Company lists · Data refreshed September 2026

Top 25 Battery storage operators worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,285 companies tracked

RevenueBase identified 1,285 battery storage operators worldwide as of September 2026 and tracks 25,829 professional contacts across them, including 10,811 with verified work emails. The United States is the largest market and Shenzhen the largest hub.

This list covers battery storage 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 19, 2026. Country and city lists for battery storage 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 19, 2026 86% judged on-target in blind review

1,285Companies

25,829Contacts tracked

10,811Verified emails

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The 25 largest battery storage operators worldwide

Ranked by team size

Top 25 of 1,285 battery storage operators worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to battery storage 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	Nextera Energy, INC	Indirect evidence	Juno Beach, FL, United StatesHQ checked Sep 19, 2026	10001+	3,478 contacts →
	Indirect evidence “NextEra Energy, Inc.(NYSE: NEE) is one of the largest electric power and energy infrastructure companies in North America and is a leading provider of electricity to American…” Source: RevenueBase Database · checked Sep 19, 2026
2	Innio Group	Indirect evidence	Munich, GermanyHQ checked Sep 19, 2026	1,001-5,000	2,111 contacts →
	Indirect 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 19, 2026
3	Fluence	Partial evidence	Arlington, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,863 contacts →
	Partial 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
4	ALFEN	Partial evidence	Almere, NetherlandsHQ checked Sep 19, 2026	501-1,000	678 contacts →
	Partial 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 19, 2026
5	Genus Innovation Limited	Indirect evidence	Jaipur, IndiaHQ checked Sep 19, 2026	501-1,000	315 contacts →
	Indirect 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 19, 2026
6	Nhoa Energy	Strong evidence	Milan, FranceHQ checked Sep 19, 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 19, 2026
7	Polarium	Partial evidence	Stockholm, SwedenHQ checked Sep 19, 2026	201-500	282 contacts →
	Partial evidence “Polarium is a leading energy storage developer.” Source: RevenueBase Database · checked Sep 19, 2026
8	Flexgen	Partial evidence	Durham, NC, United StatesHQ checked Sep 19, 2026	201-500	271 contacts →
	Partial evidence “FlexGen delivers the best integrated energy storage systems by taking a functionality and software-first approach.” Source: RevenueBase Database · checked Sep 19, 2026
9	Base Power Company	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	201-500	248 contacts →
	Indirect evidence “Base is building the future of American power.” Source: RevenueBase Database · checked Sep 19, 2026
10	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
11	Freedom WON PTY LTD	Partial evidence	Longmeadow Business Estate, South AfricaHQ checked Sep 19, 2026	201-500	234 contacts →
	Partial evidence “The Current Future in Energy Storage.” Source: RevenueBase Database · checked Sep 19, 2026
12	Aypa Power	Strong evidence	Austin, ON, United StatesHQ checked Sep 19, 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 19, 2026
13	E-Storage	Partial evidence	Kitchener, ON, CanadaHQ checked Sep 19, 2026	1,001-5,000	208 contacts →
	Partial evidence “e-STORAGE, a subsidiary of Canadian Solar, deploys leading-edge, flexible, turnkey utility energy storage solutions worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
14	Energy Vault	Indirect evidence	Westlake Village, VA, United StatesHQ checked Sep 19, 2026	51-200	203 contacts →
	Indirect 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 19, 2026
15	Greentech	Partial evidence	Hamburg, GermanyHQ checked Sep 19, 2026	201-500	197 contacts →
	Partial evidence “greentech is an integrated solar and storage specialist: The areas of business include project development, design, construction, and operational management of photovoltaic (PV)…” Source: RevenueBase Database · checked Sep 19, 2026
16	Jupiter Power	Partial evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	51-200	188 contacts →
	Partial 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
17	Plus Power	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 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 19, 2026
18	Newen Systems Pvt. LTD	Strong evidence	Vadodara, IndiaHQ checked Sep 19, 2026	51-200	167 contacts →
	Strong evidence “At Newen Systems, we are driving the future of clean energy with cutting-edge Battery Energy Storage Systems (BESS) and DC-coupled solutions.” Source: RevenueBase Database · checked Sep 19, 2026
19	Cmblu Energy	Strong evidence	Alzenau In Unterfranken, GermanyHQ checked Sep 19, 2026	201-500	167 contacts →
	Strong evidence “CMBlu Energy develops and produces high-performance batteries for energy utility companies, grid operators as well as commercial and industrial demand.” Source: RevenueBase Database · checked Sep 19, 2026
20	Cygni Energy	Partial evidence	Hyderabad, IndiaHQ checked Sep 19, 2026	51-200	164 contacts →
	Partial evidence “Cygni designs and manufactures advanced energy storage products ranging from 1kWh to multi-MWh containerized BESS solutions.” Source: RevenueBase Database · checked Sep 19, 2026
21	Sunsource Energy	Partial evidence	Noida, IndiaHQ checked Sep 19, 2026	51-200	162 contacts →
	Partial evidence “SunSource Energy is a leading provider of solar-based energy and storage solutions to commercial, industrial and institutional customers.” Source: RevenueBase Database · checked Sep 19, 2026
22	Tesvolt AG	Strong evidence	Lutherstadt Wittenberg, GermanyHQ checked Sep 19, 2026	201-500	158 contacts →
	Strong evidence “TESVOLT AG is a German provider and system integrator of battery storage systems for commercial, industrial, and utility-scale applications.” Source: RevenueBase Database · checked Sep 19, 2026
23	Queensland Hydro	Partial evidence	Brisbane, AustraliaHQ checked Sep 19, 2026	201-500	149 contacts →
	Partial evidence “Queensland Hydro has been tasked to deliver, operate and maintain the long-duration energy storage assets we need to confidently transition Queensland to a renewable energy future.” Source: RevenueBase Database · checked Sep 19, 2026
24	Convergent Energy And Power	Strong evidence	New York, United StatesHQ checked Sep 19, 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 19, 2026
25	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

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 storage 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 storage operators.
Partial evidence: Its own public description names part of battery storage operators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name battery storage 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 1,285 battery storage operators worldwide

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Battery storage operators worldwide at a glance

As of Sep 19, 2026

41.9%Verified-email coverage

20.1Average contacts per company

11-50Median size (employees)

3.3%Largest-city concentration · Shenzhen

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

510

11-50

372

51-200

211

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 storage 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: Every country. Country and city lists for battery storage operators are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “battery storage 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 storage 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 storage 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, 10,811 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.

Battery storage operators by location

7 lists · largest first

Every Battery storage 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 storage 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 storage operators are there worldwide?

RevenueBase identified 1,285 battery storage 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?

Nextera Energy, INC, headquartered in Juno Beach, tops this list with the largest team on record.

Which country has the most battery storage operators?

The United States leads with 191 companies, followed by Germany (107) and the Netherlands (78). Every battery storage operators list by country and city is linked on this page.

Which city has the most battery storage operators?

Shenzhen leads with 42 headquartered companies, followed by London (19) and Berlin (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 10,811 verified decision-maker contacts tracked across these 1,285 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.