Solar & Photovoltaics in
Solothurn

Saudan Immo AG

Since 2007 · 21–50 empl.·4.6(78)

The core activity of Saudan AG includes the planning, installation, maintenance and repair of: Sanitary and heating systems (including heat pumps, solar heating, pellet, wood chip, gas and oil heating systems); Metalwork (including custom bending, cladding, roof edges, frames, gutters, downspouts and complex folded roofs); Flat roof and green roof solutions. The company also offers comprehensive services in these areas, including consulting, planning, installation and maintenance.

Solstis Energy AG

Since 2023 · 51–100 empl.·4.9(47)

The core activity of Solstis Energy AG is the planning, installation and maintenance of holistic solar solutions for private and business customers, including consulting and sales of solar systems and energy storage systems, with the goal of contributing to the energy transition and sustainable energy supply in Switzerland.

SOLEIS AG

Since 2011 · 1–10 empl.·5.0(4)

The core activity of Soleis AG is the planning, implementation and maintenance of sustainable energy solutions, particularly in the areas of: Photovoltaic systems (PV systems), Energy storage systems with and without grid replacement power, Charging infrastructure, Heat pumps, Electrical installations. The company offers comprehensive services, from consulting to planning, installation and maintenance, and targets private households, commercial enterprises, agriculture, residential and industrial sectors.

Genossenschaft OPTIMA-SOLAR Solothurn

Since 2011 · 1–10 empl.

The core activity of OptimaSolar Switzerland is the production and distribution of solar power through regional cooperatives that realize and operate photovoltaic systems. The company supports and represents the affiliated cooperatives at a supra-regional level and promotes decentralized and sustainable power supply.

SGT Energie AG

Since 2021 · 11–20 empl.

Fankhauser Solar AG

Since 2014 · 11–20 empl.·3.0(2)

The core activity of Fankhauser Solar AG is the distribution and consulting of products and solutions in the field of photovoltaics, including solar modules, inverters, storage systems, mounting systems, accessories and electromobility. The company also offers services such as consulting, planning and conception, logistics, training and events to support customers in realizing their photovoltaic projects.

PrimoSolar GmbH

Since 2024 · 1–10 empl.·5.0(12)

The core activity of PrimoSolar is the planning, installation and maintenance of photovoltaic systems, battery storage systems and e-mobility solutions, in particular the installation of solar systems, storage systems and wallboxes for private households and companies in Switzerland.

Nodera AG

Since 2025 · 1–10 empl.

Nodera AG develops and operates photovoltaic systems and provides services to finance and flexibilize solar installations, including temporary or permanent purchase of systems to release capital. Services include turnkey solutions, an offer-calculator tool and 24/7 monitoring of installations via Nodaira.

Y-SOLAR Analytics GmbH

Since 2022 · 11–20 empl.

Y-SOLAR Analytics GmbH develops data-driven models to assess site suitability and forecast the economic performance of photovoltaic systems, with a focus on multi-family residential buildings. The company provides roof-leasing and PV financing solutions, optimized ZEV (collective self-consumption) systems, real-time monitoring and ZEV-compliant billing services.

H. Metzner, Solarenergie-Technik

Since 1993 · 1–10 empl.

Helvetia Solar AG

Since 2010 · 1–10 empl.

Z-Solar AG

Since 2018 · 1–10 empl.