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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,378 companies indexed · Last updated: today

DirectoryEnergy & Environment

Energy & Environment

Filters

IndustryEnergy & Environment

Search results

Matching companies

8'993 companies found

Wasserversorgung Werthenstein-Unterdorf Genossenschaft

Werthenstein · Since 1914

Wasserweg GmbH

Biel/Bienne · Since 2022

Sustainability Sector

Wasserversorgung Wilbrunnen AG

Unterägeri · Since 1964

Waste Allocation Systems SA

Orbe · Since 2016

Waste Management Industry

WASTE 2 ENERGY Sàrl

La Neuveville · Since 2023

Waste Management Industry

WastEn Swiss Sagl

Chiasso · Since 2018

Waste Management Industry

WasteWater Currency Sàrl

Nyon · Since 2019

Sustainability Sector

Watr Stiftung

Zug · Since 2021

Sustainability Sector

wattNgo Sàrl

Vionnaz · Since 2021

Sustainability Sector

WattSolar Sàrl

Lully Vd · Since 2024

Solar & Photovoltaics

Watt Smart Suisse Sàrl

Bernex · Since 2022

Sustainability Sector

WATTSUN SA

Geneva · Since 2023

Solar & Photovoltaics

Weber GmbH

Sursee · Since 2017

Solar & Photovoltaics

Weber Sonnenenergie GmbH

Bubendorf · Since 2012

Solar & Photovoltaics

Weder's one for all Werk

Kefikon Tg · Since 2022

Waste Management Industry

Gaia Energy Group SA

Lugano · Since 2023

Solar & Photovoltaics

Weidgenossenschaft Rudolfstetten

Rudolfstetten · Since 1925

Sustainability Sector

Wellinger Beratungen

Ammerswil Ag · Since 2014

Solar & Photovoltaics

We Make Solutions Technology Group GmbH

Wollerau · Since 2016

Waste Management Industry

Wermeille Emmanuel

Villiers · Since 2005

Sustainability Sector

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Frequently asked questions

Searching the directory

How the search works, what each filter means, and how the results come together.

What can I search for in the directory?

The search field matches company names, industries and places. Beyond that you can filter by Industry (18 categories based on the NOGA classification), Size (number of employees), Region (canton, language region or postal code) and Special (keywords and entry date). Filters combine freely; the active ones appear as chips below the filter bar and can be removed there individually.

How do keywords work?

Keywords search the description and stated purpose of each company — the text that goes beyond the company name. Multiple keywords are combined with OR: every additional keyword widens the set of matches rather than narrowing it.

What belongs in the postal code field?

A single postal code (e.g. 8000) or a range (e.g. 1000-1010). The field accepts postal codes only — for place names, use Canton or Language region.

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How is organisation size determined?

Size reflects the number of employees and is calculated from publicly available information by a model developed in-house. It is a best-possible estimate, not an official figure.

What does the Verified label mean?

Verified means the entry is tied to a UID (Swiss business identification number) and therefore links back to the official Swiss business register. The label speaks to the company's identity — it is not a rating of its performance.

Source: Federal Statistical Office, UID register

How do I sort the results?

Use the dropdown above the list: Relevance, Name (A–Z), Best rating, Most reviews or Longest established. You can also switch between list and map view and set how many results appear per page.