Company lists · Data refreshed September 2026

Top 25 Geothermal system companies based in Switzerland

Name: Geothermal system companies based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 190 companies tracked

RevenueBase identified 190 geothermal system companies headquartered in Switzerland as of September 2026 and tracks 740 professional contacts across them, including 291 with verified work emails. Geneve is the largest hub.

This list covers geothermal system companies 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 20, 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 20, 2026 86% judged on-target in blind review

190Companies

740Contacts tracked

291Verified emails

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The 25 largest geothermal system companies based in Switzerland

Ranked by team size

Top 25 of 190 geothermal system companies based in Switzerland, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal system 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	Heim AG Heizsysteme	Indirect evidence	Aadorf, SwitzerlandHQ checked Sep 20, 2026	51-200	66 contacts →
	Indirect evidence “Seit 1989 begeistern wir unsere Kunden mit massgeschneiderten Lösungen und unvergleichlichen Dienstleistungen im Bereich der erneuerbaren Energien.” Source: RevenueBase Database · checked Sep 20, 2026
2	Planeco Gmbh	Indirect evidence	Arlesheim, SwitzerlandHQ checked Sep 20, 2026	51-200	50 contacts →
	Indirect evidence “Willkommen bei Planeco GmbH – deiner wegweisenden Partnerin für innovative Energielösungen!” Source: RevenueBase Database · checked Sep 20, 2026
3	Services Plus Energies SA	Indirect evidence	Bernex, SwitzerlandHQ checked Sep 20, 2026	51-200	31 contacts →
	Indirect evidence “Depuis 15 ans à votre service, Services Plus Energies est une entreprise spécialisée en Chauffage, Ventilation et Climatisation.” Source: RevenueBase Database · checked Sep 20, 2026
4	Thermex SA	Indirect evidence	Eclépens, SwitzerlandHQ checked Sep 20, 2026	51-200	22 contacts →
	Indirect evidence “La Société Thermex est dirigée par Nicolas Faivre qui a repris l’entreprise à 100% en 2007 et depuis 2019 un nouvel actionnaire s’est associé avec Nicolas Faivre, le Groupe…” Source: RevenueBase Database · checked Sep 20, 2026
5	Guggisberg Kurz AG	Indirect evidence	Ostermundigen, SwitzerlandHQ checked Sep 20, 2026	51-200	18 contacts →
	Indirect evidence “Mit über 90 erfahrene Mitarbeitenden ist die Guggisberg Kurz AG in der Lage sowohl grosse Objekte auszuführen, als auch sehr flexibel zu agieren.” Source: RevenueBase Database · checked Sep 20, 2026
6	AFM SA	Indirect evidence	Bardonnex, SwitzerlandHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “AFM SA – Votre expert en confort et énergie durable depuis plus de 20 ans Basée à Genève, AFM SA est une entreprise suisse spécialisée dans l’installation, le dépannage et la…” Source: RevenueBase Database · checked Sep 20, 2026
7	GEO Explorers AG	Indirect evidence	Liestal, SwitzerlandHQ checked Sep 20, 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 20, 2026
8	Schmid Amrhein AG	Indirect evidence	Luzern, SwitzerlandHQ checked Sep 20, 2026	51-200	13 contacts →
	Indirect evidence “Unsere Wurzeln reichen zurück bis ins Jahr 1947 – doch unser Blick ist klar auf die Zukunft gerichtet.” Source: RevenueBase Database · checked Sep 20, 2026
9	Geo-Energie Suisse	Partial evidence	Zurich, SwitzerlandHQ checked Sep 20, 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 20, 2026
10	Borobotics AG	Partial evidence	Winterthur, SwitzerlandHQ checked Sep 20, 2026	1-10	10 contacts →
	Partial evidence “With an autonomous and compact drilling robot for boreholes for geothermal probes, we accelerate the heat transition for the net zero goals by reducing the price of the drilling…” Source: RevenueBase Database · checked Sep 20, 2026
11	Exergo	Indirect evidence	Yverdon, SwitzerlandHQ checked Sep 20, 2026	1-10	10 contacts →
	Indirect evidence “We are a team of engineers and business experts with experience in energy networks design and control.” Source: RevenueBase Database · checked Sep 20, 2026
12	Neukom Marzolo AG	Indirect evidence	Rafz, SwitzerlandHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “Die Neukom Marzolo AG mit Sitz in Rafz und Uster ist Ihr kompetenter Partner für innovative, ökonomische und ökologische Lösungen in der Gebäudetechnik.” Source: RevenueBase Database · checked Sep 20, 2026
13	Enerdrape	Partial evidence	Ecublens, SwitzerlandHQ checked Sep 20, 2026	11-50	9 contacts →
	Partial evidence “Enerdrape operates the world's first prefabricated geothermal panel technology.” Source: RevenueBase Database · checked Sep 20, 2026
14	Faivre Energie SA	Indirect evidence	Delémont, SwitzerlandHQ checked Sep 20, 2026	11-50	9 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
15	LA Maison DES Énergies Suisse	Indirect evidence	Morges, SwitzerlandHQ checked Sep 20, 2026	11-50	9 contacts →
	Indirect evidence “La Maison des Énergies, Société Anonyme Suisse, filiale du groupe Européen leader en énergies renouvelables, met toute son expérience et son savoir-faire au service du marché…” Source: RevenueBase Database · checked Sep 20, 2026
16	Effin'art Sàrl	Indirect evidence	Biel, SwitzerlandHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “Effin'Art Sàrl est active dans le domaine de l'énergétique des bâtiments et l'architecture durable.” Source: RevenueBase Database · checked Sep 20, 2026
17	Allsol Gmbh	Partial evidence	Reinach, SwitzerlandHQ checked Sep 20, 2026	11-50	7 contacts →
	Partial evidence “Conception, planning and realisation of- Photovoltaic systems - Solar thermal systems for water heating and backup heating- Wood pellet heating systems - Heat pumps” Source: RevenueBase Database · checked Sep 20, 2026
18	E3 HLK AG	Indirect evidence	Kriens, SwitzerlandHQ checked Sep 20, 2026	51-200	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
19	GER Geneva Earth Resources	Indirect evidence	Geneva, SwitzerlandHQ checked Sep 20, 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 20, 2026
20	Eichholzer Haustechnik	Indirect evidence	Oberwil-lieli, SwitzerlandHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “In Sachen Heizungen, Energieberatung, Sanitärinstallation sowie nachhaltiger Energie wie Phtovoltaikanlagen sind wir der richtige Ansprechpartner” Source: RevenueBase Database · checked Sep 20, 2026
21	Widmer Co. AG	Indirect evidence	Kilchberg, SwitzerlandHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “Persönliche Kundenbetreuung ist uns ein grosses Anliegen.” Source: RevenueBase Database · checked Sep 20, 2026
22	Haustechnik	Indirect evidence	Staas, SwitzerlandHQ checked Sep 20, 2026	11-50	6 contacts →
	Indirect evidence “Wir sind ein dynamisches Unternehmen, das sich auf die Bereitstellung erstklassiger Haustechniklösungen spezialisiert hat.” Source: RevenueBase Database · checked Sep 20, 2026
23	ECO Energie A Plus AG	Indirect evidence	Hirschthal, SwitzerlandHQ checked Sep 20, 2026	11-50	6 contacts →
	Indirect evidence “Bei uns finden Sie Lösungen für die wirkungsvolle Nutzung von erneuerbaren Energien.” Source: RevenueBase Database · checked Sep 20, 2026
24	Zerogeo Energy Gmbh	Partial evidence	Zug, SwitzerlandHQ checked Sep 20, 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 20, 2026
25	Ponzio Engineering SA	Indirect evidence	Thierrens, SwitzerlandHQ checked Sep 20, 2026	1-10	6 contacts →
	Indirect evidence “Ponzio Engineering est une entreprise familiale créée en 1970.” Source: RevenueBase Database · checked Sep 20, 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 system 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 geothermal system companies.
Partial evidence: Its own public description names part of geothermal system companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal system 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 190 geothermal system companies based in Switzerland

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Geothermal system companies based in Switzerland at a glance

As of Sep 20, 2026

39.3%Verified-email coverage

3.9Average contacts per company

1-10Median size (employees)

2.1%Largest-city concentration · Geneve

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

110

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 190 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 system 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 Switzerland whose own description of what they do matches “geothermal system 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 geothermal system 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 geothermal system companies, 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, 291 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 20, 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 system 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 geothermal system companies are there based in Switzerland?

RevenueBase identified 190 geothermal system companies 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?

Heim AG Heizsysteme, headquartered in Aadorf, tops this list with the largest team on record.

Which city has the most geothermal system companies?

Geneve leads with 4 headquartered companies, followed by Zurich (4) and Altstatten (2).

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 291 verified decision-maker contacts tracked across these 190 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 20, 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.