Company lists · Data refreshed November 2026

Top 25 Geothermal energy organizations based in Belgium

RevenueBase identified 80 company matches for geothermal energy organizations associated with Belgium as of November 2026 and tracks 689 professional contacts across them, including 349 with verified work emails. Brussels is the largest hub.

This list covers company matches for geothermal energy organizations associated with Belgium, 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
80Companies
689Contacts tracked
349Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest geothermal energy organizations based in Belgium

Ranked by team size
Top 25 of 80 company matches for geothermal energy organizations based in Belgium, 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 matchDrogenbos, BelgiumHQ recorded Nov 6, 202610001+136 contacts →

Exact match

“The Vaillant Group is a global market and technology leader in the fields of heating, ventilation and air-conditioning technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHerent, BelgiumHQ recorded Nov 6, 202651-20058 contacts →

Exact match

“EnergyKing werd in 2013 opgericht door twee ingenieurs: Lucas & Wiet.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBrussels, BelgiumHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“The European Heat Pump Association (EHPA) represents the majority of the European heat pump industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBrussels, BelgiumHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“Euroheat & Power is a Brussels-based non-profit network, founded in 1954, uniting members across 30+ countries to promote district heating and cooling.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBelgiumHQ recorded Nov 6, 2026501-1,00031 contacts →

Exact match

“We believe in the impact and power of energy within the green and sustainable environment, lived and realised by people and community.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchPelt, BelgiumHQ recorded Nov 6, 202651-20029 contacts →

Exact match

“In capital letters, WILG stands for a huge tree known in Western Europe for its natural beauty, its love for water and its extraordinary growth.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchKoersel, BelgiumHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“IFTech speelt een voortrekkersrol in seizoensmatige energieopslag.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchGeel, BelgiumHQ recorded Nov 6, 20261-1018 contacts →

Exact match

“Terra Energy is an independent, specialized consultancy firm in renewable energy systems, with particular expertise in ground energy or geothermal energy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLeuven, BelgiumHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“We are creative interdisciplinary energy experts!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchGroot-bijgaarden, BelgiumHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Stiebel Eltron is een internationale groep en behoort tot de wereldmarkt- en technologieleiders op het gebied van bouwdiensten en hernieuwbare energie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWavre, BelgiumHQ recorded Nov 6, 20261-1016 contacts →

Exact match

“Bureau spécialisé dans l’énergie et l’environnement- Energies renouvelables - Audit énergétique - Performance énergétique des bâtiments (PEB)- Techniques spéciales - Conception…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBrussels, BelgiumHQ recorded Nov 6, 20261-1015 contacts →

Exact match

“ESTELA keeps its members up-to-date about the latest policy, business and technology developments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHoegaarden, BelgiumHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“GeoTherma gelooft dat alle thermische energienoden in gebouwen en woningen moeten geëlektrificeerd worden met behulp van warmtepompen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchDessel, BelgiumHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“GEBO is a drilling company specialised in geothermal drilling.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBrussels, BelgiumHQ recorded Nov 6, 20261-1013 contacts →

Exact match

“Founded in 1998, EGEC, the European Geothermal Energy Council is an international non-profit association located in Renewable Energy House in Brussels, in the heart of the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLeuven, BelgiumHQ recorded Nov 6, 20261-1012 contacts →

Exact match

“EXTRAQT is the expert in aquathermal energy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBeringen, BelgiumHQ recorded Nov 6, 202651-20011 contacts →

Exact match

“We zorgen dat de zon u energie geeft!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchNamur, BelgiumHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“AQUALE is an engineering company specialised in environmental protection, focused on 3D numerical modelling: surface and underground flow modelling, contaminant and Heat transport…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBrussels, BelgiumHQ recorded Nov 6, 20261-107 contacts →

Exact match

“WellDoneDrill, votre société de forage géothermique à Bruxelles et en Wallonie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchWortegem-petegem, BelgiumHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Welcome to SunElektro!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAntwerp, BelgiumHQ recorded Nov 6, 20261-106 contacts →

Exact match

“We willen de energietransitie versnellen door ze haalbaar en ontzorgend te maken voor iedereen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchOugrée, BelgiumHQ recorded Nov 6, 20261-106 contacts →

Exact match

“ARTESIA was founded by 4 geological engineers passionated about hydrogeology, applied to sensitive and complex contexts.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBrecht, BelgiumHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Woarm - Slim klimaatcomfort”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSchelderode, BelgiumHQ recorded Nov 6, 202611-505 contacts →

Exact match

“Geo-Thermics is sinds 2010 dé pionier van geothermie in Vlaanderen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLokeren, BelgiumHQ recorded Nov 6, 20261-105 contacts →

Exact match

“We brengen PUUR COMFORT met 80% gratis energie uit je tuin.”

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

Showing 25 of 80 geothermal energy organizations based in Belgium

See the full list, filter by size, metro and specialty, and access 349 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Geothermal energy organizations based in Belgium at a glance

As of Nov 6, 2026
50.7%Verified-email coverage
8.6Average contacts per company
1-10Median size (employees)
5.0%Largest-city concentration · Brussels
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
53
11-50
19
51-200
3
501-1,000
1
10001+
1

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 80 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 Belgium whose business descriptions match “geothermal energy organizations” 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 349 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 “geothermal energy organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geothermal energy organizations are there based in Belgium?

RevenueBase identified 80 company matches for geothermal energy organizations associated with Belgium 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?

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

Which city has the most geothermal energy organizations?

Brussels leads with 4 company records, followed by Leuven (3) and Antwerp (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 349 professional contacts with verified work emails tracked across these 80 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.

Ready to reach these companies? Verified emails and direct dials for all 80 geothermal energy organizations based in Belgium. Start with a free account, no credit card.

Download this list →

Related 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 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.