Company lists · Data refreshed November 2026

Top 25 Climate policy consultancies worldwide

Name: Climate policy consultancies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 4,938 companies tracked

RevenueBase identified 4,938 company matches for climate policy consultancies worldwide as of November 2026 and tracks 47,458 professional contacts across them, including 17,852 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers company matches for climate policy consultancies 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 5, 2026. Country and city lists for climate policy consultancies 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 5, 2026 How this list was built

4,938Companies

47,458Contacts tracked

17,852Verified emails

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The 25 largest climate policy consultancies worldwide

Ranked by team size

Top 25 of 4,938 company matches for climate policy consultancies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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	Environmental Defense Fund	Exact match	New York, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,446 contacts →
	Exact match “We are Environmental Defense Fund, a leading environmental nonprofit focused on stabilizing the climate while helping build strong and healthy communities.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Anthesis Group	Exact match	London, United KingdomHQ recorded Nov 5, 2026	1,001-5,000	956 contacts →
	Exact match “Anthesis guides clients to sustainable performance.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	South Pole	Exact match	Zurich, SwitzerlandHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
4	E CO	Exact match	London, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
5	German Energy Agency Dena	Exact match	Berlin, GermanyHQ recorded Nov 5, 2026	501-1,000	525 contacts →
	Exact match “dena is a centre of excellence for the applied energy transition and climate protection.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	SEI Stockholm Environment Institute	Exact match	Stockholm, SwedenHQ recorded Nov 5, 2026	201-500	476 contacts →
	Exact match “Stockholm Environment Institute – bridging science, policy and practice We are an international non-profit research institute that tackles climate, environment and sustainable…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	SIPL	Exact match	Noida, IndiaHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
8	The Carbon Trust	Exact match	London, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
9	International Institute For Sustainable Development	Exact match	Winnipeg, MB, CanadaHQ recorded Nov 5, 2026	51-200	368 contacts →
	Exact match “The International Institute for Sustainable Development (IISD) is an award-winning think tank working to solve today’s greatest sustainable development challenges.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Umwelt Environmental & Social Consultants	Exact match	Teralba, AustraliaHQ recorded Nov 5, 2026	201-500	347 contacts →
	Exact match “Umwelt has been trusted by clients and communities for over 30 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	European Climate Foundation	Exact match	The Hague, NetherlandsHQ recorded Nov 5, 2026	201-500	325 contacts →
	Exact match “The European Climate Foundation (ECF) is a leading philanthropic initiative dedicated to fostering the net-zero transition and ensuring a healthy, thriving planet for current and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	EIC Partnership	Exact match	Redditch, United KingdomHQ recorded Nov 5, 2026	51-200	320 contacts →
	Exact match “EIC Partnership: A Legacy of Expertise, A Commitment to Sustainability With origins dating back to 1975, EIC has cultivated nearly 50 years of distinguished service in energy and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	3degrees Group, INC	Exact match	San Francisco, CA, United StatesHQ recorded Nov 5, 2026	201-500	317 contacts →
	Exact match “3Degrees is a leading global climate solutions provider, pioneer of environmental markets, and Certified B Corporation.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Climate Policy Initiative	Exact match	San Francisco, United StatesHQ recorded Nov 5, 2026	51-200	306 contacts →
	Exact match “CPI is an analysis and advisory organization with deep expertise in finance and policy.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Flint Global	Exact match	London, United KingdomHQ recorded Nov 5, 2026	51-200	278 contacts →
	Exact match “Flint specialises in advising businesses and investors on how to navigate and surmount the policy, political, regulatory and competition challenges they face in European and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Wuppertal Institute For Climate, Environment And Energy	Exact match	Wuppertal, GermanyHQ recorded Nov 5, 2026	201-500	260 contacts →
	Exact match “The Wuppertal Institute is an implementation-oriented research institute with roots in North Rhine-Westphalia and a global outlook.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Adelphi	Exact match	Berlin, GermanyHQ recorded Nov 5, 2026	201-500	255 contacts →
	Exact match “adelphi consult is a leading independent consultancy specialising in climate, environment and development.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Valora Consultores	Exact match	Madrid, SpainHQ recorded Nov 5, 2026	51-200	255 contacts →
	Exact match “VALORA is a consulting company who focus its activity towards a new professional innovative and thrilling challenge.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Nepsen	Exact match	Vincennes, FranceHQ recorded Nov 5, 2026	51-200	240 contacts →
	Exact match “NEPSEN est un bureau d'études indépendant, spécialisé dans les métiers de la transition énergétique & écologique depuis 40 ans.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Global Factor	Exact match	Bilbao, SpainHQ recorded Nov 5, 2026	201-500	229 contacts →
	Exact match “In Global Factor we started to provide professional services on the subject of climate change in the year 2004, prior to the ratification of the Kyoto Protocol or the…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	ECO Logical Australia PTY LTD	Exact match	Sydney, AustraliaHQ recorded Nov 5, 2026	201-500	226 contacts →
	Exact match “We empower people to make a difference.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Wardell Armstrong LLP NOW SLR	Exact match	Stoke On Trent, United KingdomHQ recorded Nov 5, 2026	501-1,000	226 contacts →
	Exact match “Wardell Armstrong is now part of SLR which is a leading global consultancy, accelerating our ability to deliver the net zero transition and helping our clients address critical…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Carbone 4	Exact match	Paris, FranceHQ recorded Nov 5, 2026	51-200	212 contacts →
	Exact match “Founded by Alain Grandjean and Jean-Marc Jancovici, Carbone 4 is a leading independent consulting firm, specialized in energy transition, that offers its expertise to private or…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Waycarbon	Exact match	Belo Horizonte, BrazilHQ recorded Nov 5, 2026	201-500	193 contacts →
	Exact match “WayCarbon is a global company specialized in solutions focused on the transition to a net-zero economy.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	E3g	Exact match	Waterloo, United KingdomHQ recorded Nov 5, 2026	51-200	184 contacts →
	Exact match “E3G is an independent think tank working to deliver a safe climate for all.” Recorded in the RevenueBase company graph · Nov 5, 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 policy consultancies”. 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 4,938 climate policy consultancies worldwide

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Climate policy consultancies worldwide at a glance

As of Nov 5, 2026

37.6%Verified-email coverage

9.6Average contacts per company

1-10Median size (employees)

4.3%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

3,572

11-50

1,084

51-200

206

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 policy consultancies are linked below.
What qualifies: Company records worldwide whose business descriptions match “climate policy consultancies” 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 17,852 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 5, 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 policy consultancies by location

40 lists · largest first

Every Climate policy consultancies 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 policy consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many climate policy consultancies are there worldwide?

RevenueBase identified 4,938 company matches for climate policy consultancies 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?

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

Which country has the most climate policy consultancies?

The United Kingdom leads with 539 companies, followed by the United States (475) and France (369). Every climate policy consultancies list by country and city is linked on this page.

Which city has the most climate policy consultancies?

London leads with 212 company records, followed by Paris (91) and Berlin (72).

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 17,852 professional contacts with verified work emails tracked across these 4,938 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 5, 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.