Company lists · Data refreshed September 2026

Top 25 Sustainability companies based in Belgium

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 242 companies tracked

RevenueBase identified 242 sustainability companies headquartered in Belgium as of September 2026 and tracks 2,309 professional contacts across them, including 573 with verified work emails. Brussels is the largest hub.

This list covers sustainability 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 19, 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 19, 2026 86% judged on-target in blind review

242Companies

2,309Contacts tracked

573Verified emails

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The 25 largest sustainability companies based in Belgium

Ranked by team size

Top 25 of 242 sustainability companies based in Belgium, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability 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 19, 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 19, 2026
2	Goodplanet Belgium	Indirect evidence	Ixelles, BelgiumHQ checked Sep 19, 2026	51-200	91 contacts →
	Indirect evidence “GoodPlanet est une association qui existe depuis plus de 25 ans et qui a à cœur de rendre le premier pas vers la durabilité facile et accessible à toutes et tous.” Source: RevenueBase Database · checked Sep 19, 2026
3	BOPRO	Indirect evidence	Ghent, BelgiumHQ checked Sep 19, 2026	51-200	63 contacts →
	Indirect evidence “In forty years Bopro has emerged into a solid, renowned company specialised in Sustainable Real Estate Development, Project Management and Consultancy services in Europe.” Source: RevenueBase Database · checked Sep 19, 2026
4	Cameleon	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “WE ARE CAMELEON(S).” Source: RevenueBase Database · checked Sep 19, 2026
5	KORYS	Indirect evidence	Halle, BelgiumHQ checked Sep 19, 2026	11-50	36 contacts →
	Indirect evidence “Korys is the entrepreneurial investment company of the Colruyt family and creates sustainable added value across 3 investment themes: Conscious Consumer, Healthy Living, and…” Source: RevenueBase Database · checked Sep 19, 2026
6	Climatecamp	Indirect evidence	Antwerp, BelgiumHQ checked Sep 19, 2026	11-50	36 contacts →
	Indirect evidence “Many companies set ambitious Scope 3 targets, yet without reliable primary data they struggle to focus on what matters most and prove real impact.” Source: RevenueBase Database · checked Sep 19, 2026
7	RDC Environment	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 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 19, 2026
8	Ecores	Indirect evidence	Saint-gilles, BelgiumHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “EcoRes is a sustainable development support and consultancy cooperative that assists companies, public organisations and territories in the transition towards a regenerative…” Source: RevenueBase Database · checked Sep 19, 2026
9	Co2logic, A South Pole Company	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “CO2logic joined the South Pole Group in 2021, forming the world’s largest climate solutions provider and carbon project developer.” Source: RevenueBase Database · checked Sep 19, 2026
10	Sustenuto	Strong evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	24 contacts →
	Strong evidence “Sustenuto is a strategic consulting firm that helps organisations make a difference in society by integrating sustainability at the core of their business.” Source: RevenueBase Database · checked Sep 19, 2026
11	We Green Belgium	Indirect evidence	Zaventem, BelgiumHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “We Green vise à réduire la dépendance de ses clients aux sources d'énergie non-durables afin de diminuer leurs émissions de carbone via des solutions énergétiques vertes et…” Source: RevenueBase Database · checked Sep 19, 2026
12	Planet B	Indirect evidence	Gent, BelgiumHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Imagine the perfect world, where there is circular economy, where there is an harmony between the planet and mother nature and social responsibility is among all residents.” Source: RevenueBase Database · checked Sep 19, 2026
13	The Shift VZW Asbl	Strong evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	22 contacts →
	Strong evidence “Belgium’s first, largest and most diverse sustainability community.” Source: RevenueBase Database · checked Sep 19, 2026
14	Greenomy	Strong evidence	BelgiumHQ checked Sep 19, 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 19, 2026
15	SLO	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 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 19, 2026
16	Sustainablepublicaffairs	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “SustainablePublicAffairs delivers policy-driven growth for sustainable business cases.” Source: RevenueBase Database · checked Sep 19, 2026
17	biopack.be	Indirect evidence	Gistel, BelgiumHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence “Met Biopack maken we het verschil door onze blauw-groene aanpak: economisch-verantwoord streven naar een 100% groene verpakking.” Source: RevenueBase Database · checked Sep 19, 2026
18	BLEEN	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “World's gone nuts.” Source: RevenueBase Database · checked Sep 19, 2026
19	The Ecological Entrepreneur	Strong evidence	Antwerp, BelgiumHQ checked Sep 19, 2026	11-50	15 contacts →
	Strong 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 19, 2026
20	Energreen PRO België	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 2026	51-200	14 contacts →
	Indirect evidence “Wij geloven in een duurzame toekomst voor mens en organisatie.” Source: RevenueBase Database · checked Sep 19, 2026
21	Advista	Indirect evidence	Louvain-la-neuve, BelgiumHQ checked Sep 19, 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 19, 2026
22	Exergie Part Of UEG	Indirect evidence	Beringen, BelgiumHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Wij bij Exergie, willen de wereld verduurzamen.” Source: RevenueBase Database · checked Sep 19, 2026
23	CAP Conseil	Indirect evidence	Wavre, BelgiumHQ checked Sep 19, 2026	1-10	13 contacts →
	Indirect evidence “CAP CONSEIL is a private company specialized in research and consultancy services relating to social responsibility, sustainable development, governance and business ethics.” Source: RevenueBase Database · checked Sep 19, 2026
24	Bigtrees	Indirect evidence	Gent, BelgiumHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “We grow sustainable ideas with smart communication campaigns, using behavioural economics and consumer psychology.” Source: RevenueBase Database · checked Sep 19, 2026
25	Robi Professional	Indirect evidence	Merelbeke, BelgiumHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Robi Professional is a social impact company, formerly known as ROBINETTO.” Source: RevenueBase Database · checked Sep 19, 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 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 companies.
Partial evidence: Its own public description names part of sustainability companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability 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 242 sustainability companies based in Belgium

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Sustainability companies based in Belgium at a glance

As of Sep 19, 2026

24.8%Verified-email coverage

9.5Average contacts per company

1-10Median size (employees)

12.0%Largest-city concentration · Brussels

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

182

11-50

51-200

201-500

1,001-5,000

10001+

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 242 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 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 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 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 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, 573 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 19, 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.

Sustainability companies by metro

Sustainability companies in Brussels29

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 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 companies are there based in Belgium?

RevenueBase identified 242 sustainability 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 companies?

Brussels leads with 29 headquartered companies, followed by Antwerp (15) and Bruxelles (13).

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 573 verified decision-maker contacts tracked across these 242 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 19, 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.