Company lists · Data refreshed September 2026

Top 25 Battery energy storage system operators based in the United States

Name: Battery energy storage system operators 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 387 companies tracked

RevenueBase identified 387 battery energy storage system operators headquartered in the United States as of September 2026 and tracks 18,323 professional contacts across them, including 7,198 with verified work emails. Houston is the largest hub.

This list covers battery energy storage system operators 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

387Companies

18,323Contacts tracked

7,198Verified emails

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The 25 largest battery energy storage system operators based in the United States

Ranked by team size

Top 25 of 387 battery energy storage system operators 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 battery energy storage system operators: 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	Enersys	Strong evidence	Reading, PA, United StatesHQ checked Sep 16, 2026	5,001-10,000	4,520 contacts →
	Strong evidence “EnerSys is a global leader in stored energy solutions helping industrial, infrastructure and defense customers address critical power and operational needs with batteries…” Source: RevenueBase Database · checked Sep 16, 2026
2	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
3	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
4	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
5	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
6	Shoals Technologies Group	Indirect evidence	Portland, TN, United StatesHQ checked Sep 16, 2026	1,001-5,000	305 contacts →
	Indirect evidence “Shoals Technologies Group, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
7	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
8	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
9	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
10	Antora Energy	Partial evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	201-500	242 contacts →
	Partial evidence “Antora Energy delivers affordable, reliable energy to industry, data centers, and the grid.” Source: RevenueBase Database · checked Sep 16, 2026
11	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
12	Energy Vault	Strong evidence	Westlake Village, VA, United StatesHQ checked Sep 16, 2026	51-200	203 contacts →
	Strong 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
13	QE Solar	Indirect evidence	Springfield, NJ, United StatesHQ checked Sep 16, 2026	201-500	200 contacts →
	Indirect evidence “QE Solar is one of the nation's largest independent solar and BESS operations and maintenance providers, with over 15 years of operating experience.” Source: RevenueBase Database · checked Sep 16, 2026
14	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
15	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
16	ZEO Energy	Partial evidence	Port St Lucie, FL, United StatesHQ checked Sep 16, 2026	201-500	159 contacts →
	Partial evidence “ZEO Energy is a nationwide clean energy company helping homeowners take control of their power, their bills, and their future.” Source: RevenueBase Database · checked Sep 16, 2026
17	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
18	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
19	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
20	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
21	KEY Capture Energy	Strong evidence	Albany, NY, United StatesHQ checked Sep 16, 2026	51-200	114 contacts →
	Strong 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 16, 2026
22	Plugpv	Strong evidence	Troy, NY, United StatesHQ checked Sep 16, 2026	51-200	109 contacts →
	Strong evidence “PlugPV is a premier solar energy and battery storage provider.” Source: RevenueBase Database · checked Sep 16, 2026
23	Primergy	Strong evidence	Oakland, CA, United StatesHQ checked Sep 16, 2026	51-200	100 contacts →
	Strong evidence “Primergy is a full-service energy developer, owner, and operator focused on deploying utility-scale solar photovoltaic and battery energy storage projects across the United States.” Source: RevenueBase Database · checked Sep 16, 2026
24	Franklinwh Energy Storage INC	Strong evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	201-500	100 contacts →
	Strong evidence “FranklinWH Energy Storage is the manufacturer of the FranklinWH System, a next-generation home energy management and storage solution.” Source: RevenueBase Database · checked Sep 16, 2026
25	Enervenue	Strong evidence	Fremont, CA, United StatesHQ checked Sep 16, 2026	201-500	99 contacts →
	Strong evidence “EnerVenue is commercializing energy storage systems designed to behave like infrastructure, prioritizing endurance, safety, and lifecycle economics over short-term optimization.” 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: battery energy storage system operators. 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 battery energy storage system operators.
Partial evidence: Its own public description names part of battery energy storage system operators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name battery energy storage system operators. 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 387 battery energy storage system operators based in the United States

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Battery energy storage system operators based in the United States at a glance

As of Sep 16, 2026

39.3%Verified-email coverage

47.3Average contacts per company

11-50Median size (employees)

4.4%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

138

11-50

145

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 387 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 battery energy storage system operators, 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 “battery energy storage system operators”. 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 battery energy storage system operators), 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 battery energy storage system operators, 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, 7,198 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 battery energy storage system operators, 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 battery energy storage system operators are there based in the United States?

RevenueBase identified 387 battery energy storage system operators 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?

Enersys, headquartered in Reading, tops this list with the largest team on record.

Which city has the most battery energy storage system operators?

Houston leads with 17 headquartered companies, followed by New York (16) and San Diego (12).

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 7,198 verified decision-maker contacts tracked across these 387 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.