Company lists · Data verified August 2026

Top 25 Energy consulting firms based in Belgium

Name: Energy consulting firms based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 296 companies tracked

There are 296 energy consulting firms headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 2,753 professional contacts across them, including 1,071 with verified work emails and 75 with mobile numbers. Brussels is the largest hub.

This list covers energy consulting firms 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.

296Companies

2,753Contacts tracked

1,071Verified emails

75Mobile numbers

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The 25 largest energy consulting firms based in Belgium

Ranked by team size

Top 25 of 296 energy consulting firms 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	Reno Energy	Haren	51-200	105	17
3	Trevi NV	Grobbendonk	51-200	101	82
4	E&c Consultants	Kortrijk	51-200	100	19
5	Ecorus	Hasselt	51-200	93	42
6	Methis Consulting	Antwerpen	51-200	75	51
7	Elindus	Waregem	51-200	71	54
8	Deplasse	Watermael-Boitsfort	51-200	68	44
9	Luminus Solutions	Hoegaarden	11-50	61	36
10	Comfort Energy Group	Hasselt	201-500	55	33
11	CES Group	Mons	51-200	54	2
12	Broptimize Energy	Remicourt	51-200	51	35
13	MR Solar	Destelbergen	51-200	51	28
14	Linea Trovata Group	Ardooie	51-200	48	30
15	AYA	Etterbeek Brussels	11-50	46	34
16	Insaver	n/a	51-200	44	24
17	MK Engineering	Bruxelles	11-50	35	13
18	Consultes	Antwerp	11-50	34	29
19	Bureau D'études A Concept	Liege	11-50	34	17
20	Enerdeal By EDP	Zaventem	11-50	32	23
21	Coretec Energy	Angleur	11-50	26	9
22	ESE	Veurne	51-200	25	16
23	Delpower	n/a	11-50	24	22
24	Ecopuur	Drongen	11-50	23	16
25	We Green Belgium	Zaventem	11-50	23	12

Showing 25 of 296 energy consulting firms based in Belgium

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,071 reachable decision-makers.

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Energy consulting firms based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

BrusselsLargest hub · 20 HQs

75Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

197

11-50

51-200

201-500

Energy consulting firms by metro

Metro	Companies
Energy consulting firms in Brussels	20
Energy consulting firms in Mechelen	8
Energy consulting firms in Gent	8
Energy consulting firms in Liege	7
Energy consulting firms in Antwerpen	7
Energy consulting firms in Hasselt	6
Energy consulting firms in Bruxelles	5

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 “energy consulting firms”, 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; 0 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 energy consulting firms are there based in Belgium?

There are 296 energy consulting firms 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 energy consulting firms?

Brussels leads with 20 headquartered companies, followed by Mechelen (8) and Gent (8).

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 1,071 verified decision-maker contacts tracked across these 296 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.