Company lists · Data refreshed November 2026

Top 25 Closed loop geothermal companies based in the Netherlands

RevenueBase identified 53 company matches for closed loop geothermal companies associated with the Netherlands as of November 2026 and tracks 561 professional contacts across them, including 269 with verified work emails. Amsterdam is the largest hub.

This list covers company matches for closed loop geothermal companies associated with the Netherlands, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
53Companies
561Contacts tracked
269Verified emails
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The 25 largest closed loop geothermal companies based in the Netherlands

Ranked by team size
Top 25 of 53 company matches for closed loop geothermal companies based in the Netherlands, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchVoorburg, NetherlandsHQ recorded Nov 6, 202651-200158 contacts →

Exact match

“Eteck levert duurzame energie in de vorm van koude en warmte.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchPurmerend, NetherlandsHQ recorded Nov 6, 202651-20053 contacts →

Exact match

“SVP - Samen werken aan klimaat |@Stadsverwarming | SVP is een groeiend integraal warmtebedrijf dat warmte duurzaam produceert, distribueert en levert aan ruim particuliere en…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchHeerlen, NetherlandsHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“De energietransitie is volop aan de gang.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLeiden, NetherlandsHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“Yeager Energy is an integrated geothermal energy company based in The Netherlands.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchGorredijk, NetherlandsHQ recorded Nov 6, 202651-20019 contacts →

Exact match

“REMBORG is specialist in bronboringen voor gesloten bodemenergie systemen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchElburg, NetherlandsHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“Duratherm is een zelfstandig onderdeel van Draaijer Grondboringen Beheer BV.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMiddenmeer, NetherlandsHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Inco-Drilling provides Directional Drilling Services focused on applying fit for purpose technology and a competent team to achieve cost effective solutions for Geothermal, Oil &…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchZundert, NetherlandsHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“HoCoSto ontwikkelt, produceert en realiseert ondergrondse warmte- en koude opslag voor grootverbruikers van energie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchAmersfoort, NetherlandsHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Bij Jord leveren we systemen voor gezonde, fossielvrije warmte en verkoeling as a service.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchNijkerk, NetherlandsHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“De Installect Bedrijven zijn aanvullend op elkaar actief in de realisatie van duurzame energiesystemen met een specialisatie op het gebied van Warmte Koude Opslag in de bodem…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchElburg, NetherlandsHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Wij zijn Draaijer Installatietechniek B.V.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBarendrecht, NetherlandsHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Bij SMART-NRG willen wij de energietransitie helpen te versnellen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSpakenburg, NetherlandsHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Geotherm Energy Systems BV, in 1997 opgericht, houdt zich bezig met het ontwerp, de realisatie en het onderhoud van zonne-energie- en bodemenergiesystemen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchGroningen, NetherlandsHQ recorded Nov 6, 20261-107 contacts →

Exact match

“AE Systems is dé specialist van Nederland op het gebied van machinale grondboringen t.b.v.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchDordrecht, NetherlandsHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Dutch company for development, design, build, finance and operate geothermal energy systems to provide sustainable heat for greenhouse areas, industry and existing district or…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchAssen, NetherlandsHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Duurzaam comfort zonder concessies!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchNieuwdorp, NetherlandsHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Een warmtepomp is altijd maatwerk.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchNaarden, NetherlandsHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Op bodemenergie kun je bouwen!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchAmsterdam, NetherlandsHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Wij leveren een actieve bijdrage aan de energietransitie in Nederland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDordrecht, NetherlandsHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Deem installatie bv is een jong en dynamisch bedrijf dat zich richt op bodemenergie mbv warmtepompsystemen voor met name gebouwgebonden installaties.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAssen, NetherlandsHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Wij zijn een gespecialiseerd bedrijf dat zich richt op de ontwikkeling en installatie van aardwarmtesystemen en waterbronnen, evenals het uitvoeren van betrouwbaar bodemonderzoek.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchKatwijk Aan Den Rijn, NetherlandsHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Duurzame aardwarmte- en zonne-energiesystemen ontwerpen en installeren is wat wij doen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchHonselersdijk, NetherlandsHQ recorded Nov 6, 20261-104 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchRijkevoort, NetherlandsHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Zoekt u een efficiënte en comfortabele installatie om gasvrij uw pand te verwarmen, koelen en te voorzien van warmwater.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchIjsselmuiden, NetherlandsHQ recorded Nov 6, 202611-503 contacts →

Exact match

“Bij Wellsius werken we aan duurzame en gasloze energie oplossingen voor appartementen, woningen en zakelijk vastgoed.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 53 closed loop geothermal companies based in the Netherlands

See the full list, filter by size, metro and specialty, and access 269 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Closed loop geothermal companies based in the Netherlands at a glance

As of Nov 6, 2026
48.0%Verified-email coverage
10.6Average contacts per company
11-50Median size (employees)
5.7%Largest-city concentration · Amsterdam
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
28
51-200
8

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 53 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the Netherlands whose business descriptions match “closed loop geothermal companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 269 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “closed loop geothermal companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many closed loop geothermal companies are there based in the Netherlands?

RevenueBase identified 53 company matches for closed loop geothermal companies associated with the Netherlands as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

ETECK tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most closed loop geothermal companies?

Amsterdam leads with 3 company records, followed by Amersfoort (2) and Dordrecht (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 269 professional contacts with verified work emails tracked across these 53 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.