Company lists · Data refreshed November 2026

Top 25 Climate policy advocacy groups worldwide

RevenueBase identified 1,064 company matches for climate policy advocacy groups worldwide as of November 2026 and tracks 17,017 professional contacts across them, including 6,579 with verified work emails. The United States is the largest market and Washington the largest hub.

This list covers company matches for climate policy advocacy groups 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 policy advocacy groups 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
1,064Companies
17,017Contacts tracked
6,579Verified emails
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The 25 largest climate policy advocacy groups worldwide

Ranked by team size
Top 25 of 1,064 company matches for climate policy advocacy groups 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNew York, United StatesHQ recorded Nov 6, 20261,001-5,0001,446 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 6, 2026 · View company records in RevenueBase
2Exact matchOakland, CA, United StatesHQ recorded Nov 6, 2026501-1,0001,156 contacts →

Exact match

“At the Sierra Club, we believe in the power of togetherness.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBerlin, GermanyHQ recorded Nov 6, 2026501-1,000525 contacts →

Exact match

“dena is a centre of excellence for the applied energy transition and climate protection.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchThe Hague, NetherlandsHQ recorded Nov 6, 2026201-500325 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 6, 2026 · View company records in RevenueBase
5Exact matchBoston, MA, United StatesHQ recorded Nov 6, 202651-200241 contacts →

Exact match

“Ceres is a nonprofit advocacy organization working to accelerate the transition to a cleaner, more just, and resilient world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBrussels, BelgiumHQ recorded Nov 6, 202651-200231 contacts →

Exact match

“Transport & Environment (T&E) is Europe’s leading advocate for clean transport and energy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200224 contacts →

Exact match

“LCV believes our earth is worth fighting for because everyone has a right to clean air, water, and a safe, healthy community.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWashington, DC, United StatesHQ recorded Nov 6, 2026n/a201 contacts →

Exact match

“Sunrise is a movement of young people uniting to stop the climate crisis.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchAmsterdam, NetherlandsHQ recorded Nov 6, 202651-200192 contacts →

Exact match

“Onze missie?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBoston, MA, United StatesHQ recorded Nov 6, 202651-200187 contacts →

Exact match

“CATF advocates for the change in technologies and policies needed to get to a zero-emissions, high-energy planet at an affordable cost.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWaterloo, United KingdomHQ recorded Nov 6, 202651-200184 contacts →

Exact match

“E3G is an independent think tank working to deliver a safe climate for all.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchUnited StatesHQ recorded Nov 6, 2026201-500174 contacts →

Exact match

“We are an international, collaborative network of communications professionals in the fields of climate, energy and nature.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSeoul, South KoreaHQ recorded Nov 6, 202651-200160 contacts →

Exact match

“Solutions for Our Climate (SFOC) is an international climate advocacy organization founded in 2016 dedicated to accelerating effective climate action and energy transition across…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBerlin, GermanyHQ recorded Nov 6, 202651-200143 contacts →

Exact match

“Agora Energiewende develops scientifically sound and politically feasible strategies for a successful pathway to climate neutrality – in Germany, Europe and internationally.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAmsterdam, NetherlandsHQ recorded Nov 6, 202651-200133 contacts →

Exact match

“De wereld staat in brand, de zeespiegel stijgt, en biodiversiteit wordt bedreigd.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLondon, DC, United KingdomHQ recorded Nov 6, 202651-200122 contacts →

Exact match

“Global Witness is an investigative, campaigning organisation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-20094 contacts →

Exact match

“The American Council for an Energy-Efficient Economy a nonprofit research organization, develops policies to reduce energy waste and combat climate change.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchUnited StatesHQ recorded Nov 6, 202611-5092 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBoulder, NM, United StatesHQ recorded Nov 6, 202651-20092 contacts →

Exact match

“Western Resource Advocates fights climate change and its impacts to sustain the environment, economy, and people of the West.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDenver, CO, United StatesHQ recorded Nov 6, 202651-20091 contacts →

Exact match

“Environment America has one mission: to protect the natural world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchKøbenhavn, DenmarkHQ recorded Nov 6, 202651-20085 contacts →

Exact match

“Denmark’s green think tank, CONCITO, aims to translate knowledge into climate action and accelerate the green transition-both in Denmark and internationally.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20078 contacts →

Exact match

“InfluenceMap is a leading global think tank working with investors, corporations, policy makers, the media, and campaigners with data-driven analysis on the climate and nature…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchRockport, MA, United StatesHQ recorded Nov 6, 202611-5075 contacts →

Exact match

“ENE was founded in Rockport, ME in and has grown rapidly to 16 professional staff in offices in 5 different states/provinces and two countries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBrussels, BelgiumHQ recorded Nov 6, 202611-5073 contacts →

Exact match

“Climate Action Network (CAN) Europe is Europe's largest coalition working on climate and energy issues.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“Pacific Environment confronts our most urgent environmental issues by connecting local and global movements, catalyzing policy change, and inspiring action for the benefit of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,064 climate policy advocacy groups worldwide

See the full list, filter by size, metro and specialty, and access 6,579 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Climate policy advocacy groups worldwide at a glance

As of Nov 6, 2026
38.7%Verified-email coverage
16.0Average contacts per company
1-10Median size (employees)
4.4%Largest-city concentration · Washington
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
645
11-50
299
51-200
86
201-500
13
501-1,000
6
1,001-5,000
9
5,001-10,000
1
10001+
4

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 advocacy groups are linked below.
What qualifies
Company records worldwide whose business descriptions match “climate policy advocacy groups” 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 6,579 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 policy advocacy groups by location

9 lists · largest first

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

How many climate policy advocacy groups are there worldwide?

RevenueBase identified 1,064 company matches for climate policy advocacy groups 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 advocacy groups?

The United States leads with 288 companies, followed by the United Kingdom (50) and Germany (48). Every climate policy advocacy groups list by country and city is linked on this page.

Which city has the most climate policy advocacy groups?

Washington leads with 47 company records, followed by London (25) and New York (22).

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 6,579 professional contacts with verified work emails tracked across these 1,064 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.