Company lists · Data refreshed November 2026

Top 25 Geothermal energy engineering services based in Germany

RevenueBase identified 402 company matches for geothermal energy engineering services associated with Germany as of November 2026 and tracks 2,320 professional contacts across them, including 902 with verified work emails. Berlin is the largest hub.

This list covers company matches for geothermal energy engineering services 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
402Companies
2,320Contacts tracked
902Verified emails
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The 25 largest geothermal energy engineering services based in Germany

Ranked by team size
Top 25 of 402 company matches for geothermal energy engineering services 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 matchBerlin, GermanyHQ recorded Nov 6, 202651-20093 contacts →

Exact match

“Die BLS Energieplan GmbH wurde 1984 gegründet und hat ihr Portfolio an Ingenieurdienstleistungen seither kontinuierlich erweitert.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBad Wurzach, GermanyHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“BauGrund Süd Gesellschaft für Geothermie mbH is an utilities company based out of MAYBACHSTRASSE 5, Bad Wurzach, Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLilienthal, GermanyHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“ö ü –, Als unabhängiges ü ü entwickeln wir innovative Lösungen für eine sichere und wirtschaftliche Energie- und Wasserversorgung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchNorderstedt, GermanyHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“Assmann Emutec ist ein Unternehmen des BKW Engineering - Network of Excellence® – dem größten Engineering Netzwerk im deutschsprachigen Raum.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchDortmund, GermanyHQ recorded Nov 6, 202651-20045 contacts →

Exact match

“Als anerkanntes Engineering-Unternehmen für Energiespeicher- und Energiesystemdienstleistungen führt die ESK GmbH seit vielen Jahren nationale und internationale Projekte…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact 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
7Exact matchBerlin, GermanyHQ recorded Nov 6, 202651-20037 contacts →

Exact match

“The core competencies of the GuD Group of companies comprise the applied geosciences, geotechnics, dynamics and environmental engineering.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAachen, GermanyHQ recorded Nov 6, 202611-5034 contacts →

Exact match

“Energy consulting for industry and engineering for thermal, process, and energy systems – solving complex challenges and maximizing efficiency through simulation, thermodynamics…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHessisch Lichtenau, GermanyHQ recorded Nov 6, 202651-20031 contacts →

Exact match

“H.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAscheberg, GermanyHQ recorded Nov 6, 202651-20031 contacts →

Exact match

“Die Daldrup & Söhne AG ist Spezialist für Bohrtechnik und die Erschließung geologischer Ressourcen in Deutschland mit Sitz in Ascheberg, Nordrhein-Westfalen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchGröbenzell, GermanyHQ recorded Nov 6, 202651-20030 contacts →

Exact match

“Die Nickol & Partner AG ist ein interdisziplinäres Planungs- und Ingenieurbüro mit Standorten in Gröbenzell und München.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchPeine, GermanyHQ recorded Nov 6, 2026201-50028 contacts →

Exact match

“Die GERMAN WATER and ENERGY GROUP (GWE) ist Hersteller richtungsweisender Produkte und Entwickler integrierter Anwendungen für den Brunnenbau und die Geothermie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchEssen, GermanyHQ recorded Nov 6, 202611-5028 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLeimen, GermanyHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Die GEF Ingenieur AG ist seit über 30 Jahren als unabhängiger Experte im Bereich der Wärmeversorgung etabliert.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchCelle, GermanyHQ recorded Nov 6, 202651-20026 contacts →

Exact match

“Seit 60 Jahren sind wir als Beratende Ingenieure ein leistungsstarker Partner im Tiefbau.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchStuhr, GermanyHQ recorded Nov 6, 202651-20024 contacts →

Exact match

“ANTARES provides international experience in a wide spectrum of geophysical techniques, ranging from borehole geophysics, borehole seismic, cavern logging, environmental, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMunich, GermanyHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“ERDWERK GmbH is an independent planning office offering consulting services in the fields of geothermal energy, geology, hydrogeology, energetics and drilling technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBerlin, GermanyHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“Als kreatives Ingenieurbüro unterstützen wir unsere Kunden und Partner mit Know-how und zukunftsweisenden Technologien: von der Beratung und Planung, über die Steuerung bis hin…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBerlin, GermanyHQ recorded Nov 6, 202651-20021 contacts →

Exact match

“PLE bietet Beratung und Engineering für Anlagen zum Transport, zur Behandlung und Aufbereitung sowie zur Speicherung und Lagerung von Energie und Medien in der Energie, Gas, Öl-…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBerlin, GermanyHQ recorded Nov 6, 202651-20021 contacts →

Exact match

“Als inhabergeführtes Ingenieurbüro mit 35 Mitarbeitenden liegt peil und partner ingenieure GmbH zentral im Herzen Berlins.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNeubrandenburg, GermanyHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“Geothermie Neubrandenburg GmbH (GTN) is an internationally active consultancy and planning office of engineers and geoscientsits.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchFreiberg, GermanyHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“eine Gesellschaft der ENGIE-Gruppe, ist ein führendes Unternehmen für Wärme- und Kältelösungen im Bereich der Oberflächennahen Geothermie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchRhauderfehn, GermanyHQ recorded Nov 6, 202651-20016 contacts →

Exact match

“Natelberg Gebäudetechnik steht seit über 40 Jahren für moderne, zuverlässige und ganzheitliche Lösungen rund um die Gebäudetechnik.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWestheim, GermanyHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“AQUASOIL Ingenieure & Geologen GmbH excels in groundwater and surface water modelling, geotechnics, contaminated sites, water mangement, hydrogeology, hydrology, soil and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSaarbrücken, GermanyHQ recorded Nov 6, 202651-20014 contacts →

Exact match

“Die FAMIS GmbH ist in den Geschäftsfeldern Energie- und Ingenieurdienstleistungen sowie technische Gebäudeservices mit innovativen Contracting-Modellen tätig.”

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

Showing 25 of 402 geothermal energy engineering services based in Germany

See the full list, filter by size, metro and specialty, and access 902 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geothermal energy engineering services based in Germany at a glance

As of Nov 6, 2026
38.9%Verified-email coverage
5.8Average contacts per company
1-10Median size (employees)
7.7%Largest-city concentration · Berlin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
224
11-50
109
51-200
32
201-500
3
501-1,000
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 402 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 “geothermal energy engineering services” 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 902 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 “geothermal energy engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geothermal energy engineering services are there based in Germany?

RevenueBase identified 402 company matches for geothermal energy engineering services 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?

BLS Energieplan Gmbh tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most geothermal energy engineering services?

Berlin leads with 31 company records, followed by Munich (13) and Hamburg (9).

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 902 professional contacts with verified work emails tracked across these 402 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.