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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

Roner & Partner Scrl Logo

Roner & Partner Scrl 

Zernez · Since 2009

Roner & Partner Scrl is an electrical engineering firm providing planning, installation and repair of electrical systems as well as testing and maintenance of electrical equipment. Its services also include supply and installation of low-voltage (UKV) cabling, telephone system installation (Sunrise and Swisscom partner), sale of electronic appliances and photovoltaic (PV) systems.

Electrical Planning & InstallationSolar & Photovoltaics
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Roofmonkey GmbH Logo

Roofmonkey GmbH 

Hindelbank · Since 2023

The core activity of Roofmonkey GmbH is the consulting, planning, installation and servicing of solar energy systems, particularly in the field of balcony power plants.

Solar & Photovoltaics
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roofpower GmbH Logo

roofpower GmbH 

Lausen · Since 2011

The core activity of roofpower GmbH is the planning, construction and operation of photovoltaic systems, particularly on rooftops, with the goal of producing cost-effective "green energy" and contributing to the energy transition.

Solar & Photovoltaics
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RoomFor Dr. Friederike Vinzenz Logo

RoomFor Dr. Friederike Vinzenz 

Lenzburg · Since 2020

RoomFor offers scientific consulting and advisory services in the fields of sustainability, data analysis, and communication. The core activities include developing strategies and solutions for companies, institutions, and public authorities to achieve sustainability goals and implement effective communication strategies. This also includes conducting research projects, developing sustainability concepts, and advising on the implementation of sustainability measures.

Sustainability Sector
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ROTH OptiMist AG Logo

ROTH OptiMist AG 

Zuben · Since 2017

The core activity of ROTH OptiMist AG is the provision of services in the field of agriculture, particularly in manure removal, composting, and transportation of agricultural goods, such as manure and compost. This includes specific activities such as: * Manure removal from stables * Composting and turning of manure * Transportation of agricultural goods * Rental of specialized machinery such as manure spreaders and compost turners * Delivery and application of manure and compost to fields The company thus offers a comprehensive range of services for farmers and other actors in the agricultural sector.

Agricultural ServicesEnergy Suppliers
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Round Table on Responsible Soy Association (RTRS) Logo

Round Table on Responsible Soy Association (RTRS) 

Zurich · Since 2007

The company's core activity is the promotion and certification of responsible soy production and trade. The company provides a platform for certifying soy producers who meet certain standards for environmentally friendly and socially responsible production. It also supports the trade of certified soy and offers tools and resources for companies that want to buy and sell responsible soy products.

Sustainability Sector
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Roxpay AG Logo

Roxpay AG 

Wollerau · Since 2021

The core activity of Roxpay AG is to provide pay-per-use solutions for companies in the clean-tech industry, particularly for small and medium-sized enterprises (SMEs). These solutions enable companies to access new technologies without having to make high upfront investments, offering a flexible and scalable alternative to traditional financing models. Roxpay AG focuses on developing data-driven solutions that enable companies to increase their production and revenue while simultaneously improving their environmental footprint.

Sustainability Sector
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R. Pfeiffer Heizungen GmbH Logo

R. Pfeiffer Heizungen GmbH 

Schaffhausen · Since 2013

The core activity of R. Pfeiffer Heizungen GmbH is the planning, installation and commissioning of heating systems of all kinds, including oil, gas, wood, solar and heat pump heating systems, as well as the execution of pipe installations and official measurements.

Solar & Photovoltaics
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R. Rageth GmbH Logo

R. Rageth GmbH 

Scharans · Since 2013

The core activity of R. Rageth GmbH is the planning, consulting and execution of sanitary and heating systems, including related services such as maintenance, servicing and repair.

Solar & Photovoltaics
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R.R. Kanalreinigung GmbH Logo

R.R. Kanalreinigung GmbH 

Rickenbach B. Schwyz · Since 2017

R.R. Kanalreinigung GmbH carries out sewer and pipe cleaning operations and provides CCTV (Kanal‑TV) inspections and sewer rehabilitation services. Offerings include maintenance flushing, unclogging and drain cleaning for single‑family and multi‑family homes as well as commercial properties.

Waste Management Industry
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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.