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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,173 companies indexed · Last updated: today
DirectoryEnergy & Environment

Energy & Environment

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IndustryEnergy & Environment
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Matching companies

9'016 companies found

EWBN Elektrizitätswerk Brig-Naters AG Logo

EWBN Elektrizitätswerk Brig-Naters AG 

Gamsen · Since 1900

Energy Suppliers
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EWCT GmbH Logo

EWCT GmbH 

Siselen Be · Since 2022

The core activity of EWCT GmbH is energy consulting and the installation of photovoltaic systems, battery storage systems and smart home solutions, in order to support customers in sustainably reducing their energy costs and promoting their independence from external energy suppliers.

Solar & Photovoltaics
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EWD Elektrizitätswerk Davos AG Logo

EWD Elektrizitätswerk Davos AG 

Davos Platz · Since 2000

The core activity of EWD Elektrizitätswerk Davos AG is the generation, distribution and sale of electrical energy, as well as the provision of related services such as electrical services, heat supply, solar systems and electromobility solutions.

Energy Suppliers
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E-Werk23 GmbH Logo

E-Werk23 GmbH 

Rüti Zh · Since 2023

E-Werk23 GmbH provides consulting, design and installation of photovoltaic systems, energy storage solutions and Loxone-based home automation, and offers maintenance and support services.

Electrical Planning & InstallationSolar & Photovoltaics
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EWK Kanalservice GmbH Logo

EWK Kanalservice GmbH 

Rorschacherberg · Since 2022

The core activity of EWK GmbH is the rehabilitation and inspection of sewer systems, particularly in the areas of: sewer rehabilitation, sewer TV inspections, drain cleaning, and flushing of sewer pipes. The company offers various services to ensure smooth wastewater management in the residential sector, including the removal of blockages and deposits in the pipes, as well as the implementation of regular maintenance and upkeep work.

Waste Management Industry
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eWorks Elektro AG Logo

eWorks Elektro AG 

Murten · Since 2020

eWorks Elektro AG offers electrical services including consulting, planning and project engineering, and the execution of electrical installations for new builds, renovations, maintenance and repairs, as well as lighting and custom luminaires. The company also provides smart home/KNX systems, photovoltaic installations and telecommunication/network services.

Electrical Planning & InstallationSolar & Photovoltaics
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EW Wirth AG Logo

EW Wirth AG 

Siebnen · Since 1913

Energy Suppliers
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Exacon AG Logo

Exacon AG 

St. Gallen · Since 2023

Technical Consulting & EngineeringSustainability Sector
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Exista AG Logo

Exista AG 

Mönchaltorf · Since 1988

The core activity of Exista AG is the development, manufacture and distribution of power supplies, battery energy solutions and LED systems for various industries such as industry, medicine, household and LED lighting technology. The company also offers services such as consulting, development, production, project management, repairs and service.

Solar & Photovoltaics
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Extraus SA Logo

Extraus SA 

Muralto · Since 2018

The core activity of Extraus SA is the development and distribution of water treatment systems, particularly the product ExtraH2O, which has antibacterial and anti-scaling properties and operates on the basis of Pulsed Electric Fields (PEF) technology. The company offers solutions for various sectors, including household, industry, agriculture, viticulture and healthcare, to improve the quality of drinking water and prevent the formation of lime deposits.

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.
Per page
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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.