Company lists · Data refreshed September 2026

Top 25 Green hydrogen companies worldwide

RevenueBase identified 1,179 company matches for green hydrogen companies worldwide as of September 2026 and tracks 33,510 professional contacts across them, including 11,011 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for green hydrogen 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 green hydrogen 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
1,179Companies
33,510Contacts tracked
11,011Verified emails
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The 25 largest green hydrogen companies worldwide

Ranked by team size
Top 25 of 1,179 company matches for green hydrogen companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchGurugram, IndiaHQ recorded Sep 20, 20261,001-5,0004,340 contacts →

Exact match

“ReNew is a leading decarbonisation solutions provider and the first Indian clean energy company to list on Nasdaq (Nasdaq: RNW).”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchHyderabad, IndiaHQ recorded Sep 20, 20261,001-5,0002,578 contacts →

Exact match

“Greenko, is one of the World’s leading Energy Transition and Decarbonization solutions company, with an installed Renewable Energy capacity of ~7.5 GW across Wind, Solar and Hydro…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchLatham, NY, United StatesHQ recorded Sep 20, 20261,001-5,0002,037 contacts →

Exact match

“Plug is building an end-to-end green hydrogen ecosystem, from production, storage and delivery to energy generation, to help its customers meet their business goals and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchHuangpu District, ChinaHQ recorded Sep 20, 20261,001-5,0001,961 contacts →

Exact match

“Envision Energy is a world-leading green technology company that provides renewable energy solutions for global enterprises, governments, and institutions.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchMumbai, IndiaHQ recorded Sep 20, 20265,001-10,0001,747 contacts →

Exact match

“Avaada Group is a diversified clean energy conglomerate focused on the global energy transition, providing solutions in renewable power generation, solar PV manufacturing, green…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchMadrid, SpainHQ recorded Sep 20, 202610001+1,298 contacts →

Exact match

“Somos una compañía comprometida con la energía y la movilidad sostenibles basadas en moléculas verdes.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchUnited StatesHQ recorded Sep 20, 20261,001-5,000786 contacts →

Exact match

“We’re Accelera by Cummins - the clean energy technology brand with a bold mission: to power a more sustainable world, one zero-emissions solution at a time.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchStockholm, SwedenHQ recorded Sep 20, 2026201-500711 contacts →

Exact match

“Founded in 2020, Stegra (formerly H2 Green Steel) was created with the purpose to decarbonize hard-to-abate industry.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchDortmund, GermanyHQ recorded Sep 20, 20261,001-5,000691 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
10Exact matchBerlin, GermanyHQ recorded Sep 20, 2026201-500565 contacts →

Exact match

“Q ENERGY is Europe’s 360° green energy company.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchFremont, United StatesHQ recorded Sep 20, 2026501-1,000547 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
12Exact matchReußenköge, GermanyHQ recorded Sep 20, 2026501-1,000480 contacts →

Exact match

“GP JOULE is an integrated energy supplier that covers the entire energy value chain, from generation to use – and from consulting and financing through to project planning…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchFrance, United StatesHQ recorded Sep 20, 2026201-500455 contacts →

Exact match

“Created at the end of 2009, CVE is a French multi-energy, multi-country renewable energy producer.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchDresden, GermanyHQ recorded Sep 20, 2026501-1,000427 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
15Exact matchAugsburg, GermanyHQ recorded Sep 20, 2026501-1,000378 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
16Exact matchOslo, NorwayHQ recorded Sep 20, 2026201-500327 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
17Exact matchSheffield, United KingdomHQ recorded Sep 20, 2026201-500285 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
18Exact matchKorea, South KoreaHQ recorded Sep 20, 2026501-1,000284 contacts →

Exact match

“We are a company that can organically connect renewable energy, clean hydrogen, energy solutions, and the LNG business to create synergy.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchTabuk, Saudi ArabiaHQ recorded Sep 20, 202651-200260 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
20Exact matchAlmería, SpainHQ recorded Sep 20, 2026501-1,000216 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
21Exact matchNantes, FranceHQ recorded Sep 20, 202651-200210 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
22Exact matchGurgaon, IndiaHQ recorded Sep 20, 2026501-1,000198 contacts →

Exact match

“Greenfuel is India's Tier 1 supplier of green mobility and clean energy solutions to top OEMs.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchSaerbeck, ItalyHQ recorded Sep 20, 2026201-500168 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
24Exact matchVadodara, IndiaHQ recorded Sep 20, 202651-200167 contacts →

Exact match

“At Newen Systems, we are driving the future of clean energy with cutting-edge Battery Energy Storage Systems (BESS) and DC-coupled solutions.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchBangrak, ThailandHQ recorded Sep 20, 2026201-500166 contacts →

Exact match

“BIG - A Climate Tech Company - is a leader in industrial gas and greenhouse gas reduction technology.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 1,179 green hydrogen companies worldwide

See the full list, filter by size, metro and specialty, and access 11,011 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Green hydrogen companies worldwide at a glance

As of Sep 20, 2026
32.9%Verified-email coverage
28.4Average contacts per company
1-10Median size (employees)
2.1%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
641
11-50
370
51-200
99
201-500
39
501-1,000
14
1,001-5,000
11
5,001-10,000
2
10001+
3

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 green hydrogen companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “green hydrogen 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 11,011 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.

Green hydrogen companies by location

10 lists · largest first

Every Green hydrogen companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many green hydrogen companies are there worldwide?

RevenueBase identified 1,179 company matches for green hydrogen 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?

RENEW tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most green hydrogen companies?

The United States leads with 132 companies, followed by the United Kingdom (100) and Germany (99). Every green hydrogen companies list by country and city is linked on this page.

Which city has the most green hydrogen companies?

London leads with 25 company records, followed by Madrid (25) and Berlin (13).

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 11,011 professional contacts with verified work emails tracked across these 1,179 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.

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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.