpainReported employees: 1-10 | El Entrego, Spain | 1-10 | Exact match | 9 contacts → |
“H2Vector is a energy proposal to allow tackle CO2 emmisions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  HYRENhyren.esHQ: Madrid, SpainReported employees: 1-10 | Madrid, Spain | 1-10 | Exact match | 8 contacts → |
“Hyren is a new platform committed to the development of green hydrogen projects.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  H2greem Global Solutionsh2greem.comHQ: Hontoria, SpainReported employees: 11-50 | Hontoria, Spain | 11-50 | Exact match | 8 contacts → |
“H2Greem is a leading European technology company and manufacturer of next-generation electrolyser solutions based on proton exchange membrane (PEM) technology.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  HYSUNh2hysun.comHQ: Madrid, SpainReported employees: 1-10 | Madrid, Spain | 1-10 | Exact match | 7 contacts → |
“Delivering the low cost renewable hydrogen revolution.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Helios Aragonhelios-aragon.comHQ: Huesca, SpainReported employees: 1-10 | Huesca, Spain | 1-10 | Exact match | 4 contacts → |
“Helios Aragon is a natural hydrogen producer otherwise known as "Gold" hydrogen.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 16 of 45 company matches
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Green hydrogen producers: 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
45 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 Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 45 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 green hydrogen producers?
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 green hydrogen producers did RevenueBase find based in Spain?
The saved snapshot records 45 matching company records, 733 tracked contacts and 106 verified emails. The public preview displays 16 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
Green hydrogen producers by geography
- Green hydrogen producers based in Australia
- Green hydrogen producers based in Canada
- Green hydrogen producers based in France
- Green hydrogen producers based in Germany
- Green hydrogen producers based in India
- Green hydrogen producers based in the Netherlands
- Green hydrogen producers based in Norway
- Green hydrogen producers based in the United Kingdom
- Green hydrogen producers based in the United States
Browse the directory
Cite this list
RevenueBase Data Team. Top 16 green hydrogen producers based in Spain. Snapshot: September 20, 2026. https://revenuebase.ai/companies/green-hydrogen-producers/spain.
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
- Green hydrogen producers based in Australia
- Green hydrogen producers based in Canada
- Green hydrogen producers based in France
- Green hydrogen producers based in Germany
- Green hydrogen producers based in India
- Green hydrogen producers based in the Netherlands
Company intelligence · public preview
Top 16 green hydrogen producers based in Spain
RevenueBase records 45 matching company records for green hydrogen producers based in Spain, with 733 tracked contacts and 106 verified work emails.
This public preview shows 16 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 16 green hydrogen producers based in Spain
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 | TCI Gecomptci-gecomp.com HQ: Almería, SpainReported employees: 501-1,000 | Almería, Spain | 501-1,000 | Exact match | 216 contacts → |
“TCI GECOMP es una empresa de Ingeniería y Construcción especializada en Energías renovables e Hidrógeno Verde con presencia en España, Perú, Chile y Argentina.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Univergy Solarunivergysolar.com HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 71 contacts → |
“Univergy Solar es una empresa hispano-japonesa especializada en el desarrollo y construcción de proyectos de energía solar, eólica y de hidrógeno verde, incluyendo soluciones de…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | HQ: Dos Hermanas, SpainReported employees: 11-50 | Dos Hermanas, Spain | 11-50 | Exact match | 60 contacts → |
“H2B2 is a technology-based company that promotes, develops, finances, designs, integrates, builds, operates and maintains systems based on electrolyzers for hydrogen production…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Avalon Renovablesavalonrenovables.com HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 43 contacts → |
“En Avalon desarrollamos proyectos de energía solar y de generación de hidrogeno verde, prestando servicios en todas las fases necesarias para llevarlos hasta la Operación…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Mattecomatteco.com HQ: Paterna, SpainReported employees: 11-50 | Paterna, Spain | 11-50 | Exact match | 42 contacts → |
“Matteco is a cleantech company accelerating global decarbonization through next-generation advanced material technology.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Dh2 Energydh2energy.com HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 31 contacts → |
“En DH2 energy creemos que la transición energética debe ser sencilla, accesible y sostenible.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Kerionicskerionics.com HQ: Torrent, SpainReported employees: 1-10 | Torrent, Spain | 1-10 | Exact match | 26 contacts → |
“KERIONICS is a technology-based company specialized in the development, manufacturing, and commercialization of key components for high-temperature electrolyzers, focusing on SOEL…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Nordex Electrolyzersnordex-online.com HQ: Barásoain, SpainReported employees: 11-50 | Barásoain, Spain | 11-50 | Exact match | 22 contacts → |
“Nordex Electrolyzers S.L.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Reolumreolum.com HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 21 contacts → |
“Reolum concibe y desarrolla proyectos innovadores para impulsar la descarbonización y avanzar en la transición energética.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Base Sistemasbasesistemas.com HQ: Zaragoza, SpainReported employees: 11-50 | Zaragoza, Spain | 11-50 | Exact match | 18 contacts → |
“Como ingeniería, Base Sistemas lleva años trabajando en los sectores químico y energético realizando una gran cantidad de proyectos con el hidrógeno como protagonista.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HVR Energyhvrenergy.com HQ: Madrid, SpainReported employees: 1-10 | Madrid, Spain | 1-10 | Exact match | 14 contacts → |
“We are the Re-Evolution of energy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | H2vectorh2vector.com HQ: El Entrego, SpainReported employees: 1-10 | El Entrego, Spain | 1-10 | Exact match | 9 contacts → |
“H2Vector is a energy proposal to allow tackle CO2 emmisions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HYRENhyren.es HQ: Madrid, SpainReported employees: 1-10 | Madrid, Spain | 1-10 | Exact match | 8 contacts → |
“Hyren is a new platform committed to the development of green hydrogen projects.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | H2greem Global Solutionsh2greem.com HQ: Hontoria, SpainReported employees: 11-50 | Hontoria, Spain | 11-50 | Exact match | 8 contacts → |
“H2Greem is a leading European technology company and manufacturer of next-generation electrolyser solutions based on proton exchange membrane (PEM) technology.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HYSUNh2hysun.com HQ: Madrid, SpainReported employees: 1-10 | Madrid, Spain | 1-10 | Exact match | 7 contacts → |
“Delivering the low cost renewable hydrogen revolution.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Helios Aragonhelios-aragon.com HQ: Huesca, SpainReported employees: 1-10 | Huesca, Spain | 1-10 | Exact match | 4 contacts → |
“Helios Aragon is a natural hydrogen producer otherwise known as "Gold" hydrogen.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 16 of 45 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Green hydrogen producers: 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
45 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 Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 45 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 green hydrogen producers?
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 green hydrogen producers did RevenueBase find based in Spain?
The saved snapshot records 45 matching company records, 733 tracked contacts and 106 verified emails. The public preview displays 16 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.
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Cite this list
RevenueBase Data Team. Top 16 green hydrogen producers based in Spain. Snapshot: September 20, 2026. https://revenuebase.ai/companies/green-hydrogen-producers/spain.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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