Photovoltaics in
Jona

Lampert + Walker AG

Since 1991 · 11–20 empl.·4.8(12)

Lampert + Walker AG plans, installs and maintains heating and cooling systems for buildings. Its services and products include heat pumps, district heating, natural gas and biogas systems, wood heating and solar installations, as well as consultation and servicing.

A. Winiger Sanitäre Anlagen GmbH

Since 1997 · 11–20 empl.·4.6(10)

The core activity of A. Winiger Sanitäre Anlagen GmbH is the planning, installation, maintenance and repair of sanitary systems in new and renovation projects, for both private homeowners and large customers. This includes, in particular, the creation of sanitary installations, the performance of regular maintenance work and the provision of emergency services. In addition, the company also offers renovation management services, where it coordinates various specialist trades such as painting, tiling, electrical, plastering and masonry.

Elektrizitätswerk Jona-Rapperswil AG

Since 1902 · 51–100 empl.·3.8(24)

The company's core activity is energy supply and services, particularly in the field of electricity supply, as well as providing services in the areas of installation, networks, building technology and energy consulting.

Elektro Möhl AG

Since 2002 · 11–20 empl.·4.3(6)

The core activity of Elektro Möhl AG is the provision of services and solutions in the field of electrical engineering, particularly in the following areas: electrical installations and inspections, photovoltaic systems and storage systems, e-mobility and charging infrastructure, communication systems and smart home solutions, consulting and planning of electrical projects, and maintenance and servicing of electrical systems. The company thus offers a comprehensive range of electrical engineering services for private and business customers.

Ohm Elektro Solar GmbH

Since 2022 · 1–10 empl.

Ohm Elektro Solar GmbH plans and installs photovoltaic systems, including storage solutions and measures to optimise self-consumption. The company also carries out electrical inspections and provides installation, maintenance and fault-repair services for power and low-voltage systems, lighting and networks.

EICHER building systems GmbH

Since 2025 · 1–10 empl.

EICHER building systems GmbH supplies building materials, systems and accessories for the building envelope. The company also provides services related to roofing, façades, waterproofing, insulation, safety and solar energy, including consulting, planning support, feasibility checks, energy analyses and photovoltaic cleaning.

Baumgartner & Stillhard Elektro AG

Since 2026 · 1–10 empl.

Baumgartner & Stillhard Elektro AG plans and installs electrical systems for new builds and renovations, and provides servicing, maintenance, inspections and repairs. Its services include lighting and communications solutions, building automation and smart home systems, as well as photovoltaic and e-mobility solutions.

Alp Energy GmbH

Since 2005 · 1–10 empl.

The core activity of Alp Energy is the planning, consulting, installation and maintenance of solar systems, energy storage systems and electromobility solutions for private and business customers.

trunova ag

Since 2011 · 11–20 empl.

trunova ag provides energy consulting for buildings and supports renovation projects, construction supervision and assessments of building energy use through GEAK certifications. Its services also include photovoltaic systems and solar thermal installations.

Suneco AG

Since 2016 · 1–10 empl.

Suneco AG plans and installs photovoltaic systems and offers solutions for electricity storage and self-consumption. The company advises on energy concepts and building services and provides monitoring and maintenance for photovoltaic systems.