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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

Koltiva AG Logo

Koltiva AG 

Feldbrunnen · Since 2017

The core activity of Koltiva is the digital transformation of agricultural businesses and the creation of sustainable and transparent supply chains. To achieve this, Koltiva offers a range of solutions, including: digital tracking and tracing of agricultural products; training and coaching for farmers and agricultural companies; development of climate-smart agricultural designs and implementations; provision of micro-insurance and responsible credit for farmers; and support for agricultural companies in implementing sustainable practices and complying with environmental and social standards. Koltiva focuses on the areas of agriculture, sustainability, and digital transformation, and offers its solutions in 66 countries.

Sustainability Sector
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Komodo AG Logo

Komodo AG 

Engelberg · Since 2020

The core activity of Alpha Cleantec AG encompasses the development and application of environmental technologies, particularly in the treatment and remediation of: industrial wastewater, sludge and wastewater treatment plants, biogas, surface cleaning, treatment of nuclear contamination in wastewater, soil remediation and treatment, vegetation control, and treatment of rail systems. The company provides solutions for the environmental industry and researches new technologies in the field of environmental engineering.

Sustainability Sector
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Kompogas Utzenstorf AG Logo

Kompogas Utzenstorf AG 

Utzenstorf · Since 2005

The core activity of Kompogas Utzenstorf AG is the utilization of biowaste, particularly kitchen and garden waste, for energy generation and compost production.

Waste Management Industry
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Kompostier-Gruppe Zollikofen Logo

Kompostier-Gruppe Zollikofen 

Zollikofen · Since 1997

Waste Management Industry
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Kompotoi AG Logo

Kompotoi AG 

Winterthur · Since 2016

Kompotoi AG rents and sells mobile and permanently installed composting toilets for events, construction sites, public spaces and private use. The wooden, chemical-free toilets are designed to be odorless and enable urine and faeces to be processed into a soil conditioner; the company also offers sales, rental services and accessories via an online shop.

Sustainability Sector
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KONTCH's E & E GmbH Logo

KONTCH's E & E GmbH 

Witterswil · Since 2018

The core activity of KONTCH's E&E is the cultivation, processing and sale of coffee. The company practices sustainable agriculture to produce high-quality coffee and also offers special coffee creations developed with biological expertise. Furthermore, the company is committed to social projects, particularly in the areas of education and social well-being of its employees and the surrounding communities.

Sustainability Sector
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Kontrolldienst KUT AG Logo

Kontrolldienst KUT AG 

Flawil · Since 2018

The core activity of Kontrolldienst KUT is the implementation of controls and audits in the field of agriculture, particularly in the areas of animal welfare, environmental protection, water protection and food safety. The company offers services such as controls, pre-audits, nutrient balances and control costs, and is accredited for the implementation of audits according to various standards such as IP Suisse, SwissGAP and QM-Schweizerfleisch.

Sustainability Sector
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Konzept E AG Logo

Konzept E AG 

Olten · Since 2023

Technical Consulting & EngineeringSolar & Photovoltaics
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Koutec S.àr.l. Logo

Koutec S.àr.l. 

Rocourt · Since 1994

Koutec S.àr.l. provides design, installation and maintenance of photovoltaic systems, together with energy-management solutions, battery storage, EV charging stations and administrative handling of permits and subsidies for residential and commercial clients.

Solar & Photovoltaics
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Kouto Alternative Building Logo

Kouto Alternative Building 

Zurich · Since 2021

The core activity of Kouto Alternative Building is consulting and implementing alternative building methods, particularly in the field of sustainable and circular construction. The company offers services such as building planning, consulting and implementation, with a focus on the use of alternative materials and techniques to reduce environmental impacts and increase sustainability.

Sustainability Sector
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KP Wärme- & Solartechnik GmbH Logo

KP Wärme- & Solartechnik GmbH 

Grenchen · Since 2023

The core activity of KP Wärme und Solartechnik GmbH is the planning, implementation and maintenance of efficient and sustainable heating technologies, including the installation of heat pump systems and the renovation of heating systems, as well as consulting and implementing solar technology solutions for private and commercial customers.

Sustainability Sector
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Kraftwerk Augand AG Logo

Kraftwerk Augand AG 

Thun · Since 2020

The core activity of Kraftwerk Augand AG is the efficient and innovative generation of energy from hydropower, particularly the production of renewable electricity through the operation of a hydroelectric power plant on the Kander River in Switzerland.

Energy Suppliers
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Kraftwerk Burentobel AG Logo

Kraftwerk Burentobel AG 

St. Gallen · Since 2007

The core activity of Kraftwerk Burentobel AG is the generation of electrical energy through the operation of two small hydroelectric power plants on the Sitter, namely the Kraftwerk Burentobel and the Kraftwerk Grafenau. The power plants utilize the water power of the Sitter to generate electricity through Kaplan turbines, which is promoted within the framework of the Swiss feed-in tariff.

Energy Suppliers
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Kraftwerke Hinterrhein AG Logo

Kraftwerke Hinterrhein AG 

Thusis · Since 1956

The core activity of Kraftwerke Hinterrhein AG (KHR) is the production of electrical energy through the operation of hydroelectric power plants.

Energy Suppliers
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Kraftwerke Zervreila AG Logo

Kraftwerke Zervreila AG 

Vals · Since 1952

The company's core activity is the production of clean and renewable energy from hydropower, particularly through the operation of power plant facilities and reservoirs, as well as the maintenance and servicing of these facilities to ensure high availability and efficiency.

Energy Suppliers
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Kraftwerk Hostetbach AG Logo

Kraftwerk Hostetbach AG 

Guttannen · Since 2014

The core activity of Kraftwerk Hostetbach AG is the generation of electrical energy through the operation of a power plant.

Energy Suppliers
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Kraftwerk Merezenbach AG Logo

Kraftwerk Merezenbach AG 

Münster Vs · Since 1957

Kraftwerk Merezenbach AG is a hydropower plant that conveys water from the Merezenbach via a pressure pipeline to its turbine. The plant has a gross head of 504 m, a single-jet vertical Pelton turbine with a total capacity of 1900 kVA, and an average annual generation of about 7.5 GWh.

Energy Suppliers
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Kraftwerk Ryburg-Schwörstadt AG Logo

Kraftwerk Ryburg-Schwörstadt AG 

Möhlin · Since 1926

The core activity of Kraftwerk Ryburg-Schwörstadt AG is the generation of energy through hydropower. The company operates a hydropower plant on the High Rhine, which with a capacity of 120 MW is the largest hydropower plant on the High Rhine.

Energy Suppliers
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Kraftwerk Schächen AG Logo

Kraftwerk Schächen AG 

Bürglen Ur · Since 2016

The Kraftwerk Schächen AG is a power supply company specializing in the generation of electricity through hydropower. It operates a power plant and is involved in energy production and distribution.

Energy Suppliers
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Kraftwerk Sernf AG Logo

Kraftwerk Sernf AG 

Schwanden Gl · Since 2007

Kraftwerk Sernf AG is a project company whose purpose is to promote the further expansion of hydropower. It implements projects to develop hydropower plants in the southern Glarus region.

Energy Suppliers
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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.