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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

Swiss Better Gold Association Logo

Swiss Better Gold Association 

Tannay · Since 2018

The core activity of Swiss Better Gold Association is to promote and support the development of responsible and sustainable supply chains for gold from small and medium-sized mining operations (Artisanal and Small-scale Mining, ASGM). This includes providing technical support, social investments and establishing direct supply chains between the mining operations and the association's members. The goal is to improve the living conditions of mining communities and establish responsible, sustainable and transparent supply chains in the gold sector.

Sustainability Sector
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Swiss Clever Energy AG Logo

Swiss Clever Energy AG 

Bern · Since 2012

The core activity of Swiss Clever Energy AG includes the purchase and sale of its own plots of land, buildings and apartments, as well as the development and implementation of sustainable energy supply models, including decentralized power generation plants and electromobility solutions.

Energy SuppliersSolar & Photovoltaics
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Swiss Climate AG Logo

Swiss Climate AG 

Naters · Since 2021

Swiss Climate AG is a consultancy specialising in CO2 management, sustainability, climate protection projects and energy. Its services include carbon footprinting for companies, products and events, sustainability strategy and reporting, climate project development and financing, training courses, and communication and advisory services for public institutions and businesses.

Sustainability Sector
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Swiss Climate AG Logo

Swiss Climate AG 

Bern · Since 2006

Swiss Climate AG is a consultancy focused on CO₂ management, sustainability management, climate protection projects and energy. The company provides services for businesses, product and event assessments, and public entities, including carbon accounting, advisory on mitigation measures, climate reporting and project development. Its services also include training, communication support and assistance with net‑zero roadmaps.

Sustainability Sector
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Smart City AG Logo

Smart City AG 

Basel · Since 2024

Smart City AG is a company in electrical engineering and energy innovation that develops and implements technologies for smart cities, cyberkinetics and renewable energy. Services include solar and wind energy systems, energy‑efficient data centers, blockchain‑based energy projects and Bitcoin mining, IoT and cyberkinetic solutions, modern agricultural technology, gas power plant modernization, water distillation, waste‑to‑energy systems, BIM and project management for urban infrastructure.

Technical Consulting & EngineeringElectrical Planning & InstallationSolar & Photovoltaics
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SwissEcoSystems GmbH Logo

SwissEcoSystems GmbH 

Bülach · Since 2008

The core activity of SwissEcoSystems GmbH is the planning, development and implementation of projects in the field of renewable energies, particularly photovoltaics (PV), as well as consulting and supporting private individuals, companies and administrations in the sustainable and resource-efficient design of their projects.

Solar & Photovoltaics
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swissEmbedded GmbH Logo

swissEmbedded GmbH 

Nussbaumen Ag · Since 2002

The company is a provider of solar systems and related products and services. The core activities include: * Sales of complete solar systems, solar modules, inverters, storage systems and other related products * Consulting and planning of solar systems for private and commercial customers * Provision of services such as installation, maintenance and repair of solar systems * Sales of storage solutions for solar systems, including the integration of products like the Tesla Powerwall * Provision of additional products and services such as data loggers, monitoring systems and insurance for solar systems.

Solar & Photovoltaics
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Swiss Energie Luzern AG Logo

Swiss Energie Luzern AG 

Lucerne · Since 2022

The core activity of Swiss Energie Luzern AG is the planning, installation and maintenance of photovoltaic systems (PV systems) for companies, in order to support them in the use of renewable energy and the reduction of electricity costs.

Energy SuppliersSolar & Photovoltaics
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SWISS FRESH WATER SA Logo

SWISS FRESH WATER SA 

Romanel-Sur-Lausanne · Since 2008

Swiss Fresh Water develops, manufactures and distributes machines for water treatment and desalination to provide drinking water in regions with limited access to clean water. The machines are robust and designed for use under extreme conditions. The company also offers services such as maintenance, testing and quality assurance to ensure that the produced water meets local health standards.

Water Supply
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Swissgas, Schweizerische Aktiengesellschaft für Erdgas Logo

Swissgas, Schweizerische Aktiengesellschaft für Erdgas 

Zurich · Since 1993

Swissgas, Schweizerische Aktiengesellschaft für Erdgas is a private joint‑stock company that serves as a service platform for regional network companies by operating the high‑pressure gas network and marketing transport capacity. It owns a high‑pressure pipeline network (260 km), manages intake and custody transfer stations, handles nominations and transport coordination (including the KSDL) and markets transit capacity. Its activities include asset management, operation, maintenance and monitoring of pipeline infrastructure and representation in industry forums.

Energy Suppliers
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Swissgas-Speicher Aktiengesellschaft Logo

Swissgas-Speicher Aktiengesellschaft 

Zurich · Since 1980

The core activity of Swissgas AG is the operation and management of natural gas networks, including asset management, transport management and operation of KSDL (concession contracts for Swiss natural gas distribution).

Energy Suppliers
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Swiss Green Gas International AG Logo

Swiss Green Gas International AG 

Dättwil Ag · Since 2020

The core activity of Swiss Green Gas International Ltd. is the development and promotion of green gas and hydrogen as key technologies for the energy transition and decarbonization in Switzerland. This includes in particular the production of green gas and hydrogen from renewable energy sources as well as the development of Power-to-X technologies for converting excess electricity into other forms of energy. The company aims to deploy these technologies in various industrial sectors to contribute to a green economy.

Energy Suppliers
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Swiss Green Incubator Logo

Swiss Green Incubator 

Lugano · Since 2023

The core activity of Swiss Green Incubator is to promote and support projects and companies in the field of natural medicine, sustainable agriculture and bio-building. This includes providing resources, consulting and incubating start-ups that develop products and services in the field of natural medicine, nutrition and sustainable agriculture. The company aims to improve human health and well-being by promoting natural and sustainable solutions.

Sustainability Sector
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Swiss Green Solutions AG Logo

Swiss Green Solutions AG 

Wangen Sz · Since 2022

The core activity of Swiss Green Solutions AG is consulting and solution development in the field of photovoltaics and energy storage, with a focus on sustainable, modular and holistic solutions.

Solar & Photovoltaics
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Swiss Impact Investment Association Logo

Swiss Impact Investment Association 

Zug · Since 2015

The company's core activity is the promotion of Impact Investing, i.e. investing in companies and projects that, in addition to financial returns, also have a positive social or environmental impact. The company serves as a platform for best-practice impact investments and aims to identify and promote investment opportunities with a positive impact. It also hosts conferences and summits to discuss and promote the topic of Impact Investing.

Sustainability Sector
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SWISS INNOVATION POWER SA Logo

SWISS INNOVATION POWER SA 

Geneva · Since 2011

The core activity of Swiss Innovation Power is the promotion of Swiss innovations and the development of international business relationships in the fields of environmental technologies, health services and medical products. The company supports Swiss companies in opening up new markets and promotes trade and cooperation between Swiss companies and international partners.

Sustainability Sector
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Swiss-instasolar Sàrl Logo

Swiss-instasolar Sàrl 

Givisiez · Since 2019

The core activity of Swiss-Instasolar is the planning, installation and maintenance of solar systems, in particular photovoltaic systems, for private and commercial customers.

Solar & Photovoltaics
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Swiss kw GmbH Logo

Swiss kw GmbH 

Ballwil · Since 2024

Swiss kw GmbH is a company specializing in sustainable cleaning and maintenance of solar installations. Services include cleaning of photovoltaic systems, roof inspection and maintenance, and installation of snow guards.

Solar & Photovoltaics
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Swiss Luxra Holding AG Logo

Swiss Luxra Holding AG 

Cham · Since 2024

The core activity of Luxra is the development, manufacture and distribution of photovoltaic products, in particular high-quality solar modules designed for the European market and specifically tailored to meet the specific challenges of the PV industry.

Solar & Photovoltaics
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Swissmycel GmbH Logo

Swissmycel GmbH 

Zurich · Since 2023

The core activity of swissmycel GmbH is the development and distribution of applications based on fungal mycelium to reduce environmental problems. In particular, the company focuses on the following activities: Development and production of biostimulants that improve the resistance of plants and trees and minimize soil erosion. Production of saprophytic fungi for agriculture and private individuals to promote humus formation and biodiversity. Research and development of new fungal products, particularly in the field of mycoremediation and upcycling of organic waste products. Consulting and supporting customers in the application of fungal mycelium in various ecosystems. The company aims to explore and develop the diverse uses of fungi to reduce environmental problems and provide sustainable solutions.

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.