Company lists · Data verified August 2026

Top 25 Clean energy consulting firms based in Germany

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,770 companies tracked

There are 1,770 clean energy consulting firms headquartered in Germany (RevenueBase, August 2026). RevenueBase tracks 19,530 professional contacts across them, including 7,579 with verified work emails and 486 with mobile numbers. Berlin is the largest hub.

This list covers clean energy consulting firms headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

1,770Companies

19,530Contacts tracked

7,579Verified emails

486Mobile numbers

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The 25 largest clean energy consulting firms based in Germany

Ranked by team size

Top 25 of 1,770 clean energy consulting firms based in Germany, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Roland Berger	Munich	1,001-5,000	4,653	2,078
2	Fichtner	Stuttgart	1,001-5,000	1,281	424
3	PD	Berlin	1,001-5,000	699	5
4	Baywa R.E. Global	Munich	1,001-5,000	447	266
5	Adelphi	Berlin	201-500	270	148
6	Zetcon Ingenieure Gmbh	Berlin	501-1,000	267	101
7	Energielenker Gruppe	Greven	201-500	149	83
8	IPC	Frankfurt	51-200	138	65
9	Enviria	Aue	51-200	134	69
10	Schoenergie	Sankt Ingbert	201-500	131	81
11	OTC Flow	Frankfurt Am Main	51-200	124	73
12	BET Consulting Gmbh	Aachen	51-200	110	49
13	Avencore	Heidelberg	51-200	96	71
14	MVV Enamic Gmbh	Mannheim	201-500	92	56
15	Alfa Energy An Edison Energy Company	n/a	201-500	89	50
16	Kodiak Gmbh	Berlin	51-200	87	47
17	Ttsp HWP Planungsgesellschaft MBH	Frankfurt Am Main	51-200	81	11
18	First Climate	Bad Vilbel	51-200	77	40
19	Comanos	Hamburg	51-200	72	13
20	Consistency	Duesseldorf	51-200	69	44
21	SGB Energie Gmbh	Grobenzell	51-200	58	26
22	Assmann Emutec	Lutherstadt Wittenberg	51-200	57	31
23	Envistra Gmbh	Hurth	51-200	55	23
24	Human Dynamics	Cologne	51-200	51	2
25	Wolff & Müller Energy Gmbh	Ludwigsburg	51-200	49	33

Showing 25 of 1,770 clean energy consulting firms based in Germany

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Clean energy consulting firms based in Germany at a glance

As of Aug 28, 2026

1-10Median size (employees)

BerlinLargest hub · 193 HQs

486Contacts with mobile numbers

34Emails re-verified in last 30 days

Companies by employee count

1-10

1,112

11-50

457

51-200

102

201-500

501-1,000

1,001-5,000

5,001-10,000

Clean energy consulting firms by metro

Metro	Companies
Clean energy consulting firms in Berlin	193
Clean energy consulting firms in Hamburg	102
Clean energy consulting firms in Munchen	45
Clean energy consulting firms in Dusseldorf	41
Clean energy consulting firms in Munich	40
Clean energy consulting firms in Koln	30
Clean energy consulting firms in Frankfurt	27

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “clean energy consulting firms”, with match quality audited by blind human judging, and headquartered in Germany.
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: Contact records re-verify on a rolling cadence; 34 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many clean energy consulting firms are there based in Germany?

There are 1,770 clean energy consulting firms headquartered in Germany as of August 2026 (RevenueBase).

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 clean energy consulting firms?

Berlin leads with 193 headquartered companies, followed by Hamburg (102) and Munchen (45).

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 7,579 verified decision-maker contacts tracked across these 1,770 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.