Company lists · Data refreshed September 2026

Top 23 Sustainability reporting firms based in Belgium

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

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 47 companies tracked

RevenueBase identified 47 sustainability reporting firms headquartered in Belgium as of September 2026 and tracks 296 professional contacts across them, including 90 with verified work emails. Brussels is the largest hub.

This list covers sustainability reporting firms 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

47Companies

296Contacts tracked

90Verified emails

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The 23 largest sustainability reporting firms based in Belgium

Ranked by team size

Top 23 of 47 sustainability reporting firms 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 firms: 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	Climatecamp	Indirect evidence	Antwerp, BelgiumHQ checked Sep 22, 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 22, 2026
2	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
3	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
4	Esglogic	Partial evidence	Ixelles, BelgiumHQ checked Sep 22, 2026	11-50	14 contacts →
	Partial evidence “ESGlogic is a European ESG consulting firm, based in Belgium supporting companies across sectors in sustainability, climate and regulatory transformation.” Source: RevenueBase Database · checked Sep 22, 2026
5	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
6	CAP Conseil	Indirect evidence	Wavre, BelgiumHQ checked Sep 22, 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 22, 2026
7	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
8	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
9	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
10	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
11	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
12	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
13	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
14	livingcomfortable.be	Indirect evidence	Beveren, BelgiumHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence “TECHNIEK - ENERGIE - MILIEU EPB verslaggeving en EPC NR LivingComfortable.be staat garant voor uitstekend dienstverlening.” Source: RevenueBase Database · checked Sep 22, 2026
15	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
16	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
17	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
18	RS Quality Consulting	Indirect evidence	Alken, BelgiumHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “RS-Q accelerates organisations in their journey towards sustainable excellence and quality.” Source: RevenueBase Database · checked Sep 22, 2026
19	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
20	Positive Impact	Indirect evidence	Liège, BelgiumHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “Emmenez votre entreprise vers une économie plus durable et plus résiliente!” Source: RevenueBase Database · checked Sep 22, 2026
21	Futureforward	Partial evidence	Boechout, BelgiumHQ checked Sep 22, 2026	1-10	1 contacts →
	Partial evidence “FutureForward helps companies – big and small- to be part of the Ultimate Earth-jigsaw, by analysing your company, your ecosystem and together formulate your sustainability story.” Source: RevenueBase Database · checked Sep 22, 2026
22	Schaeffner Sustainability	Indirect evidence	Antwerp, BelgiumHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “Binnen bouw- en infraprojecten vervul ik de rol van: senior duurzaamheidsadviseur en projectmanager.” Source: RevenueBase Database · checked Sep 22, 2026
23	Hop3 Consulting	Indirect evidence	Brussels, BelgiumHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “HOP³ Consulting advises organisations in their transition to a low carbon economy.” 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 firms. 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 firms.
Partial evidence: Its own public description names part of sustainability reporting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability reporting firms. 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 23 of 47 sustainability reporting firms based in Belgium

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Sustainability reporting firms based in Belgium at a glance

As of Sep 22, 2026

30.4%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

12.8%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 47 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 firms, 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 firms”. 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 firms), 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 firms, 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, 90 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 firms, 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 firms are there based in Belgium?

RevenueBase identified 47 sustainability reporting firms 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?

Climatecamp, headquartered in Antwerp, tops this list with the largest team on record.

Which city has the most sustainability reporting firms?

Brussels leads with 6 headquartered companies, followed by Liege (6) and Ghent (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 90 verified decision-maker contacts tracked across these 47 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.