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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,219 companies indexed · Last updated: today
DirectoryEnergy & Environment

Energy & Environment

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IndustryEnergy & Environment
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Matching companies

9'014 companies found

water impulse GmbH Logo

water impulse GmbH 

Basel · Since 2019

The core activity of the company 'water impulse' is the development and marketing of technologies and products based on the rhythmic impulse of water to improve its quality and health promotion. This includes in particular the manufacture and distribution of devices such as the 'Oloid', which is used as a mixing and aeration device in various fields of application, as well as the provision of consulting and support services for projects in the field of water treatment and purification.

Sustainability Sector
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Water Technology Solution SA Logo

Water Technology Solution SA 

Puidoux · Since 2005

The core activity of Water Technology Solution SA is the development, manufacture and marketing of systems for water supply, wastewater disposal and treatment, particularly cast iron pipes and connections for the construction and water sectors.

Water SupplyMetal Industry
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watt elec jura sa Logo

watt elec jura sa 

Porrentruy · Since 2023

watt elec jura sa is an electrical services company that designs, installs and services electrical and energy systems. Its offerings include high- and low-voltage installations, photovoltaic systems, e-mobility charging solutions, project studies and planning, and maintenance contracts with a focus on energy optimization.

Electrical Planning & InstallationSolar & Photovoltaics
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Wattimmo SA Logo

Wattimmo SA 

Les Acacias · Since 2023

The company wattimmo.com is an online real estate portal that enables users to search, view and evaluate properties. The core activity of the company is to provide an online platform for the real estate market.

Technical Consulting & EngineeringEnergy Suppliers
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wattss AG Logo

wattss AG 

Frauenfeld · Since 2024

wattss AG designs, plans and installs modular battery storage systems and energy management solutions for commercial and industrial customers. Its portfolio includes Pixii‑based systems and product platforms such as PowerShaper and PowerBase, complemented by services from feasibility studies and financing to commissioning and after‑sales support. Common applications include peak shaving, PV+storage, backup power, EV charging and load management.

Technical Consulting & EngineeringEnergy Suppliers
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WaVeritas AG Logo

WaVeritas AG 

Zurich · Since 2020

The core activity of WaVeritas is to provide services in the field of sustainable investments and ESG management (Environmental, Social and Governance). This includes in particular: conducting qualitative and quantitative research activities in the ESG field, developing strategies and processes for sustainable investments, integrating ESG criteria into customers' investment decisions, creating ESG ratings and conducting due diligence reviews, providing solutions for compliance with ESG regulations and guidelines, supporting customers in managing ESG risks and opportunities, and developing impact investing strategies and identifying investment opportunities in the field of sustainable investments.

Management ConsultingSustainability Sector
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WeatherXM AG Logo

WeatherXM AG 

Zug · Since 2022

The company develops and operates a global network of weather stations driven by the combination of IoT technology, Web3, and an active community of station owners. The company's core activity is the collection and provision of weather data for various industries such as insurance, agriculture, energy, and transportation, to support them in emergency preparedness, environmental monitoring, and climate adaptation.

Sustainability Sector
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Weber Advisory Logo

Weber Advisory 

Solduno · Since 2015

Weber Advisory primarily focuses on facilitating investment opportunities in the field of green energy. They connect investors with asset managers and investment companies specializing in green energy projects. The goal is to enable investments that not only generate high returns but also contribute to reducing CO2 emissions and protecting the environment.

Sustainability Sector
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Weber Clay GmbH Logo

Weber Clay GmbH 

Bünzen · Since 2022

The core activity of Weber Clay GmbH includes land cleaning services, specifically: vacuuming waste, leaf blowing, crane work, land cleaning after major events such as festivals and events, removal of small trees and telephone poles, root stock milling and tree care. The company thus offers a wide range of services in the field of land cleaning and maintenance, particularly in connection with major events and land maintenance.

Waste Management Industry
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wega & sunergy gmbh Logo

wega & sunergy gmbh 

Diepoldsau · Since 2006

wega & sunergy gmbh provides project development, engineering, strategic consulting and project implementation for wind and photovoltaic projects, with services including site potential analyses, wind measurements (mast and LIDAR), yield assessments, permitting support, environmental impact studies and operation of solar partnership installations.

Technical Consulting & EngineeringSolar & Photovoltaics
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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.