Solar & Photovoltaics

Solarchraft Berner Oberland GmbH 

Wimmis · Since 2022

The core activity of Solarchraft is the planning, installation and maintenance of photovoltaic systems, charging stations and energy optimizations, including consulting and administration of projects in the field of renewable energies, particularly solar energy.

SOPROGAZ SA 

Aubonne · Since 1936

The core activity of Soprogaz SA is the development and provision of solutions for heating technology and systems, including after-sales service, maintenance and repair of heating installations.

Spenglerei Stratmann 

Basel · Since 2020

The core activity of Spenglerei Stratmann is the provision of services in the field of roofing, particularly in the areas of: sheet metal work and sheet metal specialties, roofing (both pitched and flat roofs), terraces and garden plates, sealing and polybau, solar and photovoltaic systems, and sanitary work. The company also offers services in the areas of roof renovation, demolition and disposal of old roofs, as well as the installation of new roofs.

Steinegger Elektro AG 

Altendorf · Since 1984

The company's core activity includes the planning, implementation, maintenance and upkeep of energy supply systems, including network maintenance, new network construction, construction of transformer stations, maintenance of metering systems, meter control and billing, as well as work on house installations, repairs and customer service.

SyEnergy AG 

Stans · Since 2025

The core activity of SyEnergy is the planning, installation and maintenance of renewable energy systems, in particular: solar systems (photovoltaics), electromobility (charging stations and billing systems), energy management (energy flow management and optimization) and heat pumps. The company also offers consulting, planning and implementation of energy projects as well as maintenance and repair of systems.

Thalmann Haustechnik AG 

Hitzkirch · Since 2011

The core activity of Thalmann Haustechnik AG is the planning and execution of heating, plumbing, solar and ventilation systems for new and renovation projects. This includes in particular the consulting, planning and execution of: heating systems, plumbing installations, solar systems, ventilation systems, and bathroom installations. The company thus offers comprehensive services in the field of building technology.

Toiture Willy Goncerut S.A. 

Gland · Since 1999

The core activity of Toiture Willy Goncerut SA is the insulation and roofing of buildings, particularly external insulation of roofs without interfering with the interior of the houses. The company also offers additional services such as renovation, solar, photovoltaic, roof windows, facades, maintenance, roofing and sheet metal work.

A. Kathriner GmbH 

Stalden (Sarnen) · Since 1996

The company provides services in the field of roofing and sheet metal work, particularly in connection with the installation and maintenance of solar systems. It focuses on sustainable solutions for connecting roofs and solar systems and offers consulting and services for planning and implementing solar projects.

Werner Haustechnik AG 

Rheinau · Since 1994

The core activity of Werner Haustechnik AG includes the planning, execution, maintenance and renovation of sanitary and heating systems, including bathroom conversions and renovations, as well as the management of water supply.

Allenbach AG Bedachungen + Gerüstbau 

Müntschemier · Since 2002

The core activity of Allenbach AG primarily encompasses the areas of roofing work, photovoltaic systems, and façade construction. Specifically, the company offers services such as the construction of pitched roofs, flat roofs, and skylights, as well as the installation of photovoltaic systems and the construction of façades.

Bloom4earth Sàrl 

Chêne-Bougeries · Since 2022

Bloom4Earth is a provider of renewable energy solutions in the Swiss Romande region. The company's core activity consists of the installation and distribution of: solar panels (photovoltaic systems) and heat pumps. Additionally, the company offers consulting and support services for the planning and implementation of renewable energy projects, supporting its customers in their transition to a sustainable and environmentally friendly energy supply.

Briand AG 

Lyss · Since 1990

The core activity of Briand AG is the planning, execution and maintenance of sanitary, heating and solar systems. This includes in particular: sanitary installations and repairs, heating renovations and installations (including wood heating, pellet, district heating, heat pumps, gas heating, oil heating), solar systems for hot water and heating support, bathroom renovations and conversions, planning and realization of sanitary and heating systems, service and maintenance of sanitary, heating and solar systems. The company also offers a sanitary emergency service and supports industrial companies in the planning and execution of compressed air systems and machine cooling networks.

Brüesch AG 

Churwalden · Since 1977

The core activity of Brüesch AG is the planning, installation and maintenance of building technology systems, particularly in the areas of plumbing, heating and photovoltaics. The company offers services such as consulting, planning and installation of sanitary systems, heating systems and ventilation systems, and has an experienced team of skilled professionals, including plumbers, heating engineers and sanitary fitters.

Bucher Heizungen AG 

Bühl B. Aarberg · Since 2011

The core activity of Bucher Heizungen AG is the planning, installation, maintenance and servicing of heating systems, particularly environmentally friendly and cost-effective solutions such as heat pumps, solar systems and wood heating systems. The company offers free consulting and individual solutions for customers in the Biel and Seeland region.

Buchmüller GmbH 

Bischofszell · Since 2004

The core activity of Buchmüller GmbH encompasses the planning, installation, maintenance, and repair of heating, plumbing, and household technology systems, including the delivery and installation of household appliances. The specific activities include: Heating: planning, installation, and service for gas heating systems, oil heating systems, wood-fired heating systems, and alternative heat generation; Plumbing: planning, installation, and repair of plumbing installations and devices, including faucets, boilers, and water softening systems; Household technology: delivery, installation, and maintenance of household appliances such as kitchen electrical appliances, washing machines, and dryers. Additionally, the company offers emergency services for water damage and bathroom renovations.

Chauffage entretien Luis Figueiredo Sàrl 

Etoy · Since 2005

Chauffage entretien Luis Figueiredo Sàrl is a heating services company providing installation, maintenance and repair of heating systems and project studies for renovations. Services include gas, oil and wood/pellet boilers, heat pumps, solar thermal and photovoltaic panels, hot‑water systems, desludging and descaling, and maintenance contracts with a 7‑day emergency service.

Ch. Posch & Partner AG 

Thalwil · Since 2006

The core activity of ELITE Electro-Partner (Ch. Posch & Partner AG) is the provision of electrical installations and related services, including: electrical installations (from simple sockets to complex building automation), photovoltaics, e-mobility, multimedia, building automation, and telephony. The company offers these services to private households and businesses in the Thalwil, Zurich-Wollishofen, and Langnau a./A. regions.

Ellenbroek Hugentobler AG 

Kreuzlingen · Since 2001

Ellenbroek Hugentobler AG is an electrical engineering firm providing services including electrical installations, telematics, fiber-optic (LWL) systems, network construction, building technology, photovoltaics and e-mobility, as well as service, maintenance, planning and inspections.

Ellenbroek Hugentobler AG 

Frauenfeld · Since 1975

Ellenbroek Hugentobler AG is an electrical engineering company offering services such as electrical installations, network construction, telematics, building services, photovoltaics, e‑mobility and service/maintenance. The company also provides planning, consulting and control/security solutions and is part of the Baumann Koelliker Gruppe.

Ellenbroek Hugentobler AG 

Romanshorn · Since 2007

Ellenbroek Hugentobler AG provides electrical engineering services, including electrical installations, telematics, fiber-optic network construction, building services, photovoltaic systems and e-mobility solutions. The company also offers maintenance, planning and consulting, as well as control and security services, and is part of the Baumann Koelliker Gruppe.