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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

N.U.P. Landschaftspflege AG Logo

N.U.P. Landschaftspflege AG 

Udligenswil · Since 2013

The core activity of N.U.P Landschaftspflege AG is landscape maintenance, including forestry, road maintenance, stump grinding, reclamation and nature conservation. The company offers all standard and special services in the "green sector" and positions itself as a partner for landscape maintenance work.

Waste Management Industry
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N.U.P Umweltpflegetechnik Immo AG Logo

N.U.P Umweltpflegetechnik Immo AG 

Cugnasco · Since 2014

N.U.P Umweltpflegetechnik GmbH provides nature and environmental maintenance services, including watercourse maintenance, conservation work, slope and hedge care, and tree maintenance. The company also offers energy-wood processing, green-waste handling, transport services and workshop/repair services.

Waste Management Industry
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N.U.P Umweltpflegetechnik Immo AG Logo

N.U.P Umweltpflegetechnik Immo AG 

Winterthur · Since 1998

N.U.P Umweltpflegetechnik GmbH provides nature and environmental maintenance services. Its offerings include water and landscape construction, tree care, slope and hedge maintenance, chemical-free weed control, watercourse maintenance, green-waste processing and energy-wood utilisation, specialist machinery work and an in-house workshop for service and repairs.

Waste Management Industry
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Nusseria GmbH Logo

Nusseria GmbH 

Mettmenstetten · Since 2021

The company's core activity is the cultivation and marketing of hazelnuts, particularly the establishment of a hazelnut culture in Switzerland. This includes the planting and maintenance of hazelnut trees, the harvesting and marketing of hazelnuts, as well as the breeding and testing of various hazelnut varieties.

Sustainability Sector
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NVTerra SA Logo

NVTerra SA 

Monthey · Since 2010

The core activity of NVTerra SA is the development, manufacture and marketing of water purification systems. The company offers various products and solutions for water purification, including the NVAqua, NVSani and NVCoag product lines, which are based on different technologies such as REDUCELF, OCEANEF, FERILEC and biofilters.

Sustainability Sector
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NXTCORPORATION AG Logo

NXTCORPORATION AG 

Zurich · Since 2006

The core activity of NXT Corporation AG is to develop, advise and invest in innovative projects and companies in the field of sustainable food production, particularly in vertical farming and aquaculture, as a consulting and investment company. The company focuses on promoting high-tech solutions, such as artificial intelligence and IoT technologies, to improve the efficiency and sustainability of food production.

Sustainability Sector
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OBAG Kanalreinigungs-AG Logo

OBAG Kanalreinigungs-AG 

Zumikon · Since 1997

The company's core activity is pipe and sewer cleaning, including related services such as sewer TV inspections, manhole cleaning, suction work, maintenance of the sewage system, tightness testing and sewer rehabilitation.

Waste Management Industry
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OCTAGONS GmbH Logo

OCTAGONS GmbH 

Zurich · Since 2023

The Octagons AG company focuses on promoting and implementing sustainable solutions and technologies, particularly in the field of circular economy. The company's core activity is to support businesses and organizations in implementing sustainable practices and reducing waste, in order to create a livable future for future generations. To this end, Octagons AG offers tailored services and solutions that are tailored to the individual needs and goals of its customers.

Sustainability Sector
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Octagram AG Logo

Octagram AG 

Baar · Since 2010

Octagram develops and offers modular solutions for security and building automation systems, with the goal of simplifying, scaling and making these systems sustainable. The company's core activity lies in the development and distribution of modular engineering platforms, such as the A1 Controller, which covers a wide range of applications in various industries, including security, building automation and environmental protection.

Sustainability Sector
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Oecogreen Container-Service AG Logo

Oecogreen Container-Service AG 

Fahrweid · Since 2020

The core activity of Oecogreen Container-Service AG is the sustainable cleaning, repair and sale of waste containers in Switzerland.

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.