Company lists · Data refreshed September 2026

Top 25 Environmental sustainability consulting firms based in Germany

Name: Environmental sustainability consulting firms based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,562 companies tracked

RevenueBase identified 1,562 environmental sustainability consulting firms headquartered in Germany as of September 2026 and tracks 21,652 professional contacts across them, including 9,009 with verified work emails. Berlin is the largest hub.

This list covers environmental sustainability consulting firms 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 21, 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 21, 2026 86% judged on-target in blind review

1,562Companies

21,652Contacts tracked

9,009Verified emails

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The 25 largest environmental sustainability consulting firms based in Germany

Ranked by team size

Top 25 of 1,562 environmental sustainability consulting firms based in Germany, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to environmental sustainability consulting firms: 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	Roland Berger	Indirect evidence	Munich, GermanyHQ checked Sep 21, 2026	1,001-5,000	4,632 contacts →
	Indirect evidence “Roland Berger is the only leading global strategy consultancy of European origin.” Source: RevenueBase Database · checked Sep 21, 2026
2	Drees & Sommer	Partial evidence	Stuttgart, GermanyHQ checked Sep 21, 2026	5,001-10,000	3,475 contacts →
	Partial evidence “Uniting opposites to create a world we want to live in Drees & Sommer is a partner-managed, global consulting company providing a single source of consultation and implementation…” Source: RevenueBase Database · checked Sep 21, 2026
3	Fichtner	Indirect evidence	Stuttgart, GermanyHQ checked Sep 21, 2026	1,001-5,000	1,279 contacts →
	Indirect evidence “As a leading, independent engineering and consultancy enterprise active in the sectors of energy and infrastructure, Fichtner handles challenging projects in countries all over…” Source: RevenueBase Database · checked Sep 21, 2026
4	PD	Indirect evidence	Berlin, GermanyHQ checked Sep 21, 2026	1,001-5,000	702 contacts →
	Indirect evidence “Die PD ist die Beratung / Für die öffentliche Hand von morgen / Seit 2008 beraten wir ausschließlich öffentliche Auftraggeber zu moderner Verwaltungsarbeit und…” Source: RevenueBase Database · checked Sep 21, 2026
5	H&z Management Consulting	Indirect evidence	München, GermanyHQ checked Sep 21, 2026	501-1,000	285 contacts →
	Indirect evidence “Welcome to H&Z We offer more than successful strategy development.” Source: RevenueBase Database · checked Sep 21, 2026
6	Adelphi	Partial evidence	Berlin, GermanyHQ checked Sep 21, 2026	201-500	269 contacts →
	Partial evidence “adelphi consult is a leading independent consultancy specialising in climate, environment and development.” Source: RevenueBase Database · checked Sep 21, 2026
7	Zetcon Ingenieure Gmbh	Indirect evidence	Bochum, GermanyHQ checked Sep 21, 2026	501-1,000	269 contacts →
	Indirect evidence “Von Planung bis Bauüberwachung in großen Infrastruktur-Projekten, von Architektur bis Erneuerbare Energien-ZETCON Ingenieure sind ganz vorne mit dabei in den Bereichen Energie…” Source: RevenueBase Database · checked Sep 21, 2026
8	HPC AG	Partial evidence	Harburg (schwaben), GermanyHQ checked Sep 21, 2026	501-1,000	252 contacts →
	Partial evidence “HPC has been working for people and their environment since 1948: we are specialist planners and experts in soil and groundwater, mineral and drinking water, building ground and…” Source: RevenueBase Database · checked Sep 21, 2026
9	Dorsch Impact Gmbh	Partial evidence	Essen, GermanyHQ checked Sep 21, 2026	51-200	200 contacts →
	Partial evidence “Dorsch Impact GmbH is an independent and reliable consulting partner for international development cooperation.” Source: RevenueBase Database · checked Sep 21, 2026
10	ZWP Ingenieur-Ag	Indirect evidence	Köln, GermanyHQ checked Sep 21, 2026	201-500	169 contacts →
	Indirect evidence “We have a passion for innovative and sustainable concepts.” Source: RevenueBase Database · checked Sep 21, 2026
11	Energielenker Gruppe	Indirect evidence	Münster, GermanyHQ checked Sep 21, 2026	201-500	152 contacts →
	Indirect evidence “Wir erschaffen Zukunft – mit erneuerbaren Energien und innovativen Lösungen!” Source: RevenueBase Database · checked Sep 21, 2026
12	Westbridge Advisory	Indirect evidence	Frankfurt, GermanyHQ checked Sep 21, 2026	51-200	147 contacts →
	Indirect evidence “Wir sind ein führender europäischer Energie- und Nachhaltigkeitsberater in der Immobilienwirtschaft.” Source: RevenueBase Database · checked Sep 21, 2026
13	Blocher Partners	Partial evidence	Stuttgart, GermanyHQ checked Sep 21, 2026	201-500	134 contacts →
	Partial evidence “For blocher partners – founded in 1989 by Jutta and Dieter Blocher – design means networking and creating holistic experience concepts in the spirit of sustainability.” Source: RevenueBase Database · checked Sep 21, 2026
14	Integration Consulting Group	Partial evidence	Frankfurt/ Main, GermanyHQ checked Sep 21, 2026	11-50	114 contacts →
	Partial evidence “INTEGRATION is a consulting organization specialising in project management, with focus on developing countries and emerging markets.” Source: RevenueBase Database · checked Sep 21, 2026
15	Unique Land USE Gmbh	Partial evidence	Freiburg, GermanyHQ checked Sep 21, 2026	51-200	99 contacts →
	Partial evidence “Unique is a leading consulting firm for sustainable forestry and agriculture, rural development and natural resource management.” Source: RevenueBase Database · checked Sep 21, 2026
16	Dfge Institute For Energy, Ecology And Economy	Indirect evidence	Greifenberg, GermanyHQ checked Sep 21, 2026	11-50	85 contacts →
	Indirect evidence “Seit unterstützt die DFGE Unternehmen dabei, Nachhaltigkeit messbar und strategisch nutzbar zu machen.” Source: RevenueBase Database · checked Sep 21, 2026
17	Ttsp HWP Planungsgesellschaft MBH	Partial evidence	Frankfurt Am Main, GermanyHQ checked Sep 21, 2026	51-200	83 contacts →
	Partial evidence “TTSP HWP is a consulting and planning firm that designs sustainable and smart data centres for local and international clients.” Source: RevenueBase Database · checked Sep 21, 2026
18	Mailänder Consult Gmbh	Indirect evidence	Karlsruhe, GermanyHQ checked Sep 21, 2026	201-500	79 contacts →
	Indirect evidence “Unsere Stärken stecken in individuellen Konzepten und Planungen in den Bereichen Verkehr, Transport, Umwelt, Hochbau und Flächenmanagement.” Source: RevenueBase Database · checked Sep 21, 2026
19	First Climate	Indirect evidence	Bad Vilbel, GermanyHQ checked Sep 21, 2026	51-200	79 contacts →
	Indirect evidence “With 25 years of experience, First Climate is a leading global provider of carbon management and green energy services for hundreds of corporate and public sector clients.” Source: RevenueBase Database · checked Sep 21, 2026
20	TILIA	Partial evidence	Leipzig, GermanyHQ checked Sep 21, 2026	51-200	78 contacts →
	Partial evidence “Tilia is a French German services, co-development and consulting firm founded in 2009 by people with broad international experience and a common vision of the future of utilities…” Source: RevenueBase Database · checked Sep 21, 2026
21	Baurconsult Architekten Ingenieure	Indirect evidence	Haßfurt, GermanyHQ checked Sep 21, 2026	201-500	73 contacts →
	Indirect evidence “BAURCONSULT als inhabergeführtes Architektur- und Ingenieurbüro setzt seit mehr als 60 Jahren einen klaren Fokus auf Nachhaltigkeit und vereint zu diesem Zweck Spezialisten aus…” Source: RevenueBase Database · checked Sep 21, 2026
22	Verso Gmbh	Partial evidence	München, GermanyHQ checked Sep 21, 2026	51-200	72 contacts →
	Partial evidence “VERSO ist Sustainability-Software-Pionier und Full-Service-Anbieter für die Nachhaltige Transformation im Mittelstand.” Source: RevenueBase Database · checked Sep 21, 2026
23	Enervis Energy Advisors Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 21, 2026	51-200	71 contacts →
	Indirect evidence “enervis is a specialized management consultancy for the energy industry.” Source: RevenueBase Database · checked Sep 21, 2026
24	B.A.U.M. Consult Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 21, 2026	51-200	69 contacts →
	Indirect evidence “B.A.U.M.” Source: RevenueBase Database · checked Sep 21, 2026
25	TNL Umwelt	Indirect evidence	Hungen, GermanyHQ checked Sep 21, 2026	51-200	64 contacts →
	Indirect evidence “Die TNL Umweltpanung ist als unabhängiges Netzwerk im Bereich Beratung und Umsetzung von Umweltfachplanungen bundesweit und im benachbarten Ausland tätig.” Source: RevenueBase Database · checked Sep 21, 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 sustainability consulting firms. 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 sustainability consulting firms.
Partial evidence: Its own public description names part of environmental sustainability consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental sustainability consulting firms. 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 1,562 environmental sustainability consulting firms based in Germany

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Environmental sustainability consulting firms based in Germany at a glance

As of Sep 21, 2026

41.6%Verified-email coverage

13.9Average contacts per company

1-10Median size (employees)

10.2%Largest-city concentration · Berlin

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

1,030

11-50

370

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,562 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 sustainability consulting firms, 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 sustainability consulting firms”. 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 sustainability consulting firms), 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 sustainability consulting firms, 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, 9,009 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 21, 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 sustainability consulting firms by metro

Environmental sustainability consulting firms in Berlin160
Environmental sustainability consulting firms in Hamburg99
Environmental sustainability consulting firms in Munchen58
Environmental sustainability consulting firms in Munich43
Environmental sustainability consulting firms in Stuttgart42
Environmental sustainability consulting firms in Dusseldorf33
Environmental sustainability consulting firms in Koln31

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 sustainability consulting firms, 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 sustainability consulting firms are there based in Germany?

RevenueBase identified 1,562 environmental sustainability consulting firms 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?

Roland Berger, headquartered in Munich, tops this list with the largest team on record.

Which city has the most environmental sustainability consulting firms?

Berlin leads with 160 headquartered companies, followed by Hamburg (99) and Munchen (58).

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 9,009 verified decision-maker contacts tracked across these 1,562 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 21, 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.