ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The first Swiss company directory, built to boost AI visibility.

Product
  • Pricing
  • Directory
  • Industries
Company
  • About
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,173 companies indexed · Last updated: today
DirectoryEnergy & Environment

Energy & Environment

Filters
IndustryEnergy & Environment
Search results

Matching companies

9'016 companies found

crowda Sustainability GmbH Logo

crowda Sustainability GmbH 

Zurich · Since 2020

The core activity of crowda Sustainability GmbH is to support companies in their sustainable transformation and risk minimization. To this end, crowda offers various services, such as identifying sustainability risks, developing strategies for risk minimization, implementing measures to increase sustainability, and providing partners to support the implementation of sustainability goals.

Sustainability Sector
View profile
Crystal NTE SA Logo

Crystal NTE SA 

Penthaz · Since 1999

The core activity of Crystal NTE SA is the development and distribution of products and solutions for the treatment of air and water, as well as for the optimization of energy consumption. Specifically, this includes: air treatment through ionization (Système ionair), electrostatic filters (Filtre électrostatique type FE) and UV radiation (INDU & ZERO); water treatment through vivification (EWO) and decalcification (Narewa); and optimization of energy consumption through kinetic energy (KPP Centrale d'énergie Cinétique) and natural energy sources (MAXiiMUS). The company offers these solutions to various target groups, including companies, technicians, and private individuals.

Sustainability Sector
View profile
C. Savary Sàrl Logo

C. Savary Sàrl 

Sâles (Gruyère) · Since 2001

The company C. Savary Sàrl provides services in the fields of heating, plumbing and solar energy. In particular, it installs, maintains and repairs heating systems, sanitary facilities and solar systems, including the installation of thermal and photovoltaic solar modules.

Solar & Photovoltaics
View profile
CSI Services SA Logo

CSI Services SA 

Givrins · Since 2019

CSI Services SA offers a range of services focused on the real estate and hospitality sectors. The company's core activities include: * Real Estate Management: CSI provides programs for the construction and renovation of properties, including energy-efficient renovations and sustainable solutions. * Hospitality Management: The company supports hotels in optimizing their reservation processes, increasing their profitability, and improving their energy efficiency. * Automation and Digitalization: CSI develops solutions for automating processes in the hospitality industry, such as managing reservations and optimizing rates. * Sustainability and Environmental Protection: The company places a strong emphasis on developing sustainable and environmentally friendly solutions for the real estate and hospitality sectors. Overall, the core activity of CSI Services SA can be described as 'sustainable real estate and hospitality management'.

Sustainability Sector
View profile
CT Umwelt AG Logo

CT Umwelt AG 

Küssnacht Am Rigi · Since 2021

CT Umwelt AG is an operating company for the remediation of the Chüelochtobel site. It is responsible for landfill remediation, stream diversion and the implementation of deposition and environmental requirements.

Waste Management Industry
View profile
Current AG Logo

Current AG 

Zurich · Since 2002

The core activity of Current AG encompasses the development and investment in renewable energy projects, particularly in the field of solar energy and hydrogen technology. The company focuses on accelerating the transition to a more sustainable and CO2-neutral energy future by developing innovative solutions such as high-altitude solar installations, hydrogen generators, and compressors. Additionally, the company is also active in shipping and shipbuilding, acting as a business facilitator and financial arranger.

Solar & Photovoltaics
View profile
Dachplan AG Logo

Dachplan AG 

Horn · Since 2023

Dachplan AG provides roof, facade and solar services, including flat and pitched roofs, ventilated facades, waterproofing, solar installations and roof and facade maintenance. The company offers maintenance plans and a 24‑hour emergency on‑call service.

Specialized Construction ActivitiesRoofingSolar & Photovoltaics
View profile
Dadi & Dunkel Energy Sàrl Logo

Dadi & Dunkel Energy Sàrl 

Lausanne · Since 2002

The company dd-energy primarily focuses on services in the field of energy efficiency and sustainability, particularly in Switzerland and the Romandy region. The core activities include: Consulting services in the areas of energy efficiency, Minergie, and CECB; Engineering services for heating, ventilation, and solar systems; Planning and implementation of solar projects; Collaboration with customers and partners to achieve sustainability goals. The company supports private individuals, businesses, and public institutions in implementing energy efficiency measures and utilizing renewable energy sources.

Solar & Photovoltaics
View profile
Daicos AG Logo

Daicos AG 

Edlibach · Since 2001

The core activity of Daicos AG is the development and implementation of innovative and sustainable concepts and solutions in the areas of recycling, environmental technology, and energy generation. This includes, in particular: the planning, design, and realization of recycling facilities and processes for various materials such as biomass, paper, plastics, metals, and waste; the development and implementation of technologies for energy generation from waste and biomass, such as gasification and combustion; the provision of consulting and engineering services for companies and organizations in the field of environmental technology and recycling; and the development of solutions for reducing CO2 emissions, such as decarbonization of CO2 and the production of CO2-free energy from fossil fuels.

Sustainability Sector
View profile
DAM 10 AG Logo

DAM 10 AG 

Amriswil · Since 2018

The core activity of the company 'there for you' is to support companies in the development and implementation of Corporate Social Responsibility (CSR) projects and sustainable initiatives, particularly in the areas of climate protection, animal welfare, child aid and humanitarian projects. The company provides a platform for companies to coordinate their donation activities, activate employees and support effective and transparent projects.

Sustainability Sector
View profile
Danfoss AG Logo

Danfoss AG 

Frenkendorf · Since 1965

The company operates in the fields of energy efficiency, renewable energies and climate protection. The core activities include the development and implementation of solutions for energy optimization of buildings, particularly multi-family houses, as well as the planning, construction and operation of district heating systems and decentralized systems in the local heating sector. In addition, the company offers consulting and service services for the integration of renewable energies and the increase of energy efficiency in various industries.

Sustainability Sector
View profile
D'Angelo SA Logo

D'Angelo SA 

Quartino · Since 1987

The core activity of D'Angelo SA is the sale and installation of thermosanitary systems, including heating, burners, alternative energy, sanitary technology, ventilation and dehumidification, and air conditioning.

Solar & Photovoltaics
View profile
Daniel Knecht Umweltbüro GmbH Logo

Daniel Knecht Umweltbüro GmbH 

Aesch Bl · Since 2019

The core activity of Daniel Knecht Umweltbüro GmbH is ecological consulting and planning in the fields of nature conservation, environment, and landscape. The specific activities include: conducting natural inventories and environmental impact assessments (EIA), protected area management and biotope protection, species promotion and green space management, invasive species control and water revitalization, status reports for water bodies and networking projects, open space design and vegetation and habitat mapping, monitoring and effectiveness control of environmental projects, and regional seed production and ecological consulting in the planning and implementation of projects. The company thus offers a wide range of services in the field of ecological consulting and nature conservation.

Sustainability Sector
View profile
databaum Sàrl Logo

databaum Sàrl 

Lausanne · Since 2022

The core activity of databaum is the development and provision of a technology for sustainable agriculture, specifically a disease management tool for plant protection. This tool uses self-developed sensors and artificial intelligence to predict, confirm and combat plant diseases, thereby reducing the use of pesticides and increasing farmers' yields.

Sustainability Sector
View profile
Davos Biogas GmbH Logo

Davos Biogas GmbH 

Davos Dorf · Since 2004

The core activity of Duchli Ranch is agriculture, particularly livestock farming (dairy cows, Scottish Highland cattle, fattening pigs) and the operation of a biogas plant. Additionally, the company offers a holiday apartment for rent.

Energy Suppliers
View profile
DC Care AG Logo

DC Care AG 

Wallisellen · Since 2024

The core activity of DC Care AG is the maintenance and care of photovoltaic systems, including commissioning, regular inspections, preventive maintenance, coordination of cleaning work, fault management and support, in order to maximize the efficiency and longevity of the systems and enable customers to achieve optimal results from their investment in renewable energy.

Sustainability Sector
View profile
DCP Energie GmbH Logo

DCP Energie GmbH 

Neftenbach · Since 2020

The core activity of Sunnewind (DCP Energie GmbH) is the planning, consulting and support of customers in the construction of solar systems, both as a turnkey service and for self-construction. The company offers 360° support for solar systems, including consulting, planning and execution, and enables customers to build and operate their own solar system.

Solar & Photovoltaics
View profile
Dealex Anlagenbau GmbH Logo

Dealex Anlagenbau GmbH 

Kreuzlingen · Since 2024

Dealex Anlagenbau GmbH designs and implements systems for fire protection, photovoltaic power and security technology. Services include planning, installation and maintenance of fire detection and aerosol extinguishing systems, intrusion and access control systems, photovoltaic installations, commercial and residential energy storage, and EV charging infrastructure.

Technical Consulting & EngineeringSpecialized Construction InstallationsSolar & Photovoltaics
View profile
Déconstruction D3 SA Logo

Déconstruction D3 SA 

Bottens · Since 2011

The core activity of Déconstruction D3 SA consists of carrying out asbestos removal (désamiantage), deconstruction (safe and environmentally friendly demolition and dismantling work) and decontamination (decontamination and cleaning of polluted sites) in Switzerland, particularly in the Romandy region.

Waste Management Industry
View profile
Deflorin Elektroanlagen GmbH Logo

Deflorin Elektroanlagen GmbH 

Flims Dorf · Since 2007

The core activity of Deflorin Flims GmbH encompasses comprehensive electrical installations, IT services, smart home solutions, photovoltaic systems, computer and telecommunications services, including remote maintenance and VoIP telephony.

Electrical Planning & InstallationSolar & Photovoltaics
View profile
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
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.
Per page
102050
  • 1
  • More pages
  • 159
  • 160
  • 161
  • 162
  • More pages
  • 451
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.