Company lists · Data refreshed September 2026

Top 25 Battery energy storage system operators worldwide

Name: Battery energy storage system operators worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 1,711 companies tracked

RevenueBase identified 1,711 battery energy storage system operators worldwide as of September 2026 and tracks 40,204 professional contacts across them, including 14,940 with verified work emails and 0 with mobile numbers. The United States is the largest market and Shenzhen the largest hub.

This list covers battery energy storage system operators worldwide, 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. Country and city lists for battery energy storage system operators follow the table.

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

1,711Companies

40,204Contacts tracked

14,940Verified emails

0Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest battery energy storage system operators worldwide

Ranked by team size

Top 25 of 1,711 battery energy storage system operators worldwide, 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	Innio Group	Partial evidence	Munich, GermanyHQ checked Sep 16, 2026	1,001-5,000	2,111 contacts →
	Partial evidence “INNIO Group is a global distributed energy solutions provider that delivers reliable, flexible, transient, decentralized, modular and efficient power.” Source: RevenueBase Database · checked Sep 16, 2026
3	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
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	Livguard	Strong evidence	Gurugram, IndiaHQ checked Sep 16, 2026	1,001-5,000	782 contacts →
	Strong evidence “Livguard is the upcoming lightning force in the field of energy storage solutions.” Source: RevenueBase Database · checked Sep 16, 2026
6	ALFEN	Strong evidence	Almere, NetherlandsHQ checked Sep 16, 2026	501-1,000	678 contacts →
	Strong evidence “With transformer substations, energy storage systems, charging stations for electric vehicles and a diverse portfolio of other products and services, Alfen has a central and…” Source: RevenueBase Database · checked Sep 16, 2026
7	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
8	Hoppecke Batteries	Strong evidence	Brilon, GermanyHQ checked Sep 16, 2026	1,001-5,000	530 contacts →
	Strong evidence “HOPPECKE - your expert for industrial batteries & energy storage solutions The availability and securing of electricity is one of the key requirements of our society and at the…” Source: RevenueBase Database · checked Sep 16, 2026
9	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
10	Forsee Power	Strong evidence	Ivry-sur-seine, FranceHQ checked Sep 16, 2026	501-1,000	391 contacts →
	Strong evidence “Forsee Power is an industrial group specializing in smart battery systems for sustainable electric transport (light vehicles, off-highway vehicles, buses, trucks, and trains).” Source: RevenueBase Database · checked Sep 16, 2026
11	Genus Innovation Limited	Partial evidence	Jaipur, IndiaHQ checked Sep 16, 2026	501-1,000	315 contacts →
	Partial evidence “Genus Innovation Limited exists to deliver Energy Happiness, the peace of mind that comes from reliable, intelligent, and sustainable energy.” Source: RevenueBase Database · checked Sep 16, 2026
12	Nhoa Energy	Strong evidence	Milan, FranceHQ checked Sep 16, 2026	201-500	308 contacts →
	Strong evidence “NHOA Energy designs, delivers and services Battery Energy Storage Systems for utility-scale and industrial applications worldwide, based on proprietary technology.” Source: RevenueBase Database · checked Sep 16, 2026
13	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
14	Polarium	Strong evidence	Stockholm, SwedenHQ checked Sep 16, 2026	201-500	282 contacts →
	Strong evidence “Polarium is a leading energy storage developer.” Source: RevenueBase Database · checked Sep 16, 2026
15	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
16	Munich Electrification	Strong evidence	Munich, GermanyHQ checked Sep 16, 2026	201-500	251 contacts →
	Strong evidence “We develop innovative electronic control units for electric vehicles and stationary storage systems for our global customers.” Source: RevenueBase Database · checked Sep 16, 2026
17	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
18	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
19	Intec Energy Solutions	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	242 contacts →
	Strong evidence “INTEC Energy Solutions delivers best-in-class services in Engineering, Procurement, Construction (EPC), Battery Energy Storage Systems (BESS), Manufacturing, Project Development…” Source: RevenueBase Database · checked Sep 16, 2026
20	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
21	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
22	Freedom WON PTY LTD	Strong evidence	Longmeadow Business Estate, South AfricaHQ checked Sep 16, 2026	201-500	234 contacts →
	Strong evidence “The Current Future in Energy Storage.” Source: RevenueBase Database · checked Sep 16, 2026
23	Inverted	Partial evidence	New Delhi, IndiaHQ checked Sep 16, 2026	51-200	216 contacts →
	Partial evidence “Leading India's (EV)solution and Democratising Energy Access.” Source: RevenueBase Database · checked Sep 16, 2026
24	Aypa Power	Strong evidence	Austin, ON, United StatesHQ checked Sep 16, 2026	51-200	211 contacts →
	Strong evidence “Leading the evolution of energy infrastructure, Aypa Power has redefined utility-scale battery energy storage as a critical asset class, supporting grid reliability and…” Source: RevenueBase Database · checked Sep 16, 2026
25	Sympower	Strong evidence	Amsterdam, NetherlandsHQ checked Sep 16, 2026	201-500	209 contacts →
	Strong evidence “Sympower is Europe’s leading independent optimiser and flexibility services provider, delivering cutting-edge Battery Energy Storage System (BESS) solutions and demand-side…” 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 1,711 battery energy storage system operators worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 14,940 reachable decision-makers.

Free signup · no credit card

View the full list →

Battery energy storage system operators worldwide at a glance

As of Sep 16, 2026

37.2%Verified-email coverage

23.5Average contacts per company

11-50Median size (employees)

5.3%Largest-city concentration · Shenzhen

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

639

11-50

495

51-200

303

201-500

137

501-1,000

1,001-5,000

5,001-10,000

10001+

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.
Coverage: 14 countries, largest first: the United States, China, Germany, the United Kingdom, the Netherlands, India, Australia, Canada, Spain, Sweden and 4 more. Country and city lists for battery energy storage system operators are linked below.
What qualifies: Companies worldwide 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.
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, 14,940 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.

Battery energy storage system operators by location

14 lists · largest first

Every Battery energy storage system operators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 worldwide?

RevenueBase identified 1,711 battery energy storage system operators worldwide 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 country has the most battery energy storage system operators?

The United States leads with 387 companies, followed by China (343) and Germany (200). Every battery energy storage system operators list by country and city is linked on this page.

Which city has the most battery energy storage system operators?

Shenzhen leads with 90 headquartered companies, followed by London (36) and Houston (17).

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 14,940 verified decision-maker contacts tracked across these 1,711 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.

Ready to reach these companies? Verified emails and direct dials for all 1,711 battery energy storage system operators worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

Browse: Companies home · Lists by location · New lists

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.