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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
Search results

Matching companies

9'016 companies found

Muster Bedachungen AG Logo

Muster Bedachungen AG 

Lyss · Since 2018

The core activity of Muster Bedachungen AG is the provision of services in the field of roofs and facades, including: pitched roofs, facade construction, scaffolding, renovations, photovoltaics, roof windows, snow stoppers, repairs and maintenance. The company thus offers a wide range of services for the construction, renovation and maintenance of roofs and facades.

Solar & Photovoltaics
View profile5(4)
Nagra BEVA AG Logo

Nagra BEVA AG 

Wettingen · Since 2024

Nagra BEVA AG is an organisation that carries out research, planning and advisory services for the long-term geological disposal of radioactive waste, including site characterisation, safety assessments, experiments in underground rock laboratories and public information.

Waste Management Industry
View profile4.8(4)
Nagra gTL AG Logo

Nagra gTL AG 

Wettingen · Since 2024

Nagra gTL AG conducts research, planning and advisory services for the geological disposal of radioactive waste, and carries out experiments and investigations in underground rock laboratories such as Grimsel and Mont Terri.

Waste Management Industry
View profile4.8(4)
Nau Solar Systemtechnik GmbH Logo

Nau Solar Systemtechnik GmbH 

Chur · Since 2006

The core activity of NAU Solar Systemtechnik GmbH is the planning, installation and sale of environmentally friendly energy systems, in particular: photovoltaic systems, heat pumps, solar thermal systems, storage technology, fresh water technology, wood heating systems, pellet tanks, mobile heating centers and solar roofs. The company also offers services such as installation, permitting and sales of energy systems and positions itself as a partner for environmentally friendly energy use in Switzerland.

Solar & Photovoltaics
View profile4(4)
Nigg Energietechnik AG Logo

Nigg Energietechnik AG 

Herisau · Since 1998

The company provides services in the field of heating, ventilation and air conditioning.

Solar & Photovoltaics
View profile4.8(4)
NUWA Holzbau GmbH Logo

NUWA Holzbau GmbH 

Schönenberg Zh · Since 2011

The core activity of Nuwa Holzbau GmbH is the provision of services in the field of carpentry, facade construction and roofing.

Interior ConstructionTimber Construction & CarpentryRoofing
View profile3.8(4)
Oeko-Energie AG Logo

Oeko-Energie AG 

Attinghausen · Since 2012

The core activity of oeko energie ag is the planning, construction and operation of heating plants and distribution networks for the supply of heat to end consumers, with a focus on renewable energies such as wood, earth and waste heat.

Energy Suppliers
View profile4.8(4)
Ogris und Ettlin Energietechnik GmbH Logo

Ogris und Ettlin Energietechnik GmbH 

Grabs · Since 2010

The core activity of Ogris Ettlin Energietechnik GmbH is the planning, installation, maintenance and repair of heating and solar systems, as well as the execution of renovations and conversions in the field of heating and sanitation.

Solar & Photovoltaics
View profile4(4)
Olivier Grivel Sàrl Logo

Olivier Grivel Sàrl 

Bevaix · Since 2016

The core activity of Grivel Olivier Grivel Sàrl is the installation and servicing of: heating systems, plumbing systems, kitchens, and solar installations.

Solar & Photovoltaics
View profile4.5(4)
Passareco AG Logo

Passareco AG 

Biel/Bienne · Since 2004

The core activity of Passareco is the manufacture and distribution of natural grass protection systems made of wood, particularly wooden grates that enable the use of grass areas as parking and event spaces without damaging the lawn.

Sustainability Sector
View profile5(4)
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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.