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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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Matching companies

9'016 companies found

Smart Buildings AG Logo

Smart Buildings AG 

Wil Zh · Since 2023

The company's core activity is the planning, installation and maintenance of renewable energy solutions, particularly solar systems and electromobility solutions such as charging stations. The company also offers battery storage systems and focuses on promoting a sustainable future through the use of renewable energies.

Solar & Photovoltaics
View profile5(5)
SolarTec Rheintal GmbH Logo

SolarTec Rheintal GmbH 

Lienz · Since 1999

The core activity of SolarTec Rheintal GmbH is the planning, construction and distribution of photovoltaic systems, including related services such as consulting, installation, maintenance and service. The company also offers additional services such as self-consumption analyses, energy optimizations and storage solutions.

Solar & Photovoltaics
View profile5(5)
Sortiergesellschaft Soges AG Logo

Sortiergesellschaft Soges AG 

Uttigen · Since 1993

The core activity of SOGES AG is the professional and environmentally friendly disposal, sorting and recycling of construction waste. This includes, in particular, the separation, sorting and recycling of materials such as wood, mineral construction waste and construction site waste, with the aim of closing material cycles and conserving natural resources.

Waste Management Industry
View profile4.4(5)
Spathelf Haustechnik GmbH Logo

Spathelf Haustechnik GmbH 

Basel · Since 1996

The core activity of Spathelf Haustechnik GmbH encompasses the planning, installation, maintenance, and repair of building technology systems, particularly in the areas of: Sanitary (water pipes, drains, sanitary facilities), Heating (efficient and environmentally friendly heating systems), Solar systems (installation and maintenance of solar systems for hot water and heating), and Roofing work (gutters, skylights, roof renovations). The company also offers comprehensive renovation services for bathrooms and other building technology systems.

Sheet Metal WorkSolar & Photovoltaics
View profile4.2(5)
Stadelmann Energie & Haustechnik AG Logo

Stadelmann Energie & Haustechnik AG 

Escholzmatt · Since 2000

The core activity of Stadelmann Energie & Haustechnik AG is the planning, consulting and implementation of solutions for sanitary, heating, ventilation and solar systems. The company offers individual and sustainable overall solutions for private and commercial customers, covering the areas of bathroom and exhibition planning, sanitary and water installations, heating and ventilation technology as well as solar heat and power generation.

Solar & Photovoltaics
View profile4.2(5)
Stefan Zweifel AG Logo

Stefan Zweifel AG 

Buchs Sg · Since 1981

Stefan Zweifel AG is a transport services company that, on behalf of municipalities, transports regional waste and recyclables such as green waste, cardboard, paper and scrap metal for recycling or further processing. The company sells and services containers, supplies underfloor containers (UFB) from OPTIWASTE and TRASHFOX, and operates a dedicated vehicle for cleaning underfloor containers.

Waste Management Industry
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Steiner AG, Dächer - Fassaden - Spenglerei Logo

Steiner AG, Dächer - Fassaden - Spenglerei 

Kesswil · Since 2002

The core activity of Steiner AG is the provision of services in the field of building envelopes, particularly in the areas of: Roofing (new construction, renovation, maintenance of pitched and flat roofs), facade cladding, sheet metal work (frames, shutters, lightning protection, rainwater collection), roofing work (under-roof, insulation, solar systems), and facade construction and renovation. The company thus offers a comprehensive range of services for the maintenance, renovation, and new construction of building envelopes.

RoofingSheet Metal WorkSolar & Photovoltaics
View profile5(5)
StF Messerli AG Logo

StF Messerli AG 

Ins · Since 2004

The company's core activity is the provision of services in the field of building envelopes, particularly in the areas of roofs, facades and windows. The company offers fall protection, maintenance and renovation of buildings and has specialized equipment such as cranes and aerial lifts. It also deals with the installation of photovoltaic systems and offers corresponding services.

Solar & Photovoltaics
View profile4(5)
swisscleantech Logo

swisscleantech 

Zurich · Since 2008

Swisscleantech brings together climate-conscious companies and advocates for a CO2-neutral Switzerland. The company's core activity is to promote and support sustainable and climate-friendly business models, particularly in the areas of renewable energy, energy efficiency, and green logistics. Through collaboration with its member companies and sponsoring members, Swisscleantech aims to drive political and societal changes to achieve a climate-neutral Switzerland.

Sustainability Sector
View profile4.4(5)
SWISS PV AG Logo

SWISS PV AG 

Deitingen · Since 2015

The core activity of SWISS PV AG is the development, production and distribution of solar modules and related components for mounting structures. The company also offers software solutions for the configuration of solar modules and systems.

Solar & Photovoltaics
View profile4.2(5)
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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.
Per page
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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.