Company lists · Data refreshed September 2026

Top 25 Green hydrogen consultants worldwide

RevenueBase identified 959 company matches for green hydrogen consultants worldwide as of September 2026 and tracks 11,179 professional contacts across them, including 4,290 with verified work emails. Germany is the largest market and London the largest hub.

This list covers company matches for green hydrogen consultants 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 21, 2026. Country and city lists for green hydrogen consultants 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 21, 2026 How this list was built
959Companies
11,179Contacts tracked
4,290Verified emails
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The 25 largest green hydrogen consultants worldwide

Ranked by team size
Top 25 of 959 company matches for green hydrogen consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 matchLatham, NY, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
2Exact matchDortmund, GermanyHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
3Exact matchFremont, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
4Exact matchTabuk, Saudi ArabiaHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
5Exact matchAlmería, SpainHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
6Exact matchNantes, FranceHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
7Exact matchSingaporeHQ recorded Sep 21, 2026201-500167 contacts →

Exact match

“Sunkonnect is a leading energy transition and renewable energy consulting company delivering end-to-end engineering, quality assurance, project management consultancy, and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchBrussels, BelgiumHQ recorded Sep 21, 202651-200154 contacts →

Exact match

“TES is a global green energy company focused on developing giga-scale projects to produce hydrogen-based e-fuels, such as e-NG (electric natural gas made from green hydrogen and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchNewcastle, United KingdomHQ recorded Sep 21, 202651-200137 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 21, 2026 · View company records in RevenueBase
10Exact matchUnited StatesHQ recorded Sep 21, 202651-200131 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 21, 2026 · View company records in RevenueBase
11Exact matchParis, FranceHQ recorded Sep 21, 202651-200127 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 21, 2026 · View company records in RevenueBase
12Exact matchBlanquefort, FranceHQ recorded Sep 21, 202651-200123 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 21, 2026 · View company records in RevenueBase
13Exact matchPuteaux, FranceHQ recorded Sep 21, 202651-200122 contacts →

Exact match

“SOFREGAZ is a leading independent engineering company, created in 1959 by Gaz de France, with over 1300 projects across 95 countries.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchWollongong, AustraliaHQ recorded Sep 21, 202611-50113 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 21, 2026 · View company records in RevenueBase
15Exact matchGurugram, IndiaHQ recorded Sep 21, 202651-200113 contacts →

Exact match

“Hygenco aims to be a global leader in deploying Green Hydrogen and Green Ammonia powered industry solutions.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchGeretsried, GermanyHQ recorded Sep 21, 2026501-1,000109 contacts →

Exact match

“Die Tyczka Gruppe ist ein Gasespezialist mit Fokus auf Flüssiggas, Industriegase und Wasserstoff.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchVadodara, IndiaHQ recorded Sep 21, 202651-200109 contacts →

Exact match

“Rishabh Pro Engineering Services Private Limited is a leading multidisciplinary design engineering firm with over two decades of experience.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchBelo Horizonte, United StatesHQ recorded Sep 21, 202651-200106 contacts →

Exact match

“NEUMAN & ESSER is a reliable partner to the industry, driving both the energy transition and the circular economy with integrated solutions for the energy infrastructure of…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchBristol, United KingdomHQ recorded Sep 21, 202651-200100 contacts →

Exact match

“Everoze is an employee-owned renewables, green hydrogen and storage consultancy.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchAlkhobar, Saudi ArabiaHQ recorded Sep 21, 2026201-50085 contacts →

Exact match

“The Fichtner Group is one of the leading independent engineering consultancy firms in the world.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchNoida, IndiaHQ recorded Sep 21, 202651-20081 contacts →

Exact match

“GH2 Solar is India’s only integrated green hydrogen platform from electron to molecule.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchBrussels, BelgiumHQ recorded Sep 21, 202651-20076 contacts →

Exact match

“Founded in 2006, HINICIO is a strategic consulting firm specialized in the decarbonization challenges of hard-to-abate sectors, with more than 20 years of experience in hydrogen…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchMontevideo, UruguayHQ recorded Sep 21, 202611-5071 contacts →

Exact match

“SEG Ingeniería es una compañía multinacional uruguaya con 26 años de trayectoria en la región integrada por un grupo de empresas cuyas áreas de negocio son: Eficiencia Energética…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchMississauga, ON, CanadaHQ recorded Sep 21, 2026201-50071 contacts →

Exact match

“SHIFT POWER ENERGIZE YOUR WORLD Hydrogenics, a Cummins company, is an industry leader in designing, manufacturing, building and installing industrial and commercial Hydrogen…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchHerning, DenmarkHQ recorded Sep 21, 202651-20066 contacts →

Exact match

“Everfuel is the new fueling hydrogen fuel company in Europe.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 959 green hydrogen consultants worldwide

See the full list, filter by size, metro and specialty, and access 4,290 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Green hydrogen consultants worldwide at a glance

As of Sep 21, 2026
38.4%Verified-email coverage
11.7Average contacts per company
1-10Median size (employees)
3.0%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
635
11-50
233
51-200
61
201-500
20
501-1,000
5
1,001-5,000
3
10001+
1

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 consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “green hydrogen consultants” 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 4,290 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 21, 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 consultants by location

8 lists · largest first

Every Green hydrogen consultants 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 consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many green hydrogen consultants are there worldwide?

RevenueBase identified 959 company matches for green hydrogen consultants 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?

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

Which country has the most green hydrogen consultants?

Germany leads with 94 companies, followed by the United Kingdom (87) and the United States (87). Every green hydrogen consultants list by country and city is linked on this page.

Which city has the most green hydrogen consultants?

London leads with 29 company records, followed by Madrid (16) and Paris (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 4,290 professional contacts with verified work emails tracked across these 959 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 21, 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.