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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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9'016 companies found

Naturpflege GmbH Logo

Naturpflege GmbH 

Bubendorf · Since 2015

The core activity of Naturpflege GmbH is professional landscape maintenance through the use of animals, particularly sheep, for the maintenance of green spaces, settlement areas, company premises, agricultural land, nature reserves and other habitats. This is done in a natural, environmentally friendly and quiet way to promote biodiversity and combat problem plants and neophytes.

Sustainability Sector
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Naturpflege Neumann Logo

Naturpflege Neumann 

Zwingen · Since 2022

The core activity of the company "Naturpflege Neumann" is professional landscape maintenance through controlled grazing with specially selected livestock breeds such as Valais Blacknose sheep, Valais goats and wool pigs. The goal is to preserve and promote species-rich habitats by creating structurally rich natural areas.

Sustainability Sector
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NaturRaumMensch GmbH Logo

NaturRaumMensch GmbH 

Uettligen · Since 2006

NaturRaumMensch GmbH provides environmental services, including planning and project support for forest and landscape maintenance and enhancement, specialist forestry organization and construction management, and valuations of forest and agricultural land. Its services also include environmental education and themed excursions, natural garden design with planning and execution support, and consulting and process facilitation for sustainable development.

ForestrySustainability Sector
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Natur Umwelt Wissen GmbH Logo

Natur Umwelt Wissen GmbH 

Wädenswil · Since 2014

The core activity of the company 'Natur Umwelt Wissen GmbH' is the development, dissemination and implementation of scientifically sound knowledge in the field of environmental and nature conservation communication, particularly in the areas of biodiversity, field biological expertise and wild bee research. The company offers services such as project management, communication, research and education to promote the livelihoods of wild bees and other species and to protect biodiversity.

Sustainability Sector
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Naturwerk - Verein für Mensch Natur und Arbeit Logo

Naturwerk - Verein für Mensch Natur und Arbeit 

Brugg Ag · Since 2008

The core activity of Naturwerk is the implementation of nature conservation projects, particularly in the areas of landscape maintenance, species protection and water conservation. This includes, among other things, the renaturation of habitats, the restoration of dry stone walls, the removal of scrub from moor regeneration areas and the promotion of biodiversity.

Sustainability Sector
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Naturwert gmbh Logo

Naturwert gmbh 

Zurich · Since 2021

The core activity of Naturwert GmbH is the development of concepts and solutions for nature conservation, settlement-ecological upgrading, and the promotion of biodiversity. This includes: ecological construction supervision and design suggestions, nature and species conservation, nature and landscape conservation work, garden and green space maintenance, development of biodiversity projects, and the implementation of courses and training for nature-friendly green space maintenance. The company thus offers a comprehensive range of services aimed at protecting and promoting nature and the environment.

Sustainability Sector
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Nay Elektro-Anlagen AG Logo

Nay Elektro-Anlagen AG 

Zurich · Since 2007

The core activity of Nay-Elektroanlagen AG is the planning, installation and maintenance of electrical systems, including smart home solutions. The company offers services in the areas of electrical installation, repair and maintenance, and employs trained electricians with a federal certificate of competence.

Solar & Photovoltaics
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NB Nicoli Bruno Sagl Logo

NB Nicoli Bruno Sagl 

Bodio Ti · Since 2006

The core activity of NB Nicoli Bruno Sagl is the installation and maintenance of electrical, photovoltaic and domotic systems for private customers, real estate companies, construction sites and architectural firms in the canton of Ticino, Switzerland.

Solar & Photovoltaics
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négaWatt Logo

négaWatt 

Basel · Since 2018

The company's core activity is to promote and support the energy transition and reduce energy consumption by developing strategies and concepts for a sustainable and efficient energy policy. The company is particularly committed to the areas of energy efficiency, renewable energies and climate protection, and offers consulting, research and public relations to promote an environmentally friendly and sustainable energy future.

Sustainability Sector
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NEGORECUP SA Logo

NEGORECUP SA 

Arzier-Le Muids · Since 2007

The core activity of NEGORECUP is the trade in secondary raw materials, particularly iron and non-ferrous metals, as well as their import and export. The company provides solutions for the creation of value from waste and supplies customers with specific products such as railway rails, scrap metal, stainless steel, copper, aluminum and other metals and alloys.

Sustainability Sector
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NEGRETTI IMPIANTI SANITARI E RISCALDAMENTI SAGL Logo

NEGRETTI IMPIANTI SANITARI E RISCALDAMENTI SAGL 

Bellinzona · Since 2011

The core activity of Negretti Impianti Sanitari e Riscaldamenti SAGL is the planning, execution and installation of sanitary systems and heating systems, including the supply and installation of sanitary fixtures for bathrooms, showers, kitchens and changing rooms. Furthermore, the company offers the installation of systems with alternative and conventional energies.

Solar & Photovoltaics
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NEK Umwelttechnik AG Logo

NEK Umwelttechnik AG 

St. Gallen · Since 1989

NEK Umwelttechnik AG provides engineering, planning and consultancy services for renewable energy projects. The company focuses on greenfield development of utility-scale wind energy projects and offers services in geothermal energy, building services engineering (energy concepts, HVAC, building automation) and drone-based surveying and mapping.

Waste Management Industry
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NEK Umwelttechnik AG Logo

NEK Umwelttechnik AG 

Zurich · Since 1993

NEK Umwelttechnik AG develops and implements renewable energy projects and provides project development, engineering, planning and permitting services. Its activities include wind energy project development (site selection, measurement campaigns, wind modelling, energy yield estimates, layout optimisation and permitting), geothermal feasibility and planning, building services engineering for heating, ventilation and air conditioning, and drone surveys.

Waste Management Industry
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neoom switzerland ag Logo

neoom switzerland ag 

Rotkreuz · Since 2022

neoom switzerland ag develops and supplies decentralized energy systems and related products, including photovoltaic modules, battery storage, EV charging stations and energy-management software such as BEAAM and CONNECT Ai. The company provides integrated hardware and digital services for households, businesses and energy communities.

Solar & Photovoltaics
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Neoperl Group AG Logo

Neoperl Group AG 

Reinach Bl · Since 1973

The company Neoperl develops, manufactures and distributes innovative components and solutions for water supply and distribution, particularly for industry and trade. The core activity of the company lies in the development and production of products that enable efficient and sustainable handling of drinking water, such as fittings, valves and other components for water supply.

Sustainability Sector
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Neoperl AG Logo

Neoperl AG 

Reinach Bl · Since 1989

The core activity of Neoperl is the development, manufacture and distribution of innovative solutions and products for the regulation and protection of drinking water, particularly water flow regulators and other valve components that contribute to water savings and reduction of energy consumption for hot water preparation.

Sustainability Sector
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Nereid SA Logo

Nereid SA 

Geneva · Since 2005

The core activity of Nereid is the development and implementation of innovative technologies for seawater desalination and water treatment, particularly through the use of solar energy and a unique crystallization process, to provide clean drinking water and water for agriculture while minimizing the environmental footprint.

Sustainability Sector
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NETCYCLE AG Logo

NETCYCLE AG 

Herisau · Since 2013

The core activity of Netcycle AG is investment and digital strategy development, particularly in the areas of: Artificial Intelligence (AI) and Machine Learning, Renewable Technologies, and investments in tech-driven companies. The company also provides services in the areas of Digital Marketing, Project Management, and SAP Consulting.

Sustainability Sector
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NET Nowak Energie & Technologie AG Logo

NET Nowak Energie & Technologie AG 

St. Ursen · Since 1997

The core activity of NET Nowak Energie und Technologie AG is to provide services along the entire value chain in the field of renewable energies and energy efficiency. This includes in particular: research and development, project management, consulting and expertise, financing and business models, international cooperation, information and communication. The company focuses on the areas of solar power (photovoltaics) and other renewable energies, as well as on improving energy efficiency in the built environment. It operates regionally, nationally and internationally, and places emphasis on independent, neutral and objective services.

Research & DevelopmentTechnical Consulting & EngineeringSolar & Photovoltaics
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NETRA SA Logo

NETRA SA 

Geneva · Since 2023

The core activity of Netra is the conception, construction, financing and management of renewable energy infrastructures, particularly solar installations, electric vehicle charging stations and battery storage systems. The company offers a comprehensive solution for the development, construction and management of solar installations on building roofs, including planning, installation, maintenance and management. The goal is to support companies and individuals in reducing their energy costs and improving their environmental balance.

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.