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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,219 companies indexed · Last updated: today
DirectoryEnergy & Environment

Energy & Environment

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IndustryEnergy & Environment
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Matching companies

9'014 companies found

R. Rudin Haustechnik GmbH Logo

R. Rudin Haustechnik GmbH 

Grellingen · Since 2014

The company's core activity encompasses the provision of services in the field of building technology, specifically: * Roofing and sheet metal work (e.g. gutters, coverings, claddings) * Flat roof work (e.g. bituminous sealing, rubber roofs) * Sanitary work (e.g. repairs, conversions, installations) * Photovoltaic and solar systems (e.g. planning, installation, maintenance) * Lightning protection work * Roof renovations and refurbishments * Insulation work * Façade cladding The company thus offers a wide range of services in the field of building technology and building services.

Solar & Photovoltaics
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RS Haustechnik GmbH Logo

RS Haustechnik GmbH 

Sattel · Since 2011

RS Haustechnik GmbH is a building services company specializing in the installation of underfloor heating and floor insulation, and in the assembly of photovoltaic systems and solar collectors.

Sealing & InsulationPlumbing & Building ServicesSolar & Photovoltaics
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rSupply Solutions AG Logo

rSupply Solutions AG 

Rotkreuz · Since 2014

The core activity of rSupply Solutions AG is the development and production of high-quality packaging materials made from 100% recycled plastic (post-consumer recyclate). The company focuses on reusing plastic waste and transforming it into new, high-quality packaging materials that meet the quality requirements of market leaders in Europe. Through its activities, rSupply supports the implementation of a circular economy and enables companies to produce their packaging from sustainable, recycled plastics.

Waste Management IndustryPlastics Industry
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RSV United Energy AG Logo

RSV United Energy AG 

Buochs · Since 2007

The core activity of RSV UNITED ENERGY AG encompasses the development and implementation of sustainable solutions in the following areas: energy generation and storage, water supply and recycling, food production and supply, soil and environmental protection, and emission-free recycling of waste materials. The company focuses on creating long-term and sustainable solutions that are independent of short-term market fluctuations and simultaneously create jobs.

Sustainability Sector
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Rubbertec AG Logo

Rubbertec AG 

Staffelbach · Since 2002

Rubbertec AG handles disposal of end-of-life tyres, offering collection services and providing collection containers and covered skips for rubber waste. It processes the recovered rubber into fuel for the cement industry and holds ISO 9001 and ISO 14001 certifications.

Waste Management Industry
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Rucksackschule Logo

Rucksackschule 

Zurich · Since 1997

The core activity of Serendipities GmbH is the conception and implementation of educational and nature experience offers for kindergartens, schools, homeschooling families, young people and clubs/private companies, particularly in the field of nature pedagogy and sustainable development.

Sustainability Sector
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Ruedi Amrein Plus Logo

Ruedi Amrein Plus 

Ettiswil · Since 2020

Ruedi Amrein Plus sells new and used e‑bikes and provides e‑bike maintenance and repair services with pickup and delivery options; it also offers smartphone advice and courses as well as photographic services and photo courses.

Solar & Photovoltaics
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Rüegg Bedachungen AG Logo

Rüegg Bedachungen AG 

Bauma · Since 1982

Rüegg Bedachungen AG is a trades company in the building-envelope sector that performs work on pitched roofs, flat roofs and façades. Services include new construction, conversions and renovations, repairs, thermal insulation, roof windows and the installation of solar thermal and photovoltaic systems in cooperation with partners.

Solar & Photovoltaics
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Rüegg Ecotec AG Logo

Rüegg Ecotec AG 

Wila · Since 2011

The core activity of Rüegg Ecotec AG is the development, sale, consulting, planning, installation and maintenance of fine dust filters and particle separators for wood-fired heating systems, with the aim of reducing environmental pollution caused by fine dust and promoting sustainable wood energy.

Sustainability Sector
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RüMoRec GmbH Logo

RüMoRec GmbH 

Erlinsbach So · Since 2020

The core activity of RüMoRec encompasses three main areas: 1. Dismantling: Demolition and removal of existing structures, facilities or equipment. 2. Assembly: Installation and integration of new facilities, equipment or structures. 3. Recycling: Processing and reuse of materials originating from dismantling or other sources.

Site PreparationWaste Management Industry
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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.