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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,173 companies indexed · Last updated: today
DirectoryEnergy & Environment

Energy & Environment

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9'016 companies found

Arosa Energie Logo

Arosa Energie 

Arosa · Since 2011

Arosa Energie supplies electricity to customers, operates the distribution network and runs hydropower and solar generation facilities. It provides grid services (connections, public lighting), electric mobility charging options, advice on photovoltaic installations, and handles feed-in tariffs and periodic electrical inspections.

Energy Suppliers
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Artemisia - Anne Litsios-Dubuis Logo

Artemisia - Anne Litsios-Dubuis 

Maracon · Since 2022

The core activity of Artemisia is the provision of services in the field of ecology and environment, particularly in the areas of: species conservation, natural habitat management, data analysis and interpretation, impact studies, and urban ecology and green space planning. The company offers consulting and research services to public and private clients to protect and promote biodiversity.

Sustainability Sector
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Arva Greentech Remediation AG Logo

Arva Greentech Remediation AG 

Zug · Since 2021

Arva Greentech Remediation AG provides environmentally neutral products and procedures for cleaning and remediating contaminated soils and surfaces using a patented superoxidation process (Arvox). Offerings include two‑component surface cleaners, mobile treatment units and tailored remediation solutions for oil‑based mud, oil sludges and other hydrocarbon‑contaminated substrates.

Sustainability Sector
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A.S. Alu-Concept SA Logo

A.S. Alu-Concept SA 

Vernier · Since 1968

The core activity of AluConcept Face InTec is the development and implementation of innovative, high-performance and high-quality solutions for building facades, particularly in the field of solar photovoltaic facades. The company focuses on planning, developing and realizing facades that are both energy-efficient and aesthetically pleasing. In addition to facade planning and realization, the company also offers services in the fields of locksmithing and aluminum assembly.

Solar & Photovoltaics
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as-automotion ag Logo

as-automotion ag 

Oppligen · Since 2010

The core activity of as-automotion ag is the development of systems for the automation of devices, machines and plants in the mechanical and electrical engineering industries as well as in building and energy technology. This includes the planning, development, design, assembly, commissioning and maintenance of automation solutions. The company also offers services such as body leasing to support customers in times of resource bottlenecks and deadline pressure.

Solar & Photovoltaics
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ASCENDANCY Transformational Services GmbH Logo

ASCENDANCY Transformational Services GmbH 

Herlisberg · Since 2017

The core activity of Ascendancy Transformational Services GmbH is consulting and investing in transformative industries and products, particularly in the areas of: * Development and distribution of innovative products, such as Covid-19 rapid tests and individualized home factories * Consulting and supporting private and public institutions in large-scale projects with positive impacts * Development and support of solutions for renewable energy storage, such as Gravity Storage The company focuses on identifying and supporting innovative projects and companies that have the potential to have a positive impact on society and the environment.

Sustainability Sector
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Ascentys Sàrl Logo

Ascentys Sàrl 

Courroux · Since 2022

The core activity of Ascentys is the development and provision of a platform for ESG analysis, management and reporting, enabling companies to easily and comprehensively manage their sustainability performance. The platform allows companies to measure and improve their performance across 360 environmental, social and governance indicators.

Sustainability SectorSoftware Development
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AS-DE Sàrl Logo

AS-DE Sàrl 

Lausanne · Since 2023

AS-DE Sàrl provides planning, consulting and installation of renewable energy systems, with a focus on photovoltaic panels, air–water heat pumps and electric vehicle charging stations. The company carries out feasibility studies, manages authorisations and subsidy applications, and handles installation and commissioning. AS-DE is a member of Swisssolar and follows the installation conditions of the PAC Système Module label.

Solar & Photovoltaics
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AS Engineering AG Logo

AS Engineering AG 

Rüedisbach · Since 2005

The company's core activity is the production and delivery of solar power. The company operates its own solar power plants at various locations in Switzerland and supplies the generated electricity to customers. In addition, the company offers services such as monitoring and maintenance of solar systems.

Energy Suppliers
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ASEVA Sàrl Logo

ASEVA Sàrl 

Lausanne · Since 2019

The core activity of AlphaSEVA is to connect farmers with consumers by creating transparent and trustworthy supply chains for natural, healthy food products, ensuring the quality, freshness and safety of products from production to consumption.

Sustainability Sector
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ASSISTECH Sàrl Logo

ASSISTECH Sàrl 

Monthey · Since 2019

The core activity of Assistech Sàrl is the treatment, disposal, recycling and recovery of sludges and other residues from wastewater treatment plants (STEP), construction sites and industries. This includes in particular: treatment of sewage sludge and wastewater sludge, treatment of construction site sludges, treatment of industrial sludges, dewatering of sludges and analysis of sludges. The company thus offers services in the field of sludge management and treatment.

Waste Management Industry
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Association Africa 21 Logo

Association Africa 21 

Geneva · Since 2011

The core activity of Africa 21 is to promote sustainable development in Africa by providing strategy consulting, research, communication and capacity building for governments, international organizations and other stakeholders. The company focuses on three thematic priorities: leadership, good governance and sustainable development, in order to have a measurable impact on the continent. Africa 21 offers services such as strategy development, implementation of research projects, creation of policy documents and organization of events to achieve the goals of sustainable development.

Sustainability Sector
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Association Apidae Logo

Association Apidae 

Satigny · Since 2017

Association Apidae works to protect bees and promote biodiversity. The association provides educational workshops and field activities, participates in scientific projects such as Arista, and runs adoption programmes ("Adopte une ruche") together with related product sales including honey.

Sustainability Sector
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Association Autovoltaïc Logo

Association Autovoltaïc 

Neuchâtel · Since 2021

The core activity of the company 'Autovoltaic' is the promotion and support of self-build projects for photovoltaic systems in the Neuchâtel region and its surroundings. The company provides a platform for members to support each other in the planning, implementation and installation of photovoltaic systems. The core activity thus includes the organization and coordination of self-build projects, the provision of information and resources, as well as the promotion of cooperation between members to increase the number of photovoltaic systems in the region.

Solar & Photovoltaics
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Association Compáz Logo

Association Compáz 

Neuchâtel 1 · Since 2018

The core activity of Compáz is to develop and promote innovative projects that drive technological and social innovation through artistic creation, with the aim of supporting social progress in Europe and beyond. This includes, in particular, the development of projects in the areas of intelligent buildings, rational energy transition and social progress, often in collaboration with European partners and within the framework of EU funding programs such as Horizon 2020.

Sustainability Sector
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Association ConnectSwiss Logo

Association ConnectSwiss 

Morges · Since 2010

The core activity of ConnectSwiss is the implementation of projects aimed at improving living conditions in rural communities in Kenya, particularly in the areas of education, health and access to clean water. The company focuses on supporting communities in implementing sustainable solutions that can be managed in the long term by the communities themselves or by local authorities.

Sustainability Sector
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Association des Amis de Plantons utile Logo

Association des Amis de Plantons utile 

Lutry · Since 2020

The company "Plantons Utile" offers expertise and consulting services in the fields of energy, environment, and sustainable development. The core activities include: Energy consulting: Support for optimizing energy consumption and efficiency, Environmental consulting: Expertise in urban greening, biodiversity, and sustainable development, Sustainable development: Support for implementing projects that protect the environment and promote sustainable development. The company also supports international projects, such as reforestation and promoting sustainable agriculture in developing countries.

Sustainability Sector
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Association ECOTECHSY, Pôle suisse d'Ecotechnologies, développement durable et génération d'emploi Logo

Association ECOTECHSY, Pôle suisse d'Ecotechnologies, développement durable et génération d'emploi 

Chêne-Bourg · Since 2006

The core activity of ECOTECHSY is the development and implementation of projects in the field of sustainable development, environmental protection, and renewable energy. Specifically, this includes: * Developing solutions for optimizing resource use and reducing greenhouse gas emissions * Promoting renewable energy and developing technologies for sustainable energy supply * Preserving biodiversity through projects protecting ecosystems and endangered species * Implementing projects in various countries, such as in Africa and Colombia, to achieve the Sustainable Development Goals (SDGs) In particular, the company focuses on developing solutions for the following areas: * Access to clean water and sanitation * Access to sustainable energy * Preservation of marine biodiversity * Reduction of poverty and promotion of sustainable development The company sees itself as a partner for a sustainable future and aims to contribute to achieving the Sustainable Development Goals through its activities.

NGOs & NPOsSustainability Sector
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Association fribourgeoise des agriculteurs pratiquant une agriculture respectueuse de l'environnement et des animaux (AFAPI) Logo

Association fribourgeoise des agriculteurs pratiquant une agriculture respectueuse de l'environnement et des animaux (AFAPI) 

Posieux · Since 1998

The core activity of AFAPI - FIPO is the implementation of inspections and controls in the field of agriculture, particularly with regard to compliance with environmental and animal welfare standards. The company offers services such as the inspection of agricultural farms, the control of production processes and the certification of products. The goal is to ensure compliance with quality and environmental standards in agriculture and to provide transparency and security to farmers and consumers.

Sustainability Sector
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Association Jardin-Forêt Suisse (AJFS) Logo

Association Jardin-Forêt Suisse (AJFS) 

Coppet · Since 2024

The core activity of the company 'Jardin-Forêt Suisse' is the promotion and support of agroforestry, syntropic agriculture and sustainable gardening and forestry. The company offers services such as consulting, education, workshops and volunteer projects to support people in implementing sustainable projects. It also promotes the dissemination of knowledge and experience in the field of agroforestry and syntropic agriculture through blog posts, conferences and other events.

Sustainability Sector
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Association l'Ecurie des Vues Logo

Association l'Ecurie des Vues 

Coppet · Since 2011

The core activity of the company "Ecurie des Vues" consists of carrying out waste and recyclable materials collections with horse-drawn carriages in various municipalities (Commugny, Coppet, Founex and Tannay). The company also offers the possibility to become a member or make donations to support its activities.

Waste Management Industry
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Association Printemps d'abeilles Logo

Association Printemps d'abeilles 

Geneva · Since 2021

The core activity of the company "Printemps d'abeilles" is the protection and promotion of bees and other pollinators in Switzerland. To this end, the company offers various services, including: * The installation and maintenance of beehives on company premises or in public spaces * The organization of activities and workshops for companies, schools and private individuals to raise awareness of the importance of bees and other pollinators * The sale of bee products, such as honey, and other items related to beekeeping * The support of environmental protection projects and the promotion of sustainable practices in agriculture and horticulture. The company also works with partners to promote the diversity of plants and animals in Switzerland and to educate the public about the importance of bees and other pollinators.

Sustainability Sector
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Association RACINES Logo

Association RACINES 

Gimel · Since 2022

The core activity of the company 'Racines' consists of organizing and implementing activities aimed at supporting people, particularly those benefiting from social assistance or disability insurance or with a migration background, in promoting their social integration and self-discovery through work in a garden and participation in a collective project. This is achieved through the maintenance of a garden, the promotion of biodiversity, and collaborative work in a safe and dynamic environment.

Sustainability Sector
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Association Resonantz Logo

Association Resonantz 

Fribourg · Since 2022

Sustainability Sector
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Association Sun-Power (ASP) Logo

Association Sun-Power (ASP) 

Bernex · Since 2007

The core activity of Sun-Power is the promotion and implementation of projects for the use of solar energy, in particular through the construction of photovoltaic systems on rented roofs, in order to enable broad participation in renewable energy production.

NGOs & NPOsSolar & Photovoltaics
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AS sol GmbH Logo

AS sol GmbH 

Wolfwil · Since 2024

AS sol GmbH is an energy consultancy that plans and installs photovoltaic systems and provides excavator rental services. The company also offers advisory services on energy efficiency.

Rental of Machinery & EquipmentTechnical Consulting & EngineeringSolar & Photovoltaics
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ASS Sustainability Solutions SA Logo

ASS Sustainability Solutions SA 

Geneva · Since 2023

ASS Sustainability Solutions SA is a consultancy for sustainable finance and carbon neutrality services that connects investors with sustainable development projects and provides sustainable investment strategies and impact monitoring. Its services include structuring and issuance of sustainable financial instruments (e.g. green and sustainability bonds), carbon footprint assessments, GHG reduction planning, and carbon credit development and trading.

Sustainability Sector
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ASTE Group Swiss AG Logo

ASTE Group Swiss AG 

Stans · Since 2012

The core activity of Aste Group is the development, manufacturing and marketing of products for renewable energy, particularly batteries, solar modules and other innovative solutions for sustainable energy supply.

Solar & Photovoltaics
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AST Eissport- und Solaranlagenbau AG Logo

AST Eissport- und Solaranlagenbau AG 

Herisau · Since 1991

The core activity of AST Eis- und Solartechnik GmbH is the planning, development and realization of ice rink and solar technologies, including the manufacture and distribution of ice rinks (mobile and stationary), solar systems, artificial turf heating systems, outdoor pool heating systems and heat pumps. The company also offers solutions for ice hockey, inline hockey and recreational facilities and has a comprehensive portfolio of products and services in this area.

Solar & Photovoltaics
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ASTOG-Energy GmbH Logo

ASTOG-Energy GmbH 

Appenzell · Since 2022

The core activity of ASTOG-Energy GmbH is the production of Sustainable Aviation Fuel (SAF) through the conversion of municipal solid waste (MSW) into an environmentally friendly and economically sustainable aircraft fuel.

Sustainability Sector
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ASTRONERGY SWITZERLAND GmbH Logo

ASTRONERGY SWITZERLAND GmbH 

Wollerau · Since 2024

ASTRONERGY SWITZERLAND GmbH is a photovoltaic company specializing in the development, manufacture and sale of high-efficiency crystalline silicon solar cells and modules. It supplies monofacial and bifacial ASTRO-series modules for utility-scale, commercial/industrial and residential installations and provides related product support and services.

Construction & Project ManagementSolar & PhotovoltaicsElectrical Industry
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Astrostrom GmbH Logo

Astrostrom GmbH 

Kaltenbach · Since 2005

The core activity of Astrostrom GmbH is the development and promotion of clean and inexhaustible energy from space, particularly through the use of extraterrestrial resources and advanced robotics technology. The company acts as a think tank and focuses on promoting the economic, technological and cultural dimensions of space-based energy generation.

Research & DevelopmentSolar & Photovoltaics
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Ate GmbH Logo

Ate GmbH 

Grossaffoltern · Since 2022

The core activity of Ate GmbH is the implementation of validations, verifications and certifications in the areas of quality management, environmental management and occupational health and safety management. This includes in particular: certifications according to international standards such as ISO 9001, ISO 14001 and ISO 45001; validations and verifications for life cycle assessments according to ISO 14040ff; conducting operational checks in the automotive and transport industry; checks in the areas of wastewater, waste disposal and storage of water-polluting liquids; and the awarding of environmental labels and accreditations. The company offers these services to promote the environmental performance, quality performance and safety and health performance of private and public organizations.

Technical Consulting & EngineeringTesting & Inspection CentersSustainability Sector
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Atelier 11a - Jérôme Gremaud biologiste Logo

Atelier 11a - Jérôme Gremaud biologiste 

Bulle · Since 2020

The core activity of Atelier-11a is the application of ecology, specifically through the work of a biologist.

Sustainability Sector
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Atelier für ganzheitliches Bauen, Inh. Silvia Neidhart Logo

Atelier für ganzheitliches Bauen, Inh. Silvia Neidhart 

Baar · Since 2021

The core activity of Atelier Neidhart is the holistic consulting and planning for sustainable building, energy efficiency and building renovation, including building biology and ecological aspects, Feng Shui as well as specialized construction consulting, architectural and renovation planning, and construction supervision.

Sustainability Sector
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atelier salto Mathieu Pochon Logo

atelier salto Mathieu Pochon 

Lausanne · Since 2021

The core activity of the company "atelier salto" is consulting and research in the field of territorial ecology, particularly in the Swiss Romandy region. The company focuses on examining the relationships between people and territory and offers services in the areas of environmental planning, urban ecology, and territorial development.

Sustainability Sector
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Atina-Kanal GmbH, Zweigniederlassung Zürich Logo

Atina-Kanal GmbH, Zweigniederlassung Zürich 

Zurich · Since 2019

Atina-Kanal GmbH, Zweigniederlassung Zürich provides sewer and drain cleaning services with a focus on maintenance and inspection of sewage systems. Services listed on the website include pipe and drain cleaning, sewer maintenance, shaft emptying, CCTV sewer inspection, suction works, pump shaft and sludge-collector services, disposal and technical consultation.

Waste Management Industry
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Atina-Kanal GmbH Logo

Atina-Kanal GmbH 

Dottikon · Since 2005

Atina-Kanal GmbH provides sewer and pipe cleaning services, including maintenance, manhole emptying and CCTV inspection of pipelines. The company also performs suction and disposal operations, services pump sumps, sludge collectors and drainage lines, and offers advisory support for wastewater systems.

Waste Management Industry
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Atlas Agro Holding AG Logo

Atlas Agro Holding AG 

Baar · Since 2020

The core activity of Atlas Agro is the development and production of environmentally friendly fertilizers, particularly nitrogen fertilizers with low carbon emissions. The company focuses on the production of green fertilizers and offers solutions for sustainable agriculture.

Sustainability Sector
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Atlas Sensing Labs GmbH Logo

Atlas Sensing Labs GmbH 

Basel · Since 2017

The core activity of Atlas Sensing Labs is the development and provision of solutions for monitoring and improving air quality, particularly with regard to human health. This includes the development of systems and services for measuring and controlling air quality, consulting and research in the field of air quality, as well as the development of methods and tools for exposure science. The company focuses specifically on improving indoor air quality and reducing health risks due to air pollution.

Sustainability Sector
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Atra Naturschutz GmbH Logo

Atra Naturschutz GmbH 

Bern · Since 2019

The core activity of Atra Naturschutz GmbH is the implementation of technical field surveys and ecological consulting, particularly in the areas of nature conservation projects, statistical analyses, field excursions, habitat maintenance, planning of enhancement and management measures, as well as consulting on nature conservation issues.

Sustainability Sector
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Attitude Solaire Sàrl Logo

Attitude Solaire Sàrl 

Geneva · Since 2024

The core activity of Attitude Solaire SARL is the planning, implementation and monitoring of photovoltaic projects, particularly in the Geneva region, Switzerland. The company offers customized solutions for the installation of solar systems, including autoconstruction (self-build) and project implementation support. Attitude Solaire supports customers in selecting and installing suitable materials, applying for subsidies and optimizing energy production.

Solar & Photovoltaics
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Aube-N Sàrl Logo

Aube-N Sàrl 

Aubonne · Since 2013

The core activity of Aube-N Sàrl is to advise and support companies, property owners and municipalities in optimizing their energy efficiency and reducing their environmental impact. This includes in particular: energy audits and consulting, renovation and rehabilitation of buildings, creation of energy and environmental balance sheets and reports, application for subsidies and funding for energy efficiency measures, consulting for the implementation of Cleantech solutions, implementation of CECB and Minergie certifications, and creation of IDC reports (Indice de Dépense de Chaleur). The company supports its customers in developing strategies to reduce their energy costs and environmental impact, and helps them to make their investments in energy efficiency measures profitable.

Sustainability Sector
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Audito AG Logo

Audito AG 

Lucerne · Since 2014

The core activity of Audito AG is the performance of periodic inspections and safety tests for electrical installations, particularly photovoltaic systems, as well as the creation of expert reports and the assumption of final inspections and independent acceptance tests. This also includes lightning protection inspections and verification that electrical installations meet all standards and regulations.

Solar & Photovoltaics
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Aurinko Energy AG Logo

Aurinko Energy AG 

Brig · Since 2023

The core activity of Aurinko Energy is the targeted promotion and expansion of photovoltaic systems on the roofs of small and medium-sized enterprises (SMEs) in Switzerland.

Solar & Photovoltaics
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Auto Energie Sàrl Logo

Auto Energie Sàrl 

Ballaigues · Since 2023

The core activity of Auto Energie Sarl is the collection and sale of used cooking oils, which are then converted into biodiesel. The company offers a service where it collects used cooking oils from customers in Switzerland and then forwards them to partner companies that convert them into biodiesel.

Waste Management Industry
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Autoverwertung Müller AG Logo

Autoverwertung Müller AG 

Zell Lu · Since 2021

The core activity of Autoverwertung Müller AG is the recycling of vehicles and their components, particularly batteries and high-voltage vehicles. This includes specific services such as battery and accumulator recycling, transportation of lithium batteries and electric vehicles, battery disassembly, analysis of batteries and electric vehicles, as well as a towing service.

Waste Management Industry
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Avalgo Sàrl Logo

Avalgo Sàrl 

Bavois · Since 2016

The core activity of Avalgo Sàrl is the development and provision of solutions for the efficient and sustainable removal, collection and utilization of algae in water bodies, particularly in Switzerland and internationally. This includes the development and deployment of specialized boats such as the "Pléco", which enable selective removal of algae, as well as the subsequent utilization of the collected algae in various forms, such as fertilizer or insulation material.

Sustainability Sector
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avanca Energy AG Logo

avanca Energy AG 

Zurich · Since 2022

avanca Energy AG consolidates processes for the development and supply of clean and advanced fuels and for operating the filling stations of its subsidiaries. The company develops solutions for decarbonising heavy goods transport and collaborates closely with avanca Logistics AG; related entities include Alternoil GmbH and GREEEN Solutions GmbH.

Sustainability Sector
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avanca Logistics AG Logo

avanca Logistics AG 

Zurich · Since 2022

The company's core activity is the conception and implementation of innovative energy and logistics solutions, particularly in the field of alternative fuels, advanced drive technologies and sustainable logistics, with the aim of making heavy-duty transport climate-neutral.

Sustainability Sector
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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.