Company lists · Data refreshed September 2026

Top 25 Building decarbonization companies based in Switzerland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 432 companies tracked

RevenueBase identified 432 building decarbonization companies headquartered in Switzerland as of September 2026 and tracks 6,186 professional contacts across them, including 3,315 with verified work emails. Zurich is the largest hub.

This list covers building decarbonization 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 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

432Companies

6,186Contacts tracked

3,315Verified emails

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The 25 largest building decarbonization companies based in Switzerland

Ranked by team size

Top 25 of 432 building decarbonization companies 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 building decarbonization 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	BKW AG	Indirect evidence	Bern, SwitzerlandHQ checked Sep 16, 2026	10001+	1,148 contacts →
	Indirect evidence “The BKW Group is an internationally active energy and infrastructure company based in Berne.” Source: RevenueBase Database · checked Sep 16, 2026
2	South Pole	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 16, 2026	501-1,000	811 contacts →
	Indirect evidence “South Pole is the world's leading carbon asset developer and climate consultancy.” Source: RevenueBase Database · checked Sep 16, 2026
3	Amstein Walthert	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 16, 2026	1,001-5,000	563 contacts →
	Indirect evidence “Ü Ingenieurskunst bedeutet, mit Ressourcen richtig umzugehen.” Source: RevenueBase Database · checked Sep 16, 2026
4	Gruner	Indirect evidence	Basel, SwitzerlandHQ checked Sep 16, 2026	1,001-5,000	462 contacts →
	Indirect evidence “Gruner at a glance Founded: 1862 in Basel, Switzerland Legal form: Since 1970, public limited company owned by the founding families and employees Employees: more than 1,200 from…” Source: RevenueBase Database · checked Sep 16, 2026
5	Drees & Sommer Switzerland	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 16, 2026	201-500	164 contacts →
	Indirect evidence “Drees & Sommer Switzerland is a consulting company providing a single source of consultation and implementation services for the real estate, infrastructure and industrial markets.” Source: RevenueBase Database · checked Sep 16, 2026
6	GLB Genossenschaft	Indirect evidence	Langnau, SwitzerlandHQ checked Sep 16, 2026	501-1,000	142 contacts →
	Indirect evidence “GLB ist die verlässliche Partnerin für Lebensräume – Die Expertin für energieeffiziente Sanierung, Neubau, Einfamilien- oder Mehrfamilienhaus, Gewerbe- oder Industriebau…” Source: RevenueBase Database · checked Sep 16, 2026
7	Eicher Pauli	Indirect evidence	Bern, SwitzerlandHQ checked Sep 16, 2026	201-500	100 contacts →
	Indirect evidence “We are committed to convincing, practical and innovative solutions.” Source: RevenueBase Database · checked Sep 16, 2026
8	Romande Energie Services SA	Indirect evidence	Préverenges, SwitzerlandHQ checked Sep 16, 2026	501-1,000	84 contacts →
	Indirect evidence “Experts dans le domaine des services énergétiques et de la décarbonisation, les 500 collaborateurs de Romande Energie Services SA, société du Groupe Romande Energie, sont à votre…” Source: RevenueBase Database · checked Sep 16, 2026
9	Tech Building	Partial evidence	Perly - Genève, SwitzerlandHQ checked Sep 16, 2026	51-200	82 contacts →
	Partial evidence “Acteur de référence depuis plus de 25 ans à Genève, TECH BUILDING est une entreprise dont le cœur de métier repose sur la réalisation d’infrastructures énergétiques du bâtiment et…” Source: RevenueBase Database · checked Sep 16, 2026
10	RMB Engineering AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 16, 2026	51-200	62 contacts →
	Indirect evidence “Als führendes Ingenieur- und Planungsunternehmen in den Bereichen Gebäude, Energie- und Umwelttechnik realisiert die RMB Engineering AG massgeschneiderte Lösungen für…” Source: RevenueBase Database · checked Sep 16, 2026
11	Enerpeak AG	Indirect evidence	Dübendorf, SwitzerlandHQ checked Sep 16, 2026	51-200	56 contacts →
	Indirect evidence “electrical engineering + more” Source: RevenueBase Database · checked Sep 16, 2026
12	3-Plan AG	Indirect evidence	Winterthur, SwitzerlandHQ checked Sep 16, 2026	51-200	54 contacts →
	Indirect evidence “Wir sind ein kreatives Ingenieurbüro für Gebäudetechnik, Energie und Nachhaltigkeit.” Source: RevenueBase Database · checked Sep 16, 2026
13	Renera AG	Indirect evidence	Basel, SwitzerlandHQ checked Sep 16, 2026	51-200	54 contacts →
	Indirect evidence “Renera AG (formerly Energie Zukunft Schweiz AG) is a leading force on the road to a fully renewable energy world.” Source: RevenueBase Database · checked Sep 16, 2026
14	Signa-Terre SA	Indirect evidence	Genève, SwitzerlandHQ checked Sep 16, 2026	11-50	48 contacts →
	Indirect evidence “The energy transition is a priority.” Source: RevenueBase Database · checked Sep 16, 2026
15	Weinmann-Energies SA	Indirect evidence	Echallens, SwitzerlandHQ checked Sep 16, 2026	51-200	47 contacts →
	Indirect evidence “Weinmann-Energies est un bureau d’ingénieurs-conseils EPFL-SIA-SuisseIng.” Source: RevenueBase Database · checked Sep 16, 2026
16	AFC AIR Flow Consulting AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 16, 2026	51-200	46 contacts →
	Indirect evidence “AFC AG gestaltet die Zukunft des energieeffizienten, nachhaltigen und sicheren Bauens.” Source: RevenueBase Database · checked Sep 16, 2026
17	Anex Ingenieure AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 16, 2026	51-200	40 contacts →
	Indirect evidence “Anex Ingenieure ist ein Beratungs- und Planungsunternehmen für Gebäudetechnik, das ressourcenschonende Energie- und Medienkonzepte für Prozesse, Gebäude und Areale entwickelt.” Source: RevenueBase Database · checked Sep 16, 2026
18	Lemon Consult AG	Partial evidence	Zürich, SwitzerlandHQ checked Sep 16, 2026	11-50	37 contacts →
	Partial evidence “Lemon Consult is a specialized engineering and consulting office for energy efficiency, sustainability and renewable energies in the area of building and technical systems.” Source: RevenueBase Database · checked Sep 16, 2026
19	Ista Swiss AG	Indirect evidence	Oftringen, SwitzerlandHQ checked Sep 16, 2026	51-200	35 contacts →
	Indirect evidence “Die ista swiss ag ist seit 1973 eine führende Immobiliendienstleisterin in der Schweiz und spezialisiert auf intelligente Lösungen im Energie- und Ressourcenmanagement.” Source: RevenueBase Database · checked Sep 16, 2026
20	Kalt Halbeisen Ingenieurbüro AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 16, 2026	51-200	32 contacts →
	Indirect evidence “Wir sind ein erfolgreiches Ingenieur, Planungs- und Beratungsunternehmen im Bereich der Energie- und Gebäudetechnik.” Source: RevenueBase Database · checked Sep 16, 2026
21	Evolve	Indirect evidence	Bellinzona, SwitzerlandHQ checked Sep 16, 2026	11-50	31 contacts →
	Indirect evidence “Evolve SA è una società di ingegneria svizzera con oltre 15 anni di esperienza nella progettazione tecnica, realizzazione e gestione di edifici e infrastrutture.” Source: RevenueBase Database · checked Sep 16, 2026
22	Energie-Agentur DER Wirtschaft Agence DE L Énergie Pour L Économie	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 16, 2026	51-200	31 contacts →
	Indirect evidence “Seit 2001 bieten wir unseren Teilnehmern unter der Einhaltung von Energieträger- und Produkteneutralität einen Rund-um-Service im Energie-Management mit bewährten und von Behörden…” Source: RevenueBase Database · checked Sep 16, 2026
23	Services Plus Energies SA	Indirect evidence	Bernex, SwitzerlandHQ checked Sep 16, 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 16, 2026
24	Waldhauser Hermann AG	Indirect evidence	Münchenstein, SwitzerlandHQ checked Sep 16, 2026	51-200	30 contacts →
	Indirect evidence “Haustechnik ist eine komplexe Angelegenheit und steht in direktem Zusammenhang mit Benutzerzufriedenheit, Betriebssicherheit, Erstellungs- und Betriebskosten sowie Umweltbelastung.” Source: RevenueBase Database · checked Sep 16, 2026
25	Energa SA	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 16, 2026	11-50	29 contacts →
	Indirect evidence “Situé à Yverdon-les-Bains et à Lausanne, ENERGA SA est un bureau d’ingénieurs-conseils EPFL-SIA actif sur l’ensemble de la Suisse romande.” 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: building decarbonization 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 building decarbonization companies.
Partial evidence: Its own public description names part of building decarbonization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name building decarbonization 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 432 building decarbonization companies based in Switzerland

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Building decarbonization companies based in Switzerland at a glance

As of Sep 16, 2026

53.6%Verified-email coverage

14.3Average contacts per company

1-10Median size (employees)

9.0%Largest-city concentration · Zurich

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

276

11-50

113

51-200

201-500

501-1,000

1,001-5,000

10001+

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 432 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 building decarbonization 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 “building decarbonization 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 building decarbonization 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 building decarbonization 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, 3,315 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.

Building decarbonization companies by metro

Building decarbonization companies in Zurich39

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 building decarbonization 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 building decarbonization companies are there based in Switzerland?

RevenueBase identified 432 building decarbonization 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?

BKW AG, headquartered in Bern, tops this list with the largest team on record.

Which city has the most building decarbonization companies?

Zurich leads with 39 headquartered companies, followed by Lausanne (17) and Bern (14).

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 3,315 verified decision-maker contacts tracked across these 432 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.