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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

AlloDéchets Sàrl Logo

AlloDéchets Sàrl 

Eclépens · Since 2024

The core activity of AlloDéchets Sàrl is the collection, treatment and disposal of special waste, particularly medical waste, in Switzerland. The company offers weekly waste collection from pharmacies, medical practices, veterinary clinics and other providers of medical services, ensuring a safe and environmentally friendly disposal of these waste materials.

Waste Management Industry
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allrounder-work GmbH Logo

allrounder-work GmbH 

Werthenstein · Since 2023

allrounder-work GmbH provides services for solar installations, including ecological cleaning using osmosis, mounting of support systems and complete systems on pitched and flat roofs and facades, and maintenance, inspection and repair work. The company also carries out preparatory works and general assembly/disassembly tasks such as carpentry, metalwork and thermal solar system work.

Solar & Photovoltaics
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Alltec Plus AG Logo

Alltec Plus AG 

Kriens · Since 2011

The core activity of Alltec Sanierungen AG is the remediation of hazardous substances, particularly the removal and disposal of asbestos, PCB, PAK and heavy metals, as well as dismantling and demolition work. The company offers services such as contaminated site remediation, building hazardous substance remediation, analysis and consulting, remediation concepts, dismantling and demolition.

Waste Management Industry
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Almaden Swiss Sàrl Logo

Almaden Swiss Sàrl 

Vuiteboeuf · Since 2018

Almaden Swiss Sàrl is a branch office of Changzhou Almaden Co., Ltd. The company manufactures anti-reflective coated glass and ultrathin physically tempered glass for photovoltaic applications and develops glass–glass solar modules and photovoltaic double-glazing for building-integrated PV.

Solar & PhotovoltaicsGlass, Ceramics, Stone & Construction Materials Industry
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Alpa Fernwärme AG Logo

Alpa Fernwärme AG 

Oberuzwil · Since 2019

The core activity of Alpa Fernwärme AG is the development, manufacture and commissioning of district heating compact stations.

Technical Consulting & EngineeringEnergy Suppliers
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Alp Energy GmbH Logo

Alp Energy GmbH 

Jona · Since 2005

The core activity of Alp Energy is the planning, consulting, installation and maintenance of solar systems, energy storage systems and electromobility solutions for private and business customers.

Solar & Photovoltaics
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Alpennordhang Custom Camper M. Huwyler Logo

Alpennordhang Custom Camper M. Huwyler 

Arth · Since 2019

The core activity of alpennordhang is the development, manufacture and marketing of caravans, particularly wooden caravans that are designed to be sustainable and environmentally friendly.

Sustainability Sector
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Alpha Edison AG Logo

Alpha Edison AG 

Aathal-Seegräben · Since 2016

Alpha Edison AG provides sustainable energy and building-services consulting, offering advisory and controlling services across the property lifecycle. Its services include energy and feasibility studies, planning and construction supervision, monitoring and optimization of existing systems, PV and heat-pump projects, heating/cooling and freecooling systems, and SIA-compliant defect remediation and acceptance testing.

Technical Consulting & EngineeringSolar & Photovoltaics
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Alphatrend AG Logo

Alphatrend AG 

Maur · Since 2020

The core activity of Alphatrend AG is the research, development, production and distribution of products in the environmental, hygiene, water and sanitary sectors.

Sustainability Sector
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Alpine Company SA Logo

Alpine Company SA 

Chiasso · Since 2021

The core activity of Alpine Company SA is the agricultural production of high-quality vegetables and legal hemp (Canapa) using sustainable and modern cultivation methods.

Sustainability Sector
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Alpiq EcoPower AG Logo

Alpiq EcoPower AG 

Olten · Since 2010

Energy Suppliers
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Alpiq EcoPower Schweiz AG Logo

Alpiq EcoPower Schweiz AG 

Olten · Since 2006

Energy Suppliers
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ALPTEQ Swiss SA Logo

ALPTEQ Swiss SA 

Grand-Lancy · Since 2023

ALPTEQ Swiss SA provides building-technical services including design, installation and maintenance of sanitary, heating, ventilation and air-conditioning systems, and offers renewable energy solutions such as solar installations. Its services also cover floor coverings, painting work, building automation and energy renovation projects.

Electrical Planning & InstallationPlumbing & Building ServicesSolar & Photovoltaics
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Alteno Solar AG Logo

Alteno Solar AG 

Basel · Since 1997

The core activity of Alteno Solar AG is the planning, construction and operation of photovoltaic systems, particularly in the field of sustainable energy production. The company offers services such as the search and inspection of suitable roof surfaces, the installation and maintenance of photovoltaic systems, as well as the execution of purchase contracts.

Solar & Photovoltaics
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Altspeiseöl Abholdienst Fischli GmbH Logo

Altspeiseöl Abholdienst Fischli GmbH 

Grellingen · Since 2022

The core activity of Altspeiseöl Abholdienst Fischli GmbH is the transportation, disposal and recycling of used cooking oil (also known as frying oil).

Waste Management Industry
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Altspeiseöl Abholdienst Martin Fischli Logo

Altspeiseöl Abholdienst Martin Fischli 

Birsfelden · Since 2007

Altspeiseöl Abholdienst Martin Fischli provides collection, transport, and proper disposal and recycling of used cooking oil. Services include supplying clean drums (60, 120, 150 and 200 litres) and leaving the pickup area clean after collection.

Waste Management Industry
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ALT Taschen GmbH Logo

ALT Taschen GmbH 

Wangen B. Olten · Since 2016

The core activity of ALT Taschen is to manufacture bags from old, previously used materials such as tarpaulins, which are then offered as employee gifts or give-aways for companies.

Sustainability Sector
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Ambio GmbH, Beratungsgemeinschaft in angewandten Umweltwissenschaften Logo

Ambio GmbH, Beratungsgemeinschaft in angewandten Umweltwissenschaften 

Zurich · Since 1997

The core activity of Ambio is consulting and implementing projects in the field of environmental sciences, particularly in the areas of water, soil, nature conservation, and forest ecology. This includes, among other things: Optimizing water and nutrient conditions in moorland and floodplain areas; Sanitation concepts for small lakes and ponds; Environmental data management and policy; Long-term monitoring concepts for environmental observation; Environmental impact assessments (EIA); Weakness analyses; Success controls of wastewater treatment projects and urban drainage; Water compatibility of industrial wastewater and special substances; Soil mapping and investigation; Geoinformation and digitization of geodata. Ambio offers these services to public and private clients and has implemented around 200 environmental projects since 1987.

Sustainability Sector
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AMBITION AG Logo

AMBITION AG 

Dettighofen · Since 1999

Sustainability SectorOnline Shops
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Amena AG Logo

Amena AG 

Zurich · Since 1988

The core activity of Amena AG is the planning and implementation of energy supply systems with a focus on renewable energies, particularly: photovoltaic systems, self-consumption solutions, power storage systems, and hybrid power plants. The company offers consulting and services in the field of energy management and positions itself as a partner for efficient and effective energy supply.

Solar & Photovoltaics
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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.