Company lists · Data refreshed September 2026

Top 25 Sustainability reporting companies based in Belgium

Name: Sustainability reporting companies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 78 companies tracked

RevenueBase identified 78 sustainability reporting companies headquartered in Belgium as of September 2026 and tracks 498 professional contacts across them, including 202 with verified work emails. Brussels is the largest hub.

This list covers sustainability reporting companies headquartered in Belgium, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

78Companies

498Contacts tracked

202Verified emails

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The 25 largest sustainability reporting companies based in Belgium

Ranked by team size

Top 25 of 78 sustainability reporting companies based in Belgium, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability reporting companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	ENCON	Indirect evidence	Bilzen, BelgiumHQ checked Sep 22, 2026	51-200	104 contacts →
	Indirect evidence “Encon supports businesses as an independent agency with creative and innovative solutions in their transition to become more sustainable.” Source: RevenueBase Database · checked Sep 22, 2026
2	Consultes	Indirect evidence	Zwevegem, BelgiumHQ checked Sep 22, 2026	11-50	34 contacts →
	Indirect evidence “Consultes is een allround partner voor bedrijven op vlak van milieu, preventie, energie en duurzaamheid.” Source: RevenueBase Database · checked Sep 22, 2026
3	RDC Environment	Indirect evidence	Brussels, BelgiumHQ checked Sep 22, 2026	11-50	31 contacts →
	Indirect evidence “Our mission is to support decision-making towards a sustainable world." – Bernard De Caevel, Founder of RDC Environment For more than 30 years, RDC Environment has been helping…” Source: RevenueBase Database · checked Sep 22, 2026
4	Greenomy	Strong evidence	BelgiumHQ checked Sep 22, 2026	51-200	22 contacts →
	Strong evidence “Sustainability reporting software for companies and financial institutions (EU Taxonomy, CSRD, and other emerging ESG standards)-” Source: RevenueBase Database · checked Sep 22, 2026
5	SLO	Indirect evidence	Brussels, BelgiumHQ checked Sep 22, 2026	11-50	20 contacts →
	Indirect evidence “In a time of ecological challenges and economic uncertainty, businesses play a pivotal role in keeping society stable.” Source: RevenueBase Database · checked Sep 22, 2026
6	The Ecological Entrepreneur	Partial evidence	Antwerp, BelgiumHQ checked Sep 22, 2026	11-50	15 contacts →
	Partial evidence “The Ecological Entrepreneur is a sustainability advisor specialised in guiding companies, sector federations and organisations, in the transition towards sustainable compliant…” Source: RevenueBase Database · checked Sep 22, 2026
7	Advista	Indirect evidence	Louvain-la-neuve, BelgiumHQ checked Sep 22, 2026	1-10	13 contacts →
	Indirect evidence “ADVISTA est un bureau d’études et de conseils en environnement et développement durable.” Source: RevenueBase Database · checked Sep 22, 2026
8	Exergie Part Of UEG	Indirect evidence	Beringen, BelgiumHQ checked Sep 22, 2026	11-50	13 contacts →
	Indirect evidence “Wij bij Exergie, willen de wereld verduurzamen.” Source: RevenueBase Database · checked Sep 22, 2026
9	SURA	Indirect evidence	Kortrijk, BelgiumHQ checked Sep 22, 2026	1-10	11 contacts →
	Indirect evidence “Wij helpen bedrijven versnellen richting een duurzame toekomst!” Source: RevenueBase Database · checked Sep 22, 2026
10	21solutions	Indirect evidence	Brussels, BelgiumHQ checked Sep 22, 2026	1-10	10 contacts →
	Indirect evidence “21 Solutions is a consulting firm active in Belgium, France, and internationally.” Source: RevenueBase Database · checked Sep 22, 2026
11	Smart2circle	Indirect evidence	Liège, BelgiumHQ checked Sep 22, 2026	1-10	9 contacts →
	Indirect evidence “Smart2Circle empowers companies and organizations to contribute to a carbon neutral world in 2050.” Source: RevenueBase Database · checked Sep 22, 2026
12	Studio D	Indirect evidence	Leuven, BelgiumHQ checked Sep 22, 2026	1-10	8 contacts →
	Indirect evidence “Duurzaamheidsbeleid & advies Studio D helpt u met het opstellen van een duurzaamheidsstrategie en -beleid.” Source: RevenueBase Database · checked Sep 22, 2026
13	Sustacon	Indirect evidence	Berchem, BelgiumHQ checked Sep 22, 2026	11-50	7 contacts →
	Indirect evidence “Uw betrouwbare partner voor bedrijfsstrategie en -implementatietrajecten, ESG-beleid, CSRD- en duurzaamheidsrapportering, risico management en brede operationele ondersteuning in…” Source: RevenueBase Database · checked Sep 22, 2026
14	Data4green	Partial evidence	Brussels, BelgiumHQ checked Sep 22, 2026	1-10	6 contacts →
	Partial evidence “Data4Green \| Your data transition towards competitive sustainability At the intersection of data expertise and sustainability, Data4Green designs and builds end-to-end data…” Source: RevenueBase Database · checked Sep 22, 2026
15	E-Luse	Indirect evidence	Harelbeke, BelgiumHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “E-Luse assists large (industrial) companies and SMEs in their mission to make their business more sustainable.” Source: RevenueBase Database · checked Sep 22, 2026
16	Polygones	Indirect evidence	Liège, BelgiumHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “Polygones vous accompagne pour placer votre entreprise dans l'économie durable, et en agissant face aux défis environnementaux.” Source: RevenueBase Database · checked Sep 22, 2026
17	Willow Sustainability	Partial evidence	Brussels, BelgiumHQ checked Sep 22, 2026	1-10	4 contacts →
	Partial evidence “Willow is a sustainability advisory firm working with awesome companies in a variety of fascinating fields, from impact investing to retail, fashion, and telecommunications.” Source: RevenueBase Database · checked Sep 22, 2026
18	Ipropeller	Indirect evidence	Brussels, BelgiumHQ checked Sep 22, 2026	11-50	4 contacts →
	Indirect evidence “Consultancy at the intersection of business, society and the environment.” Source: RevenueBase Database · checked Sep 22, 2026
19	Durably	Partial evidence	Ghent, BelgiumHQ checked Sep 22, 2026	1-10	2 contacts →
	Partial evidence “Durably is an impact-driven company that matches passionate people with companies and organisations that see sustainability as a key element of their business model.” Source: RevenueBase Database · checked Sep 22, 2026
20	D4front	Indirect evidence	Brussels, BelgiumHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “At d4front, we offer the expertise you require to accomplish your climate goals.” Source: RevenueBase Database · checked Sep 22, 2026
21	Goact BV	Partial evidence	Brussels, BelgiumHQ checked Sep 22, 2026	1-10	2 contacts →
	Partial evidence “GoAct is an independent sustainability advisory group with extensive business experience.” Source: RevenueBase Database · checked Sep 22, 2026
22	BEAR	Indirect evidence	Fleurus, BelgiumHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “Bureau de conseils en finances, stratégie et environnement pour entreprises.” Source: RevenueBase Database · checked Sep 22, 2026
23	Sparks Impact	Partial evidence	Gent, BelgiumHQ checked Sep 22, 2026	1-10	1 contacts →
	Partial evidence “SPARKS IMPACT helps sustainability leads move from ambition to shared ownership, so sustainability no longer depends on one person.” Source: RevenueBase Database · checked Sep 22, 2026
24	Circle DEV	Partial evidence	Waterloo, BelgiumHQ checked Sep 22, 2026	1-10	1 contacts →
	Partial evidence “Your benefits to progress your sustainability strategy with Circle Dev- A PROFITABLE approach: my long experience in the industry gives me a sense of reality.” Source: RevenueBase Database · checked Sep 22, 2026
25	Co2 Strategy	Indirect evidence	Bois-de-villers, BelgiumHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “CO2 Strategy propose aux entreprises et collectivités de construire une véritable stratégie afin de mettre en place un plan d'action pour réduire les émissions de gaz à effet de…” Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: sustainability reporting companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names sustainability reporting companies.
Partial evidence: Its own public description names part of sustainability reporting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability reporting companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 78 sustainability reporting companies based in Belgium

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Sustainability reporting companies based in Belgium at a glance

As of Sep 22, 2026

40.6%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

19.2%Largest-city concentration · Brussels

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 78 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among sustainability reporting companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Belgium whose own description of what they do matches “sustainability reporting companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names sustainability reporting companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among sustainability reporting companies, and records with no verified work email. Companies headquartered outside Belgium are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 202 across the full list. 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 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names sustainability reporting companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many sustainability reporting companies are there based in Belgium?

RevenueBase identified 78 sustainability reporting companies headquartered in Belgium as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

ENCON, headquartered in Bilzen, tops this list with the largest team on record.

Which city has the most sustainability reporting companies?

Brussels leads with 15 headquartered companies, followed by Liege (7) and Antwerp (4).

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 202 verified decision-maker contacts tracked across these 78 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 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 Smart Search, 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.