Company lists · Data refreshed September 2026

Top 25 Clean hydrogen developers based in Germany

Name: Clean hydrogen developers based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 122 companies tracked

RevenueBase identified 122 clean hydrogen developers headquartered in Germany as of September 2026 and tracks 2,730 professional contacts across them, including 1,411 with verified work emails. Berlin is the largest hub.

This list covers clean hydrogen developers headquartered in Germany, 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 19, 2026.

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 19, 2026 86% judged on-target in blind review

122Companies

2,730Contacts tracked

1,411Verified emails

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The 25 largest clean hydrogen developers based in Germany

Ranked by team size

Top 25 of 122 clean hydrogen developers based in Germany, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to clean hydrogen developers: 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	Indirect evidence	Dortmund, GermanyHQ checked Sep 19, 2026	1,001-5,000	691 contacts →
	Indirect evidence “thyssenkrupp nucera offers world-leading technologies for high-efficiency electrolysis plants.” Source: RevenueBase Database · checked Sep 19, 2026
2	Sunfire	Indirect evidence	Dresden, GermanyHQ checked Sep 19, 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 19, 2026
3	Quest ONE	Indirect evidence	Augsburg, GermanyHQ checked Sep 19, 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 19, 2026
4	Zentrum FÜR Brennstoffzellentechnik ZBT	Partial evidence	Duisburg, GermanyHQ checked Sep 19, 2026	51-200	100 contacts →
	Partial evidence “ZBT is working on technical solutions for our future energy system, specifically in the fields of fuel cells, hydrogen technologies and electrolysis.” Source: RevenueBase Database · checked Sep 19, 2026
5	H2apex	Indirect evidence	Rostock-laage, GermanyHQ checked Sep 19, 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 19, 2026
6	Fest Gmbh	Indirect evidence	Goslar, GermanyHQ checked Sep 19, 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 19, 2026
7	Maximator Hydrogen Gmbh	Partial evidence	Nordhausen, GermanyHQ checked Sep 19, 2026	51-200	74 contacts →
	Partial evidence “We are realizing Hydrogen Refueling Stations all over the world.” Source: RevenueBase Database · checked Sep 19, 2026
8	Hy2gen	Indirect evidence	Wiesbaden, GermanyHQ checked Sep 19, 2026	11-50	52 contacts →
	Indirect evidence “Hy2gen is a world leading company in developing, financing, building, and operating plants for RFNBO production.” Source: RevenueBase Database · checked Sep 19, 2026
9	KEYOU	Strong evidence	Munich, GermanyHQ checked Sep 19, 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 19, 2026
10	Enginius Gmbh	Indirect evidence	Bremen, GermanyHQ checked Sep 19, 2026	51-200	43 contacts →
	Indirect evidence “ENGINIUS steht für innovative alternative Antriebe made in Germany und eine saubere Zukunft.” Source: RevenueBase Database · checked Sep 19, 2026
11	Schrand	Indirect evidence	Essen, GermanyHQ checked Sep 19, 2026	51-200	41 contacts →
	Indirect evidence “Energiekonzepte für die nächsten Generationen.” Source: RevenueBase Database · checked Sep 19, 2026
12	Gas- UND Wärme-Institut Essen E.V. GWI	Indirect evidence	Essen, GermanyHQ checked Sep 19, 2026	51-200	40 contacts →
	Indirect evidence “GWI – Taking Responsibility for the Energy Transition Gas- und Wärme-Institut Essen e.V.(GWI) develops solutions for a climate-friendly energy future.” Source: RevenueBase Database · checked Sep 19, 2026
13	Hh2e	Indirect evidence	Hamburg, GermanyHQ checked Sep 19, 2026	51-200	35 contacts →
	Indirect evidence “We have known about the negative impact of carbon emissions for years.” Source: RevenueBase Database · checked Sep 19, 2026
14	Wenger Engineering	Strong evidence	Ulm, GermanyHQ checked Sep 19, 2026	11-50	31 contacts →
	Strong evidence “Wenger Engineering from Ulm, Germany is a leading global technology developer for hydrogen technology, renewable energies and energy efficiency.” Source: RevenueBase Database · checked Sep 19, 2026
15	EVETY	Indirect evidence	Essen, GermanyHQ checked Sep 19, 2026	11-50	29 contacts →
	Indirect evidence “Von Ingenieuren und Beratern gegründet, bündeln wir technisches, naturwissenschaftliches und organisatorisches Know-How.” Source: RevenueBase Database · checked Sep 19, 2026
16	Ceh4 Technologies Gmbh	Indirect evidence	Celle, GermanyHQ checked Sep 19, 2026	51-200	26 contacts →
	Indirect evidence “Stell Dir vor, Du könntest Vorhandenes nutzen, um Neues zu schaffen.” Source: RevenueBase Database · checked Sep 19, 2026
17	H2 Core Systems Gmbh	Partial evidence	Heide, GermanyHQ checked Sep 19, 2026	11-50	22 contacts →
	Partial 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 19, 2026
18	Siqens Gmbh	Partial evidence	München, GermanyHQ checked Sep 19, 2026	11-50	21 contacts →
	Partial evidence “Since 2012, SIQENS has been pioneering the development of innovative solutions for hydrogen infrastructure - wherever it is needed.” Source: RevenueBase Database · checked Sep 19, 2026
19	WEW Gmbh	Partial evidence	Dortmund, GermanyHQ checked Sep 19, 2026	11-50	19 contacts →
	Partial evidence “We make green hydrogen possible!” Source: RevenueBase Database · checked Sep 19, 2026
20	Argo-Anleg Gmbh	Indirect evidence	Wesel, GermanyHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence “Argo-Anleg GmbH is a medium-sized company that has specialized from an engineering office -focusing on special valve technology- to a worldwide recognized company with development…” Source: RevenueBase Database · checked Sep 19, 2026
21	Lifte H2	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	201-500	18 contacts →
	Indirect evidence “Founded in 2021, LIFTE H2 became part of px Group in 2024.” Source: RevenueBase Database · checked Sep 19, 2026
22	Hysolutions Gmbh	Indirect evidence	Hamburg, GermanyHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Die hySOLUTIONS GmbH ist ein 2005 gegründetes öffentlich-privates Unternehmen mit Gesellschaftern aus dem Mobilitäts- und Infrastruktursektor, der Energiebranche sowie der…” Source: RevenueBase Database · checked Sep 19, 2026
23	Hyson Institut	Indirect evidence	Sonneberg, GermanyHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Das HySON-Institut will die Entwicklung von Wasserstofftechnologien, Wasserstoffsystemen und den entsprechenden Infrastruktureinrichtungen voranbringen.” Source: RevenueBase Database · checked Sep 19, 2026
24	BHYO	Indirect evidence	Ludwigshafen Am Rhein, GermanyHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “Wir sind ein Green Energy Startup, das ein Verfahren entwickelt hat, um organischen Wasserstoff aus lokal anfallenden biogenen Reststoffen in einem dezentralen, CO2-negativen…” Source: RevenueBase Database · checked Sep 19, 2026
25	Wind-Projekt Ingenieur- UND Projektentwicklungsgesellschaft MBH	Indirect evidence	Rostock, GermanyHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “We embrace green energy.” Source: RevenueBase Database · checked Sep 19, 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: clean hydrogen developers. 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 clean hydrogen developers.
Partial evidence: Its own public description names part of clean hydrogen developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clean hydrogen developers. 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 122 clean hydrogen developers based in Germany

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Clean hydrogen developers based in Germany at a glance

As of Sep 19, 2026

51.7%Verified-email coverage

22.4Average contacts per company

11-50Median size (employees)

8.2%Largest-city concentration · Berlin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 122 companies.

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 clean hydrogen developers, 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.
What qualifies: Companies headquartered in Germany whose own description of what they do matches “clean hydrogen developers”. 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 clean hydrogen developers), 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 clean hydrogen developers, and records with no verified work email. Companies headquartered outside Germany are excluded even when they keep an office there.
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, 1,411 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 19, 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.

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 clean hydrogen developers, 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 clean hydrogen developers are there based in Germany?

RevenueBase identified 122 clean hydrogen developers headquartered in Germany 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 city has the most clean hydrogen developers?

Berlin leads with 10 headquartered companies, followed by Hamburg (10) and Essen (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 1,411 verified decision-maker contacts tracked across these 122 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 19, 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.