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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

Wärmeverbund Stein am Rhein AG Logo

Wärmeverbund Stein am Rhein AG 

Stein Am Rhein · Since 2025

The company's core activity is the sustainable heat supply, in particular to the old town of Stein am Rhein, through the expansion and operation of a district heating network.

Energy Suppliers
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ETAVIS Elettro-Impianti SA Logo

ETAVIS Elettro-Impianti SA 

Bellinzona · Since 2025

ETAVIS Elettro-Impianti SA provides electrical engineering, communication and building automation services, including design, installation and maintenance of electrical systems. Its offerings include inspections, energy-efficiency and solar solutions, charging infrastructure for electric mobility, project management and data-center-related services as well as on-call support.

Solar & Photovoltaics
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VoltNet GmbH Logo

VoltNet GmbH 

Arisdorf · Since 2025

The core activity of VoltNet GmbH is the planning, installation, maintenance and consulting of electrical systems and solar solutions for private customers, commerce and industry. This includes in particular: electrical installations for residential, commercial and industrial buildings; photovoltaics (PV) - consulting, planning and installation of solar systems; electromobility - installation of charging stations; building system technology; certified specialist inspection and acceptance of electrical installations; lightning protection and device testing; expertise and consulting for network analysis and electrobiology. The company thus offers comprehensive solutions for electrical engineering and solar energy.

Electrical Planning & InstallationSolar & Photovoltaics
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CH-Facility GmbH Logo

CH-Facility GmbH 

Zurich · Since 2025

CH-Facility GmbH provides cleaning and facility services, including building maintenance, construction and routine cleaning, and specialist cleaning such as solar and facade cleaning. The company also offers moving and transport services, clearances and waste disposal, and furniture assembly.

Waste Management IndustryFacility Management & CleaningMoving Companies
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Polar Solar GmbH Logo

Polar Solar GmbH 

Schlieren · Since 2025

Polar Solar GmbH provides solar contracting for owners of large roofs and sizable private customers, taking responsibility for the planning, financing, installation, and operation and maintenance of photovoltaic systems. The company leases roof space on long-term contracts, supplies the generated electricity on site, and manages lease payments and billing.

Solar & Photovoltaics
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Wirkenergie GmbH Logo

Wirkenergie GmbH 

Baden · Since 2025

Wirkenergie GmbH supports municipalities, cooperatives and companies in developing actionable climate strategies and concrete measures in the areas of energy, climate and biodiversity.

Sustainability Sector
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Arcuna AG Logo

Arcuna AG 

Cunter · Since 2025

Arcuna AG designs and implements large battery storage systems and charging infrastructure with integrated storage. Services include planning, supply, installation and operation of battery storage systems, plus consulting and project development for utilities, businesses and project companies.

Technical Consulting & EngineeringEnergy SuppliersEnergy Industry
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Sustain Ability Sàrl Logo

Sustain Ability Sàrl 

St-Sulpice Vd · Since 2025

Sustain Ability Sàrl provides strategic sustainability services for executive teams, aligning ESG compliance with business profitability, resilience and decision-making. Offerings include the Vantyx™ Sustainability & Profitability Guided Assessment, sustainability due diligence, transformation consulting and strategic storytelling/media services.

Sustainability Sector
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Solion GmbH Logo

Solion GmbH 

Derendingen · Since 2025

Solion GmbH provides planning, consulting, installation and maintenance of photovoltaic systems and solar solutions for residential and commercial customers. The company carries out site analysis, handles permits, offers system monitoring and provides assistance with funding and financing options.

Solar & Photovoltaics
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Sustainer GmbH Logo

Sustainer GmbH 

Altdorf Ur · Since 2025

Sustainer GmbH advises companies and organisations on market-oriented sustainability and climate strategies and supports their implementation. Services include analysis and initial assessment, sustainability strategy development, Sustainability as a Service (SuaS), decarbonization planning, governance and implementation measures, and sustainability reporting.

Management ConsultingSustainability 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.