Company lists · Data refreshed October 2026

Top 25 Hydrogen consulting firms worldwide

RevenueBase identified 1,250 company matches for hydrogen consulting firms worldwide as of October 2026 and tracks 8,980 professional contacts across them, including 2,791 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for hydrogen consulting firms 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 October 1, 2026. Country and city lists for hydrogen consulting firms 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 Oct 1, 2026 How this list was built
1,250Companies
8,980Contacts tracked
2,791Verified emails
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The 25 largest hydrogen consulting firms worldwide

Ranked by team size
Top 25 of 1,250 company matches for hydrogen consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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 matchWashington, DC, United StatesHQ recorded Oct 1, 202651-200434 contacts →

Exact match

“Synergy Consulting is Global Leader in Financial and Corporate Advisory.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchIndiaHQ recorded Oct 1, 2026501-1,000275 contacts →

Exact match

“Global gas and power markets are expanding fast and becoming increasingly integrated and complex - and the need for market intelligence and informed advice based on deep industry…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchRueil-malmaison, FranceHQ recorded Oct 1, 202651-200212 contacts →

Exact match

“Beicip-Franlab is a leading Energy Consultancy and Software Editor created in the 1960's with recognized worldwide hands-on expertise.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchNantes, FranceHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
5Exact matchSingaporeHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
6Exact matchRio De Janeiro, BrazilHQ recorded Oct 1, 202651-200138 contacts →

Exact match

“PSR is a global provider of consulting services, computational modeling and energy innovation; and actively contributes to research and development of optimization and data…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchLongview, NC, United StatesHQ recorded Oct 1, 202651-200130 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchParis, FranceHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
9Exact matchAlphen Aan Den Rijn, NetherlandsHQ recorded Oct 1, 2026201-500127 contacts →

Exact match

“As of December 2021, Frames is part of Plug Power.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchPuteaux, FranceHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
11Exact matchRedwood City, CA, United StatesHQ recorded Oct 1, 2026201-500113 contacts →

Exact match

“Energy Experts International is a leader in providing management consultation to companies, organizations and end-users on energy issues, both domestically and globally.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchVadodara, IndiaHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
13Exact matchBristol, United KingdomHQ recorded Oct 1, 202651-200100 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchAlkhobar, Saudi ArabiaHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
15Exact matchSolna, SwedenHQ recorded Oct 1, 202651-20081 contacts →

Exact match

“Aenigma är ett konsultföretag som levererar expertis som gör skillnad.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchBrussels, BelgiumHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
17Exact matchGraz, AustriaHQ recorded Oct 1, 202651-20072 contacts →

Exact match

“The HyCentA Research GmbH at Graz University of Technology is the only extra-university research institution in Austria exclusively focusing on hydrogen technologies.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchMississauga, ON, CanadaHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
19Exact matchAbuja, NigeriaHQ recorded Oct 1, 202651-20070 contacts →

Exact match

“Consulting Services in Infrastructure and Energy”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchUnited StatesHQ recorded Oct 1, 202611-5059 contacts →

Exact match

“Koloma is a geologic hydrogen company that leverages its technology, proprietary data, and human capital advantages to identify and commercialize these resources on a global scale.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchEpila, SpainHQ recorded Oct 1, 202651-20058 contacts →

Exact match

“CALVERA HYDROGEN is a global player in the hydrogen infrastructure, which offer revolutionary solutions for companies and communities.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchWeeze, GermanyHQ recorded Oct 1, 2026201-50056 contacts →

Exact match

“Hexagon Purus hat sich auf Leichtbaukomponenten und -systeme aus Faserverbundwerkstoffen spezialisiert und ist weltweit führend in Schlüsseltechnologien für emissionsfreie…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchNoida, IndiaHQ recorded Oct 1, 2026201-50054 contacts →

Exact match

“RE4Climate Private Limited (‘RE4C’) was incorporated in early 2021 to provide wide variety of Developmental, Pre-developmental and other Consulting Solutions in Renewable Energy…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact matchParis, FranceHQ recorded Oct 1, 202611-5049 contacts →

Exact match

“Our company was born in 2021 from the combination of Ardian, one of the world's leading private equity firms, and FiveT Hydrogen, a hydrogen focused investment platform.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchRockville, MD, United StatesHQ recorded Oct 1, 202651-20047 contacts →

Exact match

“EXCEL has evolved over the last four decades to meet the needs of the nuclear energy industry.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 1,250 hydrogen consulting firms worldwide

See the full list, filter by size, metro and specialty, and access 2,791 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydrogen consulting firms worldwide at a glance

As of Oct 1, 2026
31.1%Verified-email coverage
7.2Average contacts per company
1-10Median size (employees)
3.1%Largest-city concentration · London
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
852
11-50
296
51-200
63
201-500
28
501-1,000
3
1,001-5,000
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 hydrogen consulting firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “hydrogen consulting firms” 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 2,791 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 October 1, 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 consulting firms by location

10 lists · largest first

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

Countries

Cities

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

How many hydrogen consulting firms are there worldwide?

RevenueBase identified 1,250 company matches for hydrogen consulting firms worldwide as of October 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?

Synergy Consulting, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most hydrogen consulting firms?

The United States leads with 128 companies, followed by Germany (94) and the United Kingdom (74). Every hydrogen consulting firms list by country and city is linked on this page.

Which city has the most hydrogen consulting firms?

London leads with 39 company records, followed by Calgary (16) and Houston (15).

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 2,791 professional contacts with verified work emails tracked across these 1,250 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 October 1, 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.