Company lists · Data refreshed September 2026

Top 23 Decarbonization consultancies based in Brussels, Belgium

Name: Decarbonization consultancies based in Brussels, Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 51 companies tracked

RevenueBase identified 51 decarbonization consultancies headquartered in Brussels, Belgium as of September 2026 and tracks 5,998 professional contacts across them, including 148 with verified work emails. Across Belgium, Brussels is the largest hub for this category.

This list covers decarbonization consultancies headquartered in Brussels, 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 28, 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 28, 2026 86% judged on-target in blind review

51Companies

5,998Contacts tracked

148Verified emails

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The 23 largest decarbonization consultancies based in Brussels, Belgium

Ranked by team size

Top 23 of 51 decarbonization consultancies based in Brussels, Belgium, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to decarbonization consultancies: 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	Hinicio	Partial evidence	Brussels, BelgiumHQ checked Sep 28, 2026	51-200	76 contacts →
	Partial evidence “Founded in 2006, HINICIO is a strategic consulting firm specialized in the decarbonization challenges of hard-to-abate sectors, with more than 20 years of experience in hydrogen…” Source: RevenueBase Database · checked Sep 28, 2026
2	RELY	Partial evidence	Brussels, BelgiumHQ checked Sep 28, 2026	51-200	65 contacts →
	Partial evidence “Rely, an innovator working to accelerate decarbonization for carbon intensive energy producers and heavy industrial sectors by unlocking and upscaling the potential for green…” Source: RevenueBase Database · checked Sep 28, 2026
3	TAPIO	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “Tapio helps businesses understand and reduce their carbon footprint through a carbon management software and a team of experts.” Source: RevenueBase Database · checked Sep 28, 2026
4	D-Carbonize	Partial evidence	Brussels, BelgiumHQ checked Sep 28, 2026	11-50	23 contacts →
	Partial evidence “Driven by the urgency of climate action, D-Carbonize helps industrial companies turn decarbonization into a lever for performance.” Source: RevenueBase Database · checked Sep 28, 2026
5	BLEEN	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “World's gone nuts.” Source: RevenueBase Database · checked Sep 28, 2026
6	Strategic Perspectives	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “Strategic Perspectives is a pan-European think tank, created to promote effective climate action as the solution to a multitude of interconnected crises facing the EU.” Source: RevenueBase Database · checked Sep 28, 2026
7	Endgame Capital	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “We enable trailblazers who are building towards a decarbonised world.” Source: RevenueBase Database · checked Sep 28, 2026
8	Ionect	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Ionect is an agile engineering partner supporting energy-intensive chemical industries in navigating complex low-carbon technologies.” Source: RevenueBase Database · checked Sep 28, 2026
9	Prospect C&s	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Prospect C&S is an independent Brussels-based consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
10	Carbon-Free Europe	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “Carbon-Free Europe (CFE) was launched by Third Way’s Climate and Energy program at COP26 to build international support for a technology-inclusive climate agenda and encourage…” Source: RevenueBase Database · checked Sep 28, 2026
11	Data4green	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect 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 28, 2026
12	Bioflux	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “BioFlux fights to accelerate carbon removal.” Source: RevenueBase Database · checked Sep 28, 2026
13	Willow Sustainability	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect 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 28, 2026
14	NET Circular	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “We are Net Circular - a Sustainability Advisory Company.” Source: RevenueBase Database · checked Sep 28, 2026
15	BE Multimodal	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “BEMULTIMODAL is a Belgium-based consulting company supporting private companies in developing Green Deal strategies and assisting public authorities in their modal shift policies.” Source: RevenueBase Database · checked Sep 28, 2026
16	Greenops Consulting	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “GreenOps Consulting, led by a Harvard-educated senior operational leader with over 30 years of experience in the cement and building materials industry, specializes in innovative…” Source: RevenueBase Database · checked Sep 28, 2026
17	Publiiq	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Publiiq is a Brussels-based public affairs, communication, and project coordination consultancy that helps organisations shape policy, tell their story, and deliver complex…” Source: RevenueBase Database · checked Sep 28, 2026
18	Bernard Energy	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Bernard Energy is an independent energy advisory firm that specialises in providing consulting services to its clients.” Source: RevenueBase Database · checked Sep 28, 2026
19	Newfrontierservices	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “New Frontier Services (NFS) is a Brussels-based consulting firm providing a wide range of services to both government bodies and private companies.” Source: RevenueBase Database · checked Sep 28, 2026
20	D4front	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 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 28, 2026
21	ICK Advisory	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “ICK Advisory is an independent advisory firm, established to be a trusted partner for private equity firms, start-ups, and corporates, offering expert support in pre- and…” Source: RevenueBase Database · checked Sep 28, 2026
22	Cubuss	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “Cubuss helps energy companies and energy consumers in creating sustainable value in the energy market of the future.” Source: RevenueBase Database · checked Sep 28, 2026
23	Thinkcities Consulting	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “THINKCities focuses on urban sustainability and resilient cities by offering solutions for sustainable, low carbon municipal services.” Source: RevenueBase Database · checked Sep 28, 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: decarbonization consultancies. 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 decarbonization consultancies.
Partial evidence: Its own public description names part of decarbonization consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name decarbonization consultancies. 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 51 decarbonization consultancies based in Brussels, Belgium

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Decarbonization consultancies based in Brussels, Belgium at a glance

As of Sep 28, 2026

2.5%Verified-email coverage

117.6Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

5,001-10,000

Email recency for this list is measured across the whole Belgium list rather than for Brussels, so it is reported there. Company counts and contact totals on this page are exact for Brussels, over 51 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 decarbonization consultancies, 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 Brussels, Belgium whose own description of what they do matches “decarbonization consultancies”. 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 decarbonization consultancies), 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 decarbonization consultancies, and records with no verified work email. Companies headquartered outside Brussels 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, 148 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 28, 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 decarbonization consultancies, 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 decarbonization consultancies are there based in Brussels, Belgium?

RevenueBase identified 51 decarbonization consultancies headquartered in Brussels, 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?

Hinicio, headquartered in Brussels, tops this list with the largest team on record.

Which city in Belgium has the most decarbonization consultancies?

Brussels leads Belgium with 51 headquartered companies, followed by Liege (11) and Antwerpen (10).

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 148 verified decision-maker contacts tracked across these 51 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 28, 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.