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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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IndustryEnergy & Environment
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9'016 companies found

Hydroexperts GmbH Logo

Hydroexperts GmbH 

Basel · Since 2023

Hydroexperts GmbH provides technical assessments for drinking water suppliers and advises on reservoirs, pumping stations, water hammer and network optimisation.

Technical Consulting & EngineeringWater Supply
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HYDRO Exploitation SA Logo

HYDRO Exploitation SA 

Sion · Since 2002

HYDRO Exploitation SA provides operation and maintenance services for hydroelectric installations. Its activities include engineering studies, mechanical rehabilitation and workshop manufacturing, automation and control systems, measurement and inspection services, and other specialized maintenance support.

Energy Suppliers
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HYDRO-SOI SA Logo

HYDRO-SOI SA 

Val-D'Illiez · Since 2005

The core activity of the company "Hydro-Soi" is the generation and distribution of electricity.

Energy Suppliers
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Hydros Sàrl Logo

Hydros Sàrl 

Arzier-Le Muids · Since 2022

The core activity of Hydros is the development and marketing of solutions for the prevention of water pollution and the promotion of sustainable water management. In particular, the company offers products and services aimed at infiltrating and filtering rainwater to reduce the pollution of water bodies by hydrophobic substances. The products include permeable coatings and textile solutions specifically designed to filter and clean water.

Sustainability Sector
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HydroTerra Sàrl Logo

HydroTerra Sàrl 

Fenin · Since 2021

The core activity of HydroTerra Sàrl consists in providing environmental consulting services, particularly in the following areas: Environmental impact assessments (Notice d'impact sur l'environnement, NIE, and Etude d'impact sur l'environnement, EIE), Environmental monitoring during the implementation phase (Suivi environnemental en phase de réalisation, SER), Remediation of contaminated sites (Site pollué, site contaminé, OSites), Waste management (Gestion des déchets, OLED), Soil management (Gestion des sols, OSol), Groundwater management (Eau souterraine, prospection, protection), Surface water management (Eau de surface, eau de chantier), and Compensation measures for nature and landscape (Mesure de compensation, nature, paysage). The company thus offers comprehensive consulting services in the field of environmental protection and management.

Sustainability Sector
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Hypercube SA Logo

Hypercube SA 

Lugano · Since 2023

Hypercube SA operates a digital infrastructure that measures and verifies water recovered from alternative sources and issues a WTR (Water Credit) token for each verified cubic metre. The platform supports originators through onboarding and independent audits, enables token issuance, trading and retirement, and records credits on a public blockchain for traceability.

Sustainability Sector
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IBB Wasser AG Logo

IBB Wasser AG 

Brugg Ag · Since 2001

IBB Wasser AG is a utility that supplies drinking water and operates the distribution network. It operates a main pipeline network of nearly 80 km and supplies the municipal area of Brugg (including Schinznach-Bad, Umiken and Lauffohr); water quality is monitored through regular sampling and cantonal testing, and tariffs, terms and customer forms are provided for private and commercial customers.

Water Supply
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ibee swiss renewable energy investments GmbH Logo

ibee swiss renewable energy investments GmbH 

St. Gallen · Since 2014

The core activity of ibee swiss renewable energy investments GmbH is investment, consulting and project development in the field of renewable energies, particularly in solar energy. The company develops, finances and operates photovoltaic systems in Switzerland and internationally, including in Sri Lanka, Burkina Faso and Ghana. It also supports the development of solar irrigation infrastructure and promotes the use of electric vehicles in these countries.

Solar & Photovoltaics
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IBE Institut Bau und Energie AG Logo

IBE Institut Bau und Energie AG 

Bern · Since 1978

The core activity of ibe institut bau+energie ag is the provision of services in the fields of construction and energy, particularly in the areas of: property management, energy and sustainability, Building Information Modeling (BIM), building services engineering, building physics, and fire protection. The company offers interdisciplinary, well-thought-out and innovative solutions for construction and energy projects and has a team of experts with various professional qualifications.

Technical Consulting & EngineeringConstruction & Project ManagementSustainability Sector
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Ibis Dienstleistungen GmbH Logo

Ibis Dienstleistungen GmbH 

Frenkendorf · Since 2022

The core activity of Ibis Dienstleistungen GmbH is the provision of services in the field of sewer and pipe cleaning, including: pipe and sewer cleaning, kitchen drain and general drain cleaning, suction and flushing work. The company offers these services throughout Switzerland and positions itself as an expert in sewer and pipe management.

Waste Management Industry
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IBS Intelligent Battery System GmbH Logo

IBS Intelligent Battery System GmbH 

Thun · Since 2007

IBS Intelligent Battery System GmbH designs, manufactures and sells electronic systems and modules for 12V and 24V mobile power, including dual-battery systems, pure-sine inverters, low-voltage disconnects, portable solar kits and lithium batteries. The company also supplies installation kits, portable power boxes and accessories for 4WD, commercial and emergency vehicles.

Solar & PhotovoltaicsElectrical Industry
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IBW Technik AG Logo

IBW Technik AG 

Wohlen Ag · Since 2001

IBW Technik AG provides electricity, gas and water supply services and related technical services such as network connections, installation inspections, public lighting, leak detection and geoinformation. Its services also include energy consulting, heat contracting (Wärme‑Contracting), installation solutions (including PV systems and e‑mobility) and a 24‑hour emergency service.

Energy Suppliers
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IDREL SA Logo

IDREL SA 

Baar · Since 2010

The core activity of IDREL SA is the production of renewable energy from domestic hydropower through the operation of hydroelectric power plants.

Energy Suppliers
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Idrogen Engiadinais SA Logo

Idrogen Engiadinais SA 

Samedan · Since 2021

The core activity of Idrogen Engiadinais SA is the construction and operation of emission-free and grid-friendly ecosystems around hydrogen in the Engadine region, including the production of hydrogen from renewable energy, the construction of hydrogen refueling stations and the operation of hydrogen ecosystems. The company aims to build a complete hydrogen value chain and infrastructure in the Engadine region.

Energy SuppliersGas Stations
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iFront AG Logo

iFront AG 

Lampenberg · Since 2022

The core activity of iFRONT is the development and implementation of intelligent facade control and building automation systems, aiming to reduce energy costs, decrease CO₂ emissions and promote the use of natural resources.

Sustainability Sector
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IG Appenzeller Naturstrom Genossenschaft Logo

IG Appenzeller Naturstrom Genossenschaft 

Oberegg · Since 2011

The core activity of IG Appenzeller Naturstrom is the production and supply of renewable energy, particularly through the construction and operation of eco-power generation facilities such as photovoltaic, biogas, hydro and wind power plants, with the aim of providing the region with sustainable energy.

Energy Suppliers
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IHS Group GmbH Logo

IHS Group GmbH 

Sursee · Since 2019

The core activity of IHS Group is the implementation and support of projects in the field of sustainability and energy, particularly in the development and implementation of environmentally friendly and economic solutions. This also includes the cleaning and recycling of decommissioned oil cables, as well as the distribution of products and services in the German and Danish markets.

Sustainability Sector
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ILE VERTE Logo

ILE VERTE 

Carouge Ge · Since 2022

The company is a tourist office whose core activity is to provide tourist information and services to facilitate visitors' exploration of the city of La Ciotat and its surroundings. This includes providing information on cultural and natural attractions, activities and events, as well as supporting the planning of stays and booking of accommodations.

Sustainability Sector
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IMION AG Logo

IMION AG 

Susten · Since 2022

The core activity of IMION AG is the generation, transportation and delivery of heat and cold through thermal networks, providing households and businesses with efficiently produced energy.

Energy Suppliers
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Imkerbildung Schweiz GmbH Logo

Imkerbildung Schweiz GmbH 

Appenzell · Since 2017

The company's core activity is the promotion and support of the health of honey bees, as well as the implementation of beekeeper training and education. The company also offers various services and resources for beekeepers and beekeepers, such as courses, workshops, consulting and materials. It is also committed to promoting bee friendliness and environmental protection.

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.