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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

Wunderli Management AG Logo

Wunderli Management AG 

Küsnacht Zh · Since 2004

Wunderli Management AG provides energy business consulting and implementation services for energy projects, including energy strategy development, project management, and business-case development and implementation for battery storage, PV contracting and energy optimisation. The company collaborates with a network of partners for energy contracting, heat pumps, PV systems, ZEV/vZEV setups and billing, PPA and e‑mobility infrastructure.

Management ConsultingSustainability Sector
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wupservice GmbH Logo

wupservice GmbH 

Emmenbrücke · Since 2022

The core activity of WUP Service GmbH is the procurement, sale and reuse of pallets, particularly Euro pallets, as well as providing services related to pallet logistics and recycling. This includes: the purchase and sale of new and used pallets; the acquisition of pallet stocks from companies and private customers; the execution of pallet exchange transactions; and the collection and reuse of pallets to free up storage space and create a sustainable added value for companies.

Sustainability Sector
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WVN Wärmeverbund Niederhünigen GmbH Logo

WVN Wärmeverbund Niederhünigen GmbH 

Niederhünigen · Since 2021

WVN Wärmeverbund Niederhünigen GmbH produces, distributes and sells heat energy using a combustion plant and an associated pipeline network. The company uses wood from the nearby forest as fuel.

Energy Suppliers
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W&W, Waste&Watt Sàrl Logo

W&W, Waste&Watt Sàrl 

Petit-Lancy · Since 2018

The company W&W (Waste & Watt) offers solutions for sustainable development, particularly in the areas of energy efficiency and waste management. The core activities include: energy audits and optimization for companies and municipalities, development of strategies for reducing energy consumption and waste, implementation of measures to increase energy efficiency and promote renewable energies, and consulting and support for the implementation of sustainable solutions for companies, municipalities, and private individuals. W&W's core activities focus on supporting companies and municipalities in implementing the 2050 strategy and reducing their ecological footprint.

Sustainability Sector
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WWZ Energie AG Logo

WWZ Energie AG 

Zug · Since 2001

WWZ Energie AG is a utility and service provider offering energy, telecommunications, e-mobility and drinking water services. Its offerings include electricity and gas, heating/cooling contracting, fiber Internet, TV, mobile and fixed-line services, charging solutions and water infrastructure.

Energy Suppliers
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WWZ AG Logo

WWZ AG 

Zug

WWZ AG provides services in energy, telecommunications, water and e‑mobility, including electricity, gas, heat/cooling and drinking‑water services. Its portfolio also includes internet, TV, fixed‑line and mobile services, smart metering and charging infrastructure for electric vehicles.

Energy Suppliers
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Wyder Solar GmbH Logo

Wyder Solar GmbH 

Sins · Since 2013

Wyder Solar GmbH provides consulting, planning and installation of solar projects, including photovoltaic systems and solar hot‑water installations, and integrates storage, e‑mobility and smart‑home solutions in holistic planning. The company also performs building‑envelope work such as pitched and flat roofs, facades and modernization projects, and offers monitoring via a Solarlog portal.

Solar & Photovoltaics
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Wymaro GmbH Logo

Wymaro GmbH 

Amriswil · Since 2007

The core activity of Pangas Gas & More is the marketing and distribution of gases and related products as well as services in the areas of gas supply, welding technology, barbecue equipment and camping gear.

Energy SuppliersGas Stations
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Wyna Energie AG Logo

Wyna Energie AG 

Reinach Ag · Since 2010

The company offers a wide range of services and products in the fields of energy, telecommunications, electrical installations, and building automation. The core activities include: energy consulting and services for private individuals and companies, including energy efficiency optimization and consulting; planning, installation, and maintenance of solar systems and other renewable energy sources; electrical installations and services, including building automation and rental equipment; telecommunications services, including internet, telephony, and data transmission; network services, including transformer stations, public lighting, and gas installations; and digitalization services, including cloud computing, data center housing, and VoIP solutions. The company thus offers a comprehensive range of services and products tailored to the needs of private individuals, companies, and the public sector.

Energy Suppliers
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WYSolar GmbH Logo

WYSolar GmbH 

Oberentfelden · Since 2018

The core activity of WYSolar GmbH is the planning, consulting, installation and maintenance of photovoltaic systems (solar systems) as well as the provision of storage systems for renewable energies. Additionally, the company offers services in the field of E-Mobility, including the installation of charging stations for electric vehicles.

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.