Company lists · Data refreshed October 2026

Top 25 Environmental consulting companies for oil and gas based in Switzerland

Name: Environmental consulting companies for oil and gas based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 93 companies tracked

RevenueBase identified 93 company matches for environmental consulting companies for oil and gas associated with Switzerland as of October 2026 and tracks 607 professional contacts across them, including 195 with verified work emails. Bern is the largest hub.

This list covers company matches for environmental consulting companies for oil and gas 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 12, 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 12, 2026 How this list was built

93Companies

607Contacts tracked

195Verified emails

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The 25 largest environmental consulting companies for oil and gas based in Switzerland

Ranked by team size

Top 25 of 93 company matches for environmental consulting companies for oil and gas based in Switzerland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	SINEF	Exact match	Givisiez, SwitzerlandHQ recorded Oct 12, 2026	51-200	51 contacts →
	Exact match “SINEF SA propose des services et des conseils dans les domaines de l’eau et de l'énergie pour les collectivités ainsi que pour les particuliers.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Ecosens AG	Exact match	Wallisellen, SwitzerlandHQ recorded Oct 12, 2026	51-200	40 contacts →
	Exact match “Langjährige Erfahrung und Nähe zu aktuellen Entwicklungen in sämtlichen umweltrelevanten Fragestellungen machen Ecosens zum führenden Beratungsunternehmen.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Cement Engineering SA Cesa	Exact match	Geneve Carouge, SwitzerlandHQ recorded Oct 12, 2026	11-50	29 contacts →
	Exact match “Cement Engineering SA (CESA) Engineering is a professionals business!” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Carbotech AG	Exact match	Basel, SwitzerlandHQ recorded Oct 12, 2026	11-50	21 contacts →
	Exact match “Carbotech Inc.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Ingenias AG	Exact match	Weinfelden, SwitzerlandHQ recorded Oct 12, 2026	11-50	19 contacts →
	Exact match “Ingenias ist Ihr Umwelt-Ingenieurbüro für anspruchsvolle Aufgaben in den Bereichen Umwelt, Wasser und Geologie.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Drosera Ecologie Appliquée SA	Exact match	Sion, SwitzerlandHQ recorded Oct 12, 2026	11-50	14 contacts →
	Exact match “Fondé en 1991, le bureau d’étude Drosera Ecologie Appliquée SA met au service des collectivités publiques et des entreprises privées ses compétences dans le domaine de…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Ipso ECO AG	Exact match	Rothenburg, SwitzerlandHQ recorded Oct 12, 2026	11-50	14 contacts →
	Exact match “Wir sind ein unabhängiges Beratungsunternehmen für Umweltfragen.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Kellerhals Haefeli AG	Exact match	Bern, SwitzerlandHQ recorded Oct 12, 2026	11-50	13 contacts →
	Exact match “Willkommen!” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Geotechnisches Institut AG	Exact match	Bern, SwitzerlandHQ recorded Oct 12, 2026	11-50	13 contacts →
	Exact match “Wir sind ein unabhängiges Dienstleistungs- und Beratungsunternehmen und arbeiten für Sie in den folgenden Bereichen- Geologie und Geotechnik - Altlasten, Bauschadstoffe und…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Energestion SA	Exact match	Les Acacias, SwitzerlandHQ recorded Oct 12, 2026	11-50	12 contacts →
	Exact match “Energestion SA est un bureau d'ingénieurs conseils du bâtiment et en industrie.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Bureau D'études Impact SA	Exact match	Sion, SwitzerlandHQ recorded Oct 12, 2026	11-50	12 contacts →
	Exact match “Depuis sa création en 1986, le bureau d'études Impact SA a réalisé et coordonné de nombreux dossiers d'impact sur l'environnement.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Alluvia Gruppe	Exact match	Bern, SwitzerlandHQ recorded Oct 12, 2026	51-200	12 contacts →
	Exact match “Die Produktion von qualitativ hochstehenden Produkten steht im Zentrum unseres Wirkens.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Dionea SA	Exact match	Locarno, SwitzerlandHQ recorded Oct 12, 2026	11-50	12 contacts →
	Exact match “Consulenza ambientale \| Pianificazione \| Ingegneria forestale” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Ecoscan SA	Exact match	Chavannes, SwitzerlandHQ recorded Oct 12, 2026	11-50	10 contacts →
	Exact match “ECOSCAN SA est situé à Lausanne et est spécialisée dans les études en environnement.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Oekoskop AG	Exact match	Basel, SwitzerlandHQ recorded Oct 12, 2026	11-50	9 contacts →
	Exact match “oekoskop AG is a environmental consultancy based in Basel, Switzerland.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Toumi AG	Exact match	Biel, SwitzerlandHQ recorded Oct 12, 2026	1-10	9 contacts →
	Exact match “Die Firma toumi ag mit Hauptsitz in Biel-Bienne.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Fornat AG	Exact match	Zurich, SwitzerlandHQ recorded Oct 12, 2026	11-50	8 contacts →
	Exact match “FORNAT AG - Forschung für Naturschutz und Naturnutzung Seit über 40 Jahren bietet FORNAT Beratungen zu Fragen des Naturschutzes und der Ökologie.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Keller Lorenz AG	Exact match	Stadt Luzern, SwitzerlandHQ recorded Oct 12, 2026	11-50	7 contacts →
	Exact match “Die Keller + Lorenz AG ist ein in der Zentralschweiz seit 1971 erfolgreich etabliertes, wirtschaftlich unabhängiges Beratungsbüro.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	GER Geneva Earth Resources	Exact match	Geneva, SwitzerlandHQ recorded Oct 12, 2026	1-10	7 contacts →
	Exact match “GER Geneva Earth Resources is a consultancy company based in Geneva with more than 15 years of know-how.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Chemengineering	Exact match	Baar, SwitzerlandHQ recorded Oct 12, 2026	1-10	6 contacts →
	Exact match “CHEMENGINEERING is active mainly in the O&G industry and the steel industry, serving customers in the following fields of activities: Assistance in commercial activities, as…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Kaufmann Bader Gmbh	Exact match	Solothurn, SwitzerlandHQ recorded Oct 12, 2026	1-10	5 contacts →
	Exact match “Kaufmann + Bader is a company based out of HAUPTGASSE 48, Solothurn, Switzerland.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Eberhard & Partner AG	Exact match	Aarau, SwitzerlandHQ recorded Oct 12, 2026	1-10	5 contacts →
	Exact match “Das Team der EBERHARD & Partner AG steht Ihnen jederzeit für Fragen rund um die Nutzung von geothermischer Energie, Altlasten, ingenieurgeologischen Fragen oder Hydrogeologie zur…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	The Energy Consulting Group AG	Exact match	Zurich, SwitzerlandHQ recorded Oct 12, 2026	11-50	4 contacts →
	Exact match “Founded in ECG is a Swiss-based consulting company specialising in the energy industry.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	3e Ingénieurs Sàrl	Exact match	Geneva, SwitzerlandHQ recorded Oct 12, 2026	1-10	3 contacts →
	Exact match “3E Ingénieurs Sàrl est un bureau d’ingénieurs actif dans les domaines de l’énergie, l’eau et l’environnement.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Lapis Global Consulting	Exact match	Lenzburg, SwitzerlandHQ recorded Oct 12, 2026	1-10	3 contacts →
	Exact match “Lapis Global Consulting provides Geology, Mine Planning, Reserves Estimation/Management, Due Diligence, and Operations Improvement consulting and advisory services to the…” Recorded in the RevenueBase company graph · Oct 12, 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 “environmental consulting companies for oil and gas”. 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 93 environmental consulting companies for oil and gas based in Switzerland

See the full list, filter by size, metro and specialty, and access 195 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental consulting companies for oil and gas based in Switzerland at a glance

As of Oct 12, 2026

32.1%Verified-email coverage

6.5Average contacts per company

1-10Median size (employees)

6.5%Largest-city concentration · Bern

Oct 12, 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 93 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 “environmental consulting companies for oil and gas” 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 195 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 12, 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 “environmental consulting companies for oil and gas”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental consulting companies for oil and gas are there based in Switzerland?

RevenueBase identified 93 company matches for environmental consulting companies for oil and gas 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?

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

Which city has the most environmental consulting companies for oil and gas?

Bern leads with 6 company records, followed by Zurich (6) and Geneva (5).

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 195 professional contacts with verified work emails tracked across these 93 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 12, 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.