Company lists · Data refreshed September 2026

Top 25 Flow battery technology companies based in the United States

Name: Flow battery technology companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 329 companies tracked

RevenueBase identified 329 flow battery technology companies headquartered in the United States as of September 2026 and tracks 20,106 professional contacts across them, including 7,827 with verified work emails. Houston is the largest hub.

This list covers flow battery technology companies 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, 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

329Companies

20,106Contacts tracked

7,827Verified emails

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The 25 largest flow battery technology companies based in the United States

Ranked by team size

Top 25 of 329 flow battery technology companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to flow battery technology companies: 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	Clarios	Strong evidence	Glendale, WI, United StatesHQ checked Sep 19, 2026	10001+	5,032 contacts →
	Strong evidence “Clarios creates the most advanced battery technologies for virtually every type of vehicle.” Source: RevenueBase Database · checked Sep 19, 2026
2	Fluence	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,863 contacts →
	Indirect evidence “To achieve our mission, we design, deploy, and operate the world’s most advanced modular energy storage products, comprehensive lifecycle services, and AI-enabled asset management…” Source: RevenueBase Database · checked Sep 19, 2026
3	Form Energy	Partial evidence	Somerville, MA, United StatesHQ checked Sep 19, 2026	501-1,000	807 contacts →
	Partial evidence “Form Energy is an American company driving innovation in energy technology and manufacturing.” Source: RevenueBase Database · checked Sep 19, 2026
4	Stryten Energy	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 19, 2026	1,001-5,000	677 contacts →
	Indirect evidence “Stryten Energy helps solve the world’s most pressing energy challenges with a broad range of energy storage solutions across the Essential Power, Motive Power, Transportation…” Source: RevenueBase Database · checked Sep 19, 2026
5	Quantumscape	Strong evidence	San Jose, CA, United StatesHQ checked Sep 19, 2026	501-1,000	658 contacts →
	Strong evidence “QuantumScape is on a mission to transform energy storage with solid-state lithium-metal battery technology.” Source: RevenueBase Database · checked Sep 19, 2026
6	Strata Clean Energy	Indirect evidence	Durham, NC, United StatesHQ checked Sep 19, 2026	501-1,000	631 contacts →
	Indirect evidence “Strata Clean Energy is a fully integrated energy infrastructure company serving utilities, independent power producers, and hyperscalers navigating the rapid transformation of the…” Source: RevenueBase Database · checked Sep 19, 2026
7	Trojan Battery Company	Partial evidence	Santa Fe Springs, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	537 contacts →
	Partial evidence “Founded in 1925 by co-founders George Godber and Carl Speer, Trojan Battery Company is the world’s leading manufacturer of deep-cycle batteries.” Source: RevenueBase Database · checked Sep 19, 2026
8	A123 Systems	Partial evidence	Novi, MI, United StatesHQ checked Sep 19, 2026	1,001-5,000	530 contacts →
	Partial evidence “A123 Systems, LLC develops and manufactures advanced Nanophosphate® lithium iron phosphate batteries and energy storage systems that deliver high power, maximize usable energy…” Source: RevenueBase Database · checked Sep 19, 2026
9	EOS Energy Enterprises, INC	Indirect evidence	Edison, NJ, United StatesHQ checked Sep 19, 2026	501-1,000	435 contacts →
	Indirect evidence “Eos is on a mission to build a future with limitless energy-with abundant energy that is reliable enough to fuel humanity’s limitless potential.” Source: RevenueBase Database · checked Sep 19, 2026
10	ESS	Indirect evidence	Wilsonville, OR, United StatesHQ checked Sep 19, 2026	201-500	354 contacts →
	Indirect evidence “ESS, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
11	Group14 Technologies	Partial evidence	Woodinville, WA, United StatesHQ checked Sep 19, 2026	201-500	282 contacts →
	Partial evidence “Founded with the vision to electrify everything, Group14 is the leading commercial manufacturer of advanced silicon battery materials.” Source: RevenueBase Database · checked Sep 19, 2026
12	LG Energy Solution Vertech, INC	Indirect evidence	Westborough, MA, United StatesHQ checked Sep 19, 2026	51-200	244 contacts →
	Indirect evidence “LG Energy Solution Vertech, Inc.(LGES Vertech) delivers exceptional customer engagement throughout every stage of acquiring, installing, and operating advanced, reliable, and…” Source: RevenueBase Database · checked Sep 19, 2026
13	POWIN	Indirect evidence	Tualatin, OR, United StatesHQ checked Sep 19, 2026	501-1,000	242 contacts →
	Indirect evidence “Since 2010, Powin has been working to mitigate the economic and environmental impacts of climate change by revolutionizing the way energy is generated, transmitted, and…” Source: RevenueBase Database · checked Sep 19, 2026
14	OUR Next Energy ONE	Partial evidence	Novi, MI, United StatesHQ checked Sep 19, 2026	201-500	224 contacts →
	Partial evidence “Our Next Energy (ONE) is paving the way for an electric future, innovating energy storage technologies that will rapidly expand the world’s ability to access sustainable power for…” Source: RevenueBase Database · checked Sep 19, 2026
15	Jupiter Power	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	51-200	188 contacts →
	Indirect evidence “Jupiter Power is putting deep energy storage expertise, proven project execution capability, and significant capital to work to help make the energy transition a reality.” Source: RevenueBase Database · checked Sep 19, 2026
16	Plus Power	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	172 contacts →
	Partial evidence “The Plus Power team, led by seasoned executives from the renewables and energy storage industry, is accelerating the deployment of transmission-connected battery storage…” Source: RevenueBase Database · checked Sep 19, 2026
17	Navitas Systems, LLC	Partial evidence	Ann Arbor, MI, United StatesHQ checked Sep 19, 2026	51-200	157 contacts →
	Partial evidence “Manufacturer of Deka Ready Power lithium batteries.” Source: RevenueBase Database · checked Sep 19, 2026
18	24m Technologies	Strong evidence	Cambridge, MA, United StatesHQ checked Sep 19, 2026	201-500	145 contacts →
	Strong evidence “24M answers the world’s need for affordable energy storage by offering a revolutionary battery manufacturing and product design platform, technology set and process enabled by the…” Source: RevenueBase Database · checked Sep 19, 2026
19	Convergent Energy And Power	Indirect evidence	New York, United StatesHQ checked Sep 19, 2026	51-200	143 contacts →
	Indirect evidence “Convergent Energy and Power manages all aspects of energy storage development for its grid operator, utility, and industrial customers.” Source: RevenueBase Database · checked Sep 19, 2026
20	Microvast	Partial evidence	Stafford, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	139 contacts →
	Partial evidence “Founded in Stafford, Texas in 2006 as a research and technology driven company, Microvast Holdings, Inc.(Nasdaq: MVST) has evolved into a global leader in the design, development…” Source: RevenueBase Database · checked Sep 19, 2026
21	Lion Energy	Indirect evidence	American Fork, UT, United StatesHQ checked Sep 19, 2026	51-200	138 contacts →
	Indirect evidence “Lion Energy is building the future of intelligent energy infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
22	TAE Power Solutions	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 19, 2026	201-500	129 contacts →
	Indirect evidence “TAE Power Solutions is born of fusion.” Source: RevenueBase Database · checked Sep 19, 2026
23	Esvolta, LP	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 19, 2026	51-200	119 contacts →
	Indirect evidence “Focused on sustainability and innovation, esVolta develops, owns, and operates reliable utility-scale energy storage assets across the entire lifecycle - delivering value for…” Source: RevenueBase Database · checked Sep 19, 2026
24	Peak Energy	Indirect evidence	San Francisco Bay, CA, United StatesHQ checked Sep 19, 2026	51-200	117 contacts →
	Indirect evidence “Peak Energy is an American venture setting the standard in low-cost, giga-scale storage for the new era of clean, affordable, and reliable energy.” Source: RevenueBase Database · checked Sep 19, 2026
25	KEY Capture Energy	Indirect evidence	Albany, NY, United StatesHQ checked Sep 19, 2026	51-200	114 contacts →
	Indirect evidence “Key Capture Energy identifies, develops, constructs and operates energy storage solutions to foster greater deployment of renewable energy, create a more stable electric grid, and…” 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: flow battery technology companies. 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 flow battery technology companies.
Partial evidence: Its own public description names part of flow battery technology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name flow battery technology companies. 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 329 flow battery technology companies based in the United States

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Flow battery technology companies based in the United States at a glance

As of Sep 19, 2026

38.9%Verified-email coverage

61.1Average contacts per company

11-50Median size (employees)

4.0%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

105

11-50

115

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 329 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 flow battery technology companies, 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 the United States whose own description of what they do matches “flow battery technology companies”. 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 flow battery technology companies), 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 flow battery technology companies, 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 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, 7,827 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 flow battery technology companies, 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 flow battery technology companies are there based in the United States?

RevenueBase identified 329 flow battery technology companies 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?

Clarios, headquartered in Glendale, tops this list with the largest team on record.

Which city has the most flow battery technology companies?

Houston leads with 13 headquartered companies, followed by New York (11) and Chicago (7).

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 7,827 verified decision-maker contacts tracked across these 329 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.