Company lists · Data refreshed August 2026

Top 25 Clean energy consultancy companies based in Germany

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

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 1,920 companies tracked

RevenueBase identified 1,920 clean energy consultancy companies headquartered in Germany as of August 2026 and tracks 18,062 professional contacts across them, including 6,812 with verified work emails and 314 with mobile numbers. Berlin is the largest hub.

This list covers clean energy consultancy companies 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 August 31, 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 RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review

1,920Companies

18,062Contacts tracked

6,812Verified emails

314Mobile numbers

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The 25 largest clean energy consultancy companies based in Germany

Ranked by team size

Top 25 of 1,920 clean energy consultancy companies based in Germany, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to clean energy consultancy companies: 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	Fichtner	Strong evidence	Stuttgart, Germany	1,001-5,000	1,281 contacts →
	Strong 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 Aug 31, 2026
2	PD	Indirect evidence	Berlin, Germany	1,001-5,000	699 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 Aug 31, 2026
3	Q Energy	Partial evidence	Berlin, Germany	201-500	565 contacts →
	Partial evidence “Q ENERGY is Europe’s 360° green energy company.” Source: RevenueBase Database · checked Aug 31, 2026
4	Lichtblick SE	Partial evidence	Hamburg, Germany	501-1,000	448 contacts →
	Partial evidence “Here at LichtBlick, we create an excellent climate – with green energy for at home and on the move.” Source: RevenueBase Database · checked Aug 31, 2026
5	Baywa R.E. Global	Indirect evidence	Munich, Germany	1,001-5,000	447 contacts →
	Indirect evidence “At BayWa r.e.” Source: RevenueBase Database · checked Aug 31, 2026
6	GKW Consult	Indirect evidence	Mannheim, Germany	201-500	288 contacts →
	Indirect evidence “GKW Consult GmbH, a company of GFA Group, has developed and implemented projects and advisory services for public and private clients for 70 years in more than 50 countries…” Source: RevenueBase Database · checked Aug 31, 2026
7	Adelphi	Partial evidence	Berlin, Germany	201-500	270 contacts →
	Partial evidence “adelphi consult is a leading independent consultancy specialising in climate, environment and development.” Source: RevenueBase Database · checked Aug 31, 2026
8	Zetcon Ingenieure Gmbh	Partial evidence	Berlin, Germany	501-1,000	267 contacts →
	Partial 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 Aug 31, 2026
9	Energielenker Gruppe	Partial evidence	Greven, Germany	201-500	149 contacts →
	Partial evidence “Wir erschaffen Zukunft – mit erneuerbaren Energien und innovativen Lösungen!” Source: RevenueBase Database · checked Aug 31, 2026
10	Schoenergie	Partial evidence	Sankt Ingbert, Germany	201-500	131 contacts →
	Partial evidence “Unabhängigkeit & Energiehoheit gewinnen, Kosten selbststimmt steuern: Schoenergie entwickelt, plant, baut und betreibt nachhaltige Energielösungen für Menschen, Unternehmen und…” Source: RevenueBase Database · checked Aug 31, 2026
11	Green Planet Energy EG	Partial evidence	Hamburg, Germany	201-500	118 contacts →
	Partial evidence “Wir von Green Planet Energy (bis 2021 Greenpeace Energy) haben ein klares Ziel: die Energiewende, also 100 % erneuerbare Energien.” Source: RevenueBase Database · checked Aug 31, 2026
12	BET Consulting Gmbh	Partial evidence	Aachen, Germany	51-200	110 contacts →
	Partial evidence “As pioneers and experts, BET shapes the energy landscape of tomorrow.” Source: RevenueBase Database · checked Aug 31, 2026
13	Björnsen Beratende Ingenieure	Partial evidence	Koblenz, Germany	201-500	108 contacts →
	Partial evidence “Wir sind Experten für Wasser, Umwelt, Ingenieurbau, Informatik, Energie und Architektur.” Source: RevenueBase Database · checked Aug 31, 2026
14	TRAWA	Partial evidence	Berlin, Germany	51-200	105 contacts →
	Partial evidence “Make energy a driver of business success.” Source: RevenueBase Database · checked Aug 31, 2026
15	Icon-Institute Consulting Gruppe	Indirect evidence	Koeln, Germany	51-200	102 contacts →
	Indirect evidence “What We Do ICON-INSTITUTE Consulting Group closely works with its clients in the implementation of tailor-made and hands-on solutions in the fields of management and development…” Source: RevenueBase Database · checked Aug 31, 2026
16	Avencore	Indirect evidence	Heidelberg, Germany	51-200	96 contacts →
	Indirect evidence “Your Strategic Partner in the Industry Avencore is an international consulting firm specialized in the industrial sector, driven by a passionate team of 130 experts.” Source: RevenueBase Database · checked Aug 31, 2026
17	MVV Enamic Gmbh	Partial evidence	Mannheim, Germany	201-500	92 contacts →
	Partial evidence “MVV Enamic bietet als B2B-Lösungseinheit der MVV Energie AG Geschäftskunden ganzheitliche Energielösungen aus einer Hand.” Source: RevenueBase Database · checked Aug 31, 2026
18	Alfa Energy An Edison Energy Company	Strong evidence	Germany	201-500	89 contacts →
	Strong evidence “Alfa Energy Group (an Edison Energy company) is an international energy, sustainability and technology consultant partner with 200 employees over four international locations.” Source: RevenueBase Database · checked Aug 31, 2026
19	Kodiak Gmbh	Indirect evidence	Berlin, Germany	51-200	87 contacts →
	Indirect evidence “KODIAK's SERVICES: PROJECT DEVELOPMENT ADVISORY - Project development and strategic planning - Market advisory - Advisory in technology and location - Project governance and…” Source: RevenueBase Database · checked Aug 31, 2026
20	Wattfox	Partial evidence	Freiburg Im Breisgau, Germany	51-200	78 contacts →
	Partial evidence “Vom Start Up zum Marktführer: Smarte Entscheidungen rund um Haus und Energie, dafür steht WattFox seit 2011.” Source: RevenueBase Database · checked Aug 31, 2026
21	Intelligent Energy System Services Gmbh Ie2s	Indirect evidence	Stuttgart, Germany	51-200	78 contacts →
	Indirect evidence “Herausforderungen von Heute als Chancen für Morgen nutzen.” Source: RevenueBase Database · checked Aug 31, 2026
22	First Climate	Partial evidence	Bad Vilbel, Germany	51-200	77 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 Aug 31, 2026
23	Baurconsult Architekten Ingenieure	Indirect evidence	Teltow, Germany	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 Aug 31, 2026
24	Enervis Energy Advisors Gmbh	Strong evidence	Berlin, Germany	51-200	67 contacts →
	Strong evidence “enervis is a specialized management consultancy for the energy industry.” Source: RevenueBase Database · checked Aug 31, 2026
25	Assmann Emutec	Indirect evidence	Lutherstadt Wittenberg, Germany	51-200	57 contacts →
	Indirect evidence “Assmann Emutec ist ein Unternehmen des BKW Engineering - Network of Excellence® – dem größten Engineering Netzwerk im deutschsprachigen Raum.” Source: RevenueBase Database · checked Aug 31, 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: clean energy consultancy companies. 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 clean energy consultancy companies.
Partial evidence: Its own public description names part of clean energy consultancy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clean energy consultancy companies. 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 1,920 clean energy consultancy companies based in Germany

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Clean energy consultancy companies based in Germany at a glance

As of Aug 31, 2026

37.7%Verified-email coverage

1.7%Mobile-number coverage

9.4Average contacts per company

1-10Median size (employees)

10.2%Largest-city concentration · Berlin

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

1,155

11-50

513

51-200

129

201-500

501-1,000

1,001-5,000

5,001-10,000

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 clean energy consultancy companies, 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 “clean energy consultancy companies”. 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 clean energy consultancy companies), 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 clean energy consultancy companies, 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, 6,812 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 August 31, 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.

Clean energy consultancy companies by metro

Clean energy consultancy companies in Berlin195
Clean energy consultancy companies in Hamburg108
Clean energy consultancy companies in Munchen47
Clean energy consultancy companies in Munich40
Clean energy consultancy companies in Dusseldorf40
Clean energy consultancy companies in Bremen31
Clean energy consultancy companies 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 clean energy consultancy companies, 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 clean energy consultancy companies are there based in Germany?

RevenueBase identified 1,920 clean energy consultancy companies headquartered in Germany as of August 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?

Fichtner, headquartered in Stuttgart, tops this list with the largest team on record.

Which city has the most clean energy consultancy companies?

Berlin leads with 195 headquartered companies, followed by Hamburg (108) and Munchen (47).

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 6,812 verified decision-maker contacts tracked across these 1,920 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.