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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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9'016 companies found

Renewable Energy Exchange (REX) GmbH Logo

Renewable Energy Exchange (REX) GmbH 

Wallisellen · Since 2022

The core activity of REX GmbH is electricity distribution, particularly in cooperation with private and commercial electricity producers or industry-related partners to promote a more sustainable energy supply. Specifically, the company focuses on optimizing the yield of PV systems (photovoltaic systems) and offers services to installers and producers to increase the added value of decentralized energy generation.

Energy Suppliers
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Renewables-Now SA Logo

Renewables-Now SA 

Porrentruy · Since 2010

The core activity of Renewables-Now SA is the promotion and implementation of renewable energies as well as environmental and energy management.

Sustainability Sector
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renma AG Logo

renma AG 

Immensee · Since 2021

The company's core activity is the planning, implementation and management of photovoltaic systems, as well as consulting and implementing energy concepts for companies and property owners. This also includes financing and operating plants, creating business cases and analyzing real estate portfolios for potential for renewable energy.

Technical Consulting & EngineeringSolar & Photovoltaics
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RenoMa GmbH Logo

RenoMa GmbH 

Langnau Im Emmental · Since 1997

RenoMa GmbH provides services in roofing, façade construction, sheet‑metal work and solar energy installations. The company supports projects from consultation and execution through to maintenance and repairs, including scaffolding and roof‑plumbing tasks.

Solar & Photovoltaics
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ReoR20 AG Logo

ReoR20 AG 

Zurich · Since 2019

The core activity of REOR20 is the development and provision of artificial intelligence (AI)-based solutions for managing flood risks. Specifically, the company offers physically-based AI systems that enable precise prediction, simulation and quantification of flood risks. The solutions are tailored to the needs of insurers, governments and municipalities and aim to contribute to minimizing the impact of flood events and increasing resilience to such events.

Sustainability Sector
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Replastic Technologies AG Logo

Replastic Technologies AG 

Wollerau · Since 2021

Replastic Technologies AG provides services in the field of industrial installations on the five continents, particularly in the field of plastic recycling technologies. The company's core activity includes the development and implementation of solutions for the recycling of plastics, including the planning and construction of pilot plants.

Waste Management IndustryPlastics Industry
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Representa AG Logo

Representa AG 

Zurich · Since 1949

The core activity of Representa AG is the development and application of chemical-free treatment technologies for the recovery of water and valuable ingredients from process streams in agriculture and the textile industry. This includes in particular the treatment of biomass, the recovery of indigo and caustic soda, as well as the purification of wastewater.

Sustainability Sector
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RESDAG Ressourcen und Deponien AG Logo

RESDAG Ressourcen und Deponien AG 

St. Gallen · Since 2012

The core activity of Resdag, Ressourcen und Deponien AG, consists of planning, financing, implementing and rehabilitating landfill sites in Eastern Switzerland, particularly in the cantons of St. Gallen and Thurgau, taking into account ecological, economic and sustainable aspects.

Waste Management Industry
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Réseau Consignes Sàrl Logo

Réseau Consignes Sàrl 

Mollens Vd · Since 2019

Réseau Consignes Sàrl advises and assists producers in adopting reusable packaging. The company performs life-cycle analyses and provides guidance on packaging and label compatibility with washing, washing infrastructure, labeling and closure solutions, and logistics adapted to small and large volumes.

Sustainability Sector
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Réseau CAD Fully SA Logo

Réseau CAD Fully SA 

Fully · Since 2024

Energy Suppliers
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Réseau Transition Suisse Romande Logo

Réseau Transition Suisse Romande 

Biel/Bienne · Since 2022

The core activity of the company "Réseau Transition Suisse Romande" is to promote and support ecological and social transition in Switzerland, particularly in the Romandy region. This includes organizing events, implementing education and information programs, supporting initiatives and projects that advocate for sustainable development, as well as networking actors and stakeholders in this field.

Sustainability Sector
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re-solution.ch, Dr. Rudolf Rechsteiner Logo

re-solution.ch, Dr. Rudolf Rechsteiner 

Basel · Since 2011

The core activity of Rudolf Rechsteiner's company "re-solution.ch" is consulting and coaching on topics such as renewable energy, transformation of energy systems and sustainability.

Sustainability Sector
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reSPact Foundation Logo

reSPact Foundation 

Zurich · Since 2024

The core activity of the reSPact Foundation is to promote projects and initiatives that drive change towards greater sustainability in three main areas: 1. **Sustainable Textiles & Materials**: Promoting innovation and education to reduce environmental damage in the textile industry, particularly through the development of new materials, circular designs, and the reduction of chemicals, water consumption, and waste. 2. **Sustainable Food System**: Promoting the development of a sustainable food system that strengthens biodiversity and health, and reduces food waste, particularly through solution approaches in the areas of cultivation, processing, distribution, consumption, and circular economy. 3. **Waste Reduction, Recycling & Circular Economy**: Promoting technological and societal projects for a waste-free future, particularly through the development of durable and recyclable design, sharing economies, and closed-loop systems. The reSPact Foundation aims to promote a respectful interaction between humans and natural resources through these activities.

Sustainability Sector
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RESPONSIBALL Logo

RESPONSIBALL 

Biel/Bienne · Since 2021

The core activity of RESPONSIBALL is to support, promote and evaluate football clubs and associations in the implementation of sustainable and socially responsible practices. To this end, RESPONSIBALL collects examples of good practices, creates rankings on the environmental, social and governance performance (ESG) of football clubs, and provides support and resources for the integration of refugees and migrants into sports.

Sustainability Sector
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Resura Baustoff-Recycling AG Logo

Resura Baustoff-Recycling AG 

Surava · Since 2014

The core activity of Resura Baustoff-Recycling AG is the acceptance, sorting and recycling of mineral construction waste, as well as the provision of skips and a skip service for the disposal and transportation of construction waste.

Waste Management Industry
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reterra gmbh Logo

reterra gmbh 

Niederrohrdorf · Since 2010

The company Wurmkompost.ch primarily focuses on breeding compost worms and processing organic waste into valuable worm humus. It also offers products and accessories for composting and environmental protection, such as worm boxes, starter populations of compost worms, engraved products, and kitchen accessories. Additionally, the company provides information and guidance on proper composting and worm care.

Sustainability Sector
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REVcar SA Logo

REVcar SA 

Dorénaz · Since 2013

The core activity of REVcar SA is the revalorization of vehicles, including the purchase, dismantling and recycling of metals, as well as the sale of spare parts.

Waste Management Industry
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Revoltec GmbH Logo

Revoltec GmbH 

Zunzgen · Since 2021

The core activity of Revoltec GmbH encompasses the development and implementation of solutions for system integration, particularly in the field of renewable energies and balancing energy. This includes: * The control and marketing of battery storage systems * The implementation of Power-to-Heat solutions * The integration of industrial controllers into IT infrastructures for monitoring and data analysis * The development of software for safety-critical systems * Consulting and implementation of balancing energy projects The company focuses on developing future-proof solutions that prioritize sufficiency and efficiency, and sees Switzerland's energy future in renewable energies.

Technical Consulting & EngineeringSolar & Photovoltaics
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re-win Logo

re-win 

Basel · Since 2022

The core activity of RE-WIN is the collection, disassembly, storage, transportation and reinstallation of used windows, particularly from Switzerland, in order to reinstall them in Ukraine and thus support the reconstruction in disaster areas.

Sustainability Sector
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ReWy GmbH Logo

ReWy GmbH 

Aetingen · Since 2023

ReWy GmbH provides electrical and energy services with a focus on photovoltaics; services include PV systems, electrical installations, network and fiber-optic cabling, camera systems and general handyman work.

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.