Company lists · Data refreshed September 2026

Top 25 Energy efficiency services companies based in Belgium

Name: Energy efficiency services companies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 165 companies tracked

RevenueBase identified 165 company matches for energy efficiency services companies associated with Belgium as of September 2026 and tracks 7,077 professional contacts across them, including 2,444 with verified work emails. Ghent is the largest hub.

This list covers company matches for energy efficiency services companies 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 September 16, 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 Sep 16, 2026 How this list was built

165Companies

7,077Contacts tracked

2,444Verified emails

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The 25 largest energy efficiency services companies based in Belgium

Ranked by team size

Top 25 of 165 company matches for energy efficiency services companies based in Belgium, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Equans Belux	Exact match	Brussels, BelgiumHQ recorded Sep 16, 2026	5,001-10,000	5,297 contacts →
	Exact match “What if you could use your talent to contribute to the great challenges of tomorrow?” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2	Smappee	Exact match	Harelbeke, BelgiumHQ recorded Sep 16, 2026	51-200	120 contacts →
	Exact match “Smappee is an energy technology company.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3	Vlaams Energiebedrijf	Exact match	Brussels, BelgiumHQ recorded Sep 16, 2026	51-200	116 contacts →
	Exact match “Welkom bij het Vlaams EnergieBedrijf.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4	INDEA	Exact match	Aalst, BelgiumHQ recorded Sep 16, 2026	n/a	115 contacts →
	Exact match “Wij helpen industriële bedrijven hun energiekosten te verminderen.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5	Reno Energy	Exact match	Liège (angleur), BelgiumHQ recorded Sep 16, 2026	51-200	106 contacts →
	Exact match “Reno Energy est une entreprise spécialisée dans le secteur de la rénovation énergétique mais aussi dans la nouvelle construction.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6	Deplasse	Exact match	Watermael-boitsfort, BelgiumHQ recorded Sep 16, 2026	51-200	74 contacts →
	Exact match “Deplasse est un bureau d’études et de conseils qui offre une vision globale et transversale sur la transition énergétique incluant expertise technique, approche patrimoniale et…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7	Luminus Solutions	Exact match	Brussels, BelgiumHQ recorded Sep 16, 2026	11-50	61 contacts →
	Exact match “Together, let’s take on the energy transition challenge!” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8	CES Group	Exact match	Asse, BelgiumHQ recorded Sep 16, 2026	51-200	56 contacts →
	Exact match “CES provides a consulting service in the areas of energy, technical installations and processing.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9	MR Solar	Exact match	Zwevegem, BelgiumHQ recorded Sep 16, 2026	51-200	51 contacts →
	Exact match “Efficiency Thanks to our advice focused on a sustainable ecosystem, we offer our customers a tailor-made energy solution, resulting in optimal efficiency in both the near and…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10	AYA	Exact match	Etterbeek, BelgiumHQ recorded Sep 16, 2026	11-50	45 contacts →
	Exact match “AYA is an integrated network of forward-thinking Energy Managers that will help your company develop a comprehensive energy policy.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11	The Energy Circle	Exact match	Hasselt, BelgiumHQ recorded Sep 16, 2026	201-500	40 contacts →
	Exact match “Van onderhoud & monitoring, elektrische installaties & groene stroom, tot waterbeheer & HVAC-systemen: The Energy Circle heeft alle expertise in huis om grote gebouwen en…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12	Bureau D'études A Concept	Exact match	Liège, BelgiumHQ recorded Sep 16, 2026	11-50	38 contacts →
	Exact match “A+ Concept est un bureau d'études composé d'experts énergétiques et ingénieurs spécialisés dans les techniques du bâtiment.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13	Coretec Energy	Exact match	Angleur, BelgiumHQ recorded Sep 16, 2026	11-50	26 contacts →
	Exact match “ACTIVITÉS ET PRODUITS CORETEC, votre partenaire vers une gestion durable et performante de votre énergie, a comme principal objectif de réduire la facture énergétique et donc…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14	Delpower	Exact match	Thimister-clermont, BelgiumHQ recorded Sep 16, 2026	11-50	24 contacts →
	Exact match “DELPOWER is an energy efficiency engineering company dedicated to optimising energy costs for tertiary and industrial customers.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15	Group VHC	Exact match	Overijse, BelgiumHQ recorded Sep 16, 2026	51-200	24 contacts →
	Exact match “Group VHC zorgt al meer dan 25 jaar voor slimme oplossingen in verwarming, koeling, ventilatie en zonne energie.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16	NOVEN	Exact match	Ghent, BelgiumHQ recorded Sep 16, 2026	11-50	24 contacts →
	Exact match “Climate change is an urgent reality, and buildings, which are responsible for nearly 40% of the EU's GHG emissions, play a pivotal role.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17	Ecopuur	Exact match	9850, BelgiumHQ recorded Sep 16, 2026	11-50	23 contacts →
	Exact match “Ecopuur bekijkt het verbruikspatroon van je huidige of nieuwe woning.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18	Soltis	Exact match	Evere, BelgiumHQ recorded Sep 16, 2026	11-50	23 contacts →
	Exact match “Soltis est une entreprise créée en 2008 qui accompagne professionnels et particuliers dans la mise en place de solutions vertes et rentables avec un seul but: améliorer…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19	cozie.be	Exact match	België, BelgiumHQ recorded Sep 16, 2026	51-200	23 contacts →
	Exact match “Cozie \| Durable Comfort Cozie is a vibrant company that works with ENGIE to combine the energy and dynamism of a start-up with the technical competence & long-term vision of an…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20	Zaman Yves & C	Exact match	Ghent, BelgiumHQ recorded Sep 16, 2026	51-200	21 contacts →
	Exact match “Zaman is een professionele technisch dienstverlener voor installaties op de professionele en industriële markt.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21	ODOT	Exact match	Schoten, BelgiumHQ recorded Sep 16, 2026	11-50	21 contacts →
	Exact match “Odot optimises energy management for businesses and specialises in Energy Contract Management, consumption monitoring and customised consultancy services.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22	EMAZE	Exact match	Ghent, BelgiumHQ recorded Sep 16, 2026	11-50	18 contacts →
	Exact match “Emaze provides actionable energy advice for the industrial, service and public sector: Energy management - Implement an energy management system (e.g.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23	Techem Belgium - Caloribel	Exact match	Sint-jans-molenbeek, BelgiumHQ recorded Sep 16, 2026	51-200	18 contacts →
	Exact match “Europees leider in energiebeheer Techem, opgericht in 1962, is een Duitse groep die wereldwijd bekend is bij mede-eigenaren en sociale verhuurders op het gebied van energiebeheer.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24	TEM	Exact match	BelgiumHQ recorded Sep 16, 2026	201-500	18 contacts →
	Exact match “TECHNICAL EQUIPMENT MAINTENANCE-TECHNILIFT is a construction company based out of 112 Rue de Fierlant, Forest, Belgium.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25	Isolution	Exact match	Namur, BelgiumHQ recorded Sep 16, 2026	11-50	17 contacts →
	Exact match “ISOLUTION est une société spécialisée dans l'isolation et la ventilation de bâtiment pour particuliers et professionnels, et ce depuis plus de 12 ans Aujourd'hui, Isolution compte…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “energy efficiency services companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 165 energy efficiency services companies based in Belgium

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Energy efficiency services companies based in Belgium at a glance

As of Sep 16, 2026

34.5%Verified-email coverage

42.9Average contacts per company

1-10Median size (employees)

4.2%Largest-city concentration · Ghent

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

105

11-50

51-200

201-500

5,001-10,000

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 165 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 “energy efficiency services 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 2,444 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 September 16, 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 “energy efficiency services companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficiency services companies are there based in Belgium?

RevenueBase identified 165 company matches for energy efficiency services companies associated with Belgium as of September 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?

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

Which city has the most energy efficiency services companies?

Ghent leads with 7 company records, followed by Antwerp (6) and Brussels (5).

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 2,444 professional contacts with verified work emails tracked across these 165 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 September 16, 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.