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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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9'016 companies found

Pure Sun Energy Sàrl Logo

Pure Sun Energy Sàrl 

Montricher · Since 2024

Pure Sun Energy Sàrl provides photovoltaic solutions including system assessment, design, installation, commissioning and maintenance, and supplies battery storage, solar pergolas, heat pumps and electric vehicle charging stations.

Solar & Photovoltaics
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PVpro AG Logo

PVpro AG 

Immensee · Since 2022

PVpro AG is an independent platform that connects property owners with vetted photovoltaic installers and storage solution providers. The site analyses roof data, mediates up to three regional quotes from verified installers and enables comparison of real offers.

Solar & Photovoltaics
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P. Wolf AG Logo

P. Wolf AG 

Dällikon · Since 1995

The core activity of P. Wolf AG Electrical Systems is the planning, installation, maintenance and repair of electrical systems and installations, including: electrical installations for new and renovation projects, industrial electrical engineering and control systems, lighting technology, emergency power supply and systems, network analysis and optimization, solar energy and infrastructure installations for e-mobility, and the sale of electrical devices and appliances. The company also provides consulting and service in these areas.

Electrical Planning & InstallationSolar & Photovoltaics
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PYLETECH ENERGY HOLDING SA Logo

PYLETECH ENERGY HOLDING SA 

Nyon · Since 2011

The core activities of Pyletech encompass five main areas: 1. **Shipping**: Pyletech operates in the shipping sector, providing services and solutions for the maritime industry. 2. **Energy**: The company is active in the energy sector, focusing on reducing greenhouse gas emissions and promoting sustainable energy sources. 3. **Information Technology**: Pyletech offers IT services and solutions to support businesses in increasing efficiency and innovation. 4. **Real Estate & Logistics**: The company invests in and develops real estate projects, and provides logistics services. 5. **Social Responsibility**: Pyletech is committed to reducing greenhouse gas emissions and adhering to the principles of the Paris Climate Agreement. Overall, Pyletech is a diversified company with a broad range of activities across various industries.

Sustainability SectorHolding Companies
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Qanta Energy AG Logo

Qanta Energy AG 

Zug · Since 2012

The core activity of Qanta Energy is the production of local, carbon-free and resilient energy through the ownership and operation of renewable energy generation facilities, such as solar parks and rooftop installations. Additionally, the company also offers energy renovation and optimization services to customers to reduce their energy needs.

Solar & Photovoltaics
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Q.Sol GmbH Logo

Q.Sol GmbH 

Windlach · Since 2023

The core activity of Q.Sol GmbH is the conception, implementation and economic operation of solar systems on the roofs of properties. The company offers solar contracting and roof rental, where it takes over the financing, construction and maintenance of the solar systems and offers property owners a fixed electricity price or an annual roof rental fee.

Solar & Photovoltaics
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Quambio SA Logo

Quambio SA 

Neuchâtel · Since 2019

The core activity of Quambio is to support companies in achieving their sustainability goals, particularly through the development of strategies to reduce CO2 emissions and promote soft mobility. Quambio also offers tools and services to involve employees in the sustainability process and create a positive corporate climate.

Sustainability Sector
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Quantum Kraftwerke AG Logo

Quantum Kraftwerke AG 

Horw · Since 2013

The core activity of QKW (Quantum Kraftwerke AG) is the planning, installation and maintenance of sustainable energy supply systems, particularly solar systems, energy storage systems, consumption control systems and charging points for electromobility, specifically for property owners with multi-family properties. The company offers a comprehensive solution that ranges from consulting and planning to installation and maintenance of the systems, with the goal of enabling a sustainable and environmentally friendly energy supply.

Solar & Photovoltaics
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Quatra Switzerland AG Logo

Quatra Switzerland AG 

Cham · Since 2022

The core activity of Quatra is the collection, transportation and recycling of used edible oils and fats, particularly frying fats, from the catering and food industries.

Waste Management Industry
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Quellwasserversorgung Brunnen AG Logo

Quellwasserversorgung Brunnen AG 

Brunnen

The core activity of Quellwasserversorgung Brunnen AG is to supply households and businesses with drinking water, fire extinguishing water and service water. To this end, the company operates a network of springs, groundwater pumping stations and pipelines to provide high-quality water in sufficient quantities.

Water Supply
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Quimbaya AG Logo

Quimbaya AG 

Allschwil · Since 2021

The core activity of Quimbaya is the trade and distribution of specialty coffee and bean-to-bar chocolate, sourced directly from small farmers in Colombia. The company places a strong focus on sustainability, social responsibility, and fair trade, by negotiating prices directly with producers and exceeding the Fairtrade price. Quimbaya offers its products to both end-consumers and business customers, operating an online shop and partnerships with local companies.

Sustainability Sector
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Quintsolar AG Logo

Quintsolar AG 

Wallbach · Since 2023

Quintsolar AG provides photovoltaic solutions, offering consulting, system design, installation and maintenance for solar PV systems and battery storage. The website details technical components (modules, inverters, storage), warranty options and the project process from quotation to commissioning.

Technical Consulting & EngineeringElectrical Planning & InstallationSolar & Photovoltaics
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QUNDQPUNKT GMBH Logo

QUNDQPUNKT GMBH 

Altdorf Ur · Since 2011

QUNDQPUNKT GMBH is a building-technology company providing services in building and energy systems as well as project management for technical building projects.

Solar & Photovoltaics
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RAEN Räumung und Entsorgung, Sahin Logo

RAEN Räumung und Entsorgung, Sahin 

Strengelbach · Since 2018

The core activity of RAEN company encompasses the provision of services in the areas of clearance & disposal, cleaning, moving & transport as well as demolition & dismantling.

Waste Management Industry
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Rafael Tschopp AG Logo

Rafael Tschopp AG 

Wauwil · Since 2024

Rafael Tschopp AG is a locally networked heating specialist offering consulting, sales, installation and commissioning of modern heating systems. Services also include heating renovations, repair and maintenance work, renovation projects and new-build services.

Plumbing & Building ServicesSolar & Photovoltaics
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Raich Entrümpelung GmbH Logo

Raich Entrümpelung GmbH 

Diepoldsau · Since 2023

Raich Entrümpelung GmbH provides clearance, painting and cleaning services. Services listed on the website include residential and commercial clearances, estate clearances, interior painting and deep cleaning.

Painting & PlasteringWaste Management IndustryFacility Management & Cleaning
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railenergy SA Logo

railenergy SA 

Lausanne · Since 2016

The company Railenergy SA is engaged in the development and distribution of solutions for energy efficiency in the rail sector.

Sustainability Sector
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Rail Partner Schweiz AG Logo

Rail Partner Schweiz AG 

Siblingen · Since 2001

The core activity of Rail Partner Schweiz AG is the reduction of curve squealing and rolling noise caused by the wheel-rail contact in trains. To this end, the company develops and implements special solutions, such as rail conditioning systems, to minimize noise on railway lines and station premises.

Sustainability Sector
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RandenSaft - Energiegenossenschaft Schaffhausen Logo

RandenSaft - Energiegenossenschaft Schaffhausen 

Schaffhausen · Since 2013

The core activity of RandenSaft Energiegenossenschaft Schaffhausen is investing in renewable energies, particularly in the construction and operation of photovoltaic systems on rooftops in the Schaffhausen region, in order to contribute to the energy transition.

Solar & Photovoltaics
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Rangernetz GmbH Logo

Rangernetz GmbH 

Solothurn · Since 2021

The company Rangernetz GmbH offers services in the field of nature interpretation, environmental education, and project development. The core activities include: Organization and implementation of excursions and environmental education programs, Development of customized solutions for the valorization and protection of nature, Sensitization and guidance of visitors and users of nature, Promotion and protection of biodiversity, Design and implementation of projects and tasks in the field of nature and environment. The company positions itself as an expert in the development of creative and sustainable solutions to protect, enhance and bring nature closer to people.

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.