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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,378 companies indexed · Last updated: today
DirectoryEnergy & Environment

Energy & Environment

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8'993 companies found

LOGISTA EG AG Logo

LOGISTA EG AG 

Spreitenbach · Since 2004

LOGISTA EG AG operates the LOGISTA marketplace for members of the DIE MEISTER trade community, providing a platform to procure building materials, tools and machinery. The company processes payments between suppliers and craft businesses and issues weekly collective invoices.

Painting & PlasteringSolar & Photovoltaics
View profile4.4(8)
Maison V. Guimet fils, Société Anonyme Logo

Maison V. Guimet fils, Société Anonyme 

Le Lignon · Since 1931

The company's core activity is the maintenance, inspection, repair and construction of sewage systems, including: inspection and diagnosis of sewage systems, repair and maintenance of sewage systems, construction and rehabilitation of sewage systems, camera inspection of sewage systems, leak detection and odor tracing, creation of schematic plans, performance of tightness tests, repair and maintenance of pumps and lifting stations, transportation and pumping of liquids. The company also offers emergency services and has a long history dating back to 1873.

Waste Management Industry
View profile4.5(8)
Müller Elektro Hitzkirch AG Logo

Müller Elektro Hitzkirch AG 

Hitzkirch · Since 1982

The core activity of Müller Elektro Hitzkirch AG is the planning, installation and monitoring of electrical and building technology, including: electrical installations, smart home solutions, building technology, network, telephone and WLAN installations, energy-efficient and automated building, and extensions with photovoltaic systems. The company provides comprehensive overall solutions for intelligent buildings and supports customers in the areas of agriculture and private construction projects.

Electrical Planning & InstallationSolar & Photovoltaics
View profile4.5(8)
NanoWatt S.A. Logo

NanoWatt S.A. 

Neuchâtel · Since 2013

NanoWatt S.A. is an electrical installation company with a federal diploma that provides planning and implementation of low- and high-voltage electrical systems, telephony and IT services; it also designs, sells and installs ecological LED lighting, security and home-automation systems.

Solar & Photovoltaics
View profile3.9(8)
Neosolar AG Logo

Neosolar AG 

Herisau · Since 2002

The core activity of Neosolar AG is the planning, consulting, installation and maintenance of solar systems, energy storage systems and electromobility solutions for private and commercial customers in Switzerland.

Solar & Photovoltaics
View profile5(8)
Nola Water Services GmbH Logo

Nola Water Services GmbH 

Rümlang · Since 2013

The core activity of Nola Water Services GmbH is the provision of services in the field of water supply and disposal, particularly: * Sewer cleaning and maintenance * Tightness testing * Rehabilitation of sewer systems * Limescale removal * Surface cleaning * TV recordings for damage identification * Repair and maintenance of water systems The company thus offers comprehensive solutions for the maintenance and operation of water supply and disposal systems.

Waste Management Industry
View profile5(8)
REFA Kanalreinigung GmbH Logo

REFA Kanalreinigung GmbH 

Brüttisellen · Since 2024

The core activity of REFA Kanalreinigung is the professional cleaning and maintenance of sewer and pipe systems, including pipe inspection, flushing, suction, pipe unclogging and surface cleaning. The company also offers maintenance agreements to ensure regular cleaning intervals and prevent major damage.

Waste Management Industry
View profile5(8)
Regazzi Schermature Solari SA Logo

Regazzi Schermature Solari SA 

Gordola · Since 2011

The core activity of Regazzi Schermature solari SA is the planning, sale and installation of shading and sun protection systems for indoor and outdoor areas, including pergolas, awnings, louvers, roller shutters, insect screens and other products, as well as related services such as consulting, installation and maintenance.

Solar & Photovoltaics
View profile4.4(8)
Regional Räumung Haligür Logo

Regional Räumung Haligür 

Frenkendorf · Since 2016

The core activity of the company 'Regional Räumung in Basel' is the provision of clearance, disposal and recycling services for private and commercial customers in the Basel region. This includes in particular: house and apartment clearances, commercial clearances, practice clearances, company clearances, valuable asset liquidations, appraisals, moves and transports, bulky waste disposal, clearance and recycling. The company emphasizes an environmentally friendly approach and a sensitive handling of customers' valuables.

Waste Management Industry
View profile5(8)
Rogger Sanitär-Heizung AG Logo

Rogger Sanitär-Heizung AG 

Ruswil · Since 1997

Rogger Sanitär-Heizung AG designs, installs and maintains building-technical systems, with a focus on sanitary installations, heating, ventilation and solar solutions, as well as bathroom renovations and a showroom. The company provides consultation, project management, maintenance and a 24-hour emergency service.

Solar & Photovoltaics
View profile4.9(8)
Rölli Schneider GmbH Logo

Rölli Schneider GmbH 

Unterentfelden · Since 2022

The core activity of Rölli Schneider GmbH is the provision of electrical services, including: electrical installations, network installations, photovoltaic systems, e-mobility solutions, and emergency power solutions. The company thus offers a wide range of services in the field of electrical engineering.

Electrical Planning & InstallationSolar & Photovoltaics
View profile5(8)
rwt Regionalwerk Toggenburg AG Logo

rwt Regionalwerk Toggenburg AG 

Bazenheid · Since 2001

The company is a regional energy and services provider that supplies its customers with electricity, water, communication and district heating. The core activities include the provision of energy and services such as fiber optic networks, operational management, pipeline data and technical services. The company also operates a hydroelectric power plant and offers additional services such as e-mobility and temporary network connections.

Energy Suppliers
View profile4(8)
Ryser Heizungen GmbH Logo

Ryser Heizungen GmbH 

Urdorf · Since 2012

The core activity of Ryser Heizungen GmbH is the planning, installation, renovation and maintenance of building technology systems, particularly heating systems, heat pumps, solar systems, underfloor heating and sanitary and heating systems.

Solar & Photovoltaics
View profile5(8)
Scholl Energies Sàrl Logo

Scholl Energies Sàrl 

Vernier · Since 2000

Solar & Photovoltaics
View profile4.5(8)
Selmoni Infranet AG Logo

Selmoni Infranet AG 

Münchenstein · Since 2006

The core activity of Selmoni Infranet AG encompasses the planning, implementation, and maintenance of infrastructure projects in the following areas: Fiber Services (FTTH network expansion), E-Mobility (electric charging stations and charging infrastructure), and Solar Power (photovoltaic systems and storage solutions). The company also provides consulting, planning, and implementation of projects in these areas and has specialized in the realization of sustainable and efficient energy and communication solutions.

Electrical Planning & InstallationSolar & PhotovoltaicsTelecommunications
View profile3.1(8)
ServiceTech GmbH Logo

ServiceTech GmbH 

Röthenbach Herzogenbuchsee · Since 2000

The core activity of ServiceTech GmbH is the planning, installation, maintenance and repair of building technology systems, particularly in the areas of heating, air conditioning/ventilation, solar thermal energy as well as swimming pool and wellness technology.

Plumbing & Building ServicesSolar & Photovoltaics
View profile4.8(8)
SH-Solartechnik AG Logo

SH-Solartechnik AG 

Baar · Since 2006

The core activity of SH-Solartechnik AG is the planning, installation and maintenance of solar systems and heat pumps, as well as the provision of energy storage solutions and smart energy solutions for a sustainable and independent energy future.

Solar & Photovoltaics
View profile5(8)
Solarenergie Seeland GmbH Logo

Solarenergie Seeland GmbH 

Studen Be · Since 2023

The core activity of Solarenergie Seeland GmbH is the planning, installation, and maintenance of photovoltaic systems for private households, with the goal of promoting sustainable energy generation and environmental protection. The company offers individual solutions tailored to its customers' needs, including energy management tools, regular maintenance and cleaning, to ensure efficient and reliable energy supply.

Solar & Photovoltaics
View profile5(8)
Solarex Sàrl Logo

Solarex Sàrl 

Belfaux · Since 2014

The core activity of Solarex Sàrl is the planning, installation and distribution of renewable energy solutions, particularly three types of solar energy systems: photovoltaic (PV), thermal solar energy and hybrid solar energy. The company also offers services such as applying for subsidies and commissioning the installed systems.

Solar & Photovoltaics
View profile4.5(8)
Solarlife GmbH Logo

Solarlife GmbH 

Balgach · Since 2020

The core activity of SolarLiFe is the development, manufacture and distribution of high-quality, long-lasting and portable batteries, in particular lithium batteries (LiFePO4), as well as related products such as inverters, charge controllers and solar modules, which are used for the storage and use of electrical energy, especially for solar systems.

Solar & Photovoltaics
View profile5(8)
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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.