Solar & Photovoltaics in
Lausanne

Solstis SA

Since 1996 · 51–100 empl.·4.7(96)

Solstis SA delivers turnkey solar projects and services for photovoltaic systems. Its offerings include design, installation and commissioning of PV systems, battery storage, charging stations, maintenance and monitoring, and support for permits and subsidy applications.

Dadi & Dunkel Energy Sàrl

Since 2002 · 11–20 empl.

The company dd-energy primarily focuses on services in the field of energy efficiency and sustainability, particularly in Switzerland and the Romandy region. The core activities include: Consulting services in the areas of energy efficiency, Minergie, and CECB; Engineering services for heating, ventilation, and solar systems; Planning and implementation of solar projects; Collaboration with customers and partners to achieve sustainability goals. The company supports private individuals, businesses, and public institutions in implementing energy efficiency measures and utilizing renewable energy sources.

Société Coopérative Atelier LTC

Since 2010 · 1–10 empl.

Société Coopérative Atelier LTC is a cooperative that designs and installs solar thermal systems. Its activities include systems for domestic hot water and heating, as well as hydraulic wood stoves and optimized heating controls.

SoHHytec SA

Since 2020 · 11–20 empl.

The core activity of SoHHytec is the development and provision of sustainable technologies for the production of green hydrogen and renewable energy, particularly for use in various industries such as the chemical industry, space sector and micro-grid provision. The company focuses on the development of patented technologies that offer a cost-effective and environmentally friendly solution for the production of green hydrogen and renewable energy.

SwiCETec Swiss Clean Energy Technology SA

Since 2009 · 1–10 empl.

Société coopérative Cellios

Since 2020 · 1–10 empl.

The core activity of Cellios is the promotion and implementation of projects for the production of renewable energy, particularly through the installation of photovoltaic systems on the roofs of private individuals, public institutions and companies, with the aim of supporting sustainable energy transition.

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 supplies solar lighting solutions and related components, including solar street lights, photovoltaic panels, LiFePO4 batteries and LED modules. The company operates an online shop with a product catalog and publishes news and blog articles about solar lighting products and projects.

PS Panneaux solaires SA

Since 2023 · 1–10 empl.

PS Panneaux solaires SA is a subsidiary of the GEFISWISS Energy Transition Fund that manages activities related to supported photovoltaic installations. The company designs, builds and operates solar installations and sells products and services in energy services, renewable energy and energy efficiency, offering turnkey systems, maintenance, financing and technical/legal solutions for homeowners, condominiums, public bodies and real-estate actors.

Local Energy SA

Since 2020 · 11–20 empl.·5.0(1)

The core activity of Local Energy is the promotion and implementation of renewable energies, particularly in the areas of photovoltaics, electromobility and thermal energy. The company provides solutions for sustainable and efficient energy supply and advises customers on the implementation of solar and other renewable energy systems.

Solartech concept SA

Since 2024 · 1–10 empl.·5.0(3)

The core activity of Solartech Concept SA is the planning, installation and maintenance of renewable energy systems, particularly solar systems, as well as providing services in the field of energy efficiency and security. The company offers its customers a comprehensive range of services, from consulting and planning to the installation and maintenance of systems, to ensuring safety and efficiency.

Alpha Energy Swiss SA

Since 2025 · 1–10 empl.

Alpha Energy Swiss SA distributes solar energy storage batteries and inverter solutions. The company offers modular systems for residential, commercial and industrial applications, as well as delivery and installation services.