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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

Bührer GmbH Elektro Telematik Logo

Bührer GmbH Elektro Telematik 

Hallau · Since 2007

The core activity of Bührer Elektro Telematik is the planning, execution and maintenance of electrical installations, lighting design and telematics systems, including photovoltaic systems, e-charging stations, building automation, lighting and household appliances. The company also offers service and maintenance work, planning and design, as well as installation and testing in these areas.

Solar & Photovoltaics
View profile5(2)
CanalK Sàrl Logo

CanalK Sàrl 

Courrendlin · Since 2010

The core activity of CanalK is to provide services in the field of sewerage, particularly: * Troubleshooting and cleaning of sewer pipes * Inspection and control of sewer pipes using cameras and detectors * Solving problems with infiltrations, water damage and unpleasant odors * Diagnosing and solving specific problems in new buildings and renovations in collaboration with other professionals such as plumbers, masons, heating technicians and carpenters. The company mainly offers its services to private households and has specialized equipment to act quickly and effectively to prevent damage from flooding, water ingress and other problems.

Waste Management Industry
View profile5(2)
carewater GmbH Logo

carewater GmbH 

Buchs Ag · Since 2019

The core activity of carewater GmbH is to advise and support public and private water suppliers, institutions such as hotels, swimming pools and nursing homes on all matters related to drinking water, including compliance with legal and technical requirements.

Water Supply
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CELINA GmbH Logo

CELINA GmbH 

Möhlin · Since 2001

The core activity of Celina GmbH encompasses services in the field of sewer cleaning and maintenance, including: sewer cleaning and suction and flushing works, sewer television and location, high-pressure and special works, as well as transportation and disposal. The company thus offers specialized services for the maintenance and cleaning of sewers and pipelines.

Waste Management Industry
View profile4.5(2)
Centre de recherche Crem Logo

Centre de recherche Crem 

Martigny · Since 1987

The core activity of Crem is to support and advise municipalities and companies in implementing a sustainable energy policy and developing solutions to the challenges of the energy transition. This includes in particular the development of tools and methods for territorial energy planning, such as the SIG tool PlanETer, as well as the implementation of research and development work in the field of energy transition and sustainable development.

Sustainability Sector
View profile2.5(2)
Ch. Bürgin Haustechnik GmbH Logo

Ch. Bürgin Haustechnik GmbH 

Aeschi B. Spiez · Since 2002

The core activity of Ch. Bürgin Haustechnik GmbH encompasses the planning, installation, and maintenance of building technology systems, particularly in the areas of: Heating systems (including renewable energy sources such as solar and wood energy), Sanitary systems (including rainwater harvesting and creative space design), Sheet metal work (including precise and accurate work on-site), and Solar systems (to utilize existing resources). The company provides consulting and planning services in these areas and works closely with customers to develop individualized solutions.

Sheet Metal WorkSolar & Photovoltaics
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ClimatePartner Switzerland AG Logo

ClimatePartner Switzerland AG 

Zurich · Since 2007

The ClimatePartner GmbH supports other companies in reducing and compensating their CO2 emissions by developing and implementing climate protection strategies, calculating CO2 footprints, financing climate protection projects, and certifying climate-friendly products and services.

Management ConsultingSustainability Sector
View profile4.5(2)
Compostière Le Péchau Sàrl Logo

Compostière Le Péchau Sàrl 

Châbles Fr · Since 2021

The core activity of the company "Le Péchau" is the composting of green waste for private households and businesses.

Waste Management Industry
View profile4.5(2)
Cowa Thermal Solutions AG Logo

Cowa Thermal Solutions AG 

Root D4 · Since 2019

The core activity of Cowa Thermal Solutions AG is the development and manufacture of innovative heat storage systems based on phase change material (PCM) technology. These storage solutions are compact, powerful, hygienic and long-lasting, enabling efficient and space-saving energy storage in heating and energy systems. The company focuses on providing sustainable solutions for the energy transition and supports the use of renewable energies in residential, commercial and industrial buildings.

Sustainability Sector
View profile5(2)
CRESYS GmbH Logo

CRESYS GmbH 

Kaiseraugst · Since 2014

The core activity of CRESYS GmbH is consulting, installation and maintenance of solar systems.

Solar & Photovoltaics
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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.