Company lists · Data refreshed September 2026

Top 25 Grid scale energy storage based in the United States

Name: Grid scale energy storage based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 384 companies tracked

RevenueBase identified 384 grid scale energy storage headquartered in the United States as of September 2026 and tracks 17,892 professional contacts across them, including 7,317 with verified work emails. New York is the largest hub.

This list covers grid scale energy storage 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 16, 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 16, 2026 86% judged on-target in blind review

384Companies

17,892Contacts tracked

7,317Verified emails

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The 25 largest grid scale energy storage based in the United States

Ranked by team size

Top 25 of 384 grid scale energy storage based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to grid scale energy storage: 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	Fluence	Strong evidence	Arlington, VA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,863 contacts →
	Strong 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 16, 2026
2	Mitsubishi Power Americas	Indirect evidence	Lake Mary, FL, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,859 contacts →
	Indirect evidence “Mitsubishi Power Americas is creating a future that works for people and the planet through innovative power generation technology and solutions.” Source: RevenueBase Database · checked Sep 16, 2026
3	Redwood Materials	Indirect evidence	Carson City, NV, United StatesHQ checked Sep 16, 2026	1,001-5,000	865 contacts →
	Indirect evidence “Redwood Materials is building the U.S.” Source: RevenueBase Database · checked Sep 16, 2026
4	Form Energy	Partial evidence	Somerville, MA, United StatesHQ checked Sep 16, 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 16, 2026
5	Strata Clean Energy	Partial evidence	Durham, NC, United StatesHQ checked Sep 16, 2026	501-1,000	631 contacts →
	Partial 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 16, 2026
6	EOS Energy Enterprises, INC	Partial evidence	Edison, NJ, United StatesHQ checked Sep 16, 2026	501-1,000	435 contacts →
	Partial 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 16, 2026
7	Supernova	Partial evidence	Irvine, CA, United StatesHQ checked Sep 16, 2026	201-500	370 contacts →
	Partial evidence “Supernova embodies the spirit of innovation and dedication to a sustainable future, making it a shining example of what it means to be a leader in the renewable energy industry.” Source: RevenueBase Database · checked Sep 16, 2026
8	ESS	Indirect evidence	Wilsonville, OR, United StatesHQ checked Sep 16, 2026	201-500	354 contacts →
	Indirect evidence “ESS, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
9	Silicon Ranch Corporation	Strong evidence	Nashville, TN, United StatesHQ checked Sep 16, 2026	51-200	279 contacts →
	Strong evidence “Founded in 2011, Silicon Ranch is a fully integrated provider of customized renewable energy, carbon, and battery storage solutions for a diverse set of partners across North…” Source: RevenueBase Database · checked Sep 16, 2026
10	Flexgen	Strong evidence	Durham, NC, United StatesHQ checked Sep 16, 2026	201-500	271 contacts →
	Strong evidence “FlexGen delivers the best integrated energy storage systems by taking a functionality and software-first approach.” Source: RevenueBase Database · checked Sep 16, 2026
11	Malta INC	Indirect evidence	Cambridge, MA, United StatesHQ checked Sep 16, 2026	n/a	264 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
12	Base Power Company	Indirect evidence	Austin, TX, United StatesHQ checked Sep 16, 2026	201-500	248 contacts →
	Indirect evidence “Base is building the future of American power.” Source: RevenueBase Database · checked Sep 16, 2026
13	LG Energy Solution Vertech, INC	Partial evidence	Westborough, MA, United StatesHQ checked Sep 16, 2026	51-200	244 contacts →
	Partial 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 16, 2026
14	Antora Energy	Strong evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	201-500	242 contacts →
	Strong evidence “Antora Energy delivers affordable, reliable energy to industry, data centers, and the grid.” Source: RevenueBase Database · checked Sep 16, 2026
15	POWIN	Partial evidence	Tualatin, OR, United StatesHQ checked Sep 16, 2026	501-1,000	242 contacts →
	Partial 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 16, 2026
16	OUR Next Energy ONE	Strong evidence	Novi, MI, United StatesHQ checked Sep 16, 2026	201-500	224 contacts →
	Strong 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 16, 2026
17	Energy Vault	Partial evidence	Westlake Village, VA, United StatesHQ checked Sep 16, 2026	51-200	203 contacts →
	Partial evidence “Energy Vault® is an integrated power infrastructure platform that builds, owns and operates flexible, reliable energy systems to accelerate time-to-power for utilities…” Source: RevenueBase Database · checked Sep 16, 2026
18	Clēnera	Strong evidence	Boise, ID, United StatesHQ checked Sep 16, 2026	51-200	190 contacts →
	Strong evidence “Clenera, LLC (“Clēnera”), a subsidiary of Enlight Renewable Energy, LTD, is a developer of utility-scale solar and energy storage facilities headquartered in Boise, Idaho.” Source: RevenueBase Database · checked Sep 16, 2026
19	Jupiter Power	Strong evidence	Austin, TX, United StatesHQ checked Sep 16, 2026	51-200	188 contacts →
	Strong 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 16, 2026
20	Plus Power	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	51-200	172 contacts →
	Strong 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 16, 2026
21	Convergent Energy And Power	Strong evidence	New York, United StatesHQ checked Sep 16, 2026	51-200	143 contacts →
	Strong 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 16, 2026
22	Lion Energy	Partial evidence	American Fork, UT, United StatesHQ checked Sep 16, 2026	51-200	138 contacts →
	Partial evidence “Lion Energy is building the future of intelligent energy infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
23	Firstlight	Strong evidence	Burlington, MA, United StatesHQ checked Sep 16, 2026	51-200	124 contacts →
	Strong evidence “FirstLight Power (FirstLight) is a leading clean power producer, developer, and energy storage company serving North America.” Source: RevenueBase Database · checked Sep 16, 2026
24	Esvolta, LP	Strong evidence	Newport Beach, CA, United StatesHQ checked Sep 16, 2026	51-200	119 contacts →
	Strong 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 16, 2026
25	Peak Energy	Strong evidence	San Francisco Bay, CA, United StatesHQ checked Sep 16, 2026	51-200	117 contacts →
	Strong 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 16, 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: grid scale energy storage. 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 grid scale energy storage.
Partial evidence: Its own public description names part of grid scale energy storage, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid scale energy storage. 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 384 grid scale energy storage based in the United States

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Grid scale energy storage based in the United States at a glance

As of Sep 16, 2026

40.9%Verified-email coverage

46.6Average contacts per company

11-50Median size (employees)

5.5%Largest-city concentration · New York

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

143

11-50

128

51-200

201-500

501-1,000

1,001-5,000

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 384 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 grid scale energy storage, 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 “grid scale energy storage”. 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 grid scale energy storage), 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 grid scale energy storage, 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, 7,317 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 16, 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 grid scale energy storage, 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 grid scale energy storage are there based in the United States?

RevenueBase identified 384 grid scale energy storage 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?

Fluence, headquartered in Arlington, tops this list with the largest team on record.

Which city has the most grid scale energy storage?

New York leads with 21 headquartered companies, followed by Houston (18) and Austin (9).

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 7,317 verified decision-maker contacts tracked across these 384 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 16, 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.