ASCA solarizes the glass façade of an office building

In cooperation with BGT (Bischoff Glastechnik GmbH) and the architects of H III S (Harder Stumpfl Schramm freie Architekten), green ASCA® solar modules, whose design was inspired by the brick walls of the adjacent buildings, were designed, manufactured and laminated into large glass panels, which form the facade of the newly constructed municipal services building of the city of Gronau.

The integration of solar modules into large glass panels demonstrates a high level of technical mastery and represents a major advance in the field of building integrated photovoltaics (BIPV).

The electricity produced is used for self-consumption in the building.

Transparent glass modules produce electricity

In keeping with the aesthetics of the urban landscape, ASCA developed green solar modules with a custom design inspired by the building's brick facades. In addition, while the solar glass is transparent from the inside, it is translucent from the outside, ensuring a bright and intimate work environment for employees.


“We were convinced that we could take advantage of many design options.” […] “Building-integrated photovoltaics is a hot topic that will continue to grow in importance in the future.”

Architects from H III S

Key information

Project steps

  • Design & project planning
    2018 – October 2020
  • Production of OPV & pre-assembly
    November 2020 – March 2021
  • Installation & commissioning
    April 2021


Mission Stakeholder
Overall design HIIIS, ASCA
Technical system development ASCA
OPV modules design & production HIIIS, ASCA
Electrical design (incl. design) ASCA
OPV inlay assembly ASCA
Glass lamination BGT
Installation Terhalle

Project team

Hermann Issa - Senior Vice President Business Development et Project Management - ASCA
Hermann ISSA

Project management

Tobias SAUERMANN - Production - ASCA



BIPV glass façade of an administrative building

Architect / End client

H III S – Harder Stumpfl Schramm freie Architekten / Stadtwerke Gronau

BIPV glass façade of an administrative building