Company lists · Data refreshed September 2026

Top 25 Sustainable hydrogen manufacturers based in the United Kingdom

RevenueBase identified 91 company matches for sustainable hydrogen manufacturers associated with the United Kingdom as of September 2026 and tracks 5,617 professional contacts across them, including 2,164 with verified work emails. London is the largest hub.

This list covers company matches for sustainable hydrogen manufacturers associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 18, 2026 How this list was built
91Companies
5,617Contacts tracked
2,164Verified emails
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The 25 largest sustainable hydrogen manufacturers based in the United Kingdom

Ranked by team size
Top 25 of 91 company matches for sustainable hydrogen manufacturers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 18, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchKings Langley, United KingdomHQ recorded Sep 18, 20261,001-5,0003,721 contacts →

Exact match

“RES is the world’s largest independent renewable energy company, working across 24 countries and active in wind, solar, energy storage, green hydrogen, transmission, and…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
2Exact matchSheffield, United KingdomHQ recorded Sep 18, 2026201-500285 contacts →

Exact match

“ITM Power was founded in and ITM Power plc was admitted to the AIM market of the London Stock Exchange in 2004.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
3Exact matchCranleigh, United KingdomHQ recorded Sep 18, 202651-200149 contacts →

Exact match

“AFC Energy is the leading provider of Hydrogen fuel cell technology to generate clean off-grid energy.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
4Exact matchNewcastle, United KingdomHQ recorded Sep 18, 202651-200137 contacts →

Exact match

“GeoPura has a totally zero emissions answer to how we’re going to generate and distribute the vast amount of energy required to decarbonise our global economies.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
5Exact matchManchester, United KingdomHQ recorded Sep 18, 202651-20051 contacts →

Exact match

“YLEM Energy is a leading independent power generation specialist with more than three decades’ experience in building, owning and operating smart generation systems.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
6Exact matchDoncaster, United KingdomHQ recorded Sep 18, 202651-20050 contacts →

Exact match

“For too long, hydrogen was held back.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
7Exact matchStone, United KingdomHQ recorded Sep 18, 202651-20049 contacts →

Exact match

“We're focused on delivering products and solutions to the green energy industry with a strong focus on Hydrogen, Biomethane and Natural Gas.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
8Exact matchOxford, United KingdomHQ recorded Sep 18, 202651-20033 contacts →

Exact match

“Ryze Power provides complete solutions in the alternative fuels space as sectors transition towards net zero.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
9Exact matchEdinburgh, United KingdomHQ recorded Sep 18, 202611-5030 contacts →

Exact match

“Based in Scotland, Logan is a designer, supplier, and integrator of complete hydrogen production, refuelling, compression, storage, dispensing and fuel cell solutions.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
10Exact matchEast Wellow, United KingdomHQ recorded Sep 18, 2026201-50029 contacts →

Exact match

“Hive Energy is on a mission to save the planet.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
11Exact matchOxford, United KingdomHQ recorded Sep 18, 202611-5025 contacts →

Exact match

“Hygen is a leading developer, producer and asset owner of low-carbon hydrogen production facilities in the UK and Europe, focusing on the decarbonisation of mobility…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
12Exact matchEdinburgh, United KingdomHQ recorded Sep 18, 202611-5024 contacts →

Exact match

“Green Cat Hydrogen develops green hydrogen projects.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
13Exact matchBirmingham, United KingdomHQ recorded Sep 18, 202651-20023 contacts →

Exact match

“KEW Technology is a UK based sustainable energy solutions company.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
14Exact matchStanlow, United KingdomHQ recorded Sep 18, 202611-5022 contacts →

Exact match

“EET Hydrogen is a leading player in the energy transition and is developing the first large scale, low carbon hydrogen production hub in the UK.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
15Exact matchStokesley, United KingdomHQ recorded Sep 18, 202611-5021 contacts →

Exact match

“Carlton Power Group is an independent, UK energy development company formed in 1995, with offices in Stokesley, North Yorkshire and Edinburgh.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
16Exact matchLeeds, United KingdomHQ recorded Sep 18, 202611-5016 contacts →

Exact match

“At N-Gen, we’re helping our customers to lead the race towards decarbonisation with low carbon hydrogen.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5014 contacts →

Exact match

“Oort Energy is a manufacturer of green hydrogen systems for energy storage and clean fuel.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 18, 20261-1013 contacts →

Exact match

“Regener8 Power is a sustainable and ethical renewable energy company.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
19Exact matchEdinburgh, United KingdomHQ recorded Sep 18, 20261-1010 contacts →

Exact match

“PlusZero Ltd is Making Hydrogen Happen - Our PlusZero Energy brand produces green hydrogen, with our first production site in the Outer Hebrides, the most rapidly scalable…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
20Exact matchGlasgow, United KingdomHQ recorded Sep 18, 20261-109 contacts →

Exact match

“Clyde Hydrogen System’s breakthrough decoupled electrolysis technology delivers high pressure green hydrogen at scale and at low cost.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
21Exact matchCranfield University, United KingdomHQ recorded Sep 18, 20261-109 contacts →

Exact match

“HyWaves' goal is to increase locally produced hydrogen by simplifying solar to hydrogen power electronics and enhancing electrolysers to increase green hydrogen production.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
22Exact matchKington St. Michael, United KingdomHQ recorded Sep 18, 202611-508 contacts →

Exact match

“Elemental Energy enables 24/7 power at scale, on or off the grid, using a combination of renewables, battery storage, and hydrogen technology in an integrated, compact power unit.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
23Exact matchWallyford, United KingdomHQ recorded Sep 18, 20261-108 contacts →

Exact match

“At H2Tec, we are enabling an ultra-low and zero-emission future for power, heat and transport.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
24Exact matchCrowthorne, United KingdomHQ recorded Sep 18, 20261-107 contacts →

Exact match

“HyEnergy is a consultancy specialising in the pulling together of the disparate hydrogen and energy communities to foster, deliver and understand opportunities for new technical…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 18, 20261-107 contacts →

Exact match

“First Hydrogen is fast becoming the leading designer and manufacturer of zero-emission, long-range hydrogen-powered utility vehicles.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase

Showing 25 of 91 sustainable hydrogen manufacturers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 2,164 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Sustainable hydrogen manufacturers based in the United Kingdom at a glance

As of Sep 18, 2026
38.5%Verified-email coverage
61.7Average contacts per company
11-50Median size (employees)
22.0%Largest-city concentration · London
Sep 18, 2026Page data refreshed

Companies by employee count

1-10
45
11-50
28
51-200
11
201-500
5
501-1,000
1
1,001-5,000
1

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 91 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “sustainable hydrogen manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,164 professional contacts with verified work emails across the full matched dataset. 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 18, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “sustainable hydrogen manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many sustainable hydrogen manufacturers are there based in the United Kingdom?

RevenueBase identified 91 company matches for sustainable hydrogen manufacturers associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

RES tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most sustainable hydrogen manufacturers?

London leads with 20 company records, followed by Edinburgh (4) and Manchester (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,164 professional contacts with verified work emails tracked across these 91 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 18, 2026.

Ready to reach these companies? Verified emails and direct dials for all 91 sustainable hydrogen manufacturers based in the United Kingdom. Start with a free account, no credit card.

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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 SmartSearch, 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.