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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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9'014 companies found

Torre Idrotecnica Sagl Logo

Torre Idrotecnica Sagl 

Biasca · Since 2004

The core activity of Torre Idrotecnica Sagl is the planning, construction and renovation of sanitary facilities and heating systems.

Solar & Photovoltaics
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Tortoise Survival Foundation Logo

Tortoise Survival Foundation 

Liestal · Since 2012

The company's core activity is the breeding and protection of endangered land turtle species through ex situ breeding programs, research and species-appropriate animal husbandry.

Sustainability Sector
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towastrom Wälti Logo

towastrom Wälti 

Niederscherli · Since 2017

The company towastrom offers a wide range of electrical installations and services, including: High-quality electrical installations for households and businesses, Repairs and maintenance of electrical systems, Customized solutions for specific customer needs, Cabling solutions for network infrastructure, Diagnosis and repair of electrical problems, Installation and maintenance of heating systems and photovoltaic systems, Energy management and storage systems. The core activity of the company is the planning, installation, maintenance and repair of electrical systems and installations for households and businesses.

Electrical Planning & InstallationSolar & PhotovoltaicsRetail - Electronic Devices
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trans-auto AG Logo

trans-auto AG 

Tafers · Since 1994

The core activity of trans-auto AG encompasses the areas of sewer cleaning and emptying, waste recycling, sludge recycling, maintenance of mobile toilets, as well as surface cleaning and sewer inspection. The company also provides services in the field of waste management and environmental protection.

Waste Management Industry
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TRANS - ECOBROYAGE Sàrl Logo

TRANS - ECOBROYAGE Sàrl 

Poliez-Le-Grand · Since 2010

TRANS - ECOBROYAGE Sàrl provides transport services (containers, bulk, pallets), mobile grinding of tree trunks and green waste, and supplies/delivers topsoil, screened soil and wood chips.

Waste Management Industry
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TRANSFORRER, R.Forrer Logo

TRANSFORRER, R.Forrer 

Oberhasli · Since 2009

The core activity of Transforrer Recycling encompasses three main areas: 1. **Metal Trading**: Purchase, reprocessing and sale of non-ferrous metals, cable residues and other high-quality raw materials. 2. **Transportation**: Execution of transports, including organization, trips and logistics, for customers with individually tailored solutions. 3. **Disposal**: Professional disposal of scrap metal, waste electronics, vehicle parts, old batteries, cardboard and bulky waste, in compliance with strict occupational health and environmental protection guidelines.

Waste Management Industry
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Transport Transformation GmbH Logo

Transport Transformation GmbH 

Zurich · Since 2011

The core activity of Transport Transformation (TT) is to advise and support investors, companies, and shipowners in implementing sustainable and environmentally friendly solutions in the maritime transport sector. TT offers a range of services, including: * Consulting on the development and implementation of Clean Shipping projects * Evaluation and selection of sustainable technologies and solutions * Support in financing and managing projects * Risk assessment and due diligence services * Consulting on compliance with regulatory requirements and standards (e.g. EU Taxonomy, SFDR Article 9) TT focuses particularly on the areas of: * Clean Shipping and maritime energy transition * Sustainable transport solutions and technologies * Financing and management of projects in the maritime sector The company supports its customers in implementing sustainable solutions to reduce environmental impact in the maritime transport sector and achieve the goals of the energy transition.

Sustainability Sector
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Travetsch AG Logo

Travetsch AG 

Othmarsingen · Since 2016

The core activity of TRAVETSCH AG encompasses two main areas: 1. **Environmental Consulting**: The company provides consulting services in the fields of sustainable mobility, environmental protection, and communication & training. 2. **Planetary Health Diet**: TRAVETSCH AG develops content and solutions in the area of sustainable and healthy nutrition, referred to as the "Planetary Health Diet". Additionally, the company also offers services in the areas of content maintenance, web design, content management, and office management.

Sustainability Sector
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TreaTech SA Logo

TreaTech SA 

Préverenges · Since 2015

The core activity of TreaTech is the development and application of an innovative technology for converting liquid and solid waste streams into methane-rich, renewable gas through hydrothermal gasification. The goal is to transform waste from an environmental burden into valuable resources, thereby contributing to the reduction of climate change and supporting the global energy transition.

Sustainability Sector
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TREECYCLE AG Logo

TREECYCLE AG 

Hünenberg · Since 2018

TREECYCLE AG offers investors a digital registered right called “TREE” recorded on the Ardor blockchain that grants participation in the proceeds of large-scale reforestation and timber sales. The company establishes and manages plantations of fast‑growing eucalyptus hybrids in Paraguay, markets the timber and allocates revenues according to its model (40% to investors, 50% reinvested, 10% for environmental and social 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.