Solar & Photovoltaics

Schweizer Naturstrom AG 

Lucerne · Since 2006

The core activity of Schweizer Naturstrom AG is the planning, realization, operation and maintenance of plants that produce electricity from renewable energy sources such as sun, wind, biomass and hydropower. In particular, the company focuses on the financing, construction and operation of photovoltaic systems in Switzerland.

SD Stenio Dozio SA 

Lugano · Since 2008

SD Stenio Dozio is a Swiss company specializing in the areas of energy efficiency, renewable energy and smart home solutions. The core activities include planning, installation and integration of photovoltaic systems, energy efficiency solutions and smart home systems for private and commercial customers. The company also offers consulting services for optimizing energy consumption and costs.

SEBASOL-Valais 

Fully · Since 2021

SEBASOL-Valais designs and assists in building solar thermal systems for domestic hot water (DHW) and heating, often combined with a hydraulic wood stove to cover remaining needs. It operates via volunteer-run regional centres that train self-builders, supplies materials at cost, provides courses and documentation, and cooperates with licensed installers for turnkey installations.

Second Foundation Trading AG 

Steinhausen · Since 2023

The core activity of Second Foundation Trading AG is the trading of energy products, particularly electricity, gas and renewable energies, in over 20 markets in Europe and worldwide.

Seeholzer Holzbau 

Vordemwald · Since 2023

Seeholzer Holzbau is a carpentry and timber-construction company performing works such as roof structures, dormers, façades, balconies, carports, renovations, extensions, loft additions and agricultural buildings. Services also include insulation (floor, wall, roof), terrace decking, interior finishing (paneling, drywall), roofing and roof renovation, roof windows and installation of solar systems on various roof coverings.

SegenSolar Switzerland GmbH 

Bern · Since 2023

The core activity of SegenSolar Switzerland GmbH is the wholesale trade of photovoltaic products, particularly solar modules, inverters, storage systems, mounting systems, EV charging stations and accessories. The company offers a wide range of PV products from various manufacturers and supports its customers through a customer portal, personal contacts and various tools.

SEMS Engineering GmbH 

Zurich · Since 2023

The core activity of SEMS Engineering GmbH is the planning and realization of photovoltaic projects, including specialized planning, consulting, engineering, planning and construction of solar systems. The company offers comprehensive services for the development and implementation of solar energy solutions, from concept development to tendering, construction management and maintenance of photovoltaic systems.

SENSIT-IPS Service GmbH 

Malters · Since 2008

The core activity of I.P.S Service GmbH is the planning, installation and maintenance of solar systems, as well as consulting and supporting customers in the implementation of solar energy projects.

SENSOLTEC GmbH 

Zermatt · Since 2024

Service-Pro Swiss GmbH 

Bürglen Ur · Since 2024

Service-Pro Swiss GmbH provides professional cleaning and drone services for commercial, industrial and private properties. Services include façade, roof and PV-system cleaning, glass and floor care, as well as certified drone inspections, surveying and search operations.

SESB AG 

Murg · Since 2020

SESB AG designs, supplies and installs solar photovoltaic systems, including grid‑tie systems, grid‑tie systems with battery back‑up, and off‑grid solutions. Services include system assessment, project proposals, financing support and after‑sales maintenance.

SE Solar GmbH 

Holderbank So · Since 1997

SE Solar GmbH provides consulting, planning, installation and maintenance for solar thermal systems, photovoltaic systems, wood- and pellet-fired heating systems and heat pumps. The company carries out plant and control engineering, develops custom solutions and services special combustion systems such as flameless oxidation (FLOX).

SGT Energie AG 

Solothurn · Since 2021

SIENAR Solar GmbH 

Freienbach · Since 2023

The core activity of Estrella Immobilien is the planning, installation and maintenance of solar systems for private, commercial and industrial properties. They offer services such as initial consultation, site evaluation, system design, installation and maintenance of solar systems to enable sustainable and efficient energy supply.

Signer Dach AG 

Hombrechtikon · Since 1992

The core activity of Signer Dach AG is the planning, execution and maintenance of roofing work, including pitched and flat roofs, heat and thermal insulation, walkways, green roofs, fall protection, maintenance, solar systems, as well as the preparation of grant applications and building permits.

Simone Dach GmbH 

Sargans · Since 2024

The core activity of Simone Dach GmbH is the provision of services in the field of roofing, including: pitched and flat roof work, sealing, sheet metal work, balcony and terrace work, installation of solar and PV systems, lightning protection systems, maintenance of all kinds, and repairs. The company thus offers comprehensive solutions for all types of roofing and roof installations.

Simpligy GmbH 

Guntershausen B. Aadorf · Since 2022

The core activity of Simpligy is the planning, construction and operation of photovoltaic systems in Switzerland. They offer turnkey solar power plants, taking care of all aspects, including project planning, coordination with partners, application for funding, quality checks and long-term support.

SLT énergie Sàrl 

Orbe · Since 2024

The core activity of SLT énergie Sàrl is the conception, realization and maintenance of photovoltaic systems and energy storage systems for private and commercial customers.

SMAPUNTOCH SA 

S. Pietro · Since 2021

The core activity of Smapuntoch is the planning, installation and maintenance of photovoltaic systems for private and commercial customers, with the aim of supporting them in generating renewable energy and reducing their energy costs.

Smart Energy Link AG 

Frutigen · Since 2017

The core activity of Smart Energy Link AG is the development and implementation of energy solutions, particularly in the field of solar energy and electromobility. The company offers intelligent solar power controls that enable the economic and convenient use of self-produced solar power. In addition, Smart Energy Link AG also provides energy concepts and specialized planning to turn buildings into profitable power plants.