Company lists · Data refreshed September 2026

Top 25 Energy storage system providers based in the United States

Name: Energy storage system providers 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 1,181 companies tracked

RevenueBase identified 1,181 energy storage system providers headquartered in the United States as of September 2026 and tracks 53,852 professional contacts across them, including 18,730 with verified work emails. Houston is the largest hub.

This list covers energy storage system providers 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

1,181Companies

53,852Contacts tracked

18,730Verified emails

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The 25 largest energy storage system providers based in the United States

Ranked by team size

Top 25 of 1,181 energy storage system providers 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 energy storage system providers: 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	Partial evidence	Reading, PA, United StatesHQ checked Sep 16, 2026	5,001-10,000	4,520 contacts →
	Partial 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	Hubbell Incorporated	Partial evidence	Shelton, CT, United StatesHQ checked Sep 16, 2026	10001+	4,053 contacts →
	Partial evidence “Hubbell Incorporated is a leading manufacturer of utility and electrical solutions that help build more reliable, resilient, and renewable energy infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
3	Enphase Energy	Strong evidence	Fremont, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	3,130 contacts →
	Strong evidence “Enphase Energy is a global energy technology company and the world’s leading supplier of microinverter-based solar and battery systems.” Source: RevenueBase Database · checked Sep 16, 2026
4	Sunpower Corporation	Strong evidence	Richmond, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,675 contacts →
	Strong evidence “We believe clean energy and backup storage should be accessible to everybody.” Source: RevenueBase Database · checked Sep 16, 2026
5	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
6	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
7	Inventus Power	Partial evidence	Woodridge, IL, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,198 contacts →
	Partial evidence “Inventus Power is the leading provider of advanced battery and power systems for global OEMs.” Source: RevenueBase Database · checked Sep 16, 2026
8	Qcells North America	Strong evidence	Irvine, CA, United StatesHQ checked Sep 16, 2026	501-1,000	954 contacts →
	Strong evidence “Qcells is a renowned complete energy solutions provider in solar cell and module, energy storage, downstream project business and energy retail.” Source: RevenueBase Database · checked Sep 16, 2026
9	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
10	Baker Electric	Partial evidence	Escondido, CA, United StatesHQ checked Sep 16, 2026	501-1,000	680 contacts →
	Partial evidence “Baker Electric is a full-service electrical contractor and energy infrastructure expert headquartered in Escondido, California.” Source: RevenueBase Database · checked Sep 16, 2026
11	Stryten Energy	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 16, 2026	1,001-5,000	677 contacts →
	Strong 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 16, 2026
12	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
13	Trojan Battery Company	Indirect evidence	Santa Fe Springs, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	537 contacts →
	Indirect 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 16, 2026
14	A123 Systems	Strong evidence	Novi, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	530 contacts →
	Strong 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 16, 2026
15	Saber Power	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	521 contacts →
	Partial evidence “Saber Power Services, a portfolio company of Greenbelt Capital Partners, is a fully integrated electrical power system services firm providing end-to-end solutions across utility…” Source: RevenueBase Database · checked Sep 16, 2026
16	Eaglepicher Technologies	Partial evidence	Joplin, MO, United StatesHQ checked Sep 16, 2026	501-1,000	500 contacts →
	Partial evidence “EaglePicher Technologies is a leading producer of batteries and energetic devices.” Source: RevenueBase Database · checked Sep 16, 2026
17	REC Solar	Partial evidence	San Luis Obispo, CA, United StatesHQ checked Sep 16, 2026	n/a	471 contacts →
	Partial evidence “Founded in 1997, REC Solar has emerged as a leader in the solar industry, installing 800+ solar and storage solutions for commercial and public sector customers nationwide.” Source: RevenueBase Database · checked Sep 16, 2026
18	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
19	Trystar	Indirect evidence	Faribault, MN, United StatesHQ checked Sep 16, 2026	501-1,000	427 contacts →
	Indirect evidence “Trystar is at the forefront of advancing power solutions, charged and driven by a committed, dynamic team, tackling complex challenges, and creating innovative solutions.” Source: RevenueBase Database · checked Sep 16, 2026
20	Proterra	Indirect evidence	Burlingame, CA, United StatesHQ checked Sep 16, 2026	501-1,000	396 contacts →
	Indirect evidence “At Proterra, we believe cutting-edge technology can transform transportation's role in building a more sustainable future.” Source: RevenueBase Database · checked Sep 16, 2026
21	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
22	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
23	Solar Energy World	Strong evidence	Laurel, MD, United StatesHQ checked Sep 16, 2026	501-1,000	337 contacts →
	Strong evidence “With tens of thousands of customers, Solar Energy World is the fastest growing solar and battery system installation company in our region, serving Delaware, Florida, Maryland…” Source: RevenueBase Database · checked Sep 16, 2026
24	Octillion Power Systems	Partial evidence	Richmond, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	335 contacts →
	Partial evidence “Octillion is a California-based Tier 1 supplier of innovative high-density battery systems and related technology focused on the electrification of major industries such as…” Source: RevenueBase Database · checked Sep 16, 2026
25	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

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: energy storage system providers. 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 energy storage system providers.
Partial evidence: Its own public description names part of energy storage system providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy storage system providers. 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 1,181 energy storage system providers based in the United States

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Energy storage system providers based in the United States at a glance

As of Sep 16, 2026

34.8%Verified-email coverage

45.6Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

417

11-50

442

51-200

194

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 1,181 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 energy storage system providers, 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 “energy storage system providers”. 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 energy storage system providers), 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 energy storage system providers, 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, 18,730 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.

Energy storage system providers by metro

Energy storage system providers in Houston42
Energy storage system providers in New York38

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 energy storage system providers, 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 energy storage system providers are there based in the United States?

RevenueBase identified 1,181 energy storage system providers 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 energy storage system providers?

Houston leads with 42 headquartered companies, followed by New York (38) and San Diego (22).

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 18,730 verified decision-maker contacts tracked across these 1,181 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.