Energy & Environment

Elektro23 GmbH 

Neuhausen Am Rheinfall · Since 2023

Elektro23 GmbH provides electrical installation services including smart home systems, telematics, photovoltaic systems and electromobility, and offers planning, consulting, service and maintenance.

Elektro Kleiner AG 

Rebstein · Since 2002

The company Elektro Kleiner AG offers a wide range of services in the field of electrical engineering. The core activities include: electrical installations, building technology and automation, telephone systems and UCC solutions, security and alarm systems, including camera and alarm systems, energy and sustainability solutions, such as LED lighting concepts, photovoltaic systems and electric vehicle charging stations, service and maintenance of electrical systems, including household appliances and control systems, and planning and project management of electrical projects. The company thus offers a comprehensive range of services in the field of electrical engineering, from planning and installation to maintenance and support of electrical systems.

Elektro Laube AG 

Lengnau Ag · Since 2010

Elektro Laube AG is an electrical installation company offering project planning, electrical installations for residential, industrial and commercial properties, communication systems, photovoltaic installations, e-mobility charging solutions and maintenance services.

Elektro Ottinger AG 

Goldau · Since 2013

The core activity of Elektro Ottinger AG includes the planning, installation and maintenance of electrical systems, particularly in the field of renewable energies, specifically photovoltaic systems. This includes work on roofs, the installation of inverters, the adaptation of distribution and the commissioning of systems. In addition, the company also offers services in the field of household, monitoring and entertainment devices.

Elektro Team Eich AG 

Eich · Since 2011

The core activity of Elektro Team Eich AG is the planning, installation and maintenance of electrical and solar systems, including: electrical installations, communication systems, electrical devices and lighting, solar systems and installations, repairs and service, electrical inspections and acceptance tests. The company thus offers comprehensive services in the field of electrical engineering and solar energy.

ENCO Energie-Consulting AG 

Basel · Since 1997

ENCO Energie-Consulting AG is a consultancy that supports public authorities and organisations in developing and implementing energy and climate policy. Its services include municipal energy management, renewable energy planning, climate change adaptation measures, national and international cooperation, association management and participatory/smart-city concepts.

energia alpina 

Sedrun · Since 2004

The core activity of energia alpina includes the generation, distribution and marketing of energy, in particular electricity, as well as the provision of services in the field of electrical installation, electrical planning and automation. The company also operates photovoltaic systems and offers e-charging stations. Additionally, it is active in network management and liberalization.

Energie Hunzenschwil AG (ENH) 

Hunzenschwil · Since 2012

The company's core activity is the supply of electricity to customers as well as the billing and management of electricity tariffs for various customer groups, including private customers, large customers and public utilities.

Energie Münchwilen AG 

Münchwilen Tg · Since 2013

The core activity of Energie Münchwilen AG is the generation and distribution of heat energy through the operation of district heating systems, particularly in the regions of Münchwilen, Murgtal and Eschlikon. The company operates heating plants fired with wet wood chips and has a network of heat distribution systems to deliver the generated heat to customers.

Enerhaus Engineering AG 

Zuchwil · Since 2011

The core activity of EnerHaus Engineering GmbH is planning and consulting in the field of building technology and energy, particularly in the areas of HLKS planning (heating, ventilation, air conditioning, sanitation) and energy concepts. The company also offers services such as energy certificates and training for building technology planners.

Entrag Entsorgungs- und Transport AG 

Grindelwald · Since 1979

The core activity of ENTRAG AG is environmentally friendly waste disposal and material processing, including: waste disposal, particularly of mixed construction waste, old wood and old metals; material separation and processing; transportation of waste and materials; waste collection and street cleaning; snow removal; demolition and clearance; crane services and special transports. The company thus offers a comprehensive range of services in the field of waste disposal and material processing.

Entreprise du Gaz S.A. Porrentruy, succursale de Delémont 

Delémont · Since 2016

Entreprise du Gaz S.A. Porrentruy, succursale de Delémont is a branch of Entreprise du Gaz SA that provides heating systems, sanitary installations and water distribution services. The branch also offers after-sales service, maintenance and a retail shop.

Entreprise du Gaz S.A. Porrentruy, succursale de Moutier 

Moutier · Since 2021

Entreprise du Gaz S.A. Porrentruy, succursale de Moutier provides services in heating, sanitary installations, potable water distribution and after-sales service. The company carries out planning, installation, repair and maintenance of heating and sanitary systems and operates an on‑call emergency service.

Eric Gerzner Sàrl 

Vétroz · Since 2016

Eric Gerzner Sàrl specialises in the recovery of ferrous and non-ferrous metals and in waste management. The company accepts materials such as copper, aluminium, stainless steel and brass, supplies bins and containers, and provides transport (multilift, crane truck, trailers) and disposal services for wood, cardboard, paper and bulky waste.

Eric Gerzner Récupération 

Vétroz · Since 2023

Eric Gerzner Récupération specializes in the recovery of ferrous and non‑ferrous metals and in waste management services. Offerings include collection and processing of metals (e.g., copper, aluminium, cables, stainless steel, brass, cast iron), provision of bins and containers (4–36 m3 and 1–2.5 m3) and transport using multilift and crane trucks.

ESPRI entreprises sociales pour l'insertion 

Aigle · Since 2020

The core activity of ESPRI is to promote the social and professional integration of individuals through various activities, including: Biodiversity and wildlife conservation (Biodiversité & Faune), solar and photovoltaic installations (Solar emploi), and services and trade (Biens & Services). The company also offers training and employment programs to integrate people into these areas. A special project is the creation of SOLAR, an undertaking specializing in the training and integration of individuals in the field of photovoltaics.

EssairVent SA 

Essertines-Sur-Rolle · Since 2010

EssairVent SA is a company responsible for developing, constructing and operating a wind farm project. The planned park comprises four wind turbines; site measurements and studies indicate favourable wind conditions and project an annual production per turbine of more than 10 GWh.

EVWR Energiedienste Visp - Westlich Raron AG 

Visp · Since 2004

The core activity of the company 'Energiedienste Visp - Westlich Raron AG' consists of providing services in the context of supplying the Visp - Westlich Raron region with electrical energy, including the operation and maintenance of the network in the districts of Visp and Westlich Raron.

EW Lindau AG 

Winterberg Zh · Since 2019

The core activity of EW Lindau AG is the supply of the municipality of Lindau with various energy sources and services, in particular: electricity supply, heat supply (district heating), water supply, and fiber optic network and services. The company also offers various services such as network maintenance, billing and customer care.

EWL Genossenschaft 

Lauterbrunnen · Since 1905

The core activity of EWL Genossenschaft is the supply of electricity, particularly through the use of hydropower, as well as the maintenance and operation of power grids and public lighting in the Lauterbrunnen region and its six districts.

EWZ Elektrizitätswerk Zermatt AG 

Zermatt · Since 1994

The core activity of Elektrizitätswerk Zermatt AG is the production and distribution of electricity, particularly the reliable, economic and environmentally friendly supply of electricity to the Zermatt region.

Fabian Dörig AG, Heizsysteme 

Appenzell Steinegg · Since 2010

The core activity of Fabian Dörig AG is the planning, installation and maintenance of heating, plumbing and ventilation systems. The company also provides consulting and planning services in the field of building technology and is committed to the use of renewable energies and efficient energy use.

Federer Elektrotechnik AG 

Oberegg · Since 2000

The core activity of Federer Elektrotechnik AG includes the planning, installation and maintenance of electrical systems and installations, including: power storage systems, new and renovation of electrical installations, communication technology (telephone, satellite), fibre optic splicing, photovoltaic systems, household appliances, energy-efficient lighting, electro-satellite systems, and telephone planning. The company also offers a 24-hour emergency service.

Fernwärme Selhofen AG 

Solothurn · Since 2023

Fix Solar Oftringen GmbH 

Oftringen · Since 2024

The core activity of FIX SOLAR is the planning, installation and maintenance of photovoltaic systems and solar solutions for private and business customers in Switzerland. The company offers comprehensive services, including consulting, planning, assembly, installation and maintenance of solar energy systems, to help customers reduce their energy costs and contribute to environmental protection.

Fondation pour le développement durable des régions de montagne 

Sion · Since 1999

The core activity of Fondation pour le développement durable des régions de montagne (FDDM) is to support and promote projects that contribute to the sustainable development of mountain regions. This includes: analysis and expertise, project management, participatory processes and moderation, strategy and action plans, training and further education, reports and documentation, and events. FDDM supports and promotes projects that improve the quality of life of the population in mountain regions, particularly in the areas of environment, economy, social affairs, culture, and politics.

Freshape SA 

Renens Vd · Since 2011

The core activity of Freshape is the development and provision of sustainable, modular and self-assembling solutions for living spaces based on renewable energies and enabling a connection to nature. This includes innovative products such as modular structures, energy-harvesting surfaces and intelligent displays that enable a sustainable lifestyle without compromising on comfort.

Fretz Kanal-Service AG 

Cham · Since 1990

The core activity of Fretz Kanal-Service AG is the provision of services in the field of sewer maintenance, cleaning, rehabilitation and inspection, including street and surface cleaning. This includes specific services such as drain and pipe cleaning, suction work and shaft recycling, sewer TV and tightness testing, as well as shaft rehabilitation.

Freuler Heizungen Sanitär AG 

Pfäffikon Zh · Since 2022

The core activity of Freuler AG is the planning, installation and maintenance of building technology systems, particularly in the areas of heating, plumbing and solar systems, for residential and commercial construction.

F & W Holzbau AG 

Freienbach · Since 1978

The core activity of F+W Holzbau AG is the planning, development and implementation of timber construction projects, including: carpentry, joinery, roofing, facade construction, element construction, terrace and grate construction, renovation and refurbishment work, and the installation of photovoltaic systems. The company offers its customers individual solutions and services in the field of timber construction and operates regionally.

Gebrüder Gerzner Recycling GmbH 

Wangs · Since 2019

The core activity of Gebrüder Gerzner Recycling GmbH is the recycling of components for the recovery of precious metals, particularly copper.

Gemeindewerke Villmergen 

Villmergen · Since 1977

The company's core activity includes the supply of water, electricity and heat, as well as electrical installations and the construction of solar systems. The company thus offers a comprehensive range of services in the field of energy and water supply.

Gerber Alteisen + Abbrüche AG 

Wohlen Ag · Since 1995

The core activity of Gerber AG encompasses the following services: demolition and disposal of scrap metal, electrical appliances, and other waste; crane services and transportation of goods and materials; skip rental services, providing skips for construction, industrial, commercial, and private customers; and clearance and disposal of various types of waste, including household appliances and other unwanted items. The company offers these services in the Zurich and Aargau regions and has locations in Dietikon, Nesselnbach, and Wohlen.

Gerber Electric 

Bussnang · Since 2007

Gerber Electric carries out planning, installation and repair of electrical systems and provides alterations as well as telephone, internet and network installations; services also include solar system installation and maintenance, low-voltage systems and trade in electrical equipment.

Gerber Solar Sàrl 

Porrentruy · Since 2019

The core activity of Gerber Solar is the planning, installation and maintenance of solar energy systems for private individuals and companies. This includes the production of solar energy through photovoltaic systems, the storage of energy in batteries and the use of solar energy for the operation of households and companies. The company also offers solutions for heat generation and energy efficiency optimization.

Gfeller AG 

Ipsach · Since 1995

The core activity of Gfeller AG Ipsach is the planning, installation and maintenance of heating and sanitary systems as well as other installation work in the field of building technology.

Giger + Storz AG 

Chur · Since 1975

The core activity of Giger + Storz AG is the planning, installation and maintenance of electrical systems. They offer services in the field of electrical engineering and are thus an electrical company.

Green Solar Energy Sagl 

Quartino · Since 2016

Green Solar Energy Sagl designs, supplies and installs photovoltaic systems, battery storage and electric vehicle charging stations. The company performs project planning, shading analysis, cabling and system testing for residential and commercial installations.

Grossniklaus Haustechnik AG 

Beatenberg · Since 2016

The core activity of Grossniklaus Haustechnik AG is the planning, installation and maintenance of building technology, particularly in the areas of: Sanitary technology, Heating technology, Solar technology, and Specialized construction. The company thus provides services in the field of building technology, from planning and installation to maintenance and repair of systems and facilities.

gsund4u gmbh 

Moosleerau · Since 2022

The core activity of gsund4u is the marketing and distribution of products and services in the field of water refinement, lime protection and autonomous power supply, complemented by personal consulting and accessories.

Gte SA 

Stabio · Since 2013

Gte SA provides design, installation and maintenance of electrical, thermotechnical, hydraulic and mechanical systems for residential, commercial and industrial projects. Services include NIBT-compliant electrical installations, RVCS and HVAC systems, photovoltaic and solar-thermal systems integrated with heat pumps and EV chargers, structured cabling, safety inspections and turnkey project delivery, and the company holds Swiss certifications such as the ESTI installation authorization I‑06426.

Hans Giezendanner GmbH 

Lütisburg Station · Since 2022

The core activity of Hans Giezendanner GmbH is the installation, maintenance and repair of heating and plumbing systems, including solar systems and building technology. The company also provides impulse consulting and services in the areas of modernization, new construction and repairs.

HAP Haustechnik GmbH 

Ostermundigen · Since 2021

The core activity of HAP Haustechnik GmbH is the planning, installation and maintenance of building technology systems, particularly in the areas of heating, water and solar installations, as well as consulting and planning in the field of renewable energies.

Hasensprung Solar GmbH 

Thusis · Since 2022

The core activity of Hasensprung Solar GmbH is the development, planning, implementation and operation of large-scale photovoltaic systems in Switzerland. This includes feasibility studies, 3D scans, visualizations, solar calculations, design, installation, grid connection, operation, monitoring and maintenance of solar systems. The company also offers services such as leasing models for building owners, where solar systems are installed and operated on rooftops to produce sustainable energy.

Haustechnik Blättler AG 

Giswil · Since 2014

The core activity of Haustechnik Blättler AG is the planning, installation and maintenance of building technology systems, particularly in the areas of sanitary, heating and solar technology. This also includes service work such as repairs and replacement of components.

HEIM AG Solarsysteme 

Aadorf · Since 2009

HEIM AG Solarsysteme designs, installs and maintains photovoltaic systems and related components such as inverters, battery storage, e‑charging stations and grid separation. The company delivers customised solutions for residential, commercial and industrial projects, including system planning, permitting and ongoing maintenance and support.

Hertli & Bertschy AG, elektrische Anlagen 

Tafers · Since 1971

The core activity of hertli + bertschy ag is the provision of services and specialized services in all areas of the electrical industry, particularly in the fields of electrical installations, building automation, solar systems and electromobility.

HORIZONTE-Group AG 

Lucerne · Since 2019

The company's core activity is consulting and services in the field of energy and climate management, particularly for energy supply companies, municipalities, and the real estate industry. The activities include, among others: Contracting and district heating planning, decentralized energy generation and CHP checks, CO₂ strategy consulting and energy audits, e-mobility concepts and charging management, energy management and ISO 50001 certification, churn management and customer loyalty, sub-metering and metering point operation, and transformation planning and consulting for energy supply companies. The company also offers workshops and moderation to support customers in implementing their energy and climate goals.

Hytecon AG 

Lucerne · Since 2015

The core activity of HYTECON is the development and distribution of products that improve and protect water quality, particularly in the area of removing pollutants such as plastics, hormones and PFAS. The company offers individual solutions to both private and commercial customers and has a team of researchers and developers focused on developing innovative products.

I.C. Morandi Sagl 

Roveredo Gr · Since 2011

The core activity of Morandi Trasporti Sagl is the provision of transport and logistics services, particularly in the field of goods transportation and waste management. The company offers services such as the disposal of vegetation material, the clearance of cellars and attics, as well as the transportation of goods.