Skip to content
NEW: CREATE AN AI-ASSISTED TENDER IN 2 MINUTES — TRY IT FREE
Back to search
Sonnenstromfabrik – Fertigung

Manufacturer of high-quality photovoltaic modules – glass/glass, glass/foil and roof-integrated, made in Germany.

Sonnenstromfabrik Logo

CS Wismar GmbH (SONNENSTROMFABRIK)

WismarNew on Amplifa

more than 25 yearsModule manufacturing in Europe
WismarHeadquarters and production
2024Top Brand PV award
12/20 yearsProduct warranty (glass/foil or glass/glass), extendable

About Sonnenstromfabrik

SONNENSTROMFABRIK (CS Wismar GmbH) is a German manufacturer of photovoltaic modules with headquarters and production in Wismar. The company has been producing solar modules in Europe for more than 25 years and serves different applications with the DIAMOND (glass/glass) and SAPPHIRE (glass/foil) series as well as roof-integrated modules. The modules are produced using modern half-cut cell technology, and in the case of the Professional glass/glass series, with back contact technology. The material basis is silicon solar cells, glass, backsheet films and, in cooperation with Oxford PV, perovskite. Production follows CO2-optimized processes with regular audits and supplier audits. The sales countries include Germany, France, the Benelux countries and Italy; sales are made via wholesale and installation partners.

Site
Wismar
Processes
PV module manufacturing (solar modules, half-cut cell technology), Glass/glass module manufacturing with back contact technology, Glass/foil module manufacturing, Roof-integrated module manufacturing, Product warranty (glass/foil 12 years, glass/glass 20 years; extendable to 25/30 years), All-round photovoltaic protection/insurance incl. storage system, Warranty extension and performance guarantee, Webinars for installers/skilled trades
Materials
Silicon solar cells, Perovskite, Glass, Backsheet film, Perovskite (Oxford PV)
Industries
Photovoltaics/Solar Energy, Wholesale, Installation Trade
  1. 01

    Cell and material procurement

  2. 02

    Module manufacturing (stringing, laminating)

  3. 03

    Quality inspection

  4. 04

    Distribution via wholesale and installation partners

  5. 05

    Service and warranty processing

Materials and Technologies

Si

Silicon solar cells

Base material of the solar cells for all module types, including half-cut technology.

Glas/Glas

Glass

Glass/glass module design for the highest performance and design requirements and long service life.

Glas/Folie

Backsheet film

Glass/foil design of the SAPPHIRE series for quality- and aesthetics-conscious applications.

Perovskit

Perovskite (Oxford PV)

Material for perovskite modules in cooperation with Oxford PV.

Sites

Wismar

DE

Headquarters and production (module plant)

Materials
Silicon solar cells, glass, backsheet film, perovskite

Inside the production

Facade of the Sonnenstromfabrik in Wismar
Facade of the Sonnenstromfabrik in Wismar

Industries

Photovoltaics/Solar EnergyWholesaleInstallation Trade

Processes & technical limits

ProcessesToleranceMax. partWeightLot sizeMaterials
PV module manufacturing (solar modules, half-cut cell technology)Assembly––––Silicon solar cells, Glass, Backsheet film, Perovskite (Oxford PV)
Glass/glass module manufacturing with back contact technologyAssembly––––Glass, Silicon solar cells
Glass/foil module manufacturingAssembly––––Glass, Backsheet film, Silicon solar cells
Roof-integrated module manufacturingAssembly––––Glass, Silicon solar cells

Additional services

Product warranty (glass/foil 12 years, glass/glass 20 years; extendable to 25/30 years)All-round photovoltaic protection/insurance incl. storage systemWarranty extension and performance guaranteeWebinars for installers/skilled tradesDealer search/referral to installation partners and wholesalers

Reference customers

Oxford PV (cooperation)

History

  1. 2024

    Award 'Top Brand PV 2024'

  2. 2023

    Dr. Bernhard Weilharter leaves the company on June 30

  3. 2023

    Intensification of the cooperation with Oxford PV for perovskite modules at Intersolar in Munich

  4. More than 25 years of experience as a manufacturer of solar modules in Europe

Personalised demo

Ready to see Amplifa Marketplace in action?

From a structured request to the right manufacturing partner: AI-assisted matching, verified suppliers and transparent metrics — in one place for industrial companies across the DACH region.

Request a demo