Company lists · Data refreshed September 2026

Top 25 Sustainability consulting services based in Switzerland

Name: Sustainability consulting services based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 483 companies tracked

RevenueBase identified 483 sustainability consulting services headquartered in Switzerland as of September 2026 and tracks 3,434 professional contacts across them, including 1,427 with verified work emails. Zurich is the largest hub.

This list covers sustainability consulting services 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 22, 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 22, 2026 86% judged on-target in blind review

483Companies

3,434Contacts tracked

1,427Verified emails

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The 25 largest sustainability consulting services based in Switzerland

Ranked by team size

Top 25 of 483 sustainability consulting services based in Switzerland, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability consulting services: 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	Quantis	Strong evidence	Lausanne, SwitzerlandHQ checked Sep 22, 2026	201-500	325 contacts →
	Strong evidence “Quantis, part of BCG, is a sustainability consulting firm that helps organizations translate sustainability ambition into measurable business value.” Source: RevenueBase Database · checked Sep 22, 2026
2	Helbling Business Advisors	Indirect evidence	Zürich - Düsseldorf, SwitzerlandHQ checked Sep 22, 2026	201-500	98 contacts →
	Indirect evidence “Ihr Partner für nachhaltige Zukunftsgestaltung Ihres Unternehmens.” Source: RevenueBase Database · checked Sep 22, 2026
3	Infras	Partial evidence	Zurich, SwitzerlandHQ checked Sep 22, 2026	51-200	60 contacts →
	Partial evidence “INFRAS has been doing research and consulting focused on sustainable development since 1976.” Source: RevenueBase Database · checked Sep 22, 2026
4	Horizonte-Group AG	Partial evidence	Luzern, SwitzerlandHQ checked Sep 22, 2026	51-200	58 contacts →
	Partial evidence “Management Consulting für die Energiewirtschaft Wir gestalten die Energiezukunft – mit innovativen Strategien, digitalen Lösungen und partnerschaftlicher Zusammenarbeit.” Source: RevenueBase Database · checked Sep 22, 2026
5	Student Impact	Indirect evidence	St Gallen, SwitzerlandHQ checked Sep 22, 2026	51-200	47 contacts →
	Indirect evidence “Student Impact is the student-led consultancy specializing in sustainable business at the University of St.Gallen.” Source: RevenueBase Database · checked Sep 22, 2026
6	Strategia Partners	Partial evidence	Stadtkreis 1 Altstadt, SwitzerlandHQ checked Sep 22, 2026	11-50	44 contacts →
	Partial evidence “Strategia Partners is a strategy consulting specialist which supports its clients to define & implement sustainable long-term growth strategies.” Source: RevenueBase Database · checked Sep 22, 2026
7	Ecosens AG	Indirect evidence	Wallisellen, SwitzerlandHQ checked Sep 22, 2026	51-200	40 contacts →
	Indirect evidence “Langjährige Erfahrung und Nähe zu aktuellen Entwicklungen in sämtlichen umweltrelevanten Fragestellungen machen Ecosens zum führenden Beratungsunternehmen.” Source: RevenueBase Database · checked Sep 22, 2026
8	What. AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 22, 2026	51-200	40 contacts →
	Indirect evidence “We’re here to help you grow, adapt, and innovate.” Source: RevenueBase Database · checked Sep 22, 2026
9	Lemon Consult AG	Strong evidence	Zürich, SwitzerlandHQ checked Sep 22, 2026	11-50	37 contacts →
	Strong 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 22, 2026
10	Swiss Climate	Partial evidence	Bern, SwitzerlandHQ checked Sep 22, 2026	11-50	35 contacts →
	Partial evidence “We advise companies and organisations in setting up holistic climate strategies and sustainability concepts.” Source: RevenueBase Database · checked Sep 22, 2026
11	Sustainserv	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 22, 2026	11-50	34 contacts →
	Indirect evidence “Everything we do is designed to inspire meaningful change in the world every day.” Source: RevenueBase Database · checked Sep 22, 2026
12	Ecotec Environnement SA	Indirect evidence	Geneve, SwitzerlandHQ checked Sep 22, 2026	11-50	32 contacts →
	Indirect evidence “ECOTEC Environnement SA is a renewables and environment company based out of Rue Francois-Ruchon 3, Geneve, Geneve, Switzerland.” Source: RevenueBase Database · checked Sep 22, 2026
13	Büro FÜR Bauökonomie AG	Indirect evidence	Kriens, SwitzerlandHQ checked Sep 22, 2026	11-50	26 contacts →
	Indirect evidence “Die Büro für Bauökonomie AG ist eine Tochter der Emch+Berger ImmoConsult AG und ein Unternehmen der 1953 gegründeten Emch+Berger Gruppe.” Source: RevenueBase Database · checked Sep 22, 2026
14	Enastra AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 22, 2026	11-50	25 contacts →
	Indirect evidence “Das Vernetzen der Fachgebiete Strategie & Konzept, Bauherrentreuhand, Energiecontrolling und Nebenkosten ist das Fundament unserer Kernkompetenz.” Source: RevenueBase Database · checked Sep 22, 2026
15	Weisskopf Partner Gmbh	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 22, 2026	11-50	25 contacts →
	Indirect evidence “Die Steigerung von Energieeffizienz und den Einsatz von erneuerbaren Energien verfolgen wir mit Herzblut.” Source: RevenueBase Database · checked Sep 22, 2026
16	Idee 21	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 22, 2026	11-50	25 contacts →
	Indirect evidence “IDEE21 est un bureau spécialisé dans la conception et la mise en œuvre de stratégies participatives au service du développement durable.” Source: RevenueBase Database · checked Sep 22, 2026
17	Resiq AG	Indirect evidence	Burgdorf, SwitzerlandHQ checked Sep 22, 2026	11-50	24 contacts →
	Indirect evidence “RESiQ setzt sich für den erfolgreichen Einsatz von erneuerbaren Ressourcen (RES) ein und ermöglicht durch intelligente technische Lösungen (iQ) deren effiziente und nachhaltige…” Source: RevenueBase Database · checked Sep 22, 2026
18	Vema S.A. Vema Carbon	Indirect evidence	Fribourg, SwitzerlandHQ checked Sep 22, 2026	11-50	24 contacts →
	Indirect evidence “VEMA CARBON is a practical expert in climate solutions.” Source: RevenueBase Database · checked Sep 22, 2026
19	Planconsult W B AG	Indirect evidence	Basel, SwitzerlandHQ checked Sep 22, 2026	11-50	23 contacts →
	Indirect evidence “Wir beraten Sie ganzheitlich in Ihren Bauprojekten, in Ihren betriebswirtschaftlichen Kernbereichen und bei der Optimierung Ihres Immobilienportfolios.” Source: RevenueBase Database · checked Sep 22, 2026
20	Gimelli Engineering AG	Indirect evidence	Zollikofen, SwitzerlandHQ checked Sep 22, 2026	11-50	22 contacts →
	Indirect evidence “We’re a purpose-driving and future-oriented engineering company based in the greater Berne area.” Source: RevenueBase Database · checked Sep 22, 2026
21	Anthesis Switzerland	Partial evidence	Geneva, SwitzerlandHQ checked Sep 22, 2026	51-200	21 contacts →
	Partial evidence “Anthesis is the sustainability activator.” Source: RevenueBase Database · checked Sep 22, 2026
22	Jester Advisory AG	Partial evidence	Zürich, SwitzerlandHQ checked Sep 22, 2026	11-50	21 contacts →
	Partial evidence “We are Jester Advisory, a swiss management consulting firm specializing in sustainable and comprehensive organizational transformation.” Source: RevenueBase Database · checked Sep 22, 2026
23	Carbotech AG	Indirect evidence	Basel, SwitzerlandHQ checked Sep 22, 2026	11-50	21 contacts →
	Indirect evidence “Carbotech Inc.” Source: RevenueBase Database · checked Sep 22, 2026
24	Acting Responsibly	Indirect evidence	Biel, SwitzerlandHQ checked Sep 22, 2026	1-10	20 contacts →
	Indirect evidence “Acting Responsibly AG is a Swiss-based social enterprise dedicated to helping organizations develop strategic approaches to social responsibility.” Source: RevenueBase Database · checked Sep 22, 2026
25	EA	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 22, 2026	11-50	18 contacts →
	Indirect evidence “EA - Earth Action is a mission driven research consultancy.” Source: RevenueBase Database · checked Sep 22, 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: sustainability consulting services. 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 sustainability consulting services.
Partial evidence: Its own public description names part of sustainability consulting services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability consulting services. 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 483 sustainability consulting services based in Switzerland

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Sustainability consulting services based in Switzerland at a glance

As of Sep 22, 2026

41.6%Verified-email coverage

7.1Average contacts per company

1-10Median size (employees)

14.5%Largest-city concentration · Zurich

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

398

11-50

51-200

201-500

501-1,000

1,001-5,000

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 483 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 sustainability consulting services, 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 “sustainability consulting services”. 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 sustainability consulting services), 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 sustainability consulting services, 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, 1,427 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 22, 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.

Sustainability consulting services by metro

Sustainability consulting services in Zurich70
Sustainability consulting services in Lausanne32
Sustainability consulting services in Geneva29

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 sustainability consulting services, 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 sustainability consulting services are there based in Switzerland?

RevenueBase identified 483 sustainability consulting services 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?

Quantis, headquartered in Lausanne, tops this list with the largest team on record.

Which city has the most sustainability consulting services?

Zurich leads with 70 headquartered companies, followed by Lausanne (32) and Geneva (29).

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 1,427 verified decision-maker contacts tracked across these 483 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 22, 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.