Company lists · Data refreshed September 2026

Top 25 Environmental research and advocacy organizations based in Germany

Name: Environmental research and advocacy organizations based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 158 companies tracked

RevenueBase identified 158 environmental research and advocacy organizations headquartered in Germany as of September 2026 and tracks 2,813 professional contacts across them, including 1,036 with verified work emails. Berlin is the largest hub.

This list covers environmental research and advocacy organizations headquartered in Germany, 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 19, 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 19, 2026 86% judged on-target in blind review

158Companies

2,813Contacts tracked

1,036Verified emails

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The 25 largest environmental research and advocacy organizations based in Germany

Ranked by team size

Top 25 of 158 environmental research and advocacy organizations based in Germany, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental research and advocacy organizations: 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	Helmholtz Centre For Environmental Research UFZ	Strong evidence	Leipzig, GermanyHQ checked Sep 19, 2026	1,001-5,000	762 contacts →
	Strong evidence “The Helmholtz Centre for Environmental Research - UFZ was established in 1991 and has more than 1,100 employees in Leipzig, Halle/S.” Source: RevenueBase Database · checked Sep 19, 2026
2	Nabu E.V	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	201-500	262 contacts →
	Indirect evidence “Der NABU engagiert sich seit 1899 für Mensch und Natur.” Source: RevenueBase Database · checked Sep 19, 2026
3	Wuppertal Institute For Climate, Environment And Energy	Partial evidence	Wuppertal, GermanyHQ checked Sep 19, 2026	201-500	249 contacts →
	Partial evidence “The Wuppertal Institute is an implementation-oriented research institute with roots in North Rhine-Westphalia and a global outlook.” Source: RevenueBase Database · checked Sep 19, 2026
4	Greenpeace Deutschland	Indirect evidence	Hamburg, GermanyHQ checked Sep 19, 2026	201-500	161 contacts →
	Indirect evidence “Greenpeace ist eine internationale Umweltorganisation, die seit 50 Jahren mit gewaltfreien Aktionen für den Schutz der Lebensgrundlagen kämpft.” Source: RevenueBase Database · checked Sep 19, 2026
5	Deutsche Umwelthilfe	Indirect evidence	Radolfzell / Berlin, GermanyHQ checked Sep 19, 2026	51-200	126 contacts →
	Indirect evidence “Die Deutsche Umwelthilfe ist ein gemeinnütziger Natur, Umwelt- und Verbraucherschutzverband.” Source: RevenueBase Database · checked Sep 19, 2026
6	Ecologic Institute	Strong evidence	Berlin, GermanyHQ checked Sep 19, 2026	51-200	102 contacts →
	Strong evidence “Ecologic Institute is an independent scientific institute for environmental research and policy analysis based in Berlin.” Source: RevenueBase Database · checked Sep 19, 2026
7	IFEU	Indirect evidence	Heidelberg, GermanyHQ checked Sep 19, 2026	51-200	53 contacts →
	Indirect evidence “Das ifeu forscht und berät weltweit zu wichtigen Umwelt- und Nachhaltigkeitsthemen für zahlreiche internationale und nationale Fördermittel- und Auftraggeber.” Source: RevenueBase Database · checked Sep 19, 2026
8	Bioconsult SH	Indirect evidence	Husum, GermanyHQ checked Sep 19, 2026	51-200	47 contacts →
	Indirect evidence “BioConsult SH ist ein Team von Naturwissenschaftlern, das seit 1998 als unabhängiges, ökologisches Forschungs- und Consultingbüro besteht.” Source: RevenueBase Database · checked Sep 19, 2026
9	Bauhaus Earth	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	11-50	45 contacts →
	Indirect evidence “Bauhaus Earth is committed to a future where buildings, cities, and landscapes proactively contribute to climate restoration and have a positive impact on the planet and its…” Source: RevenueBase Database · checked Sep 19, 2026
10	Stiftung Naturschutz Schleswig-Holstein	Indirect evidence	Molfsee, GermanyHQ checked Sep 19, 2026	51-200	29 contacts →
	Indirect evidence “Wir sind Entwicklungshelfer, Vielfaltschützer und Erlebnisraumgestalter – Wir sind die Stiftung Naturschutz Schleswig-Holstein.” Source: RevenueBase Database · checked Sep 19, 2026
11	Bund Naturschutz In Bayern E.V	Indirect evidence	Erlenbach, GermanyHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
12	Global Nature Fund	Partial evidence	Radolfzell Am Bodensee, GermanyHQ checked Sep 19, 2026	11-50	25 contacts →
	Partial evidence “For more than twenty years, the Global Nature Fund (GNF) has been committed to the protection of nature and the environment.” Source: RevenueBase Database · checked Sep 19, 2026
13	Michael Succow Stiftung	Indirect evidence	Greifswald, GermanyHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Seit engagieren wir uns für Natur, Moor- und Klimaschutz und sind heute eine weltweit vernetzte Naturschutzinstitution.” Source: RevenueBase Database · checked Sep 19, 2026
14	Umweltinstitut München	Indirect evidence	Munich, GermanyHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Das Umweltinstitut München ist ein unabhängiger Verein, der sich gegen Atomkraft, für gentechnikfreies Essen, für eine nachhaltige Energiewende und für den ökologischen Landbau…” Source: RevenueBase Database · checked Sep 19, 2026
15	Unabhängiges Institut FÜR Umweltfragen UFU E.V	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Das Unabhängige Institut für Umweltfragen - UfU e.V.” Source: RevenueBase Database · checked Sep 19, 2026
16	Slycan Trust	Indirect evidence	Bonn, GermanyHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “A globally recognised non profit think-tank driven by the vision of collective local and global efforts focusing on climate change, sustainable development, biodiversity and…” Source: RevenueBase Database · checked Sep 19, 2026
17	Interactive Media Foundation	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Mit innovativen Medienformaten setzen wir uns für den Schutz der Umwelt und die Förderung der Demokratie ein.” Source: RevenueBase Database · checked Sep 19, 2026
18	Stiftung Gesunde Erde	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Gesundheit beginnt mit sauberer Luft zum Atmen, genug Wasser zum Trinken, Pflanzen zum Essen, erträglichen Temperaturen und einem guten Miteinander.” Source: RevenueBase Database · checked Sep 19, 2026
19	Arbeitsgruppe FÜR Regionale Struktur- UND Umweltforschung Gmbh Arsu	Indirect evidence	Oldenburg, GermanyHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “Die ARSU GmbH, mit Sitz in Oldenburg, bearbeitet seit mehr als 40 Jahren Planungs, Forschungs- und Umsetzungsprojekte mit einer großen inhaltlichen Bandbreite in den Bereichen…” Source: RevenueBase Database · checked Sep 19, 2026
20	Harbauer Gmbh	Partial evidence	Berlin, GermanyHQ checked Sep 19, 2026	11-50	18 contacts →
	Partial evidence “Harbauer Environmental Technology develops and builds innovative technologies for the protection of the environment and for the remediation of existing damage to ecosystems, in…” Source: RevenueBase Database · checked Sep 19, 2026
21	HOT OR Cool Institute	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Hot or Cool Institute is a public interest think tank working at the intersection of society and sustainability.” Source: RevenueBase Database · checked Sep 19, 2026
22	Deutsche Klimastiftung	Indirect evidence	Bremen, GermanyHQ checked Sep 19, 2026	1-10	15 contacts →
	Indirect evidence “Wie setzen uns als Deutsche KlimaStiftung bereits seit 2009 unabhängig und gemeinnützig für Klimabildung und Dialog im In- und Ausland ein.” Source: RevenueBase Database · checked Sep 19, 2026
23	SDW Bundesverband	Indirect evidence	Bonn, GermanyHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Wir stehen für kompetenten Waldschutz seit fast 75 Jahren.” Source: RevenueBase Database · checked Sep 19, 2026
24	Gaiac ECO Assessment & Research	Strong evidence	Aachen, GermanyHQ checked Sep 19, 2026	11-50	13 contacts →
	Strong evidence “gaiac is a research institute (registered association), founded in 2003 as a legally independent spin-off from the Institute for Environmental Research at RWTH Aachen University…” Source: RevenueBase Database · checked Sep 19, 2026
25	Heimatwurzeln	Indirect evidence	Bonn, GermanyHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Heimatwurzeln setzt sich ein für bürgerlichen Klimaschutz und fördert mit Partnerorganisationen die Akzeptanz für Klimaschutzmaßnahmen in der Mitte der Gesellschaft.” Source: RevenueBase Database · checked Sep 19, 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: environmental research and advocacy organizations. 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 environmental research and advocacy organizations.
Partial evidence: Its own public description names part of environmental research and advocacy organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental research and advocacy organizations. 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 25 of 158 environmental research and advocacy organizations based in Germany

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Environmental research and advocacy organizations based in Germany at a glance

As of Sep 19, 2026

36.8%Verified-email coverage

17.8Average contacts per company

1-10Median size (employees)

22.8%Largest-city concentration · Berlin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 158 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 environmental research and advocacy organizations, 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 Germany whose own description of what they do matches “environmental research and advocacy organizations”. 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 environmental research and advocacy organizations), 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 environmental research and advocacy organizations, and records with no verified work email. Companies headquartered outside Germany 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, 1,036 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 19, 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.

Environmental research and advocacy organizations by metro

Environmental research and advocacy organizations in Berlin36

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 environmental research and advocacy organizations, 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 environmental research and advocacy organizations are there based in Germany?

RevenueBase identified 158 environmental research and advocacy organizations headquartered in Germany 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?

Helmholtz Centre For Environmental Research UFZ, headquartered in Leipzig, tops this list with the largest team on record.

Which city has the most environmental research and advocacy organizations?

Berlin leads with 36 headquartered companies, followed by Hamburg (12) and Bremen (7).

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 1,036 verified decision-maker contacts tracked across these 158 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 19, 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.