Company lists · Data refreshed October 2026

Top 25 Building energy efficiency consultants based in Switzerland

Name: Building energy efficiency consultants based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 238 companies tracked

RevenueBase identified 238 company matches for building energy efficiency consultants associated with Switzerland as of October 2026 and tracks 1,449 professional contacts across them, including 568 with verified work emails. Zurich is the largest hub.

This list covers company matches for building energy efficiency consultants associated with Switzerland, 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 October 9, 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 Oct 9, 2026 How this list was built

238Companies

1,449Contacts tracked

568Verified emails

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The 25 largest building energy efficiency consultants based in Switzerland

Ranked by team size

Top 25 of 238 company matches for building energy efficiency consultants based in Switzerland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	GLB Genossenschaft	Exact match	Langnau, SwitzerlandHQ recorded Oct 9, 2026	501-1,000	134 contacts →
	Exact match “GLB ist die verlässliche Partnerin für Lebensräume – Die Expertin für energieeffiziente Sanierung, Neubau, Einfamilien- oder Mehrfamilienhaus, Gewerbe- oder Industriebau…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	Weinmann-Energies SA	Exact match	Echallens, SwitzerlandHQ recorded Oct 9, 2026	51-200	50 contacts →
	Exact match “Weinmann-Energies est un bureau d’ingénieurs-conseils EPFL-SIA-SuisseIng.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	GEAK	Exact match	Basel, SwitzerlandHQ recorded Oct 9, 2026	11-50	47 contacts →
	Exact match “Der Gebäudeenergieausweis der Kantone – kurz GEAK genannt – ist das schweizweit beste Bewertungs- und Beratungsinstrument für Gebäude.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Lemon Consult AG	Exact match	Zürich, SwitzerlandHQ recorded Oct 9, 2026	11-50	39 contacts →
	Exact match “Lemon Consult is a specialized engineering and consulting office for energy efficiency, sustainability and renewable energies in the area of building and technical systems.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	Caeli Ingénierie	Exact match	Carouge, SwitzerlandHQ recorded Oct 9, 2026	11-50	35 contacts →
	Exact match “Bureau d'études CVCSE, Energie, Automatisme du bâtiment, MCR, Physique du bâtiment.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Waldhauser Hermann AG	Exact match	Münchenstein, SwitzerlandHQ recorded Oct 9, 2026	51-200	27 contacts →
	Exact match “Haustechnik ist eine komplexe Angelegenheit und steht in direktem Zusammenhang mit Benutzerzufriedenheit, Betriebssicherheit, Erstellungs- und Betriebskosten sowie Umweltbelastung.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Tecnoservice Engineering SA	Exact match	Fribourg, SwitzerlandHQ recorded Oct 9, 2026	51-200	27 contacts →
	Exact match “TECNOSERVICE ENGINEERING SA est un bureau d’études et d’ingénieurs conseils pour les installations techniques et études énergétiques liées au bâtiment et à l’industrie.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Kalt Halbeisen Ingenieurbüro AG	Exact match	Zürich, SwitzerlandHQ recorded Oct 9, 2026	51-200	26 contacts →
	Exact match “Wir sind ein erfolgreiches Ingenieur, Planungs- und Beratungsunternehmen im Bereich der Energie- und Gebäudetechnik.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	Weisskopf Partner Gmbh	Exact match	Zürich, SwitzerlandHQ recorded Oct 9, 2026	11-50	26 contacts →
	Exact match “Die Steigerung von Energieeffizienz und den Einsatz von erneuerbaren Energien verfolgen wir mit Herzblut.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	AZ Ingénieurs SA	Exact match	Lausanne 10, SwitzerlandHQ recorded Oct 9, 2026	11-50	24 contacts →
	Exact match “La marque az ingénieurs regroupe des sociétés privées réunissant des ingénieurs-conseils dans les domaines de l'énergie, de la sécurité et des installations techniques pour le…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Ecco2 Solutions AG	Exact match	Givisiez, SwitzerlandHQ recorded Oct 9, 2026	11-50	22 contacts →
	Exact match “ECCO2 Solutions AG offers innovative services for energy efficiency in buildings.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	Enastra AG	Exact match	Zurich, SwitzerlandHQ recorded Oct 9, 2026	11-50	22 contacts →
	Exact match “Das Vernetzen der Fachgebiete Strategie & Konzept, Bauherrentreuhand, Energiecontrolling und Nebenkosten ist das Fundament unserer Kernkompetenz.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	ID GO Management SA	Exact match	Morges, SwitzerlandHQ recorded Oct 9, 2026	11-50	20 contacts →
	Exact match “ID GO Management SA est une société de services, alliant des compétences uniques à la croisée de l’énergie, la physique du bâtiment et l’architecture pour mettre en œuvre la…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Energiebüro AG	Exact match	Zurich, SwitzerlandHQ recorded Oct 9, 2026	11-50	19 contacts →
	Exact match “energiebüro ist das Kompetenzzentrum für Solar- und Wasserkraft, Energieeffizienz und Gebäudesysteme.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	Ingenieurbüro IEM AG	Exact match	Thun, SwitzerlandHQ recorded Oct 9, 2026	11-50	18 contacts →
	Exact match “Wir sind ein national tätiges, anerkanntes Ingenieurbüro für Energie- und Gebäudetechnikplanungen, führend in unseren Kompetenzen und Dienstleistungen.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Adolf Krebs AG	Exact match	Thun, SwitzerlandHQ recorded Oct 9, 2026	51-200	18 contacts →
	Exact match “Aber ebenso viel mit harten Kalkulationen, Energiemanagement, mit Wissen, was zu tun ist.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	PIC Energies SA	Exact match	Geneva, SwitzerlandHQ recorded Oct 9, 2026	11-50	17 contacts →
	Exact match “Le bureau est actif dans les domaines de l’énergétique des bâtiments, du chauffage, de la ventilation, de la climatisation et du sanitaire.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Guggisberg Kurz AG	Exact match	Ostermundigen, SwitzerlandHQ recorded Oct 9, 2026	51-200	17 contacts →
	Exact match “Mit über 90 erfahrene Mitarbeitenden ist die Guggisberg Kurz AG in der Lage sowohl grosse Objekte auszuführen, als auch sehr flexibel zu agieren.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	SB Technique SA	Exact match	Geneva, SwitzerlandHQ recorded Oct 9, 2026	11-50	16 contacts →
	Exact match “SB technique est un bureau d'Ingénieur Conseil en chauffage, ventilation, climatisation et sécurité du bâtiment développant des concepts énergétiques ambitieux pour des…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	Enerplan AG	Exact match	Ostermundigen, SwitzerlandHQ recorded Oct 9, 2026	11-50	15 contacts →
	Exact match “Wir sind ein Ingenieurbüro für Haus- Energie- und Gebäudetechnik und sind seit 1981 in Bern, Solothurn, Olten und Zürich tätig.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Bms-Energietechnik AG	Exact match	Wilderswil, SwitzerlandHQ recorded Oct 9, 2026	11-50	13 contacts →
	Exact match “Ihr Kompetenz-Zentrum für Energieeffizenz!” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	W L Partner AG	Exact match	Rapperswil-jona, SwitzerlandHQ recorded Oct 9, 2026	11-50	13 contacts →
	Exact match “Als unabhängige Berater und Planer vergleichen wir für Sie die verschiedenen Systeme, Hersteller und Öko-Standards (zum Beispiel Minergie®).” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	DM Energieberatung AG	Exact match	Brugg, SwitzerlandHQ recorded Oct 9, 2026	11-50	13 contacts →
	Exact match “DM Energieberatung AG is a renewables & environment company based out of Paradiesstrasse 5, Brugg, Aargau, Switzerland.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	NBG Ingenieure AG	Exact match	Bern, SwitzerlandHQ recorded Oct 9, 2026	11-50	13 contacts →
	Exact match “Firma: Seit 1982 ist NBG Ingenieure AG eine unabhängige Aktiengesellschaft, die ihre Kunden zu allen Energie- und Technikfragen beim Bau und der Sanierung grosser Gebäude berät.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	Sorane SA	Exact match	Lausanne, SwitzerlandHQ recorded Oct 9, 2026	11-50	13 contacts →
	Exact match “SORANE SA est une société spécialisée dans la conception énergétique des bâtiments et des systèmes.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “building energy efficiency consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 238 building energy efficiency consultants based in Switzerland

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Building energy efficiency consultants based in Switzerland at a glance

As of Oct 9, 2026

39.2%Verified-email coverage

6.1Average contacts per company

1-10Median size (employees)

5.5%Largest-city concentration · Zurich

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

163

11-50

51-200

501-1,000

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 238 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 Switzerland whose business descriptions match “building energy efficiency consultants” 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 568 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 October 9, 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 “building energy efficiency consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many building energy efficiency consultants are there based in Switzerland?

RevenueBase identified 238 company matches for building energy efficiency consultants associated with Switzerland as of October 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?

GLB Genossenschaft tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most building energy efficiency consultants?

Zurich leads with 13 company records, followed by Geneva (10) and Lausanne (10).

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 568 professional contacts with verified work emails tracked across these 238 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 October 9, 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.