Company lists · Data refreshed September 2026

Top 25 Hydrogen plant manufacturers worldwide

Name: Hydrogen plant manufacturers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 554 companies tracked

RevenueBase identified 554 hydrogen plant manufacturers worldwide as of September 2026 and tracks 15,762 professional contacts across them, including 4,857 with verified work emails. Germany is the largest market and London the largest hub.

This list covers hydrogen plant manufacturers 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 30, 2026. Country and city lists for hydrogen plant manufacturers 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 30, 2026 86% judged on-target in blind review

554Companies

15,762Contacts tracked

4,857Verified emails

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The 25 largest hydrogen plant manufacturers worldwide

Ranked by team size

Top 25 of 554 hydrogen plant manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to hydrogen plant manufacturers: 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	Toyo Engineering Corporation	Partial evidence	Chiba-shi Mihama-ku, JapanHQ checked Sep 30, 2026	1,001-5,000	2,760 contacts →
	Partial evidence “Toyo Engineering is an engineering company that constructs the plant in a global stage centering on the plant engineering field.” Source: RevenueBase Database · checked Sep 30, 2026
2	Thyssenkrupp Nucera	Partial evidence	Dortmund, GermanyHQ checked Sep 30, 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 30, 2026
3	Neuman & Esser NEA Group	Indirect evidence	Übach-palenberg, GermanyHQ checked Sep 30, 2026	1,001-5,000	606 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
4	Ohmium	Partial evidence	Fremont, United StatesHQ checked Sep 30, 2026	501-1,000	547 contacts →
	Partial evidence “Ohmium's mission is to accelerate the adoption of green hydrogen to decarbonize hard-to-abate sectors and enable a low-carbon future.” Source: RevenueBase Database · checked Sep 30, 2026
5	Sunfire	Indirect evidence	Dresden, GermanyHQ checked Sep 30, 2026	501-1,000	427 contacts →
	Indirect evidence “Established in 2010 and based in Dresden, Germany, Sunfire is a world-leading industrial electrolysis company with two differentiated technologies.” Source: RevenueBase Database · checked Sep 30, 2026
6	Quest ONE	Indirect evidence	Augsburg, GermanyHQ checked Sep 30, 2026	501-1,000	378 contacts →
	Indirect evidence “As a technological pioneer, Quest One develops and produces innovative PEM electrolyzers and electrolyzer stacks.” Source: RevenueBase Database · checked Sep 30, 2026
7	Electric Hydrogen	Strong evidence	Devens, MA, United StatesHQ checked Sep 30, 2026	201-500	346 contacts →
	Strong evidence “Electric Hydrogen manufactures, delivers and commissions the world’s most powerful electrolyzers to make clean hydrogen projects economically viable today.” Source: RevenueBase Database · checked Sep 30, 2026
8	NEL Hydrogen	Partial evidence	Oslo, NorwayHQ checked Sep 30, 2026	201-500	327 contacts →
	Partial evidence “Nel has a history tracing back to 1927 and is today a leading pure play hydrogen electrolyser technology company with a global presence.” Source: RevenueBase Database · checked Sep 30, 2026
9	ITM Power	Indirect evidence	Sheffield, United KingdomHQ checked Sep 30, 2026	201-500	285 contacts →
	Indirect evidence “ITM Power was founded in and ITM Power plc was admitted to the AIM market of the London Stock Exchange in 2004.” Source: RevenueBase Database · checked Sep 30, 2026
10	Thermo Design Engineering LTD	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 30, 2026	501-1,000	278 contacts →
	Indirect evidence “Thermo Design (TDE) is an innovative energy solutions company and a recognized leader in the design and engineering, fabrication, manufacturing, construction management…” Source: RevenueBase Database · checked Sep 30, 2026
11	Entrepose Contracting	Indirect evidence	Nanterre, FranceHQ checked Sep 30, 2026	201-500	236 contacts →
	Indirect evidence “Entrepose Contracting, a subsidiary of VINCI Construction Grands Projets, designs and delivers critical energy infrastructure for the storage, treatment, and transportation of…” Source: RevenueBase Database · checked Sep 30, 2026
12	TCI Gecomp	Indirect evidence	Almería, SpainHQ checked Sep 30, 2026	501-1,000	216 contacts →
	Indirect evidence “TCI GECOMP es una empresa de Ingeniería y Construcción especializada en Energías renovables e Hidrógeno Verde con presencia en España, Perú, Chile y Argentina.” Source: RevenueBase Database · checked Sep 30, 2026
13	LHYFE	Indirect evidence	Nantes, FranceHQ checked Sep 30, 2026	51-200	210 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
14	STE Energy	Indirect evidence	Padua, ItalyHQ checked Sep 30, 2026	51-200	194 contacts →
	Indirect evidence “Since June 2025, STE Energy has been acquired by, becoming part of the world.” Source: RevenueBase Database · checked Sep 30, 2026
15	MCPHY	Strong evidence	Foussemagne, FranceHQ checked Sep 30, 2026	201-500	145 contacts →
	Strong evidence “As a leading "pure player" McPhy designs and manufactures a range of hydrogen production and valorization equipment, including electrolyzers built on robust and proven technology…” Source: RevenueBase Database · checked Sep 30, 2026
16	Frames	Indirect evidence	Alphen Aan Den Rijn, NetherlandsHQ checked Sep 30, 2026	201-500	127 contacts →
	Indirect evidence “As of December 2021, Frames is part of Plug Power.” Source: RevenueBase Database · checked Sep 30, 2026
17	HDF Energy	Partial evidence	Blanquefort, FranceHQ checked Sep 30, 2026	51-200	123 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
18	Sofregaz SAS	Indirect evidence	Puteaux, FranceHQ checked Sep 30, 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 30, 2026
19	2jcp	Partial evidence	Štetí, Czech RepublicHQ checked Sep 30, 2026	501-1,000	119 contacts →
	Partial evidence “At 2JCP, we design and manufacture complex solutions for gas-fired and clean energy.” Source: RevenueBase Database · checked Sep 30, 2026
20	Hygenco	Partial evidence	Gurgaon, IndiaHQ checked Sep 30, 2026	51-200	113 contacts →
	Partial evidence “Hygenco aims to be a global leader in deploying Green Hydrogen and Green Ammonia powered industry solutions.” Source: RevenueBase Database · checked Sep 30, 2026
21	Neuman & Esser Brasil	Indirect evidence	Belo Horizonte, United StatesHQ checked Sep 30, 2026	51-200	106 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
22	H2apex	Indirect evidence	Rostock-laage, GermanyHQ checked Sep 30, 2026	51-200	99 contacts →
	Indirect evidence “About the company H2APEX Group SCA: H2APEX Group SCA is a listed holding company and the parent company of H2APEX Group, which in its core business develops, builds and sells or…” Source: RevenueBase Database · checked Sep 30, 2026
23	Fest Gmbh	Partial evidence	Goslar, GermanyHQ checked Sep 30, 2026	51-200	85 contacts →
	Partial 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 30, 2026
24	Fastech	Indirect evidence	Buena Park, CA, United StatesHQ checked Sep 30, 2026	51-200	81 contacts →
	Indirect evidence “Fueling and Service Technologies, Inc.(FASTECH) is an end-to-end energy solutions company.” Source: RevenueBase Database · checked Sep 30, 2026
25	BGR Tech Limited	Indirect evidence	Chennai, IndiaHQ checked Sep 30, 2026	51-200	78 contacts →
	Indirect evidence “BGR Tech Ltd.” Source: RevenueBase Database · checked Sep 30, 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 plant manufacturers. 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 plant manufacturers.
Partial evidence: Its own public description names part of hydrogen plant manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrogen plant manufacturers. 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 554 hydrogen plant manufacturers worldwide

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Hydrogen plant manufacturers worldwide at a glance

As of Sep 30, 2026

30.8%Verified-email coverage

28.5Average contacts per company

11-50Median size (employees)

1.3%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

229

11-50

195

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 plant manufacturers, 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 plant manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “hydrogen plant manufacturers”. 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 plant manufacturers), 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 plant manufacturers, 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, 4,857 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 30, 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 plant manufacturers by location

6 lists · largest first

Every Hydrogen plant manufacturers 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 plant manufacturers, 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 plant manufacturers are there worldwide?

RevenueBase identified 554 hydrogen plant manufacturers 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?

Toyo Engineering Corporation, headquartered in Chiba-Shi, tops this list with the largest team on record.

Which country has the most hydrogen plant manufacturers?

Germany leads with 74 companies, followed by the United States (71) and Spain (31). Every hydrogen plant manufacturers list by country and city is linked on this page.

Which city has the most hydrogen plant manufacturers?

London leads with 7 headquartered companies, followed by Paris (6) and New York (5).

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 4,857 verified decision-maker contacts tracked across these 554 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 30, 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.