Company lists · Data verified August 2026

Top 25 Climate consulting firms based in Belgium

Name: Climate 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 193 companies tracked

There are 193 climate consulting firms headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 1,749 professional contacts across them, including 750 with verified work emails and 56 with mobile numbers. Brussels is the largest hub.

This list covers climate 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.

193Companies

1,749Contacts tracked

750Verified emails

56Mobile numbers

Unlock all 193 companies Free account · no credit card · 2 minutes

The 25 largest climate consulting firms based in Belgium

Ranked by team size

Top 25 of 193 climate 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	ENCON	Bilzen	51-200	104	52
3	Ecorus	Hasselt	51-200	93	42
4	Tauw Belgium	Leuven Wijgmaal	51-200	80	50
5	Deplasse	Watermael-Boitsfort	51-200	68	44
6	Climact	n/a	11-50	64	7
7	Broptimize Energy	Remicourt	51-200	51	35
8	Nexio Projects	Zaventem	11-50	50	40
9	Baastel	Bruxelles	11-50	50	28
10	E-Cube Strategy Consultants	Brussels Brussels	11-50	43	23
11	Sher Ingénieurs-Conseils	Vedrin	11-50	38	14
12	Consultes	Antwerp	11-50	34	29
13	Bureau D'études A Concept	Liege	11-50	34	17
14	RDC Environment	Bruxelles	11-50	31	24
15	Co2logic, A South Pole Company	n/a	11-50	24	15
16	Raco By Studibo	Heusden-Zolder	11-50	21	17
17	D-Carbonize	Brussels	11-50	20	18
18	SLO	Brussels	11-50	20	14
19	Axilium Group	Schilde	11-50	18	13
20	BLEEN	Brussels	11-50	18	7
21	Milvus Consulting NV	Gent	11-50	17	12
22	Matriciel	Louvain-La-Neuve	11-50	15	10
23	The Ecological Entrepreneur	n/a	11-50	15	1
24	Esglogic	Ixelles Brussels	11-50	14	11
25	Exergie Part Of UEG	Lovenjoel	11-50	14	7

Showing 25 of 193 climate consulting firms based in Belgium

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 750 reachable decision-makers.

Free account · no credit card

See all 193 companies

Climate consulting firms based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

BrusselsLargest hub · 33 HQs

56Contacts with mobile numbers

8Emails re-verified in last 30 days

Companies by employee count

1-10

139

11-50

51-200

Climate consulting firms by metro

Metro	Companies
Climate consulting firms in Brussels	33
Climate consulting firms in Antwerp	9
Climate consulting firms in Liege	9
Climate consulting firms in Bruxelles	6
Climate consulting firms in Gent	5
Climate consulting firms in Leuven	4
Climate consulting firms in Antwerpen	3

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 “climate 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; 8 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 climate consulting firms are there based in Belgium?

There are 193 climate 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 climate consulting firms?

Brussels leads with 33 headquartered companies, followed by Antwerp (9) 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 750 verified decision-maker contacts tracked across these 193 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.

Ready to reach these companies? Verified emails and direct dials for all 193 climate consulting firms based in Belgium. Start with a free account, no credit card.

Get the full list

Related lists

Climate consulting firms by geography

Browse the directory

Browse: Companies home · All Belgium lists · All Climate consulting firms lists · New lists

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.