Energy & Environment

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9'016 companies found

Vuna GmbH

Dübendorf · Since 2016

The core activity of Vuna GmbH is the development and implementation of alternative (waste)water systems, including sanitary systems, drinking water systems, urine recycling technologies and recycling fertilizers. The company offers sustainable, site-specific solutions for wastewater treatment, resource recovery and drinking water treatment, particularly for remote or special applications such as tiny houses, mountain huts or urban new-build districts. An important part of the activities is the production of Aurin, a urine fertilizer that is considered the world's first officially approved urine fertilizer.

Technical Consulting & EngineeringWaste Management Industry

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Wärmeverbund Riehen AG

Riehen · Since 2009

The core activity of Wärmeverbund Riehen AG is the decarbonized heat supply of the municipality of Riehen through the operation of a heat network, the use of geothermal energy and the provision of related services.

Energy Suppliers

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Wasserversorgungsgenossenschaft Neuenkirch

Neuenkirch · Since 1929

The core activity of Wasserversorgung Neuenkirch is to provide drinking water and fire water to the inhabitants of Neuenkirch and Sempach Station, including the maintenance and upkeep of the pipe and pipeline network, as well as advising and supporting customers with questions and problems related to water supply.

Water Supply

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W. Bissegger AG Wil

Wil Sg · Since 1984

The company provides comprehensive services in the field of heating renovation and installation, including consulting, planning and execution of work for new and renovation buildings. It specializes in the renewal of existing heating systems and the installation of climate-friendly solutions such as solar systems.

Solar & Photovoltaics

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WEBARIA AG

Immensee · Since 2010

WEBARIA AG rents and sells waste-management equipment and related components such as compaction containers, balers, shredding systems, weighing and conveyor technology, and spare parts. The company also provides maintenance and repair services, breakdown support, safety training, rental and used-equipment offerings, and develops waste-disposal concepts.

Waste Management IndustryWholesale - Machinery & Technical Equipment

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WEBER DACH AG

Zurich · Since 2003

The core activity of Weber Dach AG is the provision of services related to roofs, particularly in the areas of: roof renovation and repair, roof insulation and sealing, fall protection and installation, skylight and solar system installation, maintenance and servicing of roofs, and consulting and estimating for roof projects. The company thus offers comprehensive solutions for all types of roofing work, from new constructions to renovations and repairs.

RoofingSolar & Photovoltaics

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Weber Transporte AG

Laupen Be · Since 2013

The core activity of Weber Transporte AG is the provision of transport and disposal services, including clearances, skip rental, transport and professional disposal of waste. In addition, the company also offers advertising opportunities on its vehicles and containers.

Waste Management Industry

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Wicki Dach- und Fassadenbau AG

Flühli Lu · Since 2016

The core activity of Wicki Dach- und Fassadenbau AG encompasses the planning, execution and maintenance of roofing and façade work, including the installation of solar systems, green roofs, sheet metal work and lightning protection. The company also offers services in the areas of energy saving and façade maintenance.

Sheet Metal WorkSolar & Photovoltaics

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Wingeier Haustechnik AG

Trubschachen · Since 2001

The core activity of Wingeier Haustechnik AG encompasses sanitary technology, water supply and drinking water hygiene. Specifically, the company offers solutions for the planning, installation and maintenance of sanitary systems, water supply systems and drinking water hygiene solutions for private and public institutions. This also includes the development and manufacture of its own products, such as well chamber covers under the Aqua-Top brand.

Solar & Photovoltaics

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W. Meier AG Bilten

Bilten · Since 1969

W. Meier AG Bilten is an electrical installation company that plans, installs and maintains electrical systems. Its services include new builds and renovations, service and maintenance, building automation, lighting, telephony, multimedia and security systems, as well as photovoltaic installations; the company also sells household appliances and manages properties.

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.