Energy & Environment

Muchenberger AG 

Bottmingen · Since 1987

The core activity of Muchenberger AG is the planning, consulting and sale of bathroom fixtures, pool systems, sanitary and heating solutions. The company also provides services in these areas and supports customers in the realization of their individual projects.

Mulde24 AG 

Steinhausen · Since 2018

The company offers a dumpster rental service where customers can order a dumpster online and choose various options such as delivery location, waste type, dumpster size, and date. The core activity of the company is the rental of waste containers and the disposal of waste.

Ovivo Switzerland AG 

Witterswil · Since 1971

The core activity of Ovivo is the development and provision of technological solutions and systems for water treatment and purification, particularly for municipal utilities and industrial companies. The company offers products and services in the areas of electronics, metal production and processing, analytics, metal wastewater, ultrapure water and chemicals consumption materials.

Patrick Birchler 

Collombey · Since 2006

Patrick Birchler provides recycling and recovery services for ferrous and non‑ferrous metals, including scrap purchase and sale, sorting and processing (cutting, shearing, crushing) and dismantling of metal installations.

Roland Betschart Kanalreinigung GmbH 

Hirzel · Since 2021

The core activity of Roland Betschart Kanalreinigung GmbH is the professional cleaning and maintenance of sewer and pipe systems, including high-pressure cleaning, suction work, surface cleaning, tightness testing and winter services, to ensure the functionality of wastewater systems and prevent blockages, deposits and damage.

Salamon Planung GmbH 

Rifferswil · Since 2018

Solarchraft Berner Oberland GmbH 

Wimmis · Since 2022

The core activity of Solarchraft is the planning, installation and maintenance of photovoltaic systems, charging stations and energy optimizations, including consulting and administration of projects in the field of renewable energies, particularly solar energy.

SOPROGAZ SA 

Aubonne · Since 1936

The core activity of Soprogaz SA is the development and provision of solutions for heating technology and systems, including after-sales service, maintenance and repair of heating installations.

Spenglerei Stratmann 

Basel · Since 2020

The core activity of Spenglerei Stratmann is the provision of services in the field of roofing, particularly in the areas of: sheet metal work and sheet metal specialties, roofing (both pitched and flat roofs), terraces and garden plates, sealing and polybau, solar and photovoltaic systems, and sanitary work. The company also offers services in the areas of roof renovation, demolition and disposal of old roofs, as well as the installation of new roofs.

Steinegger Elektro AG 

Altendorf · Since 1984

The company's core activity includes the planning, implementation, maintenance and upkeep of energy supply systems, including network maintenance, new network construction, construction of transformer stations, maintenance of metering systems, meter control and billing, as well as work on house installations, repairs and customer service.

Steiner Energie AG 

Malters · Since 1982

The company offers a wide range of services and solutions in the fields of building technology, energy efficiency and communication. The core activities include: building automation and smart home solutions, energy efficiency and control systems, maintenance and servicing of building technology, planning and consulting for building projects, communication and telecommunications, security and burglary protection, video surveillance, photovoltaics and e-mobility, as well as load and charging management for electric vehicles. Thus, the company provides a comprehensive range of services for the planning, installation, maintenance and operation of building technology and energy efficiency solutions.

SyEnergy AG 

Stans · Since 2025

The core activity of SyEnergy is the planning, installation and maintenance of renewable energy systems, in particular: solar systems (photovoltaics), electromobility (charging stations and billing systems), energy management (energy flow management and optimization) and heat pumps. The company also offers consulting, planning and implementation of energy projects as well as maintenance and repair of systems.

Thalmann Haustechnik AG 

Hitzkirch · Since 2019

The core activity of Thalmann Haustechnik AG is the planning and execution of heating, plumbing, solar and ventilation systems for new and renovation projects. This includes in particular the consulting, planning and execution of: heating systems, plumbing installations, solar systems, ventilation systems, and bathroom installations. The company thus offers comprehensive services in the field of building technology.

Toiture Willy Goncerut S.A. 

Gland · Since 1999

The core activity of Toiture Willy Goncerut SA is the insulation and roofing of buildings, particularly external insulation of roofs without interfering with the interior of the houses. The company also offers additional services such as renovation, solar, photovoltaic, roof windows, facades, maintenance, roofing and sheet metal work.

Trafigura Commodities Sàrl 

Geneva · Since 2020

Trafigura Commodities Sàrl is a commodities trading company that trades and supplies minerals, metals and energy products. It provides infrastructure, logistics, shipping and storage services and conducts related trading activities such as carbon trading and renewables to support commodity supply chains.

Trafigura Forestry Colombia Sàrl 

Geneva · Since 2022

Trafigura Environmental Solutions Sàrl 

Geneva · Since 2021

A. Kathriner GmbH 

Stalden (Sarnen) · Since 1996

The company provides services in the field of roofing and sheet metal work, particularly in connection with the installation and maintenance of solar systems. It focuses on sustainable solutions for connecting roofs and solar systems and offers consulting and services for planning and implementing solar projects.

Werner Haustechnik AG 

Rheinau · Since 1994

The core activity of Werner Haustechnik AG includes the planning, execution, maintenance and renovation of sanitary and heating systems, including bathroom conversions and renovations, as well as the management of water supply.

Zwilag Zwischenlager Würenlingen AG 

Würenlingen · Since 1990

The core activity of Zwilag Zwischenlager Würenlingen AG is the operation of disposal facilities for radioactive waste, in particular the storage and conditioning of low-, medium- and high-level radioactive waste as well as spent fuel elements.

Allenbach AG Bedachungen + Gerüstbau 

Müntschemier · Since 2002

The core activity of Allenbach AG primarily encompasses the areas of roofing work, photovoltaic systems, and façade construction. Specifically, the company offers services such as the construction of pitched roofs, flat roofs, and skylights, as well as the installation of photovoltaic systems and the construction of façades.

Alpiq Suisse SA 

Lausanne · Since 1919

Alpiq Suisse SA is an energy company that generates electricity and manages a portfolio of hydropower, solar, wind, hydrogen and thermal assets. It also provides energy trading, market-access and portfolio services as well as customised energy- and asset-management solutions.

ALTIS Groupe SA 

Le Châble Vs · Since 2017

The core activity of ALTIS is to provide services and solutions in the field of energy supply, particularly in the areas of electricity, water, heat, mobility and sustainable development. The company offers a range of services, including the management of electricity and water networks, the promotion of renewable energies, the installation of photovoltaic systems, the provision of e-mobility solutions and the conduct of energy audits. ALTIS positions itself as a committed player in the energy transition and offers innovative solutions for private individuals, companies and municipalities to jointly shape a sustainable future.

Barras Bon debarras 

Fribourg · Since 2021

The core activity of Bon Débarras is the professional clearance service, i.e. the emptying and clearing of residential and commercial properties, including apartments, houses, cellars, attics and other premises, throughout Switzerland, particularly in the Romandy region and parts of German-speaking Switzerland.

BAUMANN ENTSORGUNGS AG 

Weinfelden · Since 1997

The core activity of Baumann Entsorgungs AG is the provision of services in the field of waste management and transportation, particularly: * Skip and container services * Crane and grabber work * Tipper work and transportation * Waste disposal and recycling. The company thus offers comprehensive solutions for the disposal and transportation of materials and goods.

Bloom4earth Sàrl 

Chêne-Bougeries · Since 2024

Bloom4Earth is a provider of renewable energy solutions in the Swiss Romande region. The company's core activity consists of the installation and distribution of: solar panels (photovoltaic systems) and heat pumps. Additionally, the company offers consulting and support services for the planning and implementation of renewable energy projects, supporting its customers in their transition to a sustainable and environmentally friendly energy supply.

Briand AG 

Lyss · Since 1990

The core activity of Briand AG is the planning, execution and maintenance of sanitary, heating and solar systems. This includes in particular: sanitary installations and repairs, heating renovations and installations (including wood heating, pellet, district heating, heat pumps, gas heating, oil heating), solar systems for hot water and heating support, bathroom renovations and conversions, planning and realization of sanitary and heating systems, service and maintenance of sanitary, heating and solar systems. The company also offers a sanitary emergency service and supports industrial companies in the planning and execution of compressed air systems and machine cooling networks.

Brüesch AG 

Churwalden · Since 1977

The core activity of Brüesch AG is the planning, installation and maintenance of building technology systems, particularly in the areas of plumbing, heating and photovoltaics. The company offers services such as consulting, planning and installation of sanitary systems, heating systems and ventilation systems, and has an experienced team of skilled professionals, including plumbers, heating engineers and sanitary fitters.

Bucher Heizungen AG 

Bühl B. Aarberg · Since 2011

The core activity of Bucher Heizungen AG is the planning, installation, maintenance and servicing of heating systems, particularly environmentally friendly and cost-effective solutions such as heat pumps, solar systems and wood heating systems. The company offers free consulting and individual solutions for customers in the Biel and Seeland region.

Buchmüller GmbH 

Bischofszell · Since 2004

The core activity of Buchmüller GmbH encompasses the planning, installation, maintenance, and repair of heating, plumbing, and household technology systems, including the delivery and installation of household appliances. The specific activities include: Heating: planning, installation, and service for gas heating systems, oil heating systems, wood-fired heating systems, and alternative heat generation; Plumbing: planning, installation, and repair of plumbing installations and devices, including faucets, boilers, and water softening systems; Household technology: delivery, installation, and maintenance of household appliances such as kitchen electrical appliances, washing machines, and dryers. Additionally, the company offers emergency services for water damage and bathroom renovations.

CF-Enterprises GmbH 

Zuzwil Sg · Since 2021

The core activity of CF-Enterprises GmbH is consulting companies in the areas of sustainability, energy efficiency and resource management. The company offers specific services such as energy audits, resource analyses, funding research and consulting, carbon footprint monitoring and software solutions to support companies in the development and implementation of sustainable concepts.

Chauffage entretien Luis Figueiredo Sàrl 

Etoy · Since 2005

Chauffage entretien Luis Figueiredo Sàrl is a heating services company providing installation, maintenance and repair of heating systems and project studies for renovations. Services include gas, oil and wood/pellet boilers, heat pumps, solar thermal and photovoltaic panels, hot‑water systems, desludging and descaling, and maintenance contracts with a 7‑day emergency service.

Ch. Posch & Partner AG 

Thalwil · Since 2006

The core activity of ELITE Electro-Partner (Ch. Posch & Partner AG) is the provision of electrical installations and related services, including: electrical installations (from simple sockets to complex building automation), photovoltaics, e-mobility, multimedia, building automation, and telephony. The company offers these services to private households and businesses in the Thalwil, Zurich-Wollishofen, and Langnau a./A. regions.

DHZ AG 

Lufingen · Since 2009

The core activity of DHZ AG is the disposal and recycling of waste, particularly through the operation of landfills and the processing of materials. The company offers services such as logistics, infrastructure and landfill expansion, and has specialized processes like supersort to recycle materials and reintroduce them into the product cycle.

Elektrizitätswerk der Stadt Zürich 

Zurich · Since 2008

The core activity of ewz lies in energy production and supply, as well as in the development of solutions for energy and communication. The company is also committed to a sustainable energy future and supports projects that protect and promote the environment.

Elektrizitätswerk Rümlang Genossenschaft 

Rümlang · Since 1908

The company's core activity is the secure, sustainable and innovative supply of energy and communication services, including the provision of electricity, broadband and fibre-optic connections, as well as the promotion of renewable energies and smart energy concepts.

Ellenbroek Hugentobler AG 

Kreuzlingen · Since 2012

Ellenbroek Hugentobler AG is an electrical engineering firm providing services including electrical installations, telematics, fiber-optic (LWL) systems, network construction, building technology, photovoltaics and e-mobility, as well as service, maintenance, planning and inspections.

Ellenbroek Hugentobler AG 

Frauenfeld · Since 1975

Ellenbroek Hugentobler AG is an electrical engineering company offering services such as electrical installations, network construction, telematics, building services, photovoltaics, e‑mobility and service/maintenance. The company also provides planning, consulting and control/security solutions and is part of the Baumann Koelliker Gruppe.

Ellenbroek Hugentobler AG 

Romanshorn · Since 2007

Ellenbroek Hugentobler AG provides electrical engineering services, including electrical installations, telematics, fiber-optic network construction, building services, photovoltaic systems and e-mobility solutions. The company also offers maintenance, planning and consulting, as well as control and security services, and is part of the Baumann Koelliker Gruppe.

EW Oftringen AG 

Oftringen · Since 2008

EW Oftringen AG is an energy utility operating its own distribution network and offering services in electricity, water and telecommunications. The company supplies electricity and water and also markets Quickline telecommunications products. Its services include network operation and energy procurement, energy-efficiency advisory, support for solar installations and online customer services such as meter-reading submission and connection handling.

Forces Motrices de l'Avançon SA 

Bex

Forces Motrices de l'Avançon SA is an electricity company that produces renewable energy and operates local distribution, including generation at the Sublin plant; since 2024 it has delegated operational and commercial activities to Romande Energie.

Franz Twerenbold AG 

Baar · Since 1990

The core activity of Franz Twerenbold AG is the disposal and recycling of materials such as paper, cardboard, scrap metal and metal. The company offers services to private households and industry/commerce, including the separation, sorting and processing of recyclable materials for reuse.

Frey Electric AG 

Triengen · Since 1990

The core activity of Frey electric AG is the planning, installation and maintenance of electrical systems, including lighting design, photovoltaics and electromobility. The company also offers a 24/7 emergency service and is involved in the planning and installation of electrical systems for various fields of application.

Fricompost Freiburgische Grünentsorgungsgesellschaft AG 

Posieux · Since 1996

Fricompost Freiburgische Grünentsorgungsgesellschaft AG processes non‑fermentable green waste into compost and provides disposal services as well as fertilizer, soil and wood products for gardening and agriculture. Fermentable green waste is sent to the biogas plants of Axpo Biomasse AG for production of natural fertilizer and renewable energy.

GOWatt sàrl 

Vuiteboeuf · Since 2023

The core activity of Gowatt is the planning, installation and maintenance of solar systems for private, commercial and agricultural customers. This also includes energy analyses, consulting and the implementation of CECB (Contrôle des Émissions de CO2 des Bâtiments) analyses to optimize the energy efficiency of buildings.

Hardwasser AG 

Pratteln · Since 1956

The company's core activity is the extraction, treatment and distribution of drinking water. The company operates a water treatment plant that extracts raw water from the Rhine and groundwater sources, treats it and supplies it to the population as drinking water. The treatment process includes various steps such as pre-treatment, rapid filtration, activated carbon filtration and UV disinfection. The company places great emphasis on water quality and carries out regular checks and laboratory tests to ensure the safety and quality of the drinking water.

Heizteam Savaris AG 

Brugg Ag · Since 1996

The Heizteam AG company primarily deals with the installation, maintenance and repair of heating systems, including environmentally friendly and cost-effective solutions such as wood heating systems, gas heating systems and heat pumps. They also offer consulting services for planning and implementing individual projects in the field of building technology.

InfraWerkeMünsingen (IWM) 

Münsingen · Since 2002

The core activity of InfraWerkeMünsingen is to supply customers with energy, water, and heat. Specifically, this includes the provision of: electricity supply, water supply (drinking, utility, and firefighting water), heat supply, services in the field of energy and water supply, electromobility, and GIS (Geographic Information Systems) for power generation. In addition, the company operates distribution networks for energy and water and offers further services such as public lighting.

Insatech AG 

Bachenbülach · Since 2015

The core activity of InsaTech AG is the rehabilitation of defective pipes within buildings, particularly using the so-called pipe-in-pipe method, where a new pipe is created inside the old pipe using a polymer plastic mass. This also includes services such as 3D pipe plans, TV inspection and pressure testing of drainage pipes.

Intrex GmbH 

Otelfingen · Since 2018

The core activity of Intrex is the recycling and disposal of various materials and waste, including PET beverage bottles, glass, bicycles, used clothing, textiles, shoes, Styrofoam, steel, sheet metal, bulky waste, special waste, solar modules, used tires and plastic bottles. The company also provides transportation and logistics services, including skip and disposal services, as well as the operation of a recycling park in Otelfingen.