Company lists · Data refreshed September 2026

Top 25 Hydrogen electrolysis companies based in the United States

RevenueBase identified 156 company matches for hydrogen electrolysis companies associated with the United States as of September 2026 and tracks 2,027 professional contacts across them, including 822 with verified work emails. Houston is the largest hub.

This list covers company matches for hydrogen electrolysis companies associated with the United States, 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 20, 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 20, 2026 How this list was built
156Companies
2,027Contacts tracked
822Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest hydrogen electrolysis companies based in the United States

Ranked by team size
Top 25 of 156 company matches for hydrogen electrolysis companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 matchDevens, MA, United StatesHQ recorded Sep 20, 2026201-500346 contacts →

Exact match

“Electric Hydrogen manufactures, delivers and commissions the world’s most powerful electrolyzers to make clean hydrogen projects economically viable today.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchBenicia, CA, United StatesHQ recorded Sep 20, 202651-200152 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchLongview, NC, United StatesHQ recorded Sep 20, 202651-200130 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchBolingbrook, MI, United StatesHQ recorded Sep 20, 2026201-50088 contacts →

Exact match

“Hyzon (NASDAQ:HYZN) is a global supplier of high-performance hydrogen fuel cell technology focused on providing zero-emission power to decarbonize demanding industries.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchMoss Landing, CA, United StatesHQ recorded Sep 20, 202651-20076 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchPalo Alto, CA, United StatesHQ recorded Sep 20, 2026n/a45 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchSanta Clara, CA, United StatesHQ recorded Sep 20, 202611-5041 contacts →

Exact match

“Founded in 2020, EVOLOH Inc.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchTitusville, FL, United StatesHQ recorded Sep 20, 202651-20037 contacts →

Exact match

“GenH2 is a technology leader in liquid hydrogen infrastructure systems, delivering breakthrough solutions to accelerate the clean energy transition.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchIthaca, NY, United StatesHQ recorded Sep 20, 202611-5035 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchGreenville, SC, United StatesHQ recorded Sep 20, 202611-5032 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchMilwaukee, WI, United StatesHQ recorded Sep 20, 202611-5031 contacts →

Exact match

“Green hydrogen today is too expensive, driven by sunk costs in fossil technologies, existing infrastructure, and decades of doing things the old way.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchColumbus, OH, United StatesHQ recorded Sep 20, 202611-5031 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchIvyland, PA, United StatesHQ recorded Sep 20, 202611-5030 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchWilmington, DE, United StatesHQ recorded Sep 20, 202611-5026 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchOrange, CA, United StatesHQ recorded Sep 20, 202651-20025 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchTullahoma, TN, United StatesHQ recorded Sep 20, 202611-5024 contacts →

Exact match

“GTL is a high-technology company specializing in providing strategic technology breakthroughs and game-changing products to the Hydrogen Economy and the Transportation, Aviation…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchCranbury, NJ, United StatesHQ recorded Sep 20, 202611-5021 contacts →

Exact match

“Brilliant Light Power, Inc is the inventor of a new primary energy source with applications to heating, distributed and central power generation, and motive power.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchEmeryville, CA, United StatesHQ recorded Sep 20, 202611-5020 contacts →

Exact match

“Aepnus Technology is reinventing chemical manufacturing to eliminate waste and secure domestic supply chains.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchChatsworth, CA, United StatesHQ recorded Sep 20, 202611-5016 contacts →

Exact match

“Calicat (formerly known as H2U Technologies) is redefining hydrogen production through innovative catalyst development and advanced electrolyzer components.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202611-5016 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchRichland, WA, United StatesHQ recorded Sep 20, 202611-5015 contacts →

Exact match

“OCOchem is developing and commercializing CO2 electrolysis technology to make hydrogen formate using recycled CO2, water, and clean electricity.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchTorrance, CA, United StatesHQ recorded Sep 20, 202611-5015 contacts →

Exact match

“Equatic is on a mission to power the green economy by revolutionizing carbon management and clean energy solutions.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchPark City, UT, United StatesHQ recorded Sep 20, 202611-5015 contacts →

Exact match

“Q Hydrogen is redefining the future of energy through the development of our innovative Q Hydrogen -sustainable, cost-effective, and highly-efficient.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchKennedy Space Center, FL, United StatesHQ recorded Sep 20, 202611-5015 contacts →

Exact match

“Joi Scientific was founded by a group of global business leaders, technologists and social entrepreneurs who believe that plentiful hydrogen holds the key to giving the world a…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchLemont, IL, United StatesHQ recorded Sep 20, 20261-1014 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 156 hydrogen electrolysis companies based in the United States

See the full list, filter by size, metro and specialty, and access 822 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Hydrogen electrolysis companies based in the United States at a glance

As of Sep 20, 2026
40.6%Verified-email coverage
13.0Average contacts per company
1-10Median size (employees)
5.1%Largest-city concentration · Houston
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
88
11-50
53
51-200
11
201-500
3
1,001-5,000
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 156 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 States whose business descriptions match “hydrogen electrolysis companies” 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 822 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 20, 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 “hydrogen electrolysis companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hydrogen electrolysis companies are there based in the United States?

RevenueBase identified 156 company matches for hydrogen electrolysis companies associated with the United States 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?

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

Which city has the most hydrogen electrolysis companies?

Houston leads with 8 company records, followed by New York (8) and Austin (5).

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 822 professional contacts with verified work emails tracked across these 156 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 156 hydrogen electrolysis companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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.