Company lists · Data refreshed September 2026

Top 25 Climate and environmental consulting firms based in Germany

Name: Climate and environmental 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 708 companies tracked

RevenueBase identified 708 climate and environmental consulting firms headquartered in Germany as of September 2026 and tracks 7,803 professional contacts across them, including 2,945 with verified work emails. Berlin is the largest hub.

This list covers climate and environmental 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

708Companies

7,803Contacts tracked

2,945Verified emails

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The 25 largest climate and environmental consulting firms based in Germany

Ranked by team size

Top 25 of 708 climate and environmental 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 climate and environmental 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	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
2	Climatepartner	Partial evidence	München, GermanyHQ checked Sep 21, 2026	501-1,000	376 contacts →
	Partial evidence “ClimatePartner makes climate action valuable for every company at any stage of their journey.” Source: RevenueBase Database · checked Sep 21, 2026
3	ILF Consulting Engineers In Germany	Partial evidence	München, GermanyHQ checked Sep 21, 2026	501-1,000	337 contacts →
	Partial evidence “ILF Consulting Engineers Germany ist Teil der ILF-Gruppe und ein international tätiges Ingenieur- und Beratungsunternehmen, welches seine Kunden bei der erfolgreichen Umsetzung…” Source: RevenueBase Database · checked Sep 21, 2026
4	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
5	Adelphi	Strong evidence	Berlin, GermanyHQ checked Sep 21, 2026	201-500	269 contacts →
	Strong evidence “adelphi consult is a leading independent consultancy specialising in climate, environment and development.” Source: RevenueBase Database · checked Sep 21, 2026
6	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
7	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
8	CES Consulting Engineers Salzgitter Gmbh	Partial evidence	Braunschweig, GermanyHQ checked Sep 21, 2026	51-200	165 contacts →
	Partial evidence “CES Consulting Engineers Salzgitter GmbH is an independent consulting engineering company with worldwide experience.” Source: RevenueBase Database · checked Sep 21, 2026
9	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
10	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
11	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
12	First Climate	Partial evidence	Bad Vilbel, GermanyHQ checked Sep 21, 2026	51-200	79 contacts →
	Partial 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
13	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
14	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
15	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
16	Transsolar Klimaengineering	Indirect evidence	Stuttgart, GermanyHQ checked Sep 21, 2026	51-200	64 contacts →
	Indirect evidence “High Comfort – Low Impact Transsolar KlimaEngineering ist ein international tätiges Ingenieurbüro.” Source: RevenueBase Database · checked Sep 21, 2026
17	Perspectives Climate Group	Strong evidence	Freiburg Im Breisgau, GermanyHQ checked Sep 21, 2026	51-200	63 contacts →
	Strong evidence “Perspectives drives climate action through leading research and supporting our clients' environmental ambitions.” Source: RevenueBase Database · checked Sep 21, 2026
18	SCC Scientific Consulting Company, Part Of Ramboll	Indirect evidence	Bad Kreuznach, GermanyHQ checked Sep 21, 2026	n/a	61 contacts →
	Indirect evidence “SCC is now part of Ramboll, a global architecture, engineering and consultancy company, creating sustainable solutions across energy, real estate, transport, water, waste…” Source: RevenueBase Database · checked Sep 21, 2026
19	ARQUM	Partial evidence	München, GermanyHQ checked Sep 21, 2026	51-200	59 contacts →
	Partial evidence “Arqum stands for work safety, quality and environmental management.” Source: RevenueBase Database · checked Sep 21, 2026
20	BFE Institut FÜR Energie UND Umwelt Gmbh	Indirect evidence	Mannheim, GermanyHQ checked Sep 21, 2026	51-200	57 contacts →
	Indirect evidence “Das BFE Institut für Energie und Umwelt GmbH ist ein Unternehmen der MVV Energie AG und zählt mit über Projekten und ca.” Source: RevenueBase Database · checked Sep 21, 2026
21	Forliance	Indirect evidence	Bonn, GermanyHQ checked Sep 21, 2026	51-200	54 contacts →
	Indirect evidence “We believe in the power of alliances.” Source: RevenueBase Database · checked Sep 21, 2026
22	IFEU	Indirect evidence	Heidelberg, GermanyHQ checked Sep 21, 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 21, 2026
23	Response	Indirect evidence	Frankfurt, GermanyHQ checked Sep 21, 2026	51-200	51 contacts →
	Indirect evidence “response is a multiple award-winning, international consultancy specializing in sustainability, ESG, and regenerative business.” Source: RevenueBase Database · checked Sep 21, 2026
24	Geo-Net Umweltconsulting Gmbh	Partial evidence	Hannover, GermanyHQ checked Sep 21, 2026	51-200	47 contacts →
	Partial evidence “GEO-NET is an interdisciplinary and technology-oriented company concentrating on Renewable Energies, Environmental Meteorology and Environmental Planning.” Source: RevenueBase Database · checked Sep 21, 2026
25	Systain Consulting	Partial evidence	Hamburg, GermanyHQ checked Sep 21, 2026	11-50	47 contacts →
	Partial evidence “As a management consultancy we have been tackling global challenges in environmental and human rights issues for over 20 years.” 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: climate and environmental 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 climate and environmental consulting firms.
Partial evidence: Its own public description names part of climate and environmental consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name climate and environmental 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 708 climate and environmental consulting firms based in Germany

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Climate and environmental consulting firms based in Germany at a glance

As of Sep 21, 2026

37.7%Verified-email coverage

11.0Average contacts per company

1-10Median size (employees)

11.3%Largest-city concentration · Berlin

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

415

11-50

211

51-200

201-500

501-1,000

1,001-5,000

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 708 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 climate and environmental 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 “climate and environmental 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 climate and environmental 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 climate and environmental 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, 2,945 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.

Climate and environmental consulting firms by metro

Climate and environmental consulting firms in Berlin80
Climate and environmental consulting firms in Hamburg43

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 climate and environmental 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 climate and environmental consulting firms are there based in Germany?

RevenueBase identified 708 climate and environmental 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?

PD, headquartered in Berlin, tops this list with the largest team on record.

Which city has the most climate and environmental consulting firms?

Berlin leads with 80 headquartered companies, followed by Hamburg (43) and Munchen (24).

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 2,945 verified decision-maker contacts tracked across these 708 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.