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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

Treegether SA Logo

Treegether SA 

Vevey · Since 2020

The core activity of Treegether is to plant and maintain cocoa trees, as well as produce and sell chocolate made from the cocoa beans harvested from these trees. The company also offers sponsorships for cocoa trees that can be purchased by individuals, companies, schools and groups.

Sustainability Sector
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Tree Global SA Logo

Tree Global SA 

Versoix · Since 2022

The core activity of Tree Global SA is the development and implementation of sustainable afforestation, reforestation and restoration projects (ARR) in various regions of the world, particularly in Africa, Asia and the Middle East. Industrial tree nurseries are established and operated to produce high-quality tree seedlings for the restoration of degraded areas. The goal is to reduce CO2 emissions, promote biodiversity and strengthen the local economy through these projects.

Sustainability Sector
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Treenaps A. Rudolf von Rohr Logo

Treenaps A. Rudolf von Rohr 

Bubendorf · Since 2019

The core activity of RVR Service AG is the production and distribution of sustainable products, particularly 'Treenaps' and 'Treerolls' made from tree fibers. At the same time, the company is committed to environmental protection through reforestation and forest conservation. For every sale, a portion of the revenue is used for tree planting, with the goal of planting one tree for every 100 washes.

Sustainability Sector
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Treetron GmbH Logo

Treetron GmbH 

Zurich · Since 2000

The core activity of Treetron GmbH involves the implementation of environmental projects, with the company specializing in the development of solutions for environmental analysis and monitoring. This includes the application of programming languages such as Julia, the conduct of statistical analyses, the creation of data visualizations, as well as the use of microcontrollers and server administration.

Sustainability Sector
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Treeze GmbH Logo

Treeze GmbH 

Uster · Since 2012

The core activity of treeze Ltd. is consulting and research in the field of Life Cycle Assessment (LCA), particularly in the areas of environmental assessment, product development, corporate management and political decision-making. The company offers services such as Life Cycle Inventory Analysis, Life Cycle Impact Assessment, Carbon Footprint, Water Footprint and Labelling. It supports customers in the application of LCA methods and also provides training and coaching.

Technical Consulting & EngineeringSustainability Sector
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Treier Obstbau AG Logo

Treier Obstbau AG 

Wölflinswil · Since 2023

Sustainability Sector
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Trenn GmbH Logo

Trenn GmbH 

Rudolfstetten · Since 2023

The core activity of Trenn GmbH is the comprehensive handling of disposal and elimination processes for production residues and waste, including transport logistics, recycling, disposal and notification for cross-border transportation of waste.

Waste Management Industry
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Tresolar AG Logo

Tresolar AG 

Baar · Since 2010

The core activity of TRE SOLAR AG is the planning, consulting, installation and maintenance of photovoltaic systems, as well as the provision of services in the field of smart building technology, particularly the integration of solar energy into buildings and the realization of individual solar projects for private and commercial customers.

Solar & Photovoltaics
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TRE Territorio Raum Espace di Alma Sartoris Logo

TRE Territorio Raum Espace di Alma Sartoris 

Bellinzona · Since 2022

The core activity of Territorio Raum Espace is to advise and support the development of territories and landscapes, particularly through: territory and landscape development, citizen participation and engagement, project and process management, and territorial analysis. The company supports municipalities and other stakeholders in shaping and developing territories and landscapes, taking into account social, economic, and ecological aspects.

Sustainability Sector
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tribu verte Sàrl Logo

tribu verte Sàrl 

Neuchâtel · Since 2018

The core activity of the company "Tribu verte Sàrl" consists of organizing and coordinating projects and activities in the field of biodiversity, particularly in collaboration with public institutions and organizations. The company provides support in planning and implementing projects aimed at promoting and protecting species diversity. This also includes organizing volunteer deployments and coordinating participants in such projects.

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.