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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

ESS EnergieService Schweiz GmbH Logo

ESS EnergieService Schweiz GmbH 

Aarau · Since 2024

ESS EnergieService Schweiz GmbH provides tailored residential solar energy solutions, including consultation, site and consumption assessment, system planning, component supply, installation and commissioning. The company coordinates delivery and installation with Swiss specialist partners and states the use of tested components with performance warranties.

Electrical Planning & InstallationSolar & Photovoltaics
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Essere SA Logo

Essere SA 

Uster · Since 1988

Essere SA is the provider of Umweltgemeinde, a consulting service for municipal and public administrations. The service offers professional advice on environmental protection, waste management, environmental education and event concepts, including consultancy subscriptions.

Sustainability Sector
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e-sunpark swiss SA Logo

e-sunpark swiss SA 

Rances · Since 2018

The core activity of e-sunpark is the development and distribution of solutions for electromobility and renewable energies, particularly in the following areas: Solar energy: development and distribution of solar roof systems and photovoltaic systems Electromobility: development and distribution of charging stations for electric vehicles Energy efficiency: consulting and solutions for optimizing energy consumption and production The company also offers services such as consulting, planning and installation of solar energy and electromobility solutions.

Energy Suppliers
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e-swissolar AG Logo

e-swissolar AG 

Zug · Since 2006

The core activity of e-swissolar AG is the development and provision of innovative products and services for the energy industry, particularly in the field of renewable energies and decentralized energy generation. Specifically, this includes: * The development of customized technology-based infrastructures (hardware and software) for the renewable energy industry * The creation of decentralized energy networks based on blockchain technology * The development of financing solutions for utilities, cities and municipalities through the use of token economy and DeFi systems * The promotion of local energy markets and support for utilities, cities and municipalities in the energy transition.

Solar & Photovoltaics
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etb Elektroplanung GmbH Logo

etb Elektroplanung GmbH 

Amriswil · Since 2023

etb Elektroplanung GmbH provides electrical planning services, including building and area electrical design, fire-alarm and security system planning, and consultancy for photovoltaics, EV charging infrastructure and emergency power supplies. The company supports projects from feasibility studies, tender documentation and CAD execution plans through construction supervision, commissioning and integrated testing.

Technical Consulting & EngineeringElectrical Planning & InstallationSolar & Photovoltaics
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Etertub AG Logo

Etertub AG 

Bilten · Since 2003

The core activity of Etertub AG is the manufacture and supply of prefabricated structures and reservoir renovations for municipal water supply, particularly in the field of drinking water. This includes the planning, production, transportation, logistics and commissioning of containers and lining systems for water reservoirs. The company also offers on-site consulting services and individual solutions for customers.

Water SupplyMechanical Engineering Industry
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ETG Climate Solutions SA Logo

ETG Climate Solutions SA 

Nyon · Since 2023

ETG Climate Solutions SA develops and implements programs to reduce greenhouse gas emissions and promote circular-economy solutions, including carbon abatement, biomass valorization and plastic recycling. The business also supports agricultural decarbonization projects and programs for emerging farmers in sub-Saharan Africa.

Sustainability Sector
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Ethermo Sagl Logo

Ethermo Sagl 

Since 2018

The core activity of Ethermo is the provision of services in the field of heating and sanitary technology, particularly in the installation, maintenance and repair of heating systems, sanitary facilities and pools. Specific activities include: renovations and refurbishments, 24-hour repair services, installation and maintenance of heat pumps, and installation and maintenance of pools. The company thus offers a comprehensive range of services in the field of heating and sanitary technology and positions itself as a reliable partner for customers seeking a professional and efficient solution to their needs.

Plumbing & Building ServicesSolar & Photovoltaics
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ETI Umwelttechnik AG Logo

ETI Umwelttechnik AG 

Chur · Since 1982

The core activity of ETI Umwelttechnik is the remediation and disposal of environmental pollutants, particularly construction pollutants such as asbestos and PCBs (polychlorinated biphenyls), as well as the analysis and disposal of used oil and other chemicals. The company also offers services such as building checks, remediation planning, specialized construction management and indoor air quality measurements.

Waste Management Industry
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Eurasia Industries SA Logo

Eurasia Industries SA 

Geneva · Since 2006

The core activity of Eurasia Industries is the development and provision of solutions and technologies for various industries, particularly in the areas of: Environmental technology (wetland rehabilitation, water management, vertical farming), Renewable energies (biofuels, hydrogen technology), Plastics processing (PET processing, plastic-saving technologies), Biorefinery (production of synthetic aviation fuels), Advanced Materials (development of new materials), Process control and optimization. The company focuses on creating sustainable industrial ecosystems and supports the development of global value chains in the areas of industry, bioenergy, and agriculture.

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.