Energy & Environment

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9'017 companies found

Elektro Sonderer AG

Appenzell · Since 1991

The company is an electrical installation business offering a wide range of services, including: planning and installation of high and low voltage systems, photovoltaics and smart energy, smart home and lighting, IT and multimedia, including network technology, and electrobiology. These services are provided to various types of customers, including agricultural businesses, residential and commercial properties, for both new constructions and renovations.

Solar & Photovoltaics

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Felix Unholz AG

Ebmatingen · Since 2002

The core activity of Felix Unholz AG includes comprehensive electrical installations, including high and low voltage, planning of electrical installations, maintenance services, telematics, cloud solutions, network and server solutions, as well as specialized services such as photovoltaic systems, storage systems, lifting and conveying systems, smart home systems, charging stations for electric vehicles and other electrical engineering solutions.

Solar & Photovoltaics

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GGS AG

Gelterkinden · Since 2014

The core business of GGS AG includes the areas of timber construction, roofing, sheet metal work and alternative energies. In particular, the company offers services such as timber construction, roof construction, timber element construction, facades, terrace decking, roof windows and roof dormers, sheet metal work, lightning protection, liquid plastic, roofing, renovations, maintenance work and solar systems.

Building MaintenanceTimber Construction & CarpentrySheet Metal Work

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Ghelma AG REDEKO

Meiringen · Since 1991

Ghelma AG REDEKO operates container (mulden) services, waste collection and sorting points, and excavation and inert-material landfill sites. The organisation provides recycling and composting services and handles sorting, reuse or disposal of construction waste, wood, metal, cardboard, plastics, green waste and similar materials.

Waste Management Industry

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Graf AG Heizung Lüftung Sanitär

Schötz · Since 2004

The core activity of Graf AG is the planning, installation, maintenance and repair of building technology systems, particularly in the areas of: * Heating (heating systems, heat pumps, wood heating, oil heating, gas heating) * Plumbing (renovation, new construction, repairs, service) * Ventilation (renovation, repairs, service) * Solar (thermal solar systems) The company also offers services such as bathroom renovations, decalcification and maintenance.

Solar & Photovoltaics

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Hüppi Dachbau AG

Goldingen · Since 2017

The core activity of Hüppi Dachbau AG is the planning, execution and maintenance of roof and building envelopes, including flat roofs, pitched roofs, roof windows, sheet metal work, solar systems, facades, shingles and liquid plastic coatings. The company also offers services in the areas of construction, renovation and major construction sites.

Solar & Photovoltaics

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IBC Energie Wasser Chur (IBC)

Chur · Since 2007

The core activity of IBC Energie Wasser Chur is to supply customers with energy and water, including: electricity from renewable sources (hydroelectric power and solar energy), gas (biogas and natural gas), drinking water from the Chur region, heat and cooling solutions from sustainable energy sources, and e-mobility solutions with charging infrastructure. The company also develops and operates heat networks and is responsible for billing services and maintenance of the supply networks.

Energy Suppliers

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Kanalsanierung 24 AG

Mägenwil · Since 2023

The company's core activity is the trenchless rehabilitation and maintenance of sewage pipes and pipe systems in buildings and main sewers, including the execution of tightness tests, construction work and the application of innovative technologies such as liner rehabilitation and spray coating processes.

Waste Management Industry

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Keller Gebäudetechnik GmbH

Niederwil Sg · Since 2016

Keller Gebäudetechnik GmbH provides planning, installation and maintenance of heating systems, including air‑to‑water and ground‑probe heat pumps, wood‑fired heating, thermal solar systems and gas and oil heating solutions.

Solar & Photovoltaics

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Kirsch + Egli AG

Wädenswil · Since 1978

Kirsch + Egli AG provides electrical installation and related services, including electrical planning, new-build and renovation work, maintenance and repairs of electrical systems. Services include conventional installations, lighting supply and installation, network, telephone and multimedia cabling, building automation, photovoltaic systems and alarm/video solutions.

Solar & Photovoltaics

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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.