Energy & Environment

Christoffel Sanitär-Heizung AG 

Scuol · Since 2022

The core activity of Christoffel Sanitär-Heizung AG is the execution of sanitary, heating and ventilation work, including consulting and installation of sanitary facilities and ecological heating systems.

CH Trading Suisse GmbH 

Zurich · Since 2016

The core activity of CH Trading Suisse GmbH encompasses the development and implementation of innovative projects in the field of renewable energy and sustainable technologies. This includes, in particular: * The development of electro-kinetic power plants that produce electricity based on the Archimedes principle. * The construction of hydrogen power plants that produce hydrogen through electrolysis and store and utilize it as a clean energy source. * The construction of biogas and biomethane facilities that convert organic waste into renewable energy and simultaneously produce liquid and solid organic and organo-mineral fertilizers. * The development of systems for water production from air, utilizing condensation technologies to convert atmospheric humidity into drinking water. * The promotion of ecological and organic farming methods that are based on natural processes and avoid the use of synthetic pesticides and fertilizers. Overall, the company focuses on the development and implementation of sustainable solutions for the energy and agricultural sectors.

CH Tyre Center GmbH 

Zurich · Since 2014

CH Tyre Center GmbH collects and disposes of end-of-life tyres and trades in used tyres. The company provides collection, logistics and storage for large tyre volumes, arranges pickup by van or lorry, and uses mechanical rather than thermal processes for ecological disposal.

CIEL Solar SA 

Romanel-Sur-Lausanne · Since 2024

The core activity of CIEL Solar SA is the planning, installation and maintenance of solar systems for private, commercial and industrial customers in Switzerland, with the aim of promoting the energy transition and reducing dependence on fossil fuels.

CIGE Sàrl 

Blonay · Since 2013

The core activity of CIGE (Communauté Interdisciplinaire de gestion Environementale) is environmental consulting, design and protection. Specifically, this includes: * Renaturation and maintenance of biotopes, water bodies and landscapes * Environmental consulting and planning for private and public projects * Conducting environmental impact assessments and expert opinions * Maintenance and care of green spaces, trees and shrubs * Removal of invasive plant and animal species * Creation of habitats for native plant and animal species * Consulting and support for the implementation of environmental protection measures The company also offers specialized services such as wetland maintenance, water renaturation and the creation of biodiversity corridors.

Alpenglow AG 

Rüschlikon · Since 2023

The core activity of CINEGREEN AG is the development and distribution of environmentally friendly energy sources for the film industry, particularly quiet and reliable generators that serve as an alternative to conventional, CO2-emitting energy sources. The company offers a range of products, including NXTGEN generators and Salt-E-Dog batteries, specifically designed to meet the needs of film production. The company's goal is to reduce CO2 emissions in the film industry and promote sustainable production.

Cioce AG 

Rorschach · Since 2010

The core activity of CIOCE Gebäudetechnik is the planning, installation, maintenance and servicing of building technology systems, including heating, ventilation, air conditioning, sanitary and electrical installations.

CIPV GmbH 

Zurich · Since 2018

The core activity of CIPV GmbH is the consulting and planning of photovoltaic projects, particularly in the integration of solar energy into urban buildings and urban planning. This includes the development of strategies and market analyses, the planning and optimization of solar power plants, the evaluation of processes and supply chains, as well as the implementation of analyses and expert opinions. CIPV supports companies in introducing photovoltaics into their business field and helps optimize existing solar systems.

Circea SA 

Mies · Since 2024

Circea SA develops and installs systems to capture and purify biogenic CO₂ side‑streams from industrial processes. Services include recovery, dehydration, purification, compression and liquefaction of CO₂ (e.g. from alcoholic fermentation and biogas), plus logistics, consulting and pilot projects to enable reuse and circular value‑chain integration.

Circular Food Solutions Switzerland AG 

Winterthur · Since 2022

The core activity of Circular Food Solutions is to develop and offer innovative solutions for the processing of food side-streams, in order to utilize them as valuable resources in the plant-based meat industry. The company provides technology and consulting services to support companies in converting these by-products into profitable and tasty products.

Circular Hub GmbH 

Zurich · Since 2018

The core activity of the company 'Circular Hub' is to support Swiss companies and organizations in implementing a circular economy, particularly in the construction sector. To this end, the company offers a combination of innovative communication, advocacy and change management services to promote the transition from a linear throwaway economy to a resource-efficient circular economy.

Circulaya GmbH 

Birsfelden · Since 2021

The core activity of Circulaya Consulting is to advise companies in the field of sustainable packaging, particularly in the development and implementation of innovative, circular and environmentally responsible packaging solutions. This includes analyzing and optimizing packaging processes, developing sustainable packaging concepts, and supporting companies in implementing circular economy and eco-design.

CitizenBees SARL 

Neuchâtel · Since 2013

The core activity of CitizenBees is the development and provision of a service for urban beekeeping, which enables the installation and operation of beehives on the roofs of companies and municipalities. This service includes the provision of high-tech beehives equipped with sensors and webcams to monitor bee activity in real-time. Additionally, the company also offers biosurveillance services, where bees are used as environmental samplers to monitor environmental quality.

CJ Solar-Planning GmbH 

Heerbrugg · Since 2022

The core activity of CJ Solar Planning is the specialized planning of solar concepts, particularly the creation of 3D visualizations and project reports for photovoltaic systems, including the consideration of factors such as orientation, roof inclination, roof covering, shading and power consumption.

CKR Solar + Montage GmbH 

Staad Sg · Since 2023

The core activity of CKR Solar + Montage GmbH is the installation and assembly of solar energy systems, as well as the related services in the field of renewable energies.

CKW AG 

Lucerne

CKW AG is an energy and services company that generates electricity, operates grid infrastructure, and provides energy solutions such as photovoltaic systems, battery storage and heat networks. It also supplies building-technology services (heat pumps, charging infrastructure, electrical installations) and ICT services including datacenter, IT security and connectivity for residential and commercial customers.

CLARA Water AG 

Steinmaur · Since 2023

The company develops and distributes a water disinfection system called Clara, which uses electrolysis to produce sodium hypochlorite from salt and electricity to disinfect drinking water in rural areas and healthcare facilities.

Classen GmbH 

Zurich · Since 2022

Classen GmbH provides advisory services to governments, multilateral institutions, NGOs, family offices and corporates on carbon markets and engagement under Article 6 of the Paris Agreement. Its core offerings include policy advisory, business proofing (transactional support and financial modelling for mitigation activities) and practical training with ongoing Q&A support.

Claude Marie Marcuard, géologue EPFZ, expert et consultante 

Leysin · Since 1991

Claude Marie Marcuard, géologue EPFZ, expert et consultante provides independent expert and consultancy services in applied geology, geotechnical engineering, contaminated sites and groundwater. She conducts technical assessments, court expert reports, site investigations, environmental impact reports and environmental monitoring.

Clavisto Technologie GmbH 

Schaffhausen · Since 2010

The core activity of Clavisto is the development and implementation of innovative pyrolysis solutions to combat global climate change. Specifically, this includes: The transformation of waste into valuable resources through pyrolysis technology; The development and implementation of pyrogenic carbon capture systems (PyCCS); The promotion of reforestation and agroforestry projects, particularly in tropical regions; and Supporting customers in achieving their greenhouse gas reduction and removal goals. The company focuses on combating global climate change by reducing greenhouse gases and promoting sustainable solutions.

CleanCarbonConversion Holding AG 

Pfäffikon Sz · Since 2015

The core activity of CleanCarbonConversion AG is the development, manufacture and marketing of UHTH systems (Ultra-High-Temperature-Hydrolysis), which convert waste materials and biomass into clean, energy-rich synthesis gas. The company thus provides a solution for waste disposal and energy generation by converting waste into a valuable resource.

cleanosign GmbH 

Härkingen · Since 2021

The core activity of cleanosign is the cleaning, maintenance and conceptualization of photovoltaic systems in Switzerland. This includes in particular: * Professional cleaning of solar modules to ensure their maximum performance and lifespan. * Periodic control flights using drone technology to monitor the condition of the systems and identify potential problems. * Creation of customized concepts for planning, optimization and life extension of photovoltaic systems. * Thermographic inspections to document the condition of the systems and identify potential problems. The company offers these services to both private and business customers, focusing on promoting a clean and efficient energy future.

Clean Power Synergy AG 

Grosswangen · Since 2018

The core activity of Clean Power Synergy AG is consulting and financing projects in the field of renewable energies, particularly in the areas of photovoltaics, electromobility and energy efficiency. The company also offers contracting services, where it takes over the planning, implementation and financing of energy projects.

Cleantech Businesspark AG 

Deitingen · Since 2015

The core activity of Cleantech Businesspark AG is to provide spaces and infrastructure for founders and companies specializing in applied future technologies, particularly in the cleantech industry. The company operates a startup center and innovation forum that brings together companies and research institutions to promote innovations and sustainable technologies.

Cleantech21 Foundation 

Zurich · Since 2007

The core activity of Cleantech21 Foundation (C21) is to promote environmental protection and sustainability through the development and implementation of Cleantech solutions, policy innovations, and technological advancements. The company focuses on the themes of Sustainable Development, Cleantech, Climate and Biodiversity Crisis, Sustainable Market Economy, Policy Innovation, and Technological Innovation. C21 engages in research, thought leadership, and project development aimed at driving the market for sustainable solutions. The company collaborates with partners to mobilize resources for project development and provides consulting and support services to companies and organizations committed to sustainability and environmental protection. The core activities of C21 include: * Research and development of Cleantech solutions * Policy innovation and lobbying for sustainable policies * Technological innovation and development of new technologies * Project development and implementation in the field of sustainability and environmental protection * Consulting and support services for companies and organizations in the field of sustainability and environmental protection.

Clearex Schweiz AG 

Engelberg · Since 2009

Clearex Schweiz AG provides mobile on-site treatment and dewatering of sludges from separator and retention systems using specialised vehicles with a chemical-physical process that yields water compliant with Swiss discharge rules. The company offers suction and disposal, flushing and recovery, maintenance and inspection of oil and grease separators, CCTV and sewer rehabilitation, leak testing and reporting for clients such as restaurants, industry, service stations, workshops and municipalities.

Clearex Schweiz AG 

Füllinsdorf · Since 2009

Clearex Schweiz AG provides mobile treatment and disposal of liquid wastes and sludges using specialized vehicles and an on‑site physico‑chemical process. The company carries out inspection, cleaning and maintenance of separators (e.g. oil and grease), leak testing, documentation and monitoring, offering disposal and service solutions for hospitality, industry, service stations and public clients.

CLEVAR GmbH 

Sargans · Since 2021

The core activity of CLEVAR GmbH is the planning, consulting and implementation of solar systems and photovoltaic projects, particularly with the aim of optimizing the self-consumption of renewable energy. This also includes the installation of heat inputs and the integration of storage systems to efficiently convert excess solar power into heat.

Climacrux GmbH 

Kastanienbaum · Since 2020

The core activity of Climacrux is the development of products and services aimed at accelerating the path to a sustainable future, particularly through the promotion of carbon removal and the provision of solutions for reducing CO₂ emissions. This includes the development of platforms and services such as Carbon Removed, CO₂ removal API, and Boutique CO₂ removal, which enable individuals, companies, and family offices to reduce their CO₂ emissions and achieve sustainable goals.

Climacy SA 

Bussigny · Since 2022

The core activity of Climacy is the development and implementation of renewable energy solutions, particularly in the field of solar energy. Specifically, the company offers two main products: 1. **Solar Tiles**: A solution that enables existing roofs to be equipped with solar modules to generate electricity and feed it back into the grid. 2. **Heating**: A solution based on heat pumps to heat buildings and contribute to the energy transition. Additionally, Climacy offers a comprehensive solution called **Solar Smart Roof**, which combines insulation, solar energy, and aesthetics, suitable for both private and industrial and agricultural buildings.

Clima Now 

Zurich · Since 2021

The core activity of Clima Now is the promotion of climate protection projects and the support of start-ups that focus on the development of sustainable and environmentally friendly solutions to combat climate change and create a greener future.

Climetech AG 

Fläsch · Since 2022

The core activity of Climetech AG encompasses four main areas: 1. **Industrial Project Management**: The company provides services for planning, controlling, and executing complex industrial projects, focusing on financial efficiency, timely completion, and operational excellence. 2. **Independent Consulting Services**: Climetech AG offers independent consulting services aimed at evaluating and implementing new technologies, developing digitalization strategies, and optimizing resources and processes. 3. **Sustainable Corporate Development**: The company supports clients in reducing their CO2 footprint and integrating technologies compatible with climate-positive goals. 4. **Board Member Expertise**: Climetech AG's founder, Aron Graf, offers his services as a member of corporate boards, focusing on sustainable strategies and technology integration to support companies in achieving their objectives.

CN Commodity SA 

Geneva · Since 2021

CN Commodity SA is the company behind the Carbon Offset Certification label and operates a standardised auditing and certification process for carbon offsetting of commodity transactions, products and services. Services include GHG calculation, independent verification, offsetting via retirement of third‑party certified credits, a digital registry/portal and advisory access to voluntary carbon markets.

CO2 Energie AG 

Baden · Since 2021

The core activity of CO2 Energie AG is the liquefaction and utilization of CO2 generated during biogas production. The company operates a CO2 liquefaction plant, where the separated CO2 is liquefied and made available as an industrial gas for further use. This process enables the conversion of up to 90 percent of the CO2 that would otherwise escape into the atmosphere into a valuable product.

CO2-monitor AG 

Zurich · Since 2008

CO2-monitor AG supports corporations, organisations and local governments in integrating environmental and social sustainability into their core values and operations. Services include employee engagement, leadership-team sustainability coaching, and advisory support for transitioning from reporting to embedded sustainability practices.

COBRI AG 

St. Gallen · Since 2009

The core activity of COBRI AG encompasses two main areas: 1. **Management Consulting**: The company provides consulting services to businesses in the areas of business field development, realignment, succession planning, and generalist tasks. 2. **Energy Consulting**: COBRI offers specialized consulting services for renewable energies, particularly for properties and infrastructures. This includes impulse consulting, concept development for building modernizations, on-site consulting, and tender comparisons.

Colortech AG 

Baar · Since 2000

The core activity of Colortech AG is the development and application of environmentally friendly powder coating solutions for various industries and private customers. The company offers individual solutions for the surface refinement of metal parts, machines, vehicle parts, architectural elements and other products, with a focus on sustainability, corrosion protection, durability and a flawless finish.

COMBA Energies SA 

Arbaz · Since 2009

The core activity of the company is the management and administration of a municipality (Commune d'Arbaz) in the canton of Valais, Switzerland. The activities include, among others: public services such as population control, social services and tax administration; tourism promotion through the Office du Tourisme Anzère; management of public facilities such as schools, libraries and sports facilities; support for local businesses and organizations; and provision of information and services to the population, such as energy supply, transport and mobility.

CommTech CTS SA 

Corminboeuf · Since 2014

The core activity of CommTech CTS SA is the development and implementation of systems for optimizing and regulating energy consumption, particularly in the field of building automation and the renewable energy sector. The company offers solutions for self-consumption, energy storage through accumulation, and the integration of solar energy. The focus is on developing intelligent systems that optimize energy consumption and improve building efficiency.

Composite Recycling SA 

Ecublens Vd · Since 2021

The core activity of Composite Recycling is the development and provision of services and technologies for the recycling of composite materials, particularly glass fiber and carbon fiber composites. This includes conducting recycling tests, audits and industrial calibration studies, providing mobile recycling units for the recycling of composite materials, selling recycled raw materials such as glass fibers and thermolysis oil, as well as consulting and networking services for manufacturers seeking to implement sustainable production processes.

Comunità dei patriziati della Valle di Blenio 

Olivone · Since 2017

The company's core activity is agriculture and alpine farming, particularly the management of alpine pastures and meadows in the mountains, as well as the associated livestock breeding and agriculture.

co/NE gmbh 

Innertkirchen · Since 2022

The core activity of co/NE is to provide services in the field of sustainable development, particularly in the areas of coaching, consulting and co-creation. The company supports organizations and individuals in designing experiences that are geared towards sustainability and accompanies them in their transformation towards a sustainable lifestyle.

CONNEXIS AG 

Basel · Since 1999

The core activity of Connexis Strategy Consultants is to advise and support companies, organizations, and institutions in the areas of sustainability, Corporate Social Responsibility (CSR), and Environmental, Social, and Governance (ESG) aspects. This includes: * Strategic consulting on ESG topics * Implementation of CSR and ESG measures * Transparency and disclosure of ESG data * Impact Investing, Socially Responsible Investing (SRI), and the implementation of the Sustainable Development Goals (SDGs) * Development of sustainability strategies and policies * Consulting on sustainable financing and Green Finance The company supports its clients in integrating sustainability aspects into their business strategy and processes, and helps them improve their sustainability performance.

Conny Wyssen GmbH 

Riehen · Since 2021

The core activity of Conny Wyssen GmbH is sustainable interior design, i.e. the planning and design of interior spaces with consideration for sustainability and environmental compatibility.

Conorti AG 

Haag (Rheintal) · Since 1993

The core activity of Conorti AG is the cultivation of vegetables and fruits for processing, particularly in partnership with over 50 farmers from the Rhine Valley, with the aim of growing high-efficiency and ecological Swiss vegetables.

Consaba GmbH 

Bern · Since 2009

The core activity of Consaba GmbH is to advise and support municipalities in the development and implementation of projects in the areas of energy, environment and sustainable development. In particular, the company supports municipalities in obtaining certification as an energy city, creating energy profiles, guiding principles and action plans for energy and mobility, as well as in developing legislative goals.

conseil3 GmbH 

Basel · Since 2023

The company conseil3 offers consulting services in the field of sustainable development and climate protection. The core activity of the company is to support organizations and companies in developing innovative processes and solutions for a livable and climate-friendly future. This includes, in particular, the conception and implementation of strategies, the promotion of participation and involvement, as well as the development of needs-oriented processes.

Consomd Sàrl 

Neuchâtel · Since 2020

The core activity of Consomd Sàrl is the provision of energy consulting services for private individuals, companies and municipalities. The focus is on analyzing and optimizing energy consumption, particularly in the area of heating, as well as supporting the transition to renewable energies. The company offers personalized consulting, workshops and coaching to help customers reduce their energy consumption costs and improve their environmental balance.

Constantin Solar AG 

Salgesch · Since 2012

Construction durable - J. Crucy 

Bern · Since 2023

The core activity of the company "Construction durable - J. Crucy" is consulting and services for sustainable building, particularly in the areas of: * Diagnostics and monitoring of building pollutants (asbestos, heavy metals, PCB, PAH, etc.) * Indoor air quality (VOC, PM10, etc.) * Ecological building with biological materials (clay, lime, etc.) * Remediation of pollutants * Consulting and support for cantons, municipalities, companies and private individuals in the implementation of sustainable building projects.