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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

Steiner Energie AG Logo

Steiner Energie AG 

Malters · Since 1982

The company offers a wide range of services and solutions in the fields of building technology, energy efficiency and communication. The core activities include: building automation and smart home solutions, energy efficiency and control systems, maintenance and servicing of building technology, planning and consulting for building projects, communication and telecommunications, security and burglary protection, video surveillance, photovoltaics and e-mobility, as well as load and charging management for electric vehicles. Thus, the company provides a comprehensive range of services for the planning, installation, maintenance and operation of building technology and energy efficiency solutions.

Energy Suppliers
View profile4.3(11)
SyEnergy AG Logo

SyEnergy AG 

Stans · Since 2025

The core activity of SyEnergy is the planning, installation and maintenance of renewable energy systems, in particular: solar systems (photovoltaics), electromobility (charging stations and billing systems), energy management (energy flow management and optimization) and heat pumps. The company also offers consulting, planning and implementation of energy projects as well as maintenance and repair of systems.

Solar & Photovoltaics
View profile5(11)
Thalmann Haustechnik AG Logo

Thalmann Haustechnik AG 

Hitzkirch · Since 2011

The core activity of Thalmann Haustechnik AG is the planning and execution of heating, plumbing, solar and ventilation systems for new and renovation projects. This includes in particular the consulting, planning and execution of: heating systems, plumbing installations, solar systems, ventilation systems, and bathroom installations. The company thus offers comprehensive services in the field of building technology.

Solar & Photovoltaics
View profile4.6(11)
Toiture Willy Goncerut S.A. Logo

Toiture Willy Goncerut S.A. 

Gland · Since 1999

The core activity of Toiture Willy Goncerut SA is the insulation and roofing of buildings, particularly external insulation of roofs without interfering with the interior of the houses. The company also offers additional services such as renovation, solar, photovoltaic, roof windows, facades, maintenance, roofing and sheet metal work.

Solar & Photovoltaics
View profile4.5(11)
Trafigura Commodities Sàrl Logo

Trafigura Commodities Sàrl 

Geneva · Since 2020

Trafigura Commodities Sàrl is a commodities trading company that trades and supplies minerals, metals and energy products. It provides infrastructure, logistics, shipping and storage services and conducts related trading activities such as carbon trading and renewables to support commodity supply chains.

Energy Suppliers
View profile4.3(11)
Trafigura Forestry Colombia Sàrl Logo

Trafigura Forestry Colombia Sàrl 

Geneva · Since 2022

Energy Suppliers
View profile4.3(11)
Trafigura Environmental Solutions Sàrl Logo

Trafigura Environmental Solutions Sàrl 

Geneva · Since 2021

Energy Suppliers
View profile4.3(11)
A. Kathriner GmbH Logo

A. Kathriner GmbH 

Stalden (Sarnen) · Since 1996

The company provides services in the field of roofing and sheet metal work, particularly in connection with the installation and maintenance of solar systems. It focuses on sustainable solutions for connecting roofs and solar systems and offers consulting and services for planning and implementing solar projects.

Solar & Photovoltaics
View profile4.9(11)
Werner Haustechnik AG Logo

Werner Haustechnik AG 

Rheinau · Since 1994

The core activity of Werner Haustechnik AG includes the planning, execution, maintenance and renovation of sanitary and heating systems, including bathroom conversions and renovations, as well as the management of water supply.

Solar & Photovoltaics
View profile5(11)
Zwilag Zwischenlager Würenlingen AG Logo

Zwilag Zwischenlager Würenlingen AG 

Würenlingen · Since 1990

The core activity of Zwilag Zwischenlager Würenlingen AG is the operation of disposal facilities for radioactive waste, in particular the storage and conditioning of low-, medium- and high-level radioactive waste as well as spent fuel elements.

Waste Management Industry
View profile4.6(11)
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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.