Energy & Environment

VWS GmbH 

Malters · Since 2013

The core activity of First Tec AG is the development and provision of solutions for roof safety, particularly through the distribution of products such as the "Firstkönig", a type of roof safety system that enables safe work on roofs, whether during the construction phase or for later repair work.

Wagner Haustechnik AG 

Schönenberg Zh · Since 2014

The core activity of Wagner Haustechnik AG encompasses the planning, installation, and maintenance of building technology systems, including: sheet metal work, heating systems, thermal solar systems, photovoltaic systems, sanitary systems, industrial piping, and repair services. The company thus offers a comprehensive range of services in the field of building technology.

Wagner Umweltschutz AG 

Steinach · Since 1978

The core activity of Wagner Umweltschutz AG is the development, manufacture and sale of products and services for environmental protection, particularly for oil and chemical spill response, groundwater remediation, contaminated site remediation and water treatment. This includes, among other things, the manufacture and sale of oil booms, the remediation of damage cases after accidents, the maintenance and servicing of technical installations and pumps, as well as the execution of deployments for the fire department, industry and construction.

Waldhaus Stiftung 

Lützelflüh-Goldbach · Since 1993

The company 'Waldhaus' is a seminar centre that focuses on promoting sustainability, ecology and regenerative culture. It offers spaces for seminars, workshops and events and features a vegetarian self-service restaurant. In addition, the company is involved in various projects, such as promoting ecological agriculture, preserving sources and water cycles, and developing sustainable building technologies.

Waldstudio GmbH 

Wabern · Since 2022

The core activity of Waldstudio GmbH is the provision of services in the field of sustainable development of forests, nature and rural areas. This includes in particular: * Technical projects and mandates for public and private actors in Switzerland and internationally, with a focus on forest management, nature conservation and rural development. * Coaching and consulting in the field of sustainable development, using the forest as a space for reflection and further development. The company thus offers a combination of technical expertise and coaching services to develop sustainable solutions for the development of forests, nature and rural areas together with its customers.

Wald und Klima Ursern 

Andermatt · Since 2021

The core activity of the company 'Wald und Klima Ursern' is the promotion of environmental protection and climate protection through reforestation and CO2 compensation. The company is committed to planting trees and supporting projects that combat climate change. It offers opportunities for donations, memberships and volunteer work to achieve its goals.

Walter Kälin Holzbau AG 

Hinwil · Since 1997

The core activity of Walter Kälin Holzbau AG is timber construction, particularly the new construction, renovation and refurbishment of buildings with wood, as well as the manufacture of wooden frames and the installation of solar systems.

Walter Salzmann GmbH 

Zuoz · Since 1997

The core activity of Walter Salzmann GmbH is the provision of services in the field of roofing and sheet metal work, including the planning, execution and maintenance of roof systems, as well as the installation of photovoltaic systems. Specifically, this includes the areas of: Roofing (pitched roof, flat roof, roof windows, roof coverings, roof renovations), sheet metal work (roof structures, metal roofs, dormer windows, snow retention systems), photovoltaics (planning, installation and maintenance of photovoltaic systems), renovations and refurbishments of roof systems, and sealing and insulation of building envelopes. The company offers these services for all types of roofs and is specialized in meeting the needs of customers in the Upper and Lower Engadine.

Walter Zwald Coffee Buying & Consulting 

Meggen · Since 1999

The core activity of the company 'Coffee Buying & Consulting' is the consulting of coffee roasters and coffee-producing export organizations, as well as the trade and export of coffee, with a focus on the highest coffee quality under fair conditions and considering economic, social and ecological sustainability.

Walther Saalfeld Sourcing und Consulting 

Glarus · Since 2008

The core activity of the company 'Walther Saalfeld Sourcing & Consulting' is the consulting and support of companies in the photovoltaic and solar technology industry, particularly in the planning, setup and optimization of production facilities, as well as in the development of business opportunities in China.

Wandu Energie AG 

Trubschachen · Since 2020

The core activity of Wandu Energie AG is the trading of certificates of origin from renewable energy sources, particularly solar power, in Switzerland.

Wärme Genossenschaft Bern 

Bern · Since 2020

The company's core activity is the planning, implementation and maintenance of projects in the field of renewable energy, particularly heat and solar systems. This includes the conversion of heating systems, the expansion of photovoltaic systems and the installation of heat pumps. The company acts as a general contractor and offers a comprehensive service, from planning and design to execution and maintenance of the systems.

Wärme Lindau AG 

Tagelswangen · Since 1996

Wärme Lindau AG is a subsidiary of EW Lindau AG operating in the heat sector. It operates a district heating network in Tagelswangen and offers connections on request as well as services such as heating cost billing.

Wärme Lyss Nord AG 

Lyss · Since 2015

The core activity of Wärme Lyss Nord AG is the generation and supply of district heating to households, businesses and industry in the Lyss region. The company utilizes waste heat from the drying process of GZM in the Lyss industrial ring and feeds it into the district heating network in the form of hot water, which supplies heat to the connected buildings.

Wärmeverbund AG Flaach 

Flaach · Since 2015

The core activity of Wärmeverbund AG is heat supply, particularly through the operation of heating plants and heat networks, to provide households with regional energy.

Wärmeverbund AG Schaffhausen 

Schaffhausen · Since 2021

E+H Ingenieurbüro für Energie + Haustechnik AG is a specialist in district heating and offers services in the planning, implementation and operational optimization of heat and energy networks. The company's core activity includes consulting and supporting heat suppliers and district heating operators in the planning, implementation and optimization of heat distribution networks and energy centers.

Wärmeverbund Brislach GmbH 

Brislach · Since 2013

The core activity of Wärmeverbund Brislach GmbH is the realization and operation of a wood chip heating plant and a district heating network, providing public and private properties in Brislach with ecological and sustainable heat.

Wärmeverbund Haussener GmbH 

Lanzenhäusern · Since 2011

Wärmeverbund Haussener GmbH operates a wood‑chip heating plant and supplies district heat to residential and commercial properties. The company runs a central heating facility and a distribution network and provides information for customers on connecting to the heat network.

Wärmeverbund Kaltbrunn AG 

Kaltbrunn · Since 2016

Wärmeverbund Lauperswil AG 

Lauperswil · Since 2014

The core activity of Wärmeverbund Lauperswil AG is the generation and distribution of district heating from renewable energy, particularly through the combustion of wood chips from local forests, to supply households and properties in the Lauperswil municipality with heat.