Company lists · Data refreshed September 2026

Top 25 Geothermal reservoir engineering firms based in Switzerland

Name: Geothermal reservoir engineering firms based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 72 companies tracked

RevenueBase identified 72 geothermal reservoir engineering firms headquartered in Switzerland as of September 2026 and tracks 466 professional contacts across them, including 138 with verified work emails. Bern is the largest hub.

This list covers geothermal reservoir engineering firms headquartered in Switzerland, 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 16, 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 16, 2026 86% judged on-target in blind review

72Companies

466Contacts tracked

138Verified emails

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The 25 largest geothermal reservoir engineering firms based in Switzerland

Ranked by team size

Top 25 of 72 geothermal reservoir engineering firms based in Switzerland, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal reservoir engineering 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	DE Cérenville Géotechnique SA	Indirect evidence	Chavannes-près-renens, SwitzerlandHQ checked Sep 16, 2026	51-200	45 contacts →
	Indirect evidence “De Cérenville Géotechnique regroupe sous une même entité un bureau d’ingénieurs-conseils (ICOS) et un service d’essais et mesures (SEM), tous deux spécialisés dans les domaines de…” Source: RevenueBase Database · checked Sep 16, 2026
2	SB Technique SA	Indirect evidence	Genève, SwitzerlandHQ checked Sep 16, 2026	11-50	18 contacts →
	Indirect evidence “SB technique est un bureau d'Ingénieur Conseil en chauffage, ventilation, climatisation et sécurité du bâtiment développant des concepts énergétiques ambitieux pour des…” Source: RevenueBase Database · checked Sep 16, 2026
3	Norbert SA Géologie DE L'ingénieur	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 16, 2026	11-50	16 contacts →
	Indirect evidence “Depuis 1960, nous proposons des prestations de conseil en matière de géologie de l’ingénieur et d’hydrogéologie technique.” Source: RevenueBase Database · checked Sep 16, 2026
4	GEO Explorers AG	Indirect evidence	Liestal, SwitzerlandHQ checked Sep 16, 2026	11-50	15 contacts →
	Indirect evidence “Geo Explorers AG bietet geologische und geophysikalische Dienstleistungen und Messtechnik im Bereich Erdwärmenutzung, Grundwasser und Untergrunderkundung an.” Source: RevenueBase Database · checked Sep 16, 2026
5	Geo-Energie Suisse	Partial evidence	Zurich, SwitzerlandHQ checked Sep 16, 2026	11-50	13 contacts →
	Partial evidence “Geo-Energie Suisse AG is Switzerland’s center of excellence for deep geothermal energy.” Source: RevenueBase Database · checked Sep 16, 2026
6	Kellerhals Haefeli AG	Indirect evidence	Bern, SwitzerlandHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “Willkommen!” Source: RevenueBase Database · checked Sep 16, 2026
7	Geotechnisches Institut AG	Indirect evidence	Bern, SwitzerlandHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “Wir sind ein unabhängiges Dienstleistungs- und Beratungsunternehmen und arbeiten für Sie in den folgenden Bereichen- Geologie und Geotechnik - Altlasten, Bauschadstoffe und…” Source: RevenueBase Database · checked Sep 16, 2026
8	Enerdrape	Partial evidence	Ecublens, SwitzerlandHQ checked Sep 16, 2026	11-50	9 contacts →
	Partial evidence “Enerdrape operates the world's first prefabricated geothermal panel technology.” Source: RevenueBase Database · checked Sep 16, 2026
9	TK Consult AG	Partial evidence	Zurich, SwitzerlandHQ checked Sep 16, 2026	1-10	8 contacts →
	Partial evidence “TK Consult AG offers an extensive service catalog in environmental and hydraulic engineering consulting, with special emphasis on the numerical modelling of hydrogeology…” Source: RevenueBase Database · checked Sep 16, 2026
10	Keller Lorenz AG	Indirect evidence	Stadt Luzern, SwitzerlandHQ checked Sep 16, 2026	11-50	7 contacts →
	Indirect evidence “Die Keller + Lorenz AG ist ein in der Zentralschweiz seit 1971 erfolgreich etabliertes, wirtschaftlich unabhängiges Beratungsbüro.” Source: RevenueBase Database · checked Sep 16, 2026
11	Eberhard & Partner AG	Partial evidence	Aarau, SwitzerlandHQ checked Sep 16, 2026	1-10	7 contacts →
	Partial evidence “Das Team der EBERHARD & Partner AG steht Ihnen jederzeit für Fragen rund um die Nutzung von geothermischer Energie, Altlasten, ingenieurgeologischen Fragen oder Hydrogeologie zur…” Source: RevenueBase Database · checked Sep 16, 2026
12	Géoval Ingénieurs-Géologues SA	Indirect evidence	Sion, SwitzerlandHQ checked Sep 16, 2026	1-10	7 contacts →
	Indirect evidence “GéoVal Ingénieurs-Géologues SA est un bureau d’études basé à Sion, actif depuis en Valais dans les domaines de la géotechnique, des dangers naturels, de l’hydrogéologie, de la…” Source: RevenueBase Database · checked Sep 16, 2026
13	GER Geneva Earth Resources	Indirect evidence	Geneva, SwitzerlandHQ checked Sep 16, 2026	1-10	7 contacts →
	Indirect evidence “GER Geneva Earth Resources is a consultancy company based in Geneva with more than 15 years of know-how.” Source: RevenueBase Database · checked Sep 16, 2026
14	BTG Büro FÜR Technische Geologie AG	Indirect evidence	Sargans, SwitzerlandHQ checked Sep 16, 2026	11-50	6 contacts →
	Indirect evidence “Unser Arbeitsalltag ist manchmal abenteuerlich und pionierhaft.” Source: RevenueBase Database · checked Sep 16, 2026
15	Dr. Bernasconi AG	Indirect evidence	Sargans, SwitzerlandHQ checked Sep 16, 2026	11-50	6 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
16	Zerogeo Energy Gmbh	Partial evidence	Zug, SwitzerlandHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “We are a leading European Renewable, Low Carbon Geothermal Energy company delivering delivering Energy From Rocks™.” Source: RevenueBase Database · checked Sep 16, 2026
17	Geoalps Engineering SA	Indirect evidence	Faido, SwitzerlandHQ checked Sep 16, 2026	11-50	5 contacts →
	Indirect evidence “La nostra ditta, con sede a Faido (Ticino, Svizzera) è attiva dal 1994 a livello nazionale ed internazionale nel ramo delle scienze della terra.” Source: RevenueBase Database · checked Sep 16, 2026
18	PNP Geologie & Geotechnik AG	Indirect evidence	Muttenz, SwitzerlandHQ checked Sep 16, 2026	11-50	5 contacts →
	Indirect evidence “Die PNP Geologie & Geotechnik AG ist ein Traditionsbetrieb mit über 30-jähriger Erfahrung in der Nordwestschweiz.” Source: RevenueBase Database · checked Sep 16, 2026
19	Geoservizi Sagl	Partial evidence	Caslano, SwitzerlandHQ checked Sep 16, 2026	1-10	5 contacts →
	Partial evidence “Service company in the fields of geology, geotechnics, geophysics, hydrogeology, geothermal energy, natural hazards, radon.” Source: RevenueBase Database · checked Sep 16, 2026
20	Clozed Loop Energy	Indirect evidence	Lucerne, SwitzerlandHQ checked Sep 16, 2026	1-10	5 contacts →
	Indirect evidence “CLEAG's approach is a robust, market-aligned response to the global drive for sustainable base load energy solutions.” Source: RevenueBase Database · checked Sep 16, 2026
21	Swiss GEO Energy	Partial evidence	Payerne, SwitzerlandHQ checked Sep 16, 2026	11-50	4 contacts →
	Partial evidence “Exploration, Production and Development of Geothermal Resources.” Source: RevenueBase Database · checked Sep 16, 2026
22	Hammerdrum LTD	Strong evidence	Zug, SwitzerlandHQ checked Sep 16, 2026	1-10	3 contacts →
	Strong evidence “At HammerDrum AG, we develop groundbreaking drilling technologies for geothermal energy, tunneling, and specialist foundation engineering.” Source: RevenueBase Database · checked Sep 16, 2026
23	Algeo AG	Partial evidence	St. Margrethen Sg, SwitzerlandHQ checked Sep 16, 2026	1-10	2 contacts →
	Partial evidence “Grosshandel und Beratung im Bereich der Geothermie und Bohrtechnik.” Source: RevenueBase Database · checked Sep 16, 2026
24	Separatus	Indirect evidence	St Margrethen, SwitzerlandHQ checked Sep 16, 2026	1-10	2 contacts →
	Indirect evidence “Die Zukunft in der Erdwärme hat begonnen.” Source: RevenueBase Database · checked Sep 16, 2026
25	Baustatik Rubino	Indirect evidence	Minusio, SwitzerlandHQ checked Sep 16, 2026	1-10	2 contacts →
	Indirect evidence “Baustatik Rubino SAGL è uno studio di ingegneria strutturale e geotecnica a Minusio (TI), specializzato in analisi sismica, progettazione e modellazione di strutture, rilievi…” Source: RevenueBase Database · checked Sep 16, 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: geothermal reservoir engineering 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 geothermal reservoir engineering firms.
Partial evidence: Its own public description names part of geothermal reservoir engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal reservoir engineering 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 72 geothermal reservoir engineering firms based in Switzerland

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Geothermal reservoir engineering firms based in Switzerland at a glance

As of Sep 16, 2026

29.6%Verified-email coverage

6.5Average contacts per company

1-10Median size (employees)

5.6%Largest-city concentration · Bern

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 72 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 geothermal reservoir engineering 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 Switzerland whose own description of what they do matches “geothermal reservoir engineering 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 geothermal reservoir engineering 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 geothermal reservoir engineering firms, and records with no verified work email. Companies headquartered outside Switzerland 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, 138 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 16, 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.

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 geothermal reservoir engineering 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 geothermal reservoir engineering firms are there based in Switzerland?

RevenueBase identified 72 geothermal reservoir engineering firms headquartered in Switzerland 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?

DE Cérenville Géotechnique SA, headquartered in Chavannes-Pres-Renens, tops this list with the largest team on record.

Which city has the most geothermal reservoir engineering firms?

Bern leads with 4 headquartered companies, followed by Zurich (4) and Bellinzona (3).

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 138 verified decision-maker contacts tracked across these 72 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 16, 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.