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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,089 companies indexed · Last updated: today
DirectoryEnergy & Environment

Energy & Environment

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IndustryEnergy & Environment
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9'017 companies found

Härz AG Logo

Härz AG 

Gommiswald · Since 2020

The core activity of Härz AG includes the planning, execution and maintenance of electrical installations, building automation, renewable energies, security technology, IT and telematics for private, commercial and industrial customers throughout Switzerland. This also includes specific services such as photovoltaics, electromobility, smart home, emergency power supply, switchgear, laser engraving, garden lighting, building earthing and device testing.

Electrical Planning & InstallationSolar & Photovoltaics
View profile4.2(5)
Heinz Brändle Bedachungen AG Logo

Heinz Brändle Bedachungen AG 

Alt St. Johann · Since 1995

The core activity of Brändle Bedachungen AG is the provision of services in the field of roofing and sheet metal work, including the planning, execution and renovation of roofs, facades and lightning protection systems. The company also offers energy consulting and sheet metal work, and has a bending machine for processing sheet metal.

Solar & Photovoltaics
View profile5(5)
Helvetic - Power Sagl Logo

Helvetic - Power Sagl 

Bellinzona · Since 2013

The core activity of Helvetic Power Energy Solutions is the planning, development, installation and maintenance of renewable energy systems, including: solar energy (photovoltaics, solar thermal), wind energy (eolic), hydroelectric power (idroelettrico), geothermal energy and biomass. The company also offers services such as: energy analysis and consulting, installation and maintenance of heat pumps and other renewable energy systems, planning and implementation of energy projects, and consulting on the implementation of energy efficiency measures and compliance with environmental regulations.

Solar & Photovoltaics
View profile4.8(5)
Meyer AG Kanalunterhalt Logo

Meyer AG Kanalunterhalt 

Beringen · Since 1977

The core activity of Meyer AG is sewer maintenance, particularly sewer cleaning, waste disposal and drainage cleaning, as well as the maintenance and upkeep of drainage systems. This also includes services such as inspecting blockages/damage to pipes with a pipe camera.

Waste Management Industry
View profile5(5)
Hitz Holzbau AG Logo

Hitz Holzbau AG 

Neuheim · Since 2015

The core activity of Hitz Holzbau AG is timber construction, particularly the planning, construction and renovation of timber buildings, including element construction, interior finishing, conversion, renovations, staircase construction, agricultural buildings, façades, photovoltaics and terrace decking.

Building MaintenanceInterior ConstructionSolar & Photovoltaics
View profile5(5)
Hodel Energie GmbH Logo

Hodel Energie GmbH 

Buttisholz · Since 2014

The core activity of Hodel Energie is the utilization and marketing of solar energy.

Technical Consulting & EngineeringElectrical Planning & InstallationSolar & Photovoltaics
View profile3.2(5)
Holcim Foundation for Sustainable Construction Logo

Holcim Foundation for Sustainable Construction 

Zug · Since 2004

The core activity of Holcim Foundation is to promote sustainable building practices and support projects that advocate for environmentally friendly, socially responsible and economically viable construction methods. This includes awarding prizes, promoting educational programs, organizing events and supporting initiatives that promote sustainable development in the building industry.

Sustainability Sector
View profile4(5)
HSR Heizungsservice Riehen GmbH Logo

HSR Heizungsservice Riehen GmbH 

Riehen · Since 2017

The core activity of HSR Heizungsservice Riehen GmbH is the planning, installation, maintenance and repair of heating systems as well as the use of solar energy for hot water.

Plumbing & Building ServicesSolar & Photovoltaics
View profile4.2(5)
Wyimmo AG Logo

Wyimmo AG 

Sins · Since 1986

The core activity of Huber Dach und Wand is the execution of roofing and wall work, including the planning and installation of pitched roofs, flat roofs, facades, solar systems, modernizations and sheet metal work.

Solar & Photovoltaics
View profile5(5)
IMOVAenergy AG Logo

IMOVAenergy AG 

Hünenberg · Since 2021

IMOVAenergy AG is a power‑contracting service that develops tailored energy infrastructure solutions for complex residential developments and assumes responsibility for the technical energy systems. The service includes financing, design, implementation, technical and administrative operation, and consumption‑based billing for PV installations, ZEV metering infrastructure, energy management and e‑mobility.

Solar & Photovoltaics
View profile4.6(5)
IMOVATEC AG Logo

IMOVATEC AG 

Hünenberg · Since 2017

IMOVATEC AG provides energy management and energy services for residential and commercial properties. Its offerings include measurement and control of energy flows, modular billing and collection services for ZEV/vZEV/LEG, e-mobility solutions (IMOVAcharge), and contracting, planning and operation of photovoltaic and energy systems (IMOVAenergy).

Solar & Photovoltaics
View profile4.6(5)
Impact-Concept SA Logo

Impact-Concept SA 

Le Mont-Sur-Lausanne · Since 1987

The core activity of Impact-Concept is the implementation of environmental studies, particularly in the field of environmental impact assessment, soil and water pollution, geology and energy. The company offers services such as conducting environmental impact assessments, monitoring construction projects, carrying out fieldwork and creating studies on specific environmental topics.

Sustainability Sector
View profile3.8(5)
Industrielle Betriebe Murten Logo

Industrielle Betriebe Murten 

Murten · Since 2017

The core activity of IB-Murten encompasses the provision of sustainable energy supply solutions, clean drinking water, and innovative building technologies in the Murten region. Specifically, the company offers the following services: * Supply of high-quality water * District heating for businesses * Photovoltaic solutions for economic and environmentally friendly energy supply * E-charging stations for business customers * Electrical installations with individual consulting, support, and execution The company focuses on sustainable and environmentally friendly solutions and strives to actively shape the energy transition in the Murten region.

Energy Suppliers
View profile2.6(5)
InnoPlan Grogg GmbH Logo

InnoPlan Grogg GmbH 

Spiez · Since 2007

The core activity of InnoPlan Grogg GmbH is the provision of architectural and solar planning services, including renovations, new constructions and solar installations. The company also offers additional services such as garden planning, construction management and maintenance.

Architecture FirmsSolar & Photovoltaics
View profile4.8(5)
kabeltechnik swiss ag Logo

kabeltechnik swiss ag 

Schinznach Dorf · Since 1993

The company's core activity includes the planning, implementation, maintenance and upkeep of photovoltaic systems and renewable energy, including Smart Energy and electromobility. The company also offers services in the field of communication networks, such as Comnet HFC network, FTTx solutions, data networks and Wireless LAN.

Solar & Photovoltaics
View profile4.2(5)
Kämpfen Zinke + Partner AG Logo

Kämpfen Zinke + Partner AG 

Zurich · Since 2010

Kämpfen Zinke + Partner AG is an architectural firm specializing in the planning and realization of buildings, particularly in the areas of timber construction, energy efficiency, and sustainability. The company's core activity encompasses the provision of architectural services, from feasibility studies to turnkey handovers, as well as the development of holistic concepts for energetically autonomous, aesthetically refined, and individually designed buildings.

Architecture FirmsSolar & Photovoltaics
View profile4(5)
Kanal-Kollektiv Hofmann Logo

Kanal-Kollektiv Hofmann 

Zurich · Since 2020

Kanal-Kollektiv Hofmann provides drain and sewer cleaning services, performing electromechanical cleaning and camera inspections to locate and clear blockages. The company applies flat-rate pricing, conducts free condition assessments using a drain camera and offers a follow-up guarantee, invoicing only after a successful resolution.

Waste Management Industry
View profile5(5)
Kuhn Haustechnik AG Logo

Kuhn Haustechnik AG 

Höri · Since 1997

The core activity of Kuhn Haustechnik is the planning, installation and maintenance of heating and sanitary systems, including the provision of solutions for heat generation, heat distribution and sanitary technology. This includes the installation of heat pumps, solar systems, wood, pellet, oil and gas heating systems, as well as the execution of bathroom renovations and sanitary installations in single-family homes, multi-family homes and commercial properties.

Solar & Photovoltaics
View profile4.6(5)
Kummler+Matter EVT SA Logo

Kummler+Matter EVT SA 

Le Mont-Sur-Lausanne · Since 2019

Kummler+Matter EVT SA is a branch specialising in overhead line technology that develops, manufactures and installs system solutions for rail, tram and trolleybus operations. Its services include product development, system engineering, production (with a Swiss Made product range) and specialised offerings such as charging points, de-icing systems and line isolators.

Energy Suppliers
View profile5(5)
Lucchinetti Haustechnik GmbH Logo

Lucchinetti Haustechnik GmbH 

Zillis · Since 2021

The company Lucchinetti Haustechnik is a specialist in thermal systems, focusing on the planning, installation, maintenance, and repair of heating systems, thermal solar systems, and heat pumps. The core activities include: installation and maintenance of heating systems, planning and installation of thermal solar systems, installation and maintenance of heat pumps, regular inspections and repairs of heating systems and thermal solar systems, replacement of heating elements and anodes, descaling of boilers, and cleaning of underfloor heating and panels. The company also offers subscription services for regular inspections and priority support to ensure an efficient and safe system.

Solar & Photovoltaics
View profile5(5)
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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.