Company lists · Data refreshed September 2026

Top 25 Flow battery technology companies based in the Netherlands

Name: Flow battery technology companies based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 58 companies tracked

RevenueBase identified 58 flow battery technology companies headquartered in the Netherlands as of September 2026 and tracks 720 professional contacts across them, including 314 with verified work emails. Amsterdam is the largest hub.

This list covers flow battery technology companies headquartered in the Netherlands, 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.

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

58Companies

720Contacts tracked

314Verified emails

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The 25 largest flow battery technology companies based in the Netherlands

Ranked by team size

Top 25 of 58 flow battery technology companies based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to flow battery technology companies: 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	Maxwell Spark	Partial evidence	Rotterdam, NetherlandsHQ checked Sep 19, 2026	51-200	112 contacts →
	Partial evidence “maxwell+spark designs and manufactures lithium-ion battery systems for industrial logistics.” Source: RevenueBase Database · checked Sep 19, 2026
2	Return	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 19, 2026	51-200	88 contacts →
	Indirect evidence “Return is the leading European independent energy storage provider.” Source: RevenueBase Database · checked Sep 19, 2026
3	Iwell B.V	Indirect evidence	Utrecht, NetherlandsHQ checked Sep 19, 2026	51-200	74 contacts →
	Indirect evidence “Our vision is: Clean and affordable energy for everyone; one of the greatest challenges of our time.” Source: RevenueBase Database · checked Sep 19, 2026
4	S4 Energy	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 19, 2026	11-50	39 contacts →
	Indirect evidence “What we do S4 Energy is a leading company that uses specialised expertise, equipment, and advanced software to fully harness the power of energy storage.” Source: RevenueBase Database · checked Sep 19, 2026
5	Elestor B.V	Strong evidence	Arnhem, NetherlandsHQ checked Sep 19, 2026	51-200	33 contacts →
	Strong evidence “Elestor has introduced an innovative electricity storage technology for large scale stationary applications (LDES), based on the flow battery principle.” Source: RevenueBase Database · checked Sep 19, 2026
6	Est-Floattech Energy Storage Solutions	Indirect evidence	Badhoevedorp, NetherlandsHQ checked Sep 19, 2026	11-50	28 contacts →
	Indirect evidence “EST-Floattech, founded in 2009, is a fast-growing international supplier of safe and certified energy storage solutions.” Source: RevenueBase Database · checked Sep 19, 2026
7	NPP Power Europe B.V	Partial evidence	Ridderkerk, NetherlandsHQ checked Sep 19, 2026	11-50	23 contacts →
	Partial evidence “NPP Power focuses on R&D, manufacturing, and sales of traditional and new energy products, including valve-regulated lead-acid batteries, lithium batteries, and lithium cells.” Source: RevenueBase Database · checked Sep 19, 2026
8	Aquabattery	Partial evidence	Alphen Aan Den Rijn, NetherlandsHQ checked Sep 19, 2026	11-50	20 contacts →
	Partial evidence “AQUABATTERY is a flow-type long duration energy storage (LDES) solution.” Source: RevenueBase Database · checked Sep 19, 2026
9	Volstora	Partial evidence	Arnhem, NetherlandsHQ checked Sep 19, 2026	11-50	19 contacts →
	Partial evidence “Volstora specializes in cell-to-system energy storage technologies, offering custom-made energy storage solutions for all dynamic market needs.” Source: RevenueBase Database · checked Sep 19, 2026
10	MG Energy Systems	Strong evidence	Leeuwarden, NetherlandsHQ checked Sep 19, 2026	11-50	18 contacts →
	Strong evidence “MG specializes in high-end lithium-ion battery system solutions, featuring innovative technologies for the best performance.” Source: RevenueBase Database · checked Sep 19, 2026
11	Green Energy Storage	Partial evidence	Breda, NetherlandsHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “Green Energy Storage (GES) develops large-scale battery energy storage systems (BESS) that support grid flexibility, energy security and the energy transition across the…” Source: RevenueBase Database · checked Sep 19, 2026
12	Dispatch	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 19, 2026	1-10	14 contacts →
	Indirect evidence “Maintaining a balanced energy grid is key for a successful energy transition.” Source: RevenueBase Database · checked Sep 19, 2026
13	Customized Energy Systems BV	Partial evidence	Helmond, NetherlandsHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “CES is a company of Exide Technologies and develops and builds smart energy storage systems, main focus are the following product-market combinations: Energy Storage 1) Energy…” Source: RevenueBase Database · checked Sep 19, 2026
14	Dyness Europe	Indirect evidence	Capelle Aan Den Ijssel, NetherlandsHQ checked Sep 19, 2026	201-500	11 contacts →
	Indirect evidence “Dyness, founded in 2017, delivers advanced energy storage solutions for residential and C&I applications worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
15	refurb.battery	Strong evidence	Schiphol, NetherlandsHQ checked Sep 19, 2026	11-50	8 contacts →
	Strong evidence “Refurb Battery is een technologische start-up op het gebied van duurzame energie.” Source: RevenueBase Database · checked Sep 19, 2026
16	Ionbase	Partial evidence	Muiden, NetherlandsHQ checked Sep 19, 2026	1-10	7 contacts →
	Partial evidence “Our mission is to electrify the future by providing the most reliable & safe battery based energy storage systems in the world.” Source: RevenueBase Database · checked Sep 19, 2026
17	AQ	Partial evidence	Utrecht, NetherlandsHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “Bij AQ Storage ontwikkelen we slimme batterijoplossingen die bijdragen aan een flexibel, duurzaam en toekomstbestendig energiesysteem.” Source: RevenueBase Database · checked Sep 19, 2026
18	Konkaenergy	Partial evidence	Zeist, NetherlandsHQ checked Sep 19, 2026	11-50	5 contacts →
	Partial evidence “At KonkaEnergy, our mission is to empower a sustainable and resilient future by pioneering innovative Battery Energy Storage Systems (BESS).” Source: RevenueBase Database · checked Sep 19, 2026
19	On Battery B.V	Indirect evidence	Oisterwijk, NetherlandsHQ checked Sep 19, 2026	11-50	3 contacts →
	Indirect evidence “Our mission is to revolutionize the European energy storage industry by providing cutting-edge, large-scale energy storage solutions (BESS) that empower businesses and communities…” Source: RevenueBase Database · checked Sep 19, 2026
20	Solshare Distribution	Partial evidence	Dieren, NetherlandsHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “AlphaESS is één van de grootste fabrikanten van hybride batterijsystemen wereldwijd en levert veilige en betrouwbare residentiële, commerciële- én grootschalige energie opslag…” Source: RevenueBase Database · checked Sep 19, 2026
21	Pdenergy	Strong evidence	Nieuwendijk, NetherlandsHQ checked Sep 19, 2026	11-50	3 contacts →
	Strong evidence “Advanced battery technology & containerized systems integration” Source: RevenueBase Database · checked Sep 19, 2026
22	Ecopowercell	Indirect evidence	Alphen Aan Den Rijn, NetherlandsHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Ecopowercell \| Slimme energieopslagoplossingen voor een duurzame toekomst Bij Ecopowercell helpen we bedrijven in Nederland om energie efficiënter te gebruiken en kosten te…” Source: RevenueBase Database · checked Sep 19, 2026
23	Quotier Power Solutions	Indirect evidence	Eindhoven, NetherlandsHQ checked Sep 19, 2026	11-50	2 contacts →
	Indirect evidence “Quotier Power Solutions delivers turn-key solutions for energy storage.” Source: RevenueBase Database · checked Sep 19, 2026
24	Powerwatt	Indirect evidence	Tilburg, NetherlandsHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “De energietransitie is in volle gang en dit vraagt om slimme keuzes.” Source: RevenueBase Database · checked Sep 19, 2026
25	ECO Lithium BV	Indirect evidence	Zaandam, NetherlandsHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “Eco Lithium helpt U door de energie transitie heen en helpt duurzaam om te gaan met energie en grondstoffen, dit doen wij door middel van; Het bouwen van mobile en vaste energie…” 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: flow battery technology companies. 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 flow battery technology companies.
Partial evidence: Its own public description names part of flow battery technology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name flow battery technology companies. 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 58 flow battery technology companies based in the Netherlands

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Flow battery technology companies based in the Netherlands at a glance

As of Sep 19, 2026

43.6%Verified-email coverage

12.4Average contacts per company

11-50Median size (employees)

6.9%Largest-city concentration · Amsterdam

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Netherlands, so it is reported there. Company counts and contact totals on this page are exact for Netherlands, over 58 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 flow battery technology companies, 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 Netherlands whose own description of what they do matches “flow battery technology companies”. 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 flow battery technology companies), 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 flow battery technology companies, and records with no verified work email. Companies headquartered outside Netherlands 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, 314 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.

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 flow battery technology companies, 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 flow battery technology companies are there based in the Netherlands?

RevenueBase identified 58 flow battery technology companies headquartered in the Netherlands 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?

Maxwell Spark, headquartered in Bb, tops this list with the largest team on record.

Which city has the most flow battery technology companies?

Amsterdam leads with 4 headquartered companies, followed by Arnhem (3) and Capelle Aan Den Ijssel (3).

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 314 verified decision-maker contacts tracked across these 58 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.