Energy & Environment

Urs Spirig Heizung und Sanitär AG 

Diepoldsau · Since 2003

The core activity of URS SPIRIG Heizung und Sanitär AG is the planning, installation and maintenance of building technology systems, particularly in the areas of heating, plumbing, solar and ventilation.

Valebin S.A. 

Bofflens · Since 1993

The core activity of Valebin SA is the operation of a controlled landfill (Type B controlled landfill) for the disposal of inert materials, such as construction waste, excavation soil and other non-hazardous waste. The company offers solutions for the storage and disposal of these materials and specializes in the rehabilitation of areas after the landfill process, by converting the surfaces back into agricultural land or forests.

Velte Solartechnik GmbH 

Appenzell · Since 2014

The core activity of Velte Solartechnik GmbH is the planning, installation and maintenance of solar systems, as well as supplementary services such as cleaning, crane work and aerial lifts.

Verein Soil to Soul 

Zurich · Since 2022

KUORI develops and manufactures shoes made from natural, biodegradable materials with the goal of revolutionizing the footwear industry and promoting a circular economy.

Vignarajah Energieberatung GmbH 

Bad Ragaz · Since 2023

Vignarajah Energieberatung GmbH provides energy consulting for residential and commercial buildings and prepares GEAK, GEAK Plus assessments and energy reports (SIA 380/1). Services include developing modernization concepts and advising on building envelope improvements, the selection of efficient heating systems such as heat pumps, and the integration of photovoltaic systems.

Viridén + Partner AG 

Zurich · Since 2004

The core activity of Viridén+Partner AG is the planning and consulting of energy-efficient renovations and conversions of buildings, particularly in the area of plus-energy and zero-energy houses, multi-family homes, office and commercial buildings. The company also offers expert opinions, courses, lectures and publications on these topics.

Virtual Global Trading AG 

Aarau · Since 2018

Virtual Global Trading AG provides a white‑label platform and software solutions for energy management and flexibility marketing. It offers a Customer Platform to centralise energy data, control energy flows and manage customer processes, and flexibility‑management tools for balancing, BESS marketing, peak shaving and ancillary services. The company also supports integrations (e.g. SAP, M365) and market access services.

Wassergenossenschaft Ibach 

Ibach · Since 1914

The core activity of Wassergenossenschaft Ibach is the supply of drinking water.

Weingart AG 

Kollbrunn · Since 1965

The core activity of Weingart AG primarily encompasses the planning, consulting and execution of sanitary installations, heating systems and metal construction projects.

Weisstanner AG, Elektroanlagen 

Celerina/Schlarigna · Since 1985

The core activity of Weisstanner AG is the provision of services in the field of electrical installations, including planning, implementation and maintenance of electrical systems, as well as the sale and installation of electrical appliances and lighting. This also includes specialized services such as lightning protection, photovoltaic systems, telematics, smart home solutions and e-mobility solutions.

Werke Wangen-Brüttisellen 

Brüttisellen · Since 2010

Werke Wangen-Brüttisellen is a municipal utility that supplies electricity, drinking water and fiber-to-the-home communication infrastructure. It operates and maintains the local networks (including grid connections, public lighting and solar feed‑in) and provides customer services such as meter reading, fault reporting and an online customer portal.

Weta GmbH 

Port · Since 2019

Weta GmbH provides building energy consulting, including GEAK, GEAK Plus and GEAK Neubau assessments, and offers support for photovoltaics, electromobility, PEIK analyses and investigating available funding.

Wey Spenglerei AG 

Buchs Lu · Since 1984

The core activity of Wey Spenglerei AG is the provision of services in the field of building technology, particularly in the areas of sheet metal work, solar, sanitary, heating and roofing. The company offers complete solutions for building technology in renovations and new constructions, emphasizing quality, expertise and personal service.

Windenergie Schweiz AG 

Aarau · Since 2019

The core activity of Windenergie Schweiz AG is the development, construction and operation of community wind farms, where the local population and companies are involved in electricity production and distribution. The company focuses on the construction of wind turbines and the promotion of renewable energy, providing electricity from wind energy to the local population and companies at preferred conditions.

WV Tenger KLG 

Schleitheim · Since 2013

Zahner & Artho Elektro GmbH 

Schübelbach · Since 2019

Zahner & Artho Elektro GmbH is an electrical installation and service company offering a wide range of services, including: strong and weak current installations, network and WLAN installations, telephony and intercom systems, video surveillance systems and building automation (Smart Home), lighting and photovoltaics, e-mobility and electrical work in agriculture, troubleshooting, storm damage repair and emergency assistance, replacement of existing distribution boards, and consulting and planning in all areas. The company's core activity lies in the installation, maintenance and repair of electrical systems, as well as providing electrical services to private and business customers.

ZIMMERLI Haustechnik GmbH 

Muhen · Since 2010

The core activity of Zimmerli Haustechnik GmbH is the planning, installation and maintenance of heating and plumbing systems, including the use of renewable energy sources such as solar thermal systems and heat pumps. In addition, the company offers service and repair services for existing systems as well as cleaning and maintenance work.

Zingg Haustechnik Nachfolger Uwe Ruprecht 

Biberen · Since 2003

The core activity of Zingg Haustechnik is the planning, installation, renovation, repair and maintenance of sanitary and heating systems for buildings.

Züger Energie GmbH 

Rieden Sg · Since 2010

Züger Energie GmbH provides energy consulting and services for renewable heating, photovoltaic systems and battery storage. Services include advisory and planning, tender review and execution, GEAK energy labelling, energy proofs according to SIA 380/1, modernization concepts, self-consumption optimization and assistance with subsidy applications and administration.

zumstein elektro GmbH 

Leissigen · Since 1998

The core activity of the company "Zumstein Elektro" is the provision of electrical installations and services in the field of electrical engineering, including: electrical installations, household appliances, TV and network systems, telephone systems, and solar systems. The company offers these services to private customers and companies in the regions of Leissigen, Habkern, Beatenberg, and Ringgenberg.

Zwahlen - Beyeler Haustechnik GmbH 

Rüeggisberg · Since 2012

The core activity of Zwahlen Beyeler Haustechnik GmbH encompasses the planning, implementation and maintenance of building technology, sanitary installations, heating systems, solar systems and vacuum cleaner systems.

Barras-RD Sàrl 

Vuisternens-En-Ogoz · Since 2025

The core activity of Barras-RD is the provision of services in the field of recycling, dismantling and transport, particularly in connection with the construction industry. Specifically, this includes: Dismantling of metal structures, such as tanks, boilers, cranes, etc. Recycling of metal waste, such as copper, aluminum, iron, etc. Transport of waste and materials, including the provision of containers and skips. Disposal of special waste, such as batteries, vehicles, gas cylinders, etc. The company positions itself as a partner for companies and private individuals seeking sustainable and environmentally friendly solutions for their waste disposal and recycling needs.

2D Démolitions et débarras Esteves Teixeira 

Collonges · Since 2022

The core activity of 2D Débarras Démolitions et Nettoyage is the provision of services in the areas of: * Waste disposal and removal of unwanted items * Relocation of apartments, houses and businesses * Building demolition and deconstruction * Professional cleaning of various situations, such as final cleaning after construction projects, office cleaning, etc. The company offers these services to private individuals and businesses in the Swiss Romandy region.

2M Elettro-Impianti Sagl 

Riva San Vitale · Since 2019

The core activity of 2M Elettro-Impianti is the planning, installation, maintenance and repair of electrical systems, including domotics, automation of gates, video intercoms, LED lighting and data and Wi-Fi networks.

4D Montagen GmbH 

Herzogenbuchsee · Since 2014

The core activity of 4D Montagen GmbH is the execution of electrical and industrial installations, including the planning, installation and maintenance of photovoltaic systems, electrical installations, tunnel infrastructure, building technology and electromobility. The company offers turnkey projects from a single source, from consulting and planning to installation and service.

Aaresolar GmbH 

Bettlach · Since 2024

abfallboerse schweiz.ch AG 

Stansstad · Since 2000

The company provides services in the field of waste management and residual material management. The core activity includes the organization and implementation of residual material tenders, the development of sustainability goals, and the provision of CO₂ reporting. The company supports various target groups, including medical facilities, retail, industry, municipalities, service companies, and public institutions, in the sustainable disposal of waste and residual materials.

abfallwirtschaft schweiz GmbH 

Stansstad · Since 2016

The core activity of the company "abfallwirtschaft schweiz GmbH" is waste management and material marketing for industrial companies, commercial enterprises, cantonal administrations, municipal administrations, and municipalities. The company offers customer-oriented solutions to achieve maximum value creation throughout the waste management process and enable sustainable net savings. These services include cost reduction, material marketing, quantity bundling, logistics optimization, and compliance with laws and regulations.

ABL Recy-Services SA 

Lausanne · Since 2006

The core activity of abl recy-services sa consists of collecting, processing and recycling construction site waste, including the treatment of construction site water, as well as consulting on waste management and construction site water treatment.

AB Marti AG 

Murten · Since 2011

AB Marti AG provides maintenance and asset-preservation services for drainage and sewer systems. Services include sewer cleaning, unclogging, CCTV inspections, repairs and rehabilitation, manhole emptying, mobile sludge treatment and leak testing. The company also offers video documentation, certificates and information about its vehicle fleet.

a energie AG 

Schüpfen · Since 2009

The core activity of the company "a energie" consists of planning, implementing, operating and maintaining district heating networks and plants, including energy production and distribution. The company also offers services such as on-call duty, technical service and plant construction.

A.F.H. Bau GmbH 

Zurich · Since 2021

The company provides services in the field of construction and real estate management, particularly in the areas of heat pumps, photovoltaic and storage systems. It also offers comprehensive consulting and project management from planning to implementation of construction projects.

Ägerital Energie Genossenschaft 

Oberägeri · Since 2014

The core activity of Ägerital Energie Genossenschaft is the production and sale of regional solar power from photovoltaic systems in the Ägerital and Menzingen regions. The company enables private individuals and companies to obtain 100% solar power from the region, thereby supporting climate protection.

Alteno AG 

Basel · Since 1987

The core activity of Alteno AG encompasses the planning, consulting and implementation of sustainable building technology and solar energy solutions. This includes in particular: planning of heating systems (heat pumps, wood heating systems, district heating); planning of photovoltaic systems with battery storage and e-mobility; energy consulting for large consumers, gastronomy, bakeries and commerce; load management and operational optimization; residential ventilation and ventilation systems for industry and commerce; ENAW target agreements for large consumers and energy operational optimization; strategic property owner consulting and concept development; expert opinions and reports for building energy systems. The company thus offers comprehensive services in the field of sustainable energy and building technology.

Altersol SA 

Bedano · Since 1991

The core activity of Altersol SA is the planning, installation and maintenance of renewable energy systems, particularly in the field of solar energy, including: Solar Photovoltaics (generation of electricity from solar energy), Solar Thermal (generation of heat from solar energy), Heat Pumps, Wood and Pellet Heating, Heating Systems and Temperature Control Systems. The company also offers services such as consulting, planning and installation of these systems.

A.M.P. Cheminée & Solaire, Daniel de Joffrey 

Montreux · Since 2003

The core activity of AMP Cheminée & Solaire is the planning, installation, maintenance and repair of heating systems, in particular: installation and maintenance of chimneys and flues, installation and maintenance of wood-burning stoves and other heating systems, maintenance and repair of oil-fired heating systems, installation and maintenance of solar panels, and cleaning and maintenance of chimneys and flues. The company also offers consulting services in the field of energy efficiency and heating systems.

anbeda AG 

Zug · Since 2017

anbeda AG runs a solar blog and provides support for do-it-yourself photovoltaic system builders, offering planning assistance, material advice and guidance up to grid connection and commissioning. The website publishes project reports, step-by-step self-build guides and practical information on photovoltaic systems; anbeda AG holds an ESTI installation permit according to NIV Art. 14.

Andreas Sprecher Haustechnik und Oelbrennerservice GmbH 

Buchs Sg · Since 1996

The core activity of Sprecher Haustechnik encompasses the planning and execution of heating systems, sanitary installations, air conditioning, solar systems and oil burner services. They offer professional services in the areas of heating, sanitation, renewable energy and industrial installations.

Aniterra AG 

Lyssach · Since 1999

The core activity of Aniterra AG is the implementation of independent controls in the areas of agriculture and similar production systems, particularly in the cantons of Bern, Lucerne, Uri and Obwalden. The controls cover various aspects such as animal welfare, primary production, water protection, direct payments, summering, IP Suisse, QM Swiss meat, milk standards, AOP Suisse, Guarantee SwissGAP, mountain and alpine farming, High-stem Suisse and record-keeping documents.

Anlagenbau Freiburghaus 

Walliswil B. Wangen · Since 2022

The core activity of Anlagenbau Freiburghaus is the execution of general metalwork and locksmithing, including welding contracts, sheet metal processing and plant construction. The company also offers specialized services such as the manufacture of template feed units, side tables, sight protection walls and other metal constructions for various fields of application, including garden and interior construction.

Araxa Solarbau AG 

Abtwil Sg · Since 2024

Araxa Solarbau AG is a specialist installation firm focused on the professional assembly of photovoltaic systems, covering mechanical mounting and electrical wiring up to the inverter. Services include drone surveying and PV‑Sol planning, thermal imaging, maintenance and cleaning, component inspections and documentation, provided primarily as a subcontractor to PV and electrical installation companies.

association terragir, énergie solidaire 

Meyrin · Since 2004

The core activity of Terragir is to raise awareness and educate schools, municipalities, companies and private individuals in the field of energy efficiency and sustainable use of natural resources. This includes the development and implementation of educational programs, workshops and projects aimed at enabling people of all age groups to change their energy consumption and consumption habits and make more sustainable decisions.

Astenis AG 

Stans · Since 2019

The core activity of Astenis AG encompasses two main areas: 1. **Energy Consulting and Photovoltaics**: The company provides consulting services for private individuals and companies in the field of energy efficiency and photovoltaics. This includes planning and implementation of PV systems, energy optimization, and reduction of the ecological footprint. 2. **Business Consulting**: Astenis AG offers business consulting services for small and medium-sized enterprises (SMEs) and start-ups. This includes the development of strategies for sustainable growth, success, and increased profitability.

ATVE Sàrl 

Daillens · Since 2021

The core activity of ATVE Sàrl is to provide solutions for the ecological transition of companies and industries. Specifically, this includes: Environmental protection and technology, including pollutant treatment, pyrolysis, fuel catalysts and materials for decontamination and dismantling; Renewable energies, particularly solar energy with Hanersun modules and undulators; Innovative technologies, such as LED technology and solutions for mobility and leisure. The company supports customers in reducing their ecological footprint, optimizing their energy consumption and increasing their profitability.

AVACON AG 

Schattdorf · Since 2010

The core activity of AVACON AG is consulting and services in the energy sector, particularly for small and medium-sized energy supply companies (EVU). The specific activities include: strategy consulting and development, corporate governance and organizational consulting, project management and leadership, consulting in the areas of electricity market liberalization and renewable energies, comprehensive support for EVU, crisis communication and communication concepts, evaluation and implementation of risk management systems, and temporary assumption of management functions. The company positions itself as a specialized consulting firm for the energy industry and offers a comprehensive range of services for EVU.

AVARI AG 

Wilderswil · Since 1993

The core activity of AVARI AG is the production and distribution of district heating, particularly through the use of wood and waste heat from regional sources, as well as the operation and maintenance of heat centers and boilers. The company also offers services such as house installations, maintenance and operation of heating systems, and supplies various areas in the Interlaken region with heat.

AVIS VERT Sàrl 

Carouge Ge · Since 2011

Avis Vert is an environmental consulting and engineering firm specializing in the integration of nature and the environment in urban spaces. The company's core activities include: environmental studies and analyses (faunal and floristic expertise); design and implementation of nature conservation and landscape projects; environmental monitoring and management (Environmental Monitoring, SER); raising public awareness and education on environmental and nature conservation issues; and developing concepts for the renaturation of urban spaces and the creation of habitats for wildlife. The company also offers specialized services such as chiropterology (bat expertise), ecology, and nature conservation planning.

AW Demontage AG 

Zurich · Since 1992

The core activity of AW Demontage AG is the execution of demolition, dismantling, and disposal work in the construction industry. This includes in particular: Interior demolition: Precise and gentle demolition work in the interior area, Dismantling: Professional dismantling of buildings and structures of all kinds, Demolition: Efficient demolition of plants and industrial facilities, Disposal: Sustainable and legally compliant disposal of all demolition materials. In addition, the company also offers excavator rentals and other services such as tenant dismantling.

Bader Fers Recycling SA 

Lucens · Since 2019

The core activity of Bader Fers Recycling SA is the collection, recycling and disposal of waste, as well as related services such as transportation, container rental and building demolition. The company offers the following services in particular: waste collection and recycling, container rental and disposal, transportation of goods, and safe demolition of buildings. The company focuses on environmentally friendly waste disposal and offers its customers tailored solutions to improve their environmental balance.

Bau fair GmbH 

Bichelsee · Since 2010

The core activity of Bau Fair GmbH encompasses the planning, execution, and installation of construction projects, particularly: new construction, renovation, and expansion of single-family homes, multi-family homes, commercial buildings, farms, barns, and public buildings, as well as the installation of photovoltaic systems. The company also provides comprehensive support, from needs assessment to planning, execution, and warranty for the work.