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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

a energie AG Logo

a energie AG 

Schüpfen · Since 2009

The core activity of the company "a energie" consists of planning, implementing, operating and maintaining district heating networks and plants, including energy production and distribution. The company also offers services such as on-call duty, technical service and plant construction.

Solar & Photovoltaics
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A.F.H. Bau GmbH Logo

A.F.H. Bau GmbH 

Zurich · Since 2021

The company provides services in the field of construction and real estate management, particularly in the areas of heat pumps, photovoltaic and storage systems. It also offers comprehensive consulting and project management from planning to implementation of construction projects.

Solar & Photovoltaics
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Ägerital Energie Genossenschaft Logo

Ägerital Energie Genossenschaft 

Oberägeri · Since 2014

The core activity of Ägerital Energie Genossenschaft is the production and sale of regional solar power from photovoltaic systems in the Ägerital and Menzingen regions. The company enables private individuals and companies to obtain 100% solar power from the region, thereby supporting climate protection.

Solar & Photovoltaics
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Alteno AG Logo

Alteno AG 

Basel · Since 1987

The core activity of Alteno AG encompasses the planning, consulting and implementation of sustainable building technology and solar energy solutions. This includes in particular: planning of heating systems (heat pumps, wood heating systems, district heating); planning of photovoltaic systems with battery storage and e-mobility; energy consulting for large consumers, gastronomy, bakeries and commerce; load management and operational optimization; residential ventilation and ventilation systems for industry and commerce; ENAW target agreements for large consumers and energy operational optimization; strategic property owner consulting and concept development; expert opinions and reports for building energy systems. The company thus offers comprehensive services in the field of sustainable energy and building technology.

Solar & Photovoltaics
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Altersol SA Logo

Altersol SA 

Bedano · Since 1991

The core activity of Altersol SA is the planning, installation and maintenance of renewable energy systems, particularly in the field of solar energy, including: Solar Photovoltaics (generation of electricity from solar energy), Solar Thermal (generation of heat from solar energy), Heat Pumps, Wood and Pellet Heating, Heating Systems and Temperature Control Systems. The company also offers services such as consulting, planning and installation of these systems.

Solar & Photovoltaics
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A.M.P. Cheminée & Solaire, Daniel de Joffrey Logo

A.M.P. Cheminée & Solaire, Daniel de Joffrey 

Montreux · Since 2003

The core activity of AMP Cheminée & Solaire is the planning, installation, maintenance and repair of heating systems, in particular: installation and maintenance of chimneys and flues, installation and maintenance of wood-burning stoves and other heating systems, maintenance and repair of oil-fired heating systems, installation and maintenance of solar panels, and cleaning and maintenance of chimneys and flues. The company also offers consulting services in the field of energy efficiency and heating systems.

Solar & Photovoltaics
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anbeda AG Logo

anbeda AG 

Zug · Since 2017

anbeda AG runs a solar blog and provides support for do-it-yourself photovoltaic system builders, offering planning assistance, material advice and guidance up to grid connection and commissioning. The website publishes project reports, step-by-step self-build guides and practical information on photovoltaic systems; anbeda AG holds an ESTI installation permit according to NIV Art. 14.

Solar & Photovoltaics
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Andreas Sprecher Haustechnik und Oelbrennerservice GmbH Logo

Andreas Sprecher Haustechnik und Oelbrennerservice GmbH 

Buchs Sg · Since 1996

The core activity of Sprecher Haustechnik encompasses the planning and execution of heating systems, sanitary installations, air conditioning, solar systems and oil burner services. They offer professional services in the areas of heating, sanitation, renewable energy and industrial installations.

Solar & Photovoltaics
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Aniterra AG Logo

Aniterra AG 

Lyssach · Since 1999

The core activity of Aniterra AG is the implementation of independent controls in the areas of agriculture and similar production systems, particularly in the cantons of Bern, Lucerne, Uri and Obwalden. The controls cover various aspects such as animal welfare, primary production, water protection, direct payments, summering, IP Suisse, QM Swiss meat, milk standards, AOP Suisse, Guarantee SwissGAP, mountain and alpine farming, High-stem Suisse and record-keeping documents.

Sustainability Sector
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Anlagenbau Freiburghaus Logo

Anlagenbau Freiburghaus 

Walliswil B. Wangen · Since 2022

The core activity of Anlagenbau Freiburghaus is the execution of general metalwork and locksmithing, including welding contracts, sheet metal processing and plant construction. The company also offers specialized services such as the manufacture of template feed units, side tables, sight protection walls and other metal constructions for various fields of application, including garden and interior construction.

Technical Consulting & EngineeringWaste Management IndustryMechanical Engineering Industry
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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.