Company lists · Data refreshed September 2026

Top 25 Hydrogen technology consultants worldwide

Name: Hydrogen technology consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 904 companies tracked

RevenueBase identified 904 hydrogen technology consultants worldwide as of September 2026 and tracks 7,365 professional contacts across them, including 2,650 with verified work emails. The United States is the largest market and London the largest hub.

This list covers hydrogen technology consultants worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026. Country and city lists for hydrogen technology consultants follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

904Companies

7,365Contacts tracked

2,650Verified emails

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The 25 largest hydrogen technology consultants worldwide

Ranked by team size

Top 25 of 904 hydrogen technology consultants worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to hydrogen technology consultants: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Thyssenkrupp Nucera	Partial evidence	Dortmund, GermanyHQ checked Sep 20, 2026	1,001-5,000	691 contacts →
	Partial evidence “thyssenkrupp nucera offers world-leading technologies for high-efficiency electrolysis plants.” Source: RevenueBase Database · checked Sep 20, 2026
2	AFC Energy	Strong evidence	Cranleigh, United KingdomHQ checked Sep 20, 2026	51-200	149 contacts →
	Strong evidence “AFC Energy is the leading provider of Hydrogen fuel cell technology to generate clean off-grid energy.” Source: RevenueBase Database · checked Sep 20, 2026
3	Frames	Indirect evidence	Alphen Aan Den Rijn, NetherlandsHQ checked Sep 20, 2026	201-500	127 contacts →
	Indirect evidence “As of December 2021, Frames is part of Plug Power.” Source: RevenueBase Database · checked Sep 20, 2026
4	Sofregaz SAS	Indirect evidence	Puteaux, FranceHQ checked Sep 20, 2026	51-200	122 contacts →
	Indirect evidence “SOFREGAZ is a leading independent engineering company, created in 1959 by Gaz de France, with over 1300 projects across 95 countries.” Source: RevenueBase Database · checked Sep 20, 2026
5	Rishabh PRO Engineering	Indirect evidence	Vadodara, IndiaHQ checked Sep 20, 2026	51-200	109 contacts →
	Indirect evidence “Rishabh Pro Engineering Services Private Limited is a leading multidisciplinary design engineering firm with over two decades of experience.” Source: RevenueBase Database · checked Sep 20, 2026
6	Dens Dutch Energy Solutions	Partial evidence	Helmond, NetherlandsHQ checked Sep 20, 2026	51-200	104 contacts →
	Partial evidence “DENS is a high-tech development company based in Brabant, working since 2015 on technological developments in the field of battery, fuel cell and hydrozine technology.” Source: RevenueBase Database · checked Sep 20, 2026
7	Everoze	Strong evidence	Bristol, United KingdomHQ checked Sep 20, 2026	51-200	100 contacts →
	Strong evidence “Everoze is an employee-owned renewables, green hydrogen and storage consultancy.” Source: RevenueBase Database · checked Sep 20, 2026
8	Devinn	Partial evidence	Mladá Boleslav, Czech RepublicHQ checked Sep 20, 2026	51-200	89 contacts →
	Partial evidence “We are a major Czech integrator of hydrogen systems in energy and transport.” Source: RevenueBase Database · checked Sep 20, 2026
9	Fest Gmbh	Indirect evidence	Goslar, GermanyHQ checked Sep 20, 2026	51-200	85 contacts →
	Indirect evidence “With over 50 years of experience in the electrification, automation, and digitalization of industrial processes, FEST GmbH develops, manufactures, and supplies state-of-the-art…” Source: RevenueBase Database · checked Sep 20, 2026
10	Fichtner Consulting Engineers LLC Saudi Arabia	Partial evidence	Alkhobar, Saudi ArabiaHQ checked Sep 20, 2026	201-500	85 contacts →
	Partial evidence “The Fichtner Group is one of the leading independent engineering consultancy firms in the world.” Source: RevenueBase Database · checked Sep 20, 2026
11	Hinicio	Partial evidence	Brussels, BelgiumHQ checked Sep 20, 2026	51-200	76 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
12	Utis Ultimate Technology To Industrial Savings	Partial evidence	Lisboa, PortugalHQ checked Sep 20, 2026	51-200	76 contacts →
	Partial evidence “Patented technologies delivering industrial performance, lower operating costs, and reduced CO₂ emissions through combustion optimization.” Source: RevenueBase Database · checked Sep 20, 2026
13	Hycenta Research Gmbh	Strong evidence	Graz, AustriaHQ checked Sep 20, 2026	51-200	72 contacts →
	Strong evidence “The HyCentA Research GmbH at Graz University of Technology is the only extra-university research institution in Austria exclusively focusing on hydrogen technologies.” Source: RevenueBase Database · checked Sep 20, 2026
14	Voith Hystech	Strong evidence	Garching Bei München, GermanyHQ checked Sep 20, 2026	51-200	71 contacts →
	Strong evidence “At Voith HySTech, we are revolutionizing the mobility of tomorrow with our cutting-edge hydrogen storage technologies.” Source: RevenueBase Database · checked Sep 20, 2026
15	Hydrogenics	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 20, 2026	201-500	71 contacts →
	Partial evidence “SHIFT POWER ENERGIZE YOUR WORLD Hydrogenics, a Cummins company, is an industry leader in designing, manufacturing, building and installing industrial and commercial Hydrogen…” Source: RevenueBase Database · checked Sep 20, 2026
16	H2site	Partial evidence	Loiu, SpainHQ checked Sep 20, 2026	51-200	62 contacts →
	Partial evidence “H2SITE provides solutions to the hydrogen transport problem.” Source: RevenueBase Database · checked Sep 20, 2026
17	H2b2 Electrolysis Technologies	Strong evidence	Dos Hermanas, SpainHQ checked Sep 20, 2026	11-50	60 contacts →
	Strong evidence “H2B2 is a technology-based company that promotes, develops, finances, designs, integrates, builds, operates and maintains systems based on electrolyzers for hydrogen production…” Source: RevenueBase Database · checked Sep 20, 2026
18	Koloma	Strong evidence	United StatesHQ checked Sep 20, 2026	11-50	59 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
19	Calvera Hydrogen	Partial evidence	Epila, SpainHQ checked Sep 20, 2026	51-200	58 contacts →
	Partial evidence “CALVERA HYDROGEN is a global player in the hydrogen infrastructure, which offer revolutionary solutions for companies and communities.” Source: RevenueBase Database · checked Sep 20, 2026
20	Hystar	Partial evidence	Oslo, NorwayHQ checked Sep 20, 2026	51-200	57 contacts →
	Partial evidence “Hystar is a high tech company that specializes in advanced PEM electrolysers for large scale green hydrogen production.” Source: RevenueBase Database · checked Sep 20, 2026
21	Hexagon Purus Weeze Gmbh	Indirect evidence	Weeze, GermanyHQ checked Sep 20, 2026	201-500	56 contacts →
	Indirect evidence “Hexagon Purus hat sich auf Leichtbaukomponenten und -systeme aus Faserverbundwerkstoffen spezialisiert und ist weltweit führend in Schlüsseltechnologien für emissionsfreie…” Source: RevenueBase Database · checked Sep 20, 2026
22	Longi Hydrogen	Partial evidence	Xi'an, ChinaHQ checked Sep 20, 2026	201-500	53 contacts →
	Partial evidence “LONGi Hydrogen is a subsidiary of LONGi Group.” Source: RevenueBase Database · checked Sep 20, 2026
23	Hygear	Partial evidence	Arnhem, NetherlandsHQ checked Sep 20, 2026	11-50	50 contacts →
	Partial evidence “HyGear makes reliable, affordable, on-site and on-demand (bio)hydrogen accessible.” Source: RevenueBase Database · checked Sep 20, 2026
24	Newtrace	Partial evidence	Bengaluru, IndiaHQ checked Sep 20, 2026	11-50	46 contacts →
	Partial evidence “Newtrace is a deep-tech OEM building end-to-end solutions across the electrolyzer value chain, to deliver the lowest capex, the most efficient hydrogen production and a…” Source: RevenueBase Database · checked Sep 20, 2026
25	KEYOU	Strong evidence	Munich, GermanyHQ checked Sep 20, 2026	51-200	45 contacts →
	Strong evidence “KEYOU is a successful clean mobility company based in Munich which developed innovative hydrogen technologies since 2015.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: hydrogen technology consultants. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names hydrogen technology consultants.
Partial evidence: Its own public description names part of hydrogen technology consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrogen technology consultants. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 904 hydrogen technology consultants worldwide

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Hydrogen technology consultants worldwide at a glance

As of Sep 20, 2026

36.0%Verified-email coverage

8.1Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

563

11-50

237

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among hydrogen technology consultants, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for hydrogen technology consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “hydrogen technology consultants”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names hydrogen technology consultants), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among hydrogen technology consultants, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 2,650 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Hydrogen technology consultants by location

8 lists · largest first

Every Hydrogen technology 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 Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names hydrogen technology consultants, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many hydrogen technology consultants are there worldwide?

RevenueBase identified 904 hydrogen technology consultants worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Thyssenkrupp Nucera, headquartered in Dortmund, tops this list with the largest team on record.

Which country has the most hydrogen technology consultants?

The United States leads with 114 companies, followed by Germany (95) and the United Kingdom (64). Every hydrogen technology consultants list by country and city is linked on this page.

Which city has the most hydrogen technology consultants?

London leads with 23 headquartered companies, followed by Calgary (14) and Madrid (13).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,650 verified decision-maker contacts tracked across these 904 companies.

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 Smart Search, 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.