Company lists · Data refreshed November 2026

Top 25 Sustainable energy advisors based in Germany

RevenueBase identified 586 company matches for sustainable energy advisors associated with Germany as of November 2026 and tracks 4,383 professional contacts across them, including 1,665 with verified work emails. Berlin is the largest hub.

This list covers company matches for sustainable energy advisors associated with Germany, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
586Companies
4,383Contacts tracked
1,665Verified emails
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The 25 largest sustainable energy advisors based in Germany

Ranked by team size
Top 25 of 586 company matches for sustainable energy advisors based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchFreiburg, GermanyHQ recorded Nov 6, 20261,001-5,000950 contacts →

Exact match

“The Fraunhofer Institute for Solar Energy Systems ISE in Freiburg, Germany is the largest solar research institute in Europe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchFrankfurt, GermanyHQ recorded Nov 6, 2026201-500180 contacts →

Exact match

“Gebäude müssen heute mehr leisten als je zuvor: effizienter werden, Ressourcen schonen und gleichzeitig wirtschaftlich betrieben werden.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMünster, GermanyHQ recorded Nov 6, 2026201-500143 contacts →

Exact match

“Wir erschaffen Zukunft – mit erneuerbaren Energien und innovativen Lösungen!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchFöhren, GermanyHQ recorded Nov 6, 2026201-500139 contacts →

Exact match

“Unabhängigkeit & Energiehoheit gewinnen, Kosten selbststimmt steuern: Schoenergie entwickelt, plant, baut und betreibt nachhaltige Energielösungen für Menschen, Unternehmen und…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMunich, GermanyHQ recorded Nov 6, 202651-200108 contacts →

Exact match

“We empower people to shape a sustainable energy system.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchHürth, GermanyHQ recorded Nov 6, 202651-20060 contacts →

Exact match

“Die Dienstleistungen der envistra GmbH zielen auf eine schnelle und langfristige Kostenreduktion und leisten einen wesentlichen Beitrag zu einer nachhaltigen…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMunich, GermanyHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“In a market full of complexity and empty promises, 42watt makes energy-efficient building modernization simple, reliable, and actionable.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBerlin, GermanyHQ recorded Nov 6, 202651-20050 contacts →

Exact match

“Since its founding 20 years ago, ÖKOTEC stands for intelligent solutions for the reduction of energy and resource consumption.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchKempten (allgäu), GermanyHQ recorded Nov 6, 2026201-50046 contacts →

Exact match

“ENERGIE IN VIELEN FACETTEN PRÄG berät seine Kunden in allen Energiefragen und deckt die gesamte Bandbreite des Energiebedarfs ab: von der Mobilität, über die Wärmeversorgung, bis…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchHamburg, GermanyHQ recorded Nov 6, 202651-20042 contacts →

Exact match

“Als Problemlöser und Beschleuniger für die Energiewende leisten wir unseren Beitrag als kreativer und kompetenter Partner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMunich, GermanyHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“We take responsibility for your project and stand steadfastly by your side in our role as technical expert.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBerlin, GermanyHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“Die Berliner Energieagentur GmbH (BEA) ist ein modernes Energiedienstleistungsunternehmen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHamburg, GermanyHQ recorded Nov 6, 202651-20033 contacts →

Exact match

“RENEWA ist dein unabhängiger Partner für energetische Sanierung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchStuttgart, GermanyHQ recorded Nov 6, 202651-20033 contacts →

Exact match

“Energy-efficient building renovations are complex.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBerlin, GermanyHQ recorded Nov 6, 202611-5032 contacts →

Exact match

“admi Kommunal GmbH – Gemeinsam die kommunale Energiewende vorantreiben Wir unterstützen Städte und Gemeinden dabei, ihre Liegenschaften wirtschaftlich und zukunftsfähig zu…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchFreiburg, GermanyHQ recorded Nov 6, 202651-20030 contacts →

Exact match

“endura kommunal GmbH ist ein Beratungsunternehmen für Kommunen und Stadtwerke, die die Energiezukunft selbst gestalten und erneuerbare Projekte realisieren wollen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLambsheim, GermanyHQ recorded Nov 6, 202651-20029 contacts →

Exact match

“GAIA mbH is a renewables & environment company based out of 28 Jahnstraße, Lambsheim, Rhineland-Palatinate, Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchEssen, GermanyHQ recorded Nov 6, 202651-20027 contacts →

Exact match

“Wir sind.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHanover, GermanyHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Die Klimaschutz- und Energieagentur Niedersachsen ist ein interdisziplinäres Team von Fachleuten, das den Klimaschutz und die Energiewende voranbringen möchte.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBremen, GermanyHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“energiekonsens is the not-for-profit and independent climate protection agency of the Land Bremen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHamburg, GermanyHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“ZEBAU GmbH was founded in September by Hamburg-based universities and three of their professors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWalldorf, GermanyHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Experten Tipps für die Solaranlage, Energiespeicher, die Wallbox, Photovoltaik, Wechselrichter, das autarke Leben, Solarstrom u.v.m.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchHanover, GermanyHQ recorded Nov 6, 202651-20024 contacts →

Exact match

“Wir sind seit 2009 spezialisierter Dienstleister im Bereich der Energie- und Fördergeldberatung mit einer Vielzahl namhafter Kunden aller Gewerke.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchDarmstadt, GermanyHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“Wir helfen Ihnen, Ihre Einsparpotenziale in ihrem Energiesystem zu erkennen, Investitionsentscheidungen zu treffen und eine vernetzte Optimierung herzustellen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchNeu-isenburg, GermanyHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“Die Etanomics Service GmbH wurde gegründet aus dem Nachhaltigkeitsprojekt „Effizienz Plus" der Viessmann Group: Mit unserer Hilfe wurde der Verbrauch von Öl und Gas um 60 Prozent…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 586 sustainable energy advisors based in Germany

See the full list, filter by size, metro and specialty, and access 1,665 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Sustainable energy advisors based in Germany at a glance

As of Nov 6, 2026
38.0%Verified-email coverage
7.5Average contacts per company
1-10Median size (employees)
8.7%Largest-city concentration · Berlin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
378
11-50
150
51-200
22
201-500
5
501-1,000
1
1,001-5,000
1

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 586 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Germany whose business descriptions match “sustainable energy advisors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,665 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “sustainable energy advisors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many sustainable energy advisors are there based in Germany?

RevenueBase identified 586 company matches for sustainable energy advisors associated with Germany as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Fraunhofer-Institut FÜR Solare Energiesysteme ISE tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most sustainable energy advisors?

Berlin leads with 51 company records, followed by Hamburg (27) and Munich (24).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,665 professional contacts with verified work emails tracked across these 586 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.