Company lists · Data refreshed September 2026
Top 25 Fuel cell power systems integrators based in the United States
RevenueBase identified 63 fuel cell power systems integrators headquartered in the United States as of September 2026 and tracks 2,169 professional contacts across them, including 542 with verified work emails and 748 with mobile numbers. Houston is the largest hub.
This list covers fuel cell power systems integrators headquartered in the United States, 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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.
The 25 largest fuel cell power systems integrators based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 597 | ||||
“OWL™ Services is the premier sales, installation, program management, compliance and service provider to industrial, commercial fleet, municipal and electrical vehicle charging…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 91 | ||||
“FC TecNrgy Pvt Ltd (FCT) is an India-based, leading private-sector Fuel Cells and Sustainable Energy & IT Solutions Enterprise.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 80 | ||||
“Fueling and Service Technologies, Inc.(FASTECH) is an end-to-end energy solutions company.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | RACKIndirect evidence | 51 | |||
“RACK is a leading energy solutions provider headquartered in Boca Raton, Florida.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 40 | ||||
“FFC manufactures New PMA fuel cells, and overhauls / repairs fuel cells for all aircraft platforms.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | Total Energy SolutionsStrong evidence | 34 | |||
“Total Energy Systems (TES) is a leading provider of integrated power generation solutions with market leading equipment, engineering and support guaranteeing dependable and…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 31 | ||||
“Infintium Fuel Cell Systems is an original designer and manufacturer of the next generation of zero emission Hydrogen Power Cells for motive applications.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 30 | ||||
“Telecom Backup Power Founded in 1996 as Northwest Power Systems, H2 PowerTech (formerly IdaTech) provides industry leading reformer, hydrogen production, and fuel cell technology…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | Sunrise Power SolutionsPartial evidence | 29 | |||
“Sunrise Power Solutions is a clean energy contractor providing innovative energy solutions to our customers in the key markets that we serve: municipal, K12 educational and…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | UST Fuel SolutionsPartial evidence | 19 | |||
“UST Fuel Solutions is headquartered in Southlake, TX with an office strategically located in Olathe, Kansas.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 16 | ||||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | SK Ecoplant AmericasStrong evidence | 16 | |||
“Manage full cycle of fuel cell projects from Engineering, Procurement, and Construction, Financing.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | Neoex Systems, INCStrong evidence | 16 | |||
“We provide on-board liquid hydrogen energy storage and fuel cell power system integration services to unmanned aerial vehicle (UAV) manufacturers.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 15 | ||||
“Serving the Intermountain West since 2004, Gardner Energy designs, builds, and maintains state-of-the-art energy systems-from off-grid home solar to commercial battery backup…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | Renewable Innovations INCPartial evidence | 14 | |||
“Every day, we’re moving one step closer to a more sustainable and manageable power future.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 9 | ||||
“Developing hydrogen fuel cell powerplants for electric propulsion and mobile energy storage.#eMissionH2O” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 | ||||
“Granite Petroleum is a construction company specializing in fuel systems: Retail fuel stations, commercial fuel stations, government fuel systems, mission critical fuel systems…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 7 | ||||
“FuelCellsEtc specializes in providing highly customized Fuel Cell and Electrolyzer components.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 6 | ||||
“Gentiam specializes in the development and integration of hybrid and electric power systems for aerospace, defense, mobility, and mission-critical energy applications.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | Nimbus Power SystemsStrong evidence | 5 | |||
“Our mission is to build a cleaner world through design and integration of zero-emission fuel cell systems for heavy-duty markets.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 | ||||
“Altergy Systems®, the global leader in reliable backup power solutions for telecom and critical power applications, delivers proven fuel cell technology that provides on-demand…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | Trillium Energy SolutionsPartial evidence | 4 | |||
“Trillium, a member of the Love's Family of Companies, is a leading provider of renewable fuels and alternative fueling solutions, specializing in fuel supply, design…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | Proof EnergyStrong evidence | 4 | |||
“We are revolutionizing power generation using readily available renewable fuels.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 | ||||
“Future Fuels is a family-owned turn-key alternative energy solutions company.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | Point Energy SolutionsIndirect evidence | 3 | |||
“Point Energy Solutions is an on-site energy company.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 63 fuel cell power systems integrators based in the United States
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Fuel cell power systems integrators based in the United States at a glance
As of Sep 3, 2026Companies by employee count
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 fuel cell power systems integrators, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “fuel cell power systems integrators”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among fuel cell power systems integrators, and records with no verified work email. Companies headquartered outside United States 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 an evidence 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, 542 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 3, 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
How many fuel cell power systems integrators are there based in the United States?
RevenueBase identified 63 fuel cell power systems integrators headquartered in the United States 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?
OWL Services, headquartered in Irving, tops this list with the largest team on record.
Which city has the most fuel cell power systems integrators?
Houston leads with 3 headquartered companies, followed by Buena Park (2) and South Windsor (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 542 verified decision-maker contacts tracked across these 63 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 3, 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 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.
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