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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,219 companies indexed · Last updated: today
DirectoryEnergy & Environment

Energy & Environment

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IndustryEnergy & Environment
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Matching companies

9'014 companies found

UCW Umwelt Controlling + Consulting Wälti Logo

UCW Umwelt Controlling + Consulting Wälti 

Rafz · Since 1991

The core activity of UCW - UMWELT CONTROLLING + CONSULTING WÄLTI is to advise and support companies and organizations on environmental protection and sustainability issues, particularly through environmental controlling and consulting.

Sustainability Sector
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Ueli Büschlen Allroundservice Logo

Ueli Büschlen Allroundservice 

Frutigen · Since 2022

Ueli Büschlen Allroundservice provides sewer and drain cleaning services, including flushing, suction and waste removal. Services also include dry-suction, small pipeline/canal inspections and surface cleaning.

Waste Management Industry
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Ueli Grossen Energieberater GmbH Logo

Ueli Grossen Energieberater GmbH 

Kandersteg · Since 2024

The core activity of the company "Ueli Grossen Energieberater GmbH" is independent energy consulting, particularly in the field of photovoltaics, with a focus on: * Consulting: Supporting customers in the sensible use of energy and optimizing their energy components * Optimization: Analyzing and improving existing energy systems and plants * Planning: Creating unbiased electrical plans, especially for sustainable PV systems In addition, the company offers services such as the creation of special electrical installations according to Art. 14 NIV and the planning of battery storage systems.

Solar & Photovoltaics
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UHCS Constructions SA Logo

UHCS Constructions SA 

Rue · Since 2020

The core activity of UHCS is the development and marketing of an internationally patented building and construction system that builds houses and buildings in a sustainable and environmentally friendly way. The company focuses on the use of environmentally friendly materials, reducing CO2 emissions and preserving water resources.

Sustainability Sector
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U-home Solar SA Logo

U-home Solar SA 

Puidoux · Since 2022

The core activities of U-Home Group include: 1. **Renewable Energy**: The production of photovoltaic modules, engineering, investments, EPC (Engineering, Procurement and Construction) and distribution of solar systems. 2. **Health and Pharma**: The distribution of medical products and wellness goods worldwide, particularly through participation in Meilleure Health International. 3. **Real Estate**: The development and management of real estate, including the hotel "Le Baron Tavernier" in Switzerland. 4. **High-Tech**: Participation in the Chinese high-tech company Xiao Mi and other companies. The company operates internationally, with a focus on China, Australia, Switzerland and other countries.

Solar & Photovoltaics
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Ukatis Sàrl Logo

Ukatis Sàrl 

Commugny · Since 2022

Ukatis Sàrl is a consulting firm that provides advisory services in management, procurement, sustainability and transformation.

Management ConsultingSustainability SectorIT Consulting & Services
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UM Consulenza tetti Sagl Logo

UM Consulenza tetti Sagl 

Ronco Sopra Ascona · Since 2016

The core activity of UM Consulenza tetti is consulting, planning, installation and sales of roofing systems and solar systems.

Solar & Photovoltaics
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Umtec Technologie AG Logo

Umtec Technologie AG 

Hombrechtikon · Since 2004

The core activity of Umtec Technologie AG encompasses the areas of environmental consulting, training and further education, as well as services in the field of sustainability and environmental technology. Specifically, the company offers: environmental consulting, including eco-efficiency analyses (SEBI analyses), life cycle assessments, environmental construction supervision and risk analyses; training and further education in the areas of heating plant operation, raw material processing, waste management facilities, sustainability in civil engineering and wood heating plants; services such as ContaMAP (measurement of lead on shooting ranges) and WASTEvision (expert conference on processing and disposal); development of training and further education programs as well as consulting services in the field of sustainability and environmental technology.

Technical Consulting & EngineeringWaste Management Industry
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UMWEKO GmbH Logo

UMWEKO GmbH 

Grenchen · Since 2005

The core activity of Umweko is consulting, inspection, training and education in the field of biomass, particularly in the areas of composting, biogas, sewage sludge and wastewater treatment plants, as well as environmental expertise and plant operation.

Sustainability Sector
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Umweltatelier GmbH Logo

Umweltatelier GmbH 

Zurich · Since 2019

The company Umweltatelier GmbH offers practical, pragmatic and creative solutions to ecological issues. The core activity of the company lies in the field of environmental consulting and planning, particularly in the development of solutions for ecological challenges.

Sustainability Sector
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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.