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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,378 companies indexed · Last updated: today
DirectoryEnergy & Environment

Energy & Environment

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8'993 companies found

SOGEAG-SOGETEX SARL Logo

SOGEAG-SOGETEX SARL 

Meyrin · Since 1998

The core activity of Sogeag-Sogetex is the collection, recycling and reuse of used textiles, particularly clothing, shoes and leather goods, in the canton of Geneva, Switzerland.

Waste Management Industry
View profile4.4(7)
solar HALDIMANN GmbH Logo

solar HALDIMANN GmbH 

Buchen Be · Since 2014

solar HALDIMANN GmbH designs and installs solar and photovoltaic systems, including roof integration and work associated with roof renovations and building refurbishments.

Solar & Photovoltaics
View profile5(7)
Spiromed AG Logo

Spiromed AG 

Gelterkinden · Since 2000

The core activity of Spiromed is the disposal of medical waste, including the collection, transportation and destruction of various types of medical waste such as amalgam, batteries and accumulators, chemicals, clinical waste, medicines, pathology, mercury and X-ray. The company also provides consulting services for waste managers in medical facilities and trains users in their daily work.

Waste Management Industry
View profile4(7)
Stalder Haustechnik AG Logo

Stalder Haustechnik AG 

Oberdiessbach · Since 2016

The core activity of Stalder Haustechnik AG is the planning, installation, maintenance and repair of building technology systems, particularly in the areas of heating, plumbing, air conditioning/refrigeration, water treatment, water supply and gas. The company also offers a regular CHECK service, which includes periodic inspection and maintenance of these systems.

Solar & Photovoltaics
View profile4.9(7)
St. Gallisch-Appenzellische Kraftwerke AG Logo

St. Gallisch-Appenzellische Kraftwerke AG 

St. Gallen · Since 2009

The company's core activity encompasses the sustainable supply and networking of people and businesses with energy and data. This includes the entire value chain, from energy procurement to planning, construction, operation, and maintenance of networks and facilities, as well as financing solutions, sales, and billing. The company's business areas include in particular: electricity generation, electricity and heat supply, operation of a modern fiber optic network, internet and data connections, generation of renewable energy through hydroelectric power plants, wood-fired power plants, photovoltaic systems, and wind farms, as well as hydrogen production. The company thus offers a comprehensive range of services and products in the field of energy and data supply.

Energy SuppliersSolar & Photovoltaics
View profile3.9(7)
Stierli Solar GmbH Logo

Stierli Solar GmbH 

Aesch Lu · Since 2011

The core activity of Stierli Solar GmbH is the planning, installation and maintenance of solar energy systems, including photovoltaic systems, battery storage systems, electric vehicle charging systems and electrical services. The company offers customized services for various customers, including businesses, agriculture and single-family homes, to harness the power of the sun for a greener future.

Solar & Photovoltaics
View profile5(7)
Storama Inside AG Logo

Storama Inside AG 

Burgistein · Since 1998

Solar & Photovoltaics
View profile3.9(7)
Strebel Kanalreinigung Logo

Strebel Kanalreinigung 

Dottikon · Since 2000

The core activity of Strebel-Kanalreinigung is the cleaning and maintenance of sewage pipes, channels and other water and wastewater systems. This includes in particular: cleaning of sewage pipes (main pipes and internal pipes), new construction flushing, suction work, camera inspections of channels and pipes, cleaning of infiltration pipes, gutters and other water and wastewater systems, emptying and cleaning of sludge collectors, septic tanks, oil separators, water tanks and pump shafts. The company offers these services to private individuals, property management companies, trade, industry and municipalities.

Waste Management Industry
View profile4.6(7)
Suniva GmbH Logo

Suniva GmbH 

Ruswil · Since 2022

The core activity of Suniva is the planning and implementation of projects in the field of renewable energies, particularly in the areas of solar energy, battery storage and e-mobility, as well as the optimization of self-consumption of generated energy.

Solar & Photovoltaics
View profile5(7)
Swiss Débarras / Djeddou Logo

Swiss Débarras / Djeddou 

Lausanne · Since 2022

The core activity of Swiss Débarras is the disposal and recycling of waste, particularly in companies and offices. This includes the collection, transportation and processing of various types of waste such as paper, plastic, glass, metal and electronic waste. The company also offers additional services such as the installation of recycling containers, the destruction of archives and the cleaning of rooms.

Waste Management Industry
View profile4.9(7)
SwissFarmerPower Inwil AG Logo

SwissFarmerPower Inwil AG 

Inwil · Since 2006

The core activity of SwissFarmerPower Inwil AG is the production of energy through the processing of biomass, in particular through the generation of biogas, electricity and heat from solid and liquid biomass such as green waste and other organic materials. The company operates a future energy plant in Inwil, which processes up to 20,000 tons of solid biomass and 50,000 tons of liquid biomass per year.

Energy SuppliersWaste Management Industry
View profile4.9(7)
Technische Gemeindebetriebe Bischofszell Logo

Technische Gemeindebetriebe Bischofszell 

Bischofszell · Since 2020

Energy Suppliers
View profile3.7(7)
Delponte AG Logo

Delponte AG 

Bottmingen · Since 1988

Sustainability Sector
View profile4.4(7)
KRAMER fashion & design Logo

KRAMER fashion & design 

Gossliwil · Since 2012

The core activity of TOM KRAMER Solutions is the cultivation and sale of Paulownia trees as a sustainable solution for climate protection and CO2 compensation. The company offers businesses the opportunity to actively contribute to climate protection by purchasing Paulownia trees and simultaneously achieve their environmental goals. The services include the planting, care and certification of the trees as well as the issuance of recognized CO2 certificates.

Sustainability Sector
View profile5(7)
Trinkwasser AG Logo

Trinkwasser AG 

Sins · Since 2022

The company's core activity is the development, manufacture and marketing of water purification systems and products, particularly reverse osmosis plants, filters and other solutions for improving water quality for private, commercial and industrial applications.

Sustainability Sector
View profile4.6(7)
Wärme Bischofszell-Sittertal AG Logo

Wärme Bischofszell-Sittertal AG 

Bischofszell · Since 2022

Wärme Bischofszell-Sittertal AG develops and operates a district heating system that extracts heat from the wastewater treatment plant using a heat pump and distributes it via a district heating network. The project is implemented in cooperation with Technische Gemeindebetriebe Bischofszell and EKT AG and includes a heating plant with thermal storage and a supplementary gas boiler for peak loads.

Energy Suppliers
View profile3.7(7)
Watts Electricité SA Logo

Watts Electricité SA 

Geneva · Since 2018

The core activity of Watts Électricité SA is the installation and repair of electrical systems, including: solar panel installation, electric vehicle charging station installation, ECO21 energy-efficient lighting systems, OIBT electrical system testing and maintenance, telecommunications and internet installation, and intercom system installation. The company also offers renovation and repair services for electrical systems.

Electrical Planning & InstallationSolar & Photovoltaics
View profile3.9(7)
WEBERA Immobilien GmbH Logo

WEBERA Immobilien GmbH 

Dachsen · Since 1996

The core activity of Weber Metallbau GmbH is the planning, manufacture and installation of custom-made metal constructions for a wide range of applications, including industrial plants, architectural projects and private construction projects. This also includes the production of metal, steel, window and facade components, as well as the installation of solar systems and the manufacture of awnings and other outdoor products.

Metal ConstructionSolar & Photovoltaics
View profile4.6(7)
Wesba AG Logo

Wesba AG 

Ballwil · Since 1997

The core activity of Wesba AG is the planning, installation and maintenance of various systems in the field of building technology, particularly: thermal solar systems, photovoltaic systems, heating systems (including wood heating systems), sanitary systems, controlled residential ventilation, and rainwater harvesting. The company also provides services in the areas of consulting, planning and execution of projects in the field of renewable energy and building technology.

Solar & Photovoltaics
View profile4.6(7)
Wirth Haustechnik AG Logo

Wirth Haustechnik AG 

Oberstammheim · Since 2009

The core activity of Wirth Haustechnik AG is the planning, installation and maintenance of sanitary and heating systems, including the provision of solutions for water and heat supply, such as water softening systems, heating systems, heat pumps, pellet and wood-fired heating systems, solar systems and district heating.

Solar & Photovoltaics
View profile4.7(7)
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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.