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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

Elektro Partner Klosters AG Logo

Elektro Partner Klosters AG 

Klosters · Since 2010

Elektro Partner Klosters AG provides electrical installations, solar system installation, service, maintenance and electrical inspections. The company also supplies automation and smart‑home solutions (Loxone, KNX, DALI), PLC/SPS development, and PC/IT/web services including networks, VoIP/telephony, hosting and remote support, and it imports and tests devices in its own test laboratory.

Electrical Planning & InstallationSolar & PhotovoltaicsIT Consulting & Services
View profile5(8)
Elektro Weber Partner AG Logo

Elektro Weber Partner AG 

Menzingen · Since 2014

The core activity of Elektro Weber Partner AG encompasses the planning, installation, maintenance, and repair of electrical systems and installations, including: Lighting: consulting, planning, and installation of lighting technology; E-Mobility: consulting, installation, and maintenance of charging stations for electric vehicles; Building Automation (Smart Home): installation and programming of intelligent home systems; Equipment testing: inspection and maintenance of electrical equipment; Fiber Optics: installation and laying of fiber optic cables; Renovations: renovation and modernization of electrical systems; Central Vacuum Systems: installation and maintenance of central vacuum systems; Alternative Energies: installation and maintenance of solar systems and other renewable energy sources. The company also offers a 24-hour emergency service for disruptions and repairs.

Solar & Photovoltaics
View profile4(8)
GRAVAG Energie AG Logo

GRAVAG Energie AG 

St. Margrethen Sg · Since 1979

The core activity of GRAVAG Energie AG and GRAVAG Thermo is energy supply and service, particularly in the planning, installation, maintenance and repair of heating and energy systems, such as heat pumps, gas and oil heating systems, pellet heating systems, hybrid systems, power-generating heating systems, combined heat and power (CHP) systems and photovoltaic systems. In addition, the company offers energy consulting, energy analysis and optimization as well as the sale of energy.

Plumbing & Building ServicesEnergy Suppliers
View profile2.4(8)
greeny International AG Logo

greeny International AG 

Zug · Since 2022

The core activity of greeny+ is the development and marketing of products and solutions for indoor farming and sustainable agriculture, particularly through the use of 3D printing technology and innovative cultivation methods. The company aims to enable access to healthy food and clean drinking water and promotes self-sufficiency through alternative cultivation concepts for home users and large-scale productions.

Sustainability Sector
View profile4(8)
Hungerbühler Elektroanlagen GmbH Logo

Hungerbühler Elektroanlagen GmbH 

Amriswil · Since 2000

The core activity of ELEKTRO-CITY GMBH encompasses the planning, installation and maintenance of electrical systems, including photovoltaic systems, smart home solutions, building automation and electrical installations for residential and commercial properties.

Energy SuppliersSolar & Photovoltaics
View profile4.8(8)
Kurt Frey AG Photovoltaik Logo

Kurt Frey AG Photovoltaik 

Küttigen · Since 2023

Kurt Frey AG Photovoltaik provides sanitary and heating services. The website is currently under construction and lists contact details such as email and telephone.

Solar & Photovoltaics
View profile4.5(8)
Nussbaumer Elektroanlagen AG Logo

Nussbaumer Elektroanlagen AG 

Schönenwerd · Since 2021

The core activity of Nussbaumer Elektroanlagen AG encompasses the planning, installation and maintenance of electrical systems, as well as the sale of household appliances. The company also provides services in the areas of photovoltaics, lighting and communication solutions.

Solar & Photovoltaics
View profile4.5(8)
Oxygen at Work AG Logo

Oxygen at Work AG 

Zurich · Since 2017

The core activity of Oxygen at Work is the planning, implementation and maintenance of 'smarter greening' in offices, in order to improve air quality and the working climate. To this end, the company combines high-performance plants with technology and offers individual plant concepts, analysis and project planning services.

Sustainability Sector
View profile5(8)
Russi Heizung-Sanitär AG Logo

Russi Heizung-Sanitär AG 

Andermatt · Since 1990

The company provides services in the field of heating and plumbing.

Solar & Photovoltaics
View profile4.9(8)
zevvy AG Logo

zevvy AG 

Horw · Since 2017

The company zevvy develops and offers a software solution for the billing of energy-related ancillary costs, particularly for property owners who use solar power. The platform enables automated and standardized billing of energy costs and provides interfaces for partners and an open platform for the integration of various systems.

Sustainability SectorSoftware Development
View profile5(8)
AGERE EFFICIENZA ENERGETICA SA Logo

AGERE EFFICIENZA ENERGETICA SA 

Chiasso · Since 2018

AGERE EFFICIENZA ENERGETICA SA distributes drinking water, natural gas and electricity to residential, commercial and industrial customers and provides related services such as public lighting, photovoltaic systems and fiber‑optic connectivity.

Energy Suppliers
View profile3(7)
Ch. Furrer Elektro GmbH Logo

Ch. Furrer Elektro GmbH 

Rickenbach Lu · Since 2000

The core activity of Ch. Furrer Elektro GmbH is the provision of electrical installations and services, including new construction, renovation and maintenance work, as well as the installation and maintenance of heat pumps, photovoltaic systems and fuse boxes.

Electrical Planning & InstallationSolar & Photovoltaics
View profile3.9(7)
H. Kreiner AG Logo

H. Kreiner AG 

Zurich · Since 1991

The core activity of H. Kreiner AG encompasses various services in the field of roofing and sheet metal work, including: sheet metal work, flat roof work, pitched roof work, lightning protection, photovoltaics, roof service, expert opinions, and occupational safety. The company thus offers a wide range of services for planning, execution, and maintenance of roofing and sheet metal work.

Solar & Photovoltaics
View profile4.3(7)
MGM solaire Sàrl Logo

MGM solaire Sàrl 

Saxon · Since 2023

The core activity of MGM Solaire Sàrl is the planning, installation and maintenance of photovoltaic systems, particularly in the Valais region of Switzerland. The company also offers additional services such as energy audits and consulting on the choice between solar thermal and photovoltaic systems.

Solar & Photovoltaics
View profile5(7)
Soltastic Basel GmbH Logo

Soltastic Basel GmbH 

Basel · Since 2022

The core activity of Solardach24 GmbH is the planning and installation of solar systems for single-family homes, multi-family homes, and commercial projects. The company offers a comprehensive service that ranges from consulting to project coordination and installation to commissioning of solar systems.

Solar & Photovoltaics
View profile4.9(7)
Toldo Recycling AG Logo

Toldo Recycling AG 

Weite · Since 1989

Toldo Recycling AG provides construction-material recycling services, operating a crushing plant and processing demolition materials into reusable aggregates.

Sustainability Sector
View profile4.9(7)
Altegg Deponie AG Logo

Altegg Deponie AG 

Schönholzerswilen · Since 2010

The core activity of Altegg Deponie AG is the disposal of mineral, inert excavation and demolition materials in an inert waste landfill for uncontaminated and contaminated mineral construction materials.

Waste Management Industry
View profile4.7(6)
ARA Kaisten AG Logo

ARA Kaisten AG 

Kaisten · Since 2001

The core activity of ARA Kaisten AG is the treatment of wastewater, in particular through the operation of the Ritanne wastewater treatment plant in Kaisten, as well as the utilization or disposal of residual materials. This also includes the operation and maintenance of parts of the sewer networks of the connected wastewater associations.

Waste Management Industry
View profile4.2(6)
Bonchi Widanaralalage Logo

Bonchi Widanaralalage 

Melchnau · Since 2021

The core activity of Bonchi is to collect and deliver second-grade fruits and vegetables that do not meet conventional trade standards due to their shape or size, thereby reducing food waste and promoting sustainability. The company offers various basket offers with fresh but imperfect fruits and vegetables, which are delivered weekly or every two weeks in different regions of Switzerland.

Sustainability Sector
View profile5(6)
BURRI Elektro + Solar GmbH Logo

BURRI Elektro + Solar GmbH 

Toffen · Since 2012

BURRI Elektro + Solar GmbH provides electrical and solar (photovoltaic) installations, planning and project engineering, and inspections of electrical and solar systems. The company also delivers telephony and IT installations, service and repair work, household appliance supply and installation, and offers energy solutions including storage and smart‑home/e‑mobility support, as well as assistance with subsidy and connection paperwork (e.g. KEV).

Solar & Photovoltaics
View profile4.7(6)
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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.