Company lists · Data refreshed September 2026

Top 25 Clean hydrogen developers based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 60 companies tracked

RevenueBase identified 60 clean hydrogen developers headquartered in France as of September 2026 and tracks 1,856 professional contacts across them, including 825 with verified work emails. Paris is the largest hub.

This list covers clean hydrogen developers headquartered in France, 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

60Companies

1,856Contacts tracked

825Verified emails

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The 25 largest clean hydrogen developers based in France

Ranked by team size

Top 25 of 60 clean hydrogen developers based in France, 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	LHYFE	Indirect evidence	Nantes, FranceHQ checked Sep 19, 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 19, 2026
2	Symbio	Indirect evidence	St.-Fons, FranceHQ checked Sep 19, 2026	501-1,000	149 contacts →
	Indirect evidence “Symbio is a leading technology and industrial partner for sustainable mobility pioneers.” Source: RevenueBase Database · checked Sep 19, 2026
3	MCPHY	Partial evidence	Foussemagne, FranceHQ checked Sep 19, 2026	201-500	145 contacts →
	Partial 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 19, 2026
4	Genvia	Indirect evidence	Béziers, FranceHQ checked Sep 19, 2026	51-200	144 contacts →
	Indirect evidence “Today, and for decades, global warming is a reality.” Source: RevenueBase Database · checked Sep 19, 2026
5	HDF Energy	Partial evidence	Blanquefort, FranceHQ checked Sep 19, 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 19, 2026
6	Sofregaz SAS	Indirect evidence	Puteaux, FranceHQ checked Sep 19, 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 19, 2026
7	Engie LAB Crigen	Partial evidence	Stains, FranceHQ checked Sep 19, 2026	51-200	120 contacts →
	Partial evidence “The Lab CRIGEN is part of the ENGIE Labs network, is ENGIE Group’s corporate center for R&D and high-level expertise devoted to new energy resources (hydrogen, biogas and…” Source: RevenueBase Database · checked Sep 19, 2026
8	Verso Energy	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	73 contacts →
	Indirect evidence “Verso Energy est spécialisée dans le développement, l’ingénierie, le financement, la construction et l’exploitation d’installations de production d’énergies renouvelables…” Source: RevenueBase Database · checked Sep 19, 2026
9	45-8 Energy	Partial evidence	Metz, FranceHQ checked Sep 19, 2026	11-50	65 contacts →
	Partial evidence “L’entreprise européenne pionnière sur l’exploration et la production d’hélium et d’hydrogène naturel!” Source: RevenueBase Database · checked Sep 19, 2026
10	HSL Technologies Hysilabs	Partial evidence	Aix En Provence, FranceHQ checked Sep 19, 2026	11-50	49 contacts →
	Partial evidence “HSL Technologies (SAS HySiLabs) is a French deeptech company based in Aix-en-Provence, developing low-carbon hydrogen and silica production, storage, and transport solutions.” Source: RevenueBase Database · checked Sep 19, 2026
11	Helion Hydrogen Power	Partial evidence	Aix En Provence Cedex 4, FranceHQ checked Sep 19, 2026	51-200	39 contacts →
	Partial evidence “With over 20 years of experience, HELION Hydrogen Power, subsidiary of Alstom, is a leading high-power hydrogen fuel cell manufacturer based in Aix-en-Provence, France.” Source: RevenueBase Database · checked Sep 19, 2026
12	Bulane	Partial evidence	Fabregues, FranceHQ checked Sep 19, 2026	11-50	39 contacts →
	Partial evidence “Bulane s'engage à démocratiser l'usage de l'hydrogène décarboné, en facilitant son accès et en accompagnant son adoption par tous.” Source: RevenueBase Database · checked Sep 19, 2026
13	Hydrogain	Partial evidence	Lyon, FranceHQ checked Sep 19, 2026	11-50	32 contacts →
	Partial evidence “HydroGain is an engineering company and a training organization, born in Lyon at the heart of the Rhône-Alpes hydrogen ecosystem.” Source: RevenueBase Database · checked Sep 19, 2026
14	H2x-Ecosystems	Partial evidence	Bruz, FranceHQ checked Sep 19, 2026	11-50	30 contacts →
	Partial evidence “H2X-Ecosystems est une entreprise spécialisée dans les solutions de production, distribution et consommation d'hydrogène renouvelable et bas carbone.” Source: RevenueBase Database · checked Sep 19, 2026
15	Powidian Energy	Partial evidence	La Ville-aux-dames, FranceHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “Société pionnière des solutions de production et de stockage de l’énergie produite via hydrogène « vert », PowiDian Energy œuvre pour la transition écologique des territoires…” Source: RevenueBase Database · checked Sep 19, 2026
16	H2v	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “H2V invests in, develops and builds large scale production of green hydrogen and its derivatives, e-methanol and e-kerosene, to decarbonize sectors with a particularly high CO2…” Source: RevenueBase Database · checked Sep 19, 2026
17	Eco-Tech Ceram	Indirect evidence	Balma, FranceHQ checked Sep 19, 2026	11-50	29 contacts →
	Indirect evidence “More than 50% of energy is consumed in the form of heat and more than a third of the energy consumed is lost as heat (equivalent to 2450 Mt of CO2 per year).” Source: RevenueBase Database · checked Sep 19, 2026
18	Staaq Technology	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	26 contacts →
	Partial evidence “We are a team of hydrogen technologies professionals dedicated to the green hydrogen economy.” Source: RevenueBase Database · checked Sep 19, 2026
19	Gen-Hy	Partial evidence	Orly, FranceHQ checked Sep 19, 2026	11-50	24 contacts →
	Partial evidence “To this end, we have designed a unique high-efficiency system that covers the entire hydrogen value chain: from hydrogen production using decarbonated energy, to its end use in…” Source: RevenueBase Database · checked Sep 19, 2026
20	H2gremm	Partial evidence	Edern, FranceHQ checked Sep 19, 2026	11-50	23 contacts →
	Partial evidence “H2Gremm redefines the future of energy by placing hydrogen at the heart of sustainable mobility and energy autonomy for buildings.” Source: RevenueBase Database · checked Sep 19, 2026
21	EHM	Partial evidence	Chateaulin, FranceHQ checked Sep 19, 2026	11-50	22 contacts →
	Partial evidence “Founded in 2022 and located in Brittany, between Brest and Châteaulin, EHM stands as a pioneer in the development of hydrogen propulsion solutions.” Source: RevenueBase Database · checked Sep 19, 2026
22	H2pulse	Partial evidence	Toulouse Cedex 09, FranceHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “En association avec la Plateforme Hydrogène, Toulouse et le laboratoire Laplace, H2PULSE accélère le transfert du savoir-faire & des résultats de la recherche vers le monde de…” Source: RevenueBase Database · checked Sep 19, 2026
23	Eifhytec	Indirect evidence	Strasbourg, FranceHQ checked Sep 19, 2026	1-10	13 contacts →
	Indirect evidence “EIFHYTEC is a European industrial company based in Strasbourg, France, which brings together passionates of the energy transition around a common project: contributing to the…” Source: RevenueBase Database · checked Sep 19, 2026
24	Arhyze	Partial evidence	Bordeaux, FranceHQ checked Sep 19, 2026	1-10	6 contacts →
	Partial evidence “Producteur indépendant d'hydrogène et d'électricité renouvelables, Arhyze est le partenaire d'une transition énergétique locale et durable.” Source: RevenueBase Database · checked Sep 19, 2026
25	Promethys Engineering	Partial evidence	Échirolles, FranceHQ checked Sep 19, 2026	1-10	6 contacts →
	Partial evidence “Promethys Engineering converts customers technologies into safe, reliable, industrializable and technologically mature hydrogen products.” 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 60 clean hydrogen developers based in France

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Clean hydrogen developers based in France at a glance

As of Sep 19, 2026

44.5%Verified-email coverage

30.9Average contacts per company

11-50Median size (employees)

16.7%Largest-city concentration · Paris

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 60 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 France 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 France 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, 825 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 France?

RevenueBase identified 60 clean hydrogen developers headquartered in France 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?

LHYFE, headquartered in Nantes, tops this list with the largest team on record.

Which city has the most clean hydrogen developers?

Paris leads with 10 headquartered companies, followed by Lyon (5) and Aix En Provence (3).

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 825 verified decision-maker contacts tracked across these 60 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.