Photovoltaics in
Lausanne

Solstis SA

Since 1996 · 51–100 empl.·4.7(96)

Solstis SA plans and installs photovoltaic systems for households, businesses and public organisations. It also offers battery storage, charging stations, self-consumption optimisation, maintenance and distribution of solar components.

Youdera Group SA

Since 2015 · 11–20 empl.·4.3(128)

Youdera Group SA designs, finances, installs and operates distributed energy systems for businesses and property owners. Its services include solar PV, battery storage, roof renovation, energy supply through power purchase agreements, and monitoring and maintenance of energy assets.

Dadi & Dunkel Energy Sàrl

Since 2002 · 11–20 empl.

Dadi & Dunkel Energy Sàrl is an engineering consultancy in the energy sector. Its services include energy consulting, building energy assessments and optimization, and the planning of heating, ventilation, air-conditioning and solar systems.

Société Coopérative Atelier LTC

Since 2010 · 1–10 empl.

Société Coopérative Atelier LTC is a craft cooperative specialising in solar thermal energy. It designs and installs solar thermal systems for hot water and building heating, as well as hydraulic wood stoves and optimised heating controls.

SoHHytec SA

Since 2020 · 11–20 empl.

SoHHytec SA develops and manufactures systems that use solar energy and water to produce hydrogen, oxygen, electricity and heat. The company designs, installs, operates and maintains installations based on its photoelectrochemical Arb technology.

SwiCETec Swiss Clean Energy Technology SA

Since 2009 · 1–10 empl.

Société coopérative Cellios

Since 2020 · 1–10 empl.

Société coopérative Cellios is a solar energy cooperative that develops photovoltaic projects and finances them through cooperative shares. It installs, maintains and operates photovoltaic systems to produce renewable electricity.

SI-REN SA

Since 2009 · 11–20 empl.·5.0(1)

The core activity of SI-REN SA is the development and production of renewable energy, particularly through the use of solar energy, wind energy, biomass and geothermal energy, with the aim of ensuring the energy supply of the Lausanne region and promoting environmental protection.

HKOWT Suisse SA

Since 2023 · 1–10 empl.

HKOWT Suisse SA is an engineering company working in solar energy and open-source software. Its activities include designing and installing photovoltaic systems, offering energy storage and lighting solutions, and developing software for energy management.

PS Panneaux solaires SA

Since 2023 · 1–10 empl.

PS Panneaux solaires SA plans and delivers photovoltaic installations for private property owners and condominium associations. Its services include turnkey solar projects and energy contracting, including financing, installation and maintenance.

Local Energy SA

Since 2020 · 11–20 empl.·5.0(1)

Local Energy SA develops and manages energy solutions for buildings and construction projects. Its services include planning and implementing photovoltaic systems, thermal energy systems and electric-vehicle charging infrastructure, as well as energy consulting, project coordination and operation of installations.

Solartech concept SA

Since 2024 · 1–10 empl.·5.0(3)

Solartech concept SA plans and installs photovoltaic systems, heat pumps, thermodynamic water heaters and charging stations. The company also provides maintenance and ongoing support for installations.