Company lists · Data verified August 2026

Top 25 Clean energy consultancy companies based in Belgium

Name: Clean energy consultancy companies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 405 companies tracked

There are 405 clean energy consultancy companies headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 9,331 professional contacts across them, including 1,265 with verified work emails and 263 with mobile numbers. Brussels is the largest hub.

This list covers clean energy consultancy companies headquartered in Belgium, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

405Companies

9,331Contacts tracked

1,265Verified emails

263Mobile numbers

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The 25 largest clean energy consultancy companies based in Belgium

Ranked by team size

Top 25 of 405 clean energy consultancy companies based in Belgium, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	AESA	Brussels	51-200	127	11
2	Enersol	Battice	51-200	101	49
3	E&c Consultants	Kortrijk	51-200	100	19
4	Ecorus	Hasselt	51-200	93	42
5	Methis Consulting	Antwerpen	51-200	75	51
6	Deplasse	Watermael-Boitsfort	51-200	68	44
7	VVA Group	Brussels	51-200	64	16
8	Energyking	n/a	51-200	53	37
9	Broptimize Energy	Remicourt	51-200	51	35
10	MR Solar	Destelbergen	51-200	51	28
11	Baastel	Bruxelles	11-50	50	28
12	Linea Trovata Group	Ardooie	51-200	48	30
13	Insaver	n/a	51-200	44	24
14	E-Cube Strategy Consultants	Brussels Brussels	11-50	43	23
15	Consultes	Antwerp	11-50	34	29
16	Bureau D'études A Concept	Liege	11-50	34	17
17	Enerdeal By EDP	Zaventem	11-50	32	23
18	Coretec Energy	Angleur	11-50	26	9
19	Delpower	n/a	11-50	24	22
20	Ecopuur	Drongen	11-50	23	16
21	Helexia Belgium	Antwerpen	201-500	23	1
22	ENSYS	Kapellen	11-50	22	17
23	Raco By Studibo	Heusden-Zolder	11-50	21	17
24	Cenergie	Antwerpen	11-50	20	9
25	ODOT	Schoten	11-50	20	5

Showing 25 of 405 clean energy consultancy companies based in Belgium

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Clean energy consultancy companies based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

BrusselsLargest hub · 39 HQs

263Contacts with mobile numbers

10Emails re-verified in last 30 days

Companies by employee count

1-10

269

11-50

100

51-200

201-500

501-1,000

5,001-10,000

Clean energy consultancy companies by metro

Metro	Companies
Clean energy consultancy companies in Brussels	39
Clean energy consultancy companies in Bruxelles	10
Clean energy consultancy companies in Liege	9
Clean energy consultancy companies in Antwerpen	8
Clean energy consultancy companies in Gent	8
Clean energy consultancy companies in Mechelen	8
Clean energy consultancy companies in Antwerp	7

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “clean energy consultancy companies”, with match quality audited by blind human judging, and headquartered in Belgium.
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: Contact records re-verify on a rolling cadence; 10 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many clean energy consultancy companies are there based in Belgium?

There are 405 clean energy consultancy companies headquartered in Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

AESA, headquartered in Brussels, tops this list with the largest team on record.

Which city has the most clean energy consultancy companies?

Brussels leads with 39 headquartered companies, followed by Bruxelles (10) and Liege (9).

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 1,265 verified decision-maker contacts tracked across these 405 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.