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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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Matching companies

9'016 companies found

Moser - Entgratungs AG Logo

Moser - Entgratungs AG 

Thörigen · Since 1983

Waste Management Industry
View profile3(1)
MPP BAUSOL GmbH Logo

MPP BAUSOL GmbH 

Emmenbrücke · Since 2012

MPP BAUSOL GmbH designs and installs solar systems and also carries out building alterations, renovations and refurbishments. Services include on-site consultation, detailed planning, liaising with authorities, installation, and maintenance; client participation to reduce costs is offered where appropriate.

Solar & Photovoltaics
View profile5(1)
Mütec GmbH Logo

Mütec GmbH 

Götighofen · Since 2003

The core activity of Mütec GmbH encompasses two main areas: 1. Photovoltaics: This involves the planning, installation, and maintenance of solar systems for generating electricity from sunlight. 2. Pipeline construction: This area includes the planning, installation, and maintenance of pipelines for various applications, such as water, gas, or heating systems. Additionally, the company also offers services in the areas of energy storage, heat pumps, electromobility, plant construction, and welding technology.

Solar & Photovoltaics
View profile4(1)
NatureConsult GmbH Logo

NatureConsult GmbH 

Wahlendorf · Since 2015

The core activity of NatureConsult is consulting and research in the fields of environmental protection, biodiversity and sustainability. The company prepares expert opinions, reports and publications for organizations and institutions, such as the Federal Office for the Environment, and supports the development of strategies and policies for environmental protection and biodiversity.

Sustainability Sector
View profile5(1)
Naturplan AG Logo

Naturplan AG 

Zurich · Since 2020

Technical Consulting & EngineeringSustainability Sector
View profile5(1)
New Energy Systems GmbH Logo

New Energy Systems GmbH 

Rheinfelden · Since 2024

The core activity of New Energy Systems GmbH is the planning, development and implementation of innovative energy systems, particularly in the field of renewable energies, including heat pumps, heating systems, photovoltaic systems, cooling and air conditioning systems.

Solar & Photovoltaics
View profile5(1)
Nice & Green SA Logo

Nice & Green SA 

Nyon · Since 2009

Nice & Green SA is a privately held Swiss investment firm that provides bespoke funding and divestment solutions for businesses in the European market. It uses its own balance sheet to bridge funding gaps and supports cashflow and balance-sheet improvements, debt restructuring, R&D, M&A and business development financing.

Sustainability Sector
View profile5(1)
Obwegeser Group AG Logo

Obwegeser Group AG 

Diepoldsau · Since 2019

The core activity of REWIN Austria GmbH is the development and distribution of products and solutions for recycling and hygiene in various industries, particularly in gastronomy, hotels, nursing and retirement homes, canteens, catering and facility management. The products include, among others, the "bioBoy", a solution for the disposal of organic waste, and the "Mr.Fill", a self-compacting solar waste bin. The company positions itself as a partner for environmentally friendly and hygienic waste disposal.

Waste Management Industry
View profile5(1)
Ochsner & Partner, Architekturbüro AG Logo

Ochsner & Partner, Architekturbüro AG 

Neunkirch · Since 1994

The core activity of Ochsner & Partner Architekturbüro AG is the planning and realization of construction projects, particularly in the fields of architecture and construction. The company offers services such as architecture, interior design, and real estate management, and has specialized in the planning and implementation of various construction projects, including kindergartens, residential buildings, municipal administrations, banks, and industrial buildings.

Solar & Photovoltaics
View profile5(1)
Odermatt + Sicher AG Logo

Odermatt + Sicher AG 

Stans · Since 1970

Odermatt + Sicher AG is a service company specializing in the planning and implementation of intelligent solutions in the fields of electricity, telecommunications, photovoltaics, and lighting. The company's core activity includes the installation, maintenance, and repair of electrical systems, telecommunications systems, photovoltaic systems, and lighting systems for private, commercial, industrial, and railway facilities.

Solar & Photovoltaics
View profile5(1)
oekoskop AG Logo

oekoskop AG 

Basel · Since 2001

oekoskop is a consulting firm for nature and landscape, specializing in species and habitat conservation, agriculture and nature conservation, settlement and landscape, as well as habitat maintenance. The company's core activity is the planning, implementation and accompaniment of projects in the field of nature and landscape planning, including the marketing and communication of projects. The company offers its services to the federal government, cantons, municipalities and organizations and is active nationwide in Switzerland.

Sustainability Sector
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OZONOS Schweiz GmbH Logo

OZONOS Schweiz GmbH 

Weiningen Zh · Since 2018

The core activity of OZONOS Schweiz GmbH is the development, manufacture and marketing of products that contribute to improving air quality in various application areas, such as in the kitchen, bathroom and living areas, in hotels and restaurants, in medicine and care, in the sleep and allergy sector, in sports, leisure and transport, in schools and kindergartens, as well as in offices. The products include, among others, air purifiers, such as the OZONOS AC-I, as well as luminaires, such as the floor lamp "Hailey" and the ceiling lamp "Stella".

Sustainability Sector
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Pamos AG Logo

Pamos AG 

Birr · Since 2008

The core activity of PAMOS AG is the environmentally friendly disposal and recycling of metals, devices and special waste. This includes the collection and transportation of materials with their own vehicles and containers, the analysis and separation of metals, as well as the professional disposal in their own recycling center. The company offers its services to both industrial, construction and commercial enterprises, as well as to private households.

Waste Management Industry
View profile5(1)
Paul Kozel & Partner GmbH Logo

Paul Kozel & Partner GmbH 

Hirzel · Since 2005

Paul Kozel & Partner GmbH provides installation, renovation and maintenance services for heating systems, oil‑fired boilers, solar installations and heat pumps, including boiler inspection, descaling and a 24‑hour emergency (on‑call) service.

Solar & Photovoltaics
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PG Solar GmbH Logo

PG Solar GmbH 

Pfäffikon Sz · Since 2021

The core activity of PG Solar GmbH is the planning, consulting and implementation of photovoltaic systems for private households and companies in Switzerland, with the goal of promoting energy independence through renewable energies. Specific services include the installation of solar systems on roofs, the implementation of battery storage systems and the construction of charging stations for electric vehicles.

Solar & Photovoltaics
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Phoster GmbH Logo

Phoster GmbH 

Lenzburg · Since 2014

The core activity of Phoster GmbH is consulting and implementing biodiversity oases, aquaponics systems, urban gardening and eco-technologies to improve the water quality of water bodies. The company offers products and services to create thriving habitats for humans and nature, including floating islands, raised beds and garden shops.

Technical Consulting & EngineeringSustainability Sector
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photrack AG Logo

photrack AG 

Zurich · Since 2012

The core activity of photrack AG is the development and provision of non-invasive, scalable solutions for monitoring water resources, including water quantity and quality, with the aim of promoting effective water management and sustainability.

Sustainability Sector
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Planair SA Logo

Planair SA 

Martigny · Since 2021

Planair SA is an engineering and consulting firm focused on energy and climate transition, providing independent advice and planning solutions for sustainable and economically viable energy systems. Its services include work on sustainable buildings, efficient industrial processes, resilient territorial energy systems and professional training.

Solar & Photovoltaics
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Planair SA Logo

Planair SA 

Givisiez · Since 2015

Planair SA is an engineering firm for the energy transition that advises businesses, public authorities and private clients on energy and climate transition and provides sustainable, economically viable solutions. Its services include sustainable buildings, industrial efficiency, territorial energy systems and professional training.

Solar & Photovoltaics
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Planair SA Logo

Planair SA 

La Sagne Ne · Since 2002

Planair SA is an engineering firm focused on the energy transition, providing consulting, engineering and training services to support energy-related projects. Its activities cover sustainable buildings, efficient industrial processes and resilient territory-scale energy systems, and it supports clients throughout the project lifecycle.

Solar & Photovoltaics
View profile5(1)
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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.