Company lists · Data refreshed November 2026

Top 25 Climate impact consultants worldwide

Name: Climate impact consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 7,021 companies tracked

RevenueBase identified 7,021 company matches for climate impact consultants worldwide as of November 2026 and tracks 120,891 professional contacts across them, including 45,961 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers company matches for climate impact consultants worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for climate impact consultants follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

7,021Companies

120,891Contacts tracked

45,961Verified emails

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The 25 largest climate impact consultants worldwide

Ranked by team size

Top 25 of 7,021 company matches for climate impact consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Arcadis	Exact match	Amsterdam, CO, United KingdomHQ recorded Nov 6, 2026	10001+	36,645 contacts →
	Exact match “Arcadis is a leading global partner, delivering transformative projects with businesses, cities and industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Engie Solutions France	Exact match	La Garenne-colombes, FranceHQ recorded Nov 6, 2026	10001+	11,810 contacts →
	Exact match “Les activités Infrastructures Energétiques Locales d’ENGIE accompagnent les collectivités, les industries et le secteur du bâtiment sur la voie de la décarbonation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Ricardo	Exact match	West Sussex, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	2,155 contacts →
	Exact match “Ricardo, a member of @WSP, is a global engineering company, specialising in complex propulsion, driveline and energy systems, delivering high integrity solutions for customers…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	OLA	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	n/a	1,164 contacts →
	Exact match “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Stantec AU Québec	Exact match	Montreal, QC, CanadaHQ recorded Nov 6, 2026	10001+	990 contacts →
	Exact match “Chez Stantec, nous donnons les moyens à nos clients, à nos employés et aux collectivités de relever les grands défis et enjeux mondiaux.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Anthesis Group	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	956 contacts →
	Exact match “Anthesis guides clients to sustainable performance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	South Pole	Exact match	Zurich, SwitzerlandHQ recorded Nov 6, 2026	501-1,000	790 contacts →
	Exact match “South Pole is the world's leading carbon asset developer and climate consultancy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	JBA Consulting	Exact match	Skipton, United KingdomHQ recorded Nov 6, 2026	501-1,000	774 contacts →
	Exact match “Leading in society's pursuit for resilience to climate change.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	RWDI	Exact match	Guelph, CanadaHQ recorded Nov 6, 2026	501-1,000	749 contacts →
	Exact match “We are a leading global climate and performance engineering consulting firm dedicated to creating harmony between the built and natural world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Climatebase	Exact match	San Francisco, CA, United StatesHQ recorded Nov 6, 2026	n/a	670 contacts →
	Exact match “Climatebase is the community for climate & sustainability professionals, and the world's #1 platform for green jobs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Agritecture	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	n/a	665 contacts →
	Exact match “Agritecture is a global advisory firm specializing in climate-smart agriculture and controlled environment agriculture (CEA).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	E CO	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	645 contacts →
	Exact match “For over 26 years, our consultants have been supporting and guiding our clients to achieve low-carbon climate-resilient development.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Watershed	Exact match	San Francisco, CA, United StatesHQ recorded Nov 6, 2026	201-500	589 contacts →
	Exact match “Watershed is the enterprise sustainability platform.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	ACT Group	Exact match	Amsterdam, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	566 contacts →
	Exact match “Organizations come to ACT when a climate target, regulatory requirement, or emissions challenge needs a solution.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	STX Group	Exact match	Amsterdam, NetherlandsHQ recorded Nov 6, 2026	501-1,000	556 contacts →
	Exact match “STX Group is a leading global firm in environmental commodities trading and climate finance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	ADP Consulting	Exact match	Melbourne, AustraliaHQ recorded Nov 6, 2026	201-500	472 contacts →
	Exact match “ADP Consulting, an Ayesa company, is a sustainability-led engineering consultancy on a quest to inspire a better world through influence and design.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Council On Energy, Environment And Water Ceew	Exact match	New Delhi, IndiaHQ recorded Nov 6, 2026	201-500	458 contacts →
	Exact match “The Council on Energy, Environment and Water (CEEW), a homegrown institution with headquarters in New Delhi, is among the world’s leading climate think tanks.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Inddigo	Exact match	Chambéry, FranceHQ recorded Nov 6, 2026	201-500	457 contacts →
	Exact match “Ingénierie du développement durable” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Amphos 21	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	201-500	450 contacts →
	Exact match “Founded in 1994, in Barcelona, Spain, Amphos21 includes three companies in Spain (1994), Chile (2009) and Peru (2012).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	AESG	Exact match	London, United Arab EmiratesHQ recorded Nov 6, 2026	201-500	427 contacts →
	Exact match “AESG is an international Consultancy, Engineering and Advisory firm committed to driving sustainability in the built environment and beyond.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	SIPL	Exact match	Noida, IndiaHQ recorded Nov 6, 2026	n/a	407 contacts →
	Exact match “SIPL Pvt Ltd is an established and reputed firm in the Sustainable domain since 2008.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	The Carbon Trust	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	391 contacts →
	Exact match “Our mission is to accelerate the move to a decarbonised future.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Greenflex	Exact match	Paris, FranceHQ recorded Nov 6, 2026	501-1,000	374 contacts →
	Exact match “Since 2009, GreenFlex has been a key partner in the energy, environmental and societal transformation of organizations, enabling them to change their trajectory towards an economy…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	EMM Consulting PTY Limited	Exact match	St Leonards, AustraliaHQ recorded Nov 6, 2026	201-500	363 contacts →
	Exact match “At EMM, we believe that a sustainable future is achievable, and we are dedicated to helping our clients and the community make it a reality.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	NUS Consulting Group	Exact match	Park Ridge, United StatesHQ recorded Nov 6, 2026	201-500	363 contacts →
	Exact match “National Utility Service, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “climate impact consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 7,021 climate impact consultants worldwide

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Climate impact consultants worldwide at a glance

As of Nov 6, 2026

38.0%Verified-email coverage

17.2Average contacts per company

1-10Median size (employees)

4.6%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

5,083

11-50

1,516

51-200

302

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for climate impact consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “climate impact consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 45,961 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Climate impact consultants by location

59 lists · largest first

Every Climate impact consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “climate impact consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many climate impact consultants are there worldwide?

RevenueBase identified 7,021 company matches for climate impact consultants worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Arcadis tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most climate impact consultants?

The United Kingdom leads with 794 companies, followed by the United States (690) and France (586). Every climate impact consultants list by country and city is linked on this page.

Which city has the most climate impact consultants?

London leads with 326 company records, followed by Paris (153) and New York (68).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 45,961 professional contacts with verified work emails tracked across these 7,021 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.