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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

Swiss Wood Solutions AG Logo

Swiss Wood Solutions AG 

Altdorf Ur · Since 2016

Swiss Wood Solutions is a technology and business incubator specializing in the development and support of sustainable, wood-based technologies and business models. The company's core activity is to support companies and institutions in decarbonizing products and manufacturing processes by developing and offering innovative, wood-based solutions. Specific activities include: product development and engineering, market analysis and research, business planning and development, patent protection and management, small-scale production and manufacturing, certification processes and management, and marketing of pilot products. The company focuses particularly on the development of wood-based technologies and products that can serve as a sustainable alternative to conventional materials such as tropical wood, plastic, or fossil composite materials.

Sustainability Sector
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SwissZinc AG Logo

SwissZinc AG 

Bern · Since 2016

The core activity of SwissZinc AG is the recovery of zinc from the filter ash of waste incineration plants in Switzerland. The company aims to recycle the zinc content contained in the filter ash and produce high-quality zinc from it.

Waste Management IndustryMetal Industry
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Swiwatech GmbH Logo

Swiwatech GmbH 

Dällikon · Since 2010

The core activity of Swiwatech GmbH is the development and distribution of sustainable water technologies and products, particularly in the area of water conservation and reuse, with the goal of using the resource water efficiently and in an environmentally friendly manner. The products include, among others, urinals, washbasin fittings, soap dispensers and cleaners, which are designed to reduce water consumption and protect the environment.

Sustainability Sector
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synergo Mobilität - Politik - Raum GmbH Logo

synergo Mobilität - Politik - Raum GmbH 

Zurich · Since 1988

The core activity of Synergo is the implementation of research and evaluation, consulting and support, conception and project management for public and private institutions in the fields of mobility management, transport, planning processes, participation, space and society as well as environment and energy.

Sustainability Sector
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SYNHELION AG Logo

SYNHELION AG 

Zurich · Since 2016

SYNHELION AG develops and operates technologies to produce renewable synthetic drop-in fuels from solar energy and biogenic carbon sources. Its products include sustainable aviation fuel (SAF), solar diesel and solar gasoline; the company operates an industrial-scale plant (Plant DAWN) and uses concentrated solar process heat, thermal energy storage and thermochemical reactors in its conversion process.

Solar & Photovoltaics
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Syntegra ClimateTech AG Logo

Syntegra ClimateTech AG 

Basel · Since 2008

The core activity of Syntegra Solar Intl. AG is the development and provision of innovative and sustainable solar solutions, including the planning, construction and maintenance of photovoltaic systems (PV systems) for various applications, such as rooftop systems, ground-mounted systems and floating PV systems. In addition, the company offers consulting and advisory services to companies, investors and financial institutions in the field of renewable energies, including technical due diligence reviews, project management and M&A transactions.

Solar & Photovoltaics
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System Evergreen AG Logo

System Evergreen AG 

Castagnola · Since 2005

The core activity of Evergreen is providing Engineering, Procurement & Construction (EPC) services for sustainable building and infrastructure projects, particularly in the area of Zero-Energy Buildings (ZEB), Nearly Zero-Energy Buildings (nZEB) and renewable energies, including the integration of hydrogen technologies.

Sustainability Sector
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Tabrec Recycling AG Logo

Tabrec Recycling AG 

Maienfeld · Since 1990

The core activity of TABREC Recycling AG is the mobile processing of construction materials, particularly through crushing and screening plants, with the aim of reusing and recycling materials. The company offers solutions for the processing of construction materials, including the processing of aggregate materials, concrete and other construction materials, thereby making an important contribution to environmental friendliness and sustainability in the construction industry.

Site PreparationWaste Management Industry
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TAFenergie AG Logo

TAFenergie AG 

Tafers · Since 2020

TAFenergie AG develops and operates renewable energy supply projects, notably a district heating network powered by wood‑chip boilers. The company provides connection and operational services for heat consumers and offers photovoltaic contracting with battery storage.

Energy Suppliers
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Tahirukaj GmbH Logo

Tahirukaj GmbH 

Baar · Since 2013

The core activity of Tahirukaj GmbH is the planning, installation and maintenance of building technology systems, particularly in the areas of plumbing, heating and solar energy. This includes the creation of sanitary facilities, heating systems and solar systems for private households, medium-sized businesses and large corporations. In addition, the company also offers service and repair services for defective water pipes, clogged drains, heating failures and other building technology problems.

Plumbing & Building ServicesSolar & 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.