Company lists · Data verified August 2026

Top 25 Clean energy consulting firms based in Belgium

Name: Clean 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 338 companies tracked

There are 338 clean energy consulting firms headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 3,054 professional contacts across them, including 1,270 with verified work emails and 80 with mobile numbers. Brussels is the largest hub.

This list covers clean 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.

338Companies

3,054Contacts tracked

1,270Verified emails

80Mobile numbers

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The 25 largest clean energy consulting firms based in Belgium

Ranked by team size

Top 25 of 338 clean 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	Iliade Consulting	Bruxelles	201-500	209	135
2	AESA	Brussels	51-200	127	11
3	Enersol	Battice	51-200	101	49
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	Deplasse	Watermael-Boitsfort	51-200	68	44
8	VVA Group	Brussels	51-200	64	16
9	Climact	n/a	11-50	64	7
10	CES Group	Mons	51-200	54	2
11	Energyking	n/a	51-200	53	37
12	Broptimize Energy	Remicourt	51-200	51	35
13	MR Solar	Destelbergen	51-200	51	28
14	Nexio Projects	Zaventem	11-50	50	40
15	Baastel	Bruxelles	11-50	50	28
16	Linea Trovata Group	Ardooie	51-200	48	30
17	Insaver	n/a	51-200	44	24
18	E-Cube Strategy Consultants	Brussels Brussels	11-50	43	23
19	MK Engineering	Bruxelles	11-50	35	13
20	Consultes	Antwerp	11-50	34	29
21	Bureau D'études A Concept	Liege	11-50	34	17
22	Enerdeal By EDP	Zaventem	11-50	32	23
23	Coretec Energy	Angleur	11-50	26	9
24	Co2logic, A South Pole Company	n/a	11-50	24	15
25	We Green Belgium	Zaventem	11-50	23	12

Showing 25 of 338 clean 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 1,270 reachable decision-makers.

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Clean energy consulting firms based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

BrusselsLargest hub · 36 HQs

80Contacts with mobile numbers

11Emails re-verified in last 30 days

Companies by employee count

1-10

223

11-50

51-200

201-500

Clean energy consulting firms by metro

Metro	Companies
Clean energy consulting firms in Brussels	36
Clean energy consulting firms in Liege	10
Clean energy consulting firms in Bruxelles	9
Clean energy consulting firms in Antwerpen	7
Clean energy consulting firms in Antwerp	7
Clean energy consulting firms in Leuven	7
Clean energy consulting firms in Mechelen	6

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 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; 11 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 consulting firms are there based in Belgium?

There are 338 clean energy consulting firms headquartered in Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

Iliade Consulting, headquartered in Bruxelles, tops this list with the largest team on record.

Which city has the most clean energy consulting firms?

Brussels leads with 36 headquartered companies, followed by Liege (10) and Bruxelles (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 1,270 verified decision-maker contacts tracked across these 338 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.