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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

Thommen Group AG Logo

Thommen Group AG 

Zug · Since 1996

The core activity of Thommen Group is recycling, particularly metal recycling. The company operates globally, with its headquarters in Switzerland, and is involved in the collection, processing and utilization of metals.

Waste Management Industry
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Thommen Services AG Logo

Thommen Services AG 

Kaiseraugst · Since 1989

Thommen Services AG operates in the recycling and waste-management sector, processing ferrous and non‑ferrous scrap, electronic waste and automotive recycling. The company provides services including full disposal solutions, logistics and containers, hazardous‑substance and asbestos remediation, and the operation of recycling yards.

Waste Management Industry
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Thorens Energies Sàrl Logo

Thorens Energies Sàrl 

Geneva · Since 2005

Thorens Energies Sàrl provides renewable energy and energy-efficiency solutions. The company designs, supplies and installs heat pumps (air/water, ground/water, water/water), photovoltaic and solar production systems, heating, HVAC and wood-boiler equipment, and offers an internal engineering office plus maintenance and after-sales services.

Solar & Photovoltaics
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thurkraftwerk ag Logo

thurkraftwerk ag 

Schönenberg An Der Thur · Since 1997

The company's core activity is the generation of electricity from hydropower, particularly through the operation of power plants on the Thur River, as well as the construction and renovation of hydropower facilities.

Energy Suppliers
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TIB Recycla SA Logo

TIB Recycla SA 

Mezzovico · Since 2014

The core activity of TIB Recycla SA is the disposal and recycling of mineral construction waste, particularly through the operation of a soil washing plant. The company offers services for the sustainable disposal of construction waste, including processing in its own facility, recycling in cement plants and disposal in authorized landfills.

Waste Management Industry
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TI-MUELLER AG Logo

TI-MUELLER AG 

Bern · Since 2006

The core activity of Gebr. Müller AG encompasses metal manufacturing, particularly sheet metal processing, as well as the production of bathrooms, solar projects, and furniture for residential apartments.

Solar & PhotovoltaicsMechanical Engineering Industry
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Riuso & recycling sagl Logo

Riuso & recycling sagl 

Losone · Since 2021

Tiriuso Sagl operates the online portal Ti Riuso, which facilitates the resale and reuse of building materials and household items. The site provides a marketplace where users can create listings, browse product categories and contact sellers directly. It also publishes sustainability information and offers a form to report demolitions for potential material recovery.

Waste Management Industry
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TISB GmbH Logo

TISB GmbH 

Lützelflüh-Goldbach · Since 2015

The core activity of TISB is the maintenance and servicing of biomass combustion systems throughout their entire lifespan. To this end, the company offers mobile workshops and specialized equipment such as welding machines, plasma cutters, and Avant loaders with various attachments to provide comprehensive support for the maintenance and repair of combustion systems.

Technical Consulting & EngineeringSpecialized Construction InstallationsSustainability Sector
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TNC Consulting AG Logo

TNC Consulting AG 

Zurich · Since 1994

TNC Consulting AG provides consultancy, planning and project support for photovoltaic systems and offers services on building energy efficiency. Activities include project development (alpine PV, agri‑PV, floating PV), PV system planning and operation, PV noise‑barrier solutions, and measurement/analysis services.

Solar & Photovoltaics
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toesStrom AG Logo

toesStrom AG 

Freienstein · Since 2000

The core activity of toesStrom AG is the production of electricity from renewable energy, particularly through the operation of a small hydroelectric power plant on the Töss river.

Energy Suppliers
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Toilet Board Coalition Logo

Toilet Board Coalition 

Geneva · Since 2016

The core activities of the companies are: 1. Kimberly-Clark: Manufacturing and distribution of consumer goods such as hygiene products, tissue products, and consumables. 2. LIXIL: Development and manufacturing of water and living products, including sanitary ceramics, faucets, and other household appliances. 3. Unilever: Manufacturing and distribution of consumer goods such as food, beverages, personal care products, household cleaning products, and ice cream. The Toilet Board Coalition is not a traditional company, but a coalition of companies that work together to improve sanitation conditions in developing countries. Its core activity is promoting sustainable sanitation solutions and supporting companies in developing products and services that improve sanitation conditions in these countries.

Sustainability Sector
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Toilets for All Logo

Toilets for All 

Geneva · Since 2019

The core activity of the company "Toilets for All" is to support and promote initiatives that improve access to safe and sustainable sanitation facilities for people in developing countries. This includes validating ideas and systems, supporting entrepreneurs and start-ups, developing solutions for scaling toilet projects, and providing resources and contacts. The company focuses particularly on supporting projects that aim to achieve the Sustainable Development Goals (SDGs) of the United Nations, specifically SDG 6.2 (access to sanitation facilities).

Sustainability Sector
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TOMO KANALREINIGUNG AG Logo

TOMO KANALREINIGUNG AG 

Wald Zh · Since 2008

The core activity of Tomo Kanalreinigung AG is the provision of services in the field of pipe and sewer cleaning, including sewer TV inspections, manhole emptying, high-pressure flushing and drain cleaning, as well as consulting and executing work in the field of drainage technology, particularly with regard to compliance with environmental protection regulations.

Waste Management Industry
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Tom Schwarz Logo

Tom Schwarz 

Koblenz · Since 2008

The core activity of Tom Schwarz company encompasses the planning, installation, and maintenance of solar systems, modern heating systems, and bathroom renovations. Specifically, the company offers solutions for: Solar energy (photovoltaics and solar thermal systems), Heating systems (heating system modernization, heat pumps, heating walls, and designer radiators), Bathroom renovation (bathroom planning and design, sanitary and heating installations). The company provides a comprehensive range of services to support customers in implementing energy-efficient and environmentally friendly solutions.

Plumbing & Building ServicesSolar & Photovoltaics
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TOPFLAND GmbH Logo

TOPFLAND GmbH 

Neerach · Since 2019

The company Topfland GmbH focuses on the development, production and distribution of naturally biodegradable products, particularly pots and containers for the cultivation and care of plants, vegetables, herbs, flowers and trees. The core activity of the company is to offer innovative and environmentally friendly solutions for gardening and landscaping, garden centers, small and large retailers, as well as companies in the gardening and landscaping industry, with the goal of reducing plastic in the environment.

Sustainability Sector
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topos Marti & Müller AG Logo

topos Marti & Müller AG 

Zurich · Since 1991

The core activity of topos Marti & Müller AG is consulting and accompanying projects in the fields of nature conservation, ecology and botany. This includes in particular: botanical basic surveys, species protection, habitat and vegetation surveys, monitoring, ecological design and maintenance of protected areas, ecological agriculture, and biodiversity monitoring. The company offers its services from planning to implementation of measures in construction projects and inventories, documents, researches and plans nature.

Sustainability Sector
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TOP-REC Stefan Leuenberger Logo

TOP-REC Stefan Leuenberger 

Urtenen-Schönbühl · Since 2014

TOP-REC Stefan Leuenberger is a waste management service provider offering clearances, commercial waste disposal, recycling and consultancy for tailored disposal concepts. Services include residential and commercial clearances, transport and container solutions, special-waste handling, and demolition/recovery works coordinated with partner companies. The company carries out on-site sorting, material recovery and provides transparent quotes following site inspections.

Waste Management Industry
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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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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.