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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

SegenSolar Switzerland GmbH Logo

SegenSolar Switzerland GmbH 

Bern · Since 2023

The core activity of SegenSolar Switzerland GmbH is the wholesale trade of photovoltaic products, particularly solar modules, inverters, storage systems, mounting systems, EV charging stations and accessories. The company offers a wide range of PV products from various manufacturers and supports its customers through a customer portal, personal contacts and various tools.

Solar & Photovoltaics
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Seitz Messtechnik AG Logo

Seitz Messtechnik AG 

Berneck · Since 2017

The core activity of Seitz Messtechnik AG is the planning, installation, maintenance and consulting of measurement and control systems for water and wastewater treatment plants, including surface water, drinking water, flood protection, industry and wastewater treatment plants.

Technical Consulting & EngineeringWater Supply
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Semadeni Umwelt & Nachhaltigkeit Logo

Semadeni Umwelt & Nachhaltigkeit 

Birmensdorf Zh · Since 2022

The company's core activity is environmental consulting and management of environmental projects, particularly in the area of remediation and management of contaminated sites, legacy pollutants and environmental liabilities. The company supports businesses and organizations in implementing sustainability and environmental management, including the development of strategies for energy efficiency, CO2 reduction and circular economy.

Sustainability Sector
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SEMS Engineering GmbH Logo

SEMS Engineering GmbH 

Zurich · Since 2023

The core activity of SEMS Engineering GmbH is the planning and realization of photovoltaic projects, including specialized planning, consulting, engineering, planning and construction of solar systems. The company offers comprehensive services for the development and implementation of solar energy solutions, from concept development to tendering, construction management and maintenance of photovoltaic systems.

Solar & Photovoltaics
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Sensirion Connected Solutions AG Logo

Sensirion Connected Solutions AG 

Stäfa · Since 2021

The company's core activity is the development and provision of sensor-based IoT solutions and services for monitoring emissions in the energy sector, particularly for the oil and gas industry. The company offers solutions that enable customers to reduce their emissions, comply with regulatory requirements, and improve their operational efficiency.

Sustainability Sector
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SENSIT-IPS Service GmbH Logo

SENSIT-IPS Service GmbH 

Malters · Since 2008

The core activity of I.P.S Service GmbH is the planning, installation and maintenance of solar systems, as well as consulting and supporting customers in the implementation of solar energy projects.

Solar & Photovoltaics
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SENSOLTEC GmbH Logo

SENSOLTEC GmbH 

Zermatt · Since 2024

Solar & Photovoltaics
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Sentinel Earth AG Logo

Sentinel Earth AG 

Cham · Since 2024

The core activity of Sentinel Earth is to support organizations in achieving their environmental goals by providing market data, reporting, regulatory advice and tailored environmental products. Additionally, the company invests in climate change mitigation projects, develops them in partnership with others and markets the results to create sustainable solutions.

Sustainability Sector
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Serendip Swiss Venture Sàrl Logo

Serendip Swiss Venture Sàrl 

Lausanne · Since 2024

The core activity of Serendip Swiss Venture is the international trade of high-quality, environmentally friendly produced products, particularly Ceylon vanilla and precious stones, with a focus on sustainable growth and long-term value appreciation.

Sustainability Sector
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SERVICE DES EAUX DU MARALLEY (SEM) Logo

SERVICE DES EAUX DU MARALLEY (SEM) 

Montreux · Since 2015

SERVICE DES EAUX DU MARALLEY (SEM) is a non-profit association that manages and promotes the potable water from the Maralley springs. It partially supplies water from the Maralley and Hautebelle catchments to Montreux's old town, the upper Territet area (Avenue du Midi) and Avenue Florimont, and oversees maintenance, cleaning and self-monitoring of the fountains it owns.

Water Supply
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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.