Company lists · Data refreshed September 2026

Top 25 Hydrogen electrolyzer manufacturers worldwide

RevenueBase identified 98 hydrogen electrolyzer manufacturers worldwide as of September 2026 and tracks 3,438 professional contacts across them, including 1,706 with verified work emails and 0 with mobile numbers. The United States is the largest market and Augsburg the largest hub.

This list covers hydrogen electrolyzer 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 16, 2026. Country and city lists for hydrogen electrolyzer 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 16, 2026 86% judged on-target in blind review
98Companies
3,438Contacts tracked
1,706Verified emails
0Mobile numbers
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The 25 largest hydrogen electrolyzer manufacturers worldwide

Ranked by team size
Top 25 of 98 hydrogen electrolyzer manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to hydrogen electrolyzer 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceDortmund, GermanyHQ checked Sep 16, 20261,001-5,000691 contacts →

Indirect evidence

“thyssenkrupp nucera offers world-leading technologies for high-efficiency electrolysis plants.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceDresden, GermanyHQ checked Sep 16, 2026501-1,000427 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 16, 2026
3Partial evidenceAugsburg, GermanyHQ checked Sep 16, 2026501-1,000378 contacts →

Partial evidence

“As a technological pioneer, Quest One develops and produces innovative PEM electrolyzers and electrolyzer stacks.”

Source: RevenueBase Database · checked Sep 16, 2026
4Strong evidenceDevens, MA, United StatesHQ checked Sep 16, 2026201-500346 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 16, 2026
5Strong evidenceSaerbeck, ItalyHQ checked Sep 16, 2026201-500168 contacts →

Strong evidence

“Enapter develops and manufactures AEM Electrolysers – disruptive devices producing green hydrogen to replace fossil fuels.”

Source: RevenueBase Database · checked Sep 16, 2026
6Partial evidenceBenicia, CA, United StatesHQ checked Sep 16, 202651-200152 contacts →

Partial evidence

“Serving critical infrastructure markets, RIX Industries is a global leader in the design, development, and manufacturing of hydrogen and gas generation systems, precision high…”

Source: RevenueBase Database · checked Sep 16, 2026
7Indirect evidenceBarleben, GermanyHQ checked Sep 16, 2026201-50092 contacts →

Indirect evidence

“The future can only be influenced if we lay the foundation for it today.”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceGoslar, GermanyHQ checked Sep 16, 202651-20085 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 16, 2026
9Partial evidenceMoss Landing, CA, United StatesHQ checked Sep 16, 202651-20076 contacts →

Partial evidence

“Verdagy is innovating advanced electrolysis technology for the large-scale production of clean hydrogen.”

Source: RevenueBase Database · checked Sep 16, 2026
10Indirect evidenceWeeze, GermanyHQ checked Sep 16, 2026201-50056 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 16, 2026
11Partial evidencePalo Alto, CA, United StatesHQ checked Sep 16, 2026n/a45 contacts →

Partial evidence

“Fourier is working on making on-site Hydrogen universally accessible.”

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceSanta Clara, CA, United StatesHQ checked Sep 16, 202611-5041 contacts →

Indirect evidence

“Founded in 2020, EVOLOH Inc.”

Source: RevenueBase Database · checked Sep 16, 2026
13Partial evidenceIthaca, NY, United StatesHQ checked Sep 16, 202611-5035 contacts →

Partial evidence

“Ecolectro is revolutionizing green hydrogen production with our groundbreaking Anion Exchange Membrane (AEM) technology, enabling affordable and sustainable hydrogen generation…”

Source: RevenueBase Database · checked Sep 16, 2026
14Partial evidenceBurgwedel, GermanyHQ checked Sep 16, 202651-20034 contacts →

Partial evidence

“JAG“, the turn key specialist for high purity gas supply systems, electrolyser and high pressure hydrogen refueling.”

Source: RevenueBase Database · checked Sep 16, 2026
15Strong evidenceGreenville, SC, United StatesHQ checked Sep 16, 202611-5032 contacts →

Strong evidence

“Infintium Fuel Cell Systems is an original designer and manufacturer of the next generation of zero emission Hydrogen Power Cells for motive applications.”

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceColumbus, OH, United StatesHQ checked Sep 16, 202611-5031 contacts →

Indirect evidence

“Our mission is to accelerate the transition to a clean energy economy.”

Source: RevenueBase Database · checked Sep 16, 2026
17Partial evidenceIvyland, PA, United StatesHQ checked Sep 16, 202611-5030 contacts →

Partial evidence

“Power+Energy supplies Hydrogen Purity Analyzers and Hydrogen Separators and is developing high- efficiency, low cost Hydrogen Generators for fuel cell applications.”

Source: RevenueBase Database · checked Sep 16, 2026
18Partial evidenceWilmington, DE, United StatesHQ checked Sep 16, 202611-5026 contacts →

Partial evidence

“The global energy transition to hydrogen is here, and Versogen is boldly leading the way.”

Source: RevenueBase Database · checked Sep 16, 2026
19Partial evidenceOrange, CA, United StatesHQ checked Sep 16, 202651-20025 contacts →

Partial evidence

“Hyperion Companies was founded in 2011 with the goal of bringing a new wave of clean energy to the market in the form of hydrogen.”

Source: RevenueBase Database · checked Sep 16, 2026
20Partial evidenceBerlin, GermanyHQ checked Sep 16, 202611-5022 contacts →

Partial evidence

“STOFF2 GmbH is developing a new form of electrolysis technology for industrial applications of green hydrogen: Zinc Intermediate Electrolysis (Zink-Zwischenschritt-Elektrolyseur…”

Source: RevenueBase Database · checked Sep 16, 2026
21Strong evidenceHeide, GermanyHQ checked Sep 16, 202611-5022 contacts →

Strong evidence

“H2 Core Systems GmbH is a manufacturer of complete energy supply systems with hydrogen technology and was founded in October 2020 as a spin-off of the TC-Hydraulik Group, based in…”

Source: RevenueBase Database · checked Sep 16, 2026
22Partial evidenceNew York, NY, United StatesHQ checked Sep 16, 202611-5016 contacts →

Partial evidence

“Arco Technologies Inc develops and produces proton exchange membrane (PEM) fuel cell and anion exchange membrane (AEM) electrolyzers.”

Source: RevenueBase Database · checked Sep 16, 2026
23Indirect evidenceAugsburg, GermanyHQ checked Sep 16, 2026501-1,00014 contacts →

Indirect evidence

“H-TEC SYSTEMS stands for innovation, sustainability, and a green future.”

Source: RevenueBase Database · checked Sep 16, 2026
24Strong evidenceLemont, IL, United StatesHQ checked Sep 16, 20261-1014 contacts →

Strong evidence

“Building hydrogen for industrial decarbonization with durable and efficient fuel cells and electrolyzers”

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceBend, OR, United StatesHQ checked Sep 16, 202611-5011 contacts →

Partial evidence

“Element 1 is a global leader in the development of clean energy technologies – including advanced hydrogen generation systems for the fuel cell industry.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 98 hydrogen electrolyzer manufacturers worldwide

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Hydrogen electrolyzer manufacturers worldwide at a glance

As of Sep 16, 2026
49.6%Verified-email coverage
35.1Average contacts per company
11-50Median size (employees)
2.0%Largest-city concentration · Augsburg
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
44
11-50
34
51-200
11
201-500
5
501-1,000
3
1,001-5,000
1

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 electrolyzer 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
2 countries, largest first: the United States, Germany. Country and city lists for hydrogen electrolyzer manufacturers are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “hydrogen electrolyzer 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 electrolyzer 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 electrolyzer 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, 1,706 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 16, 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 electrolyzer manufacturers by location

2 lists · largest first

Every Hydrogen electrolyzer 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 electrolyzer 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 electrolyzer manufacturers are there worldwide?

RevenueBase identified 98 hydrogen electrolyzer 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?

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

Which country has the most hydrogen electrolyzer manufacturers?

The United States leads with 60 companies, followed by Germany (38). Every hydrogen electrolyzer manufacturers list by country and city is linked on this page.

Which city has the most hydrogen electrolyzer manufacturers?

Augsburg leads with 2 headquartered companies, followed by Bend (2) and Berlin (2).

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 1,706 verified decision-maker contacts tracked across these 98 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 16, 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.