Solland Solar and ATS to build prototype production line for photovoltaic modules with Sunweb® back-contacted solar cells

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Sunweb® back-contacted solar cell was combined with new interconnection and switching technology from AT


The overall goal of the technology partnership between Solland Solar and AT&S is to jointly develop and put into industrial production the innovative back-contact module technology for Sunweb® cells. The technology uses processes and materials that are standard in the printed circuit board industry but are not yet applied in photovoltaics. Solland Solar’s Sunweb® concept enables best in class module efficiency for multi-crystalline silicon solar cells with beautiful visual appearance and low production cost.

In the first year of the partnership, Solland Solar’s basic idea of the Sunweb® back-contacted solar cell was combined with new interconnection and switching technology from AT&S. All components and production processes have been developed accordingly for use in volume production. Extensive tests have been successfully completed, establishing that the project satisfies all the necessary reliability, safety and performance requirements.

The next phase in the project, the construction of a joint prototype production line at AT&S’s Leoben-Hinterberg plant in Austria, is scheduled for completion by the summer of 2010, and will incorporate the results achieved during the last year into the industrial production process. Additional objectives include further optimisation of the production process and certification under IEC 61215 and IEC 61730. Selected reference projects are being implemented in parallel, to highlight the cost effectiveness of the new technology and its advantages in practical operation.

The groundbreaking innovative module concept offers ample scope for further developments to increase efficiency and lower cost of solar energy. Solland Solar and AT&S are working intensively together to exploit this potential.

About Solland Solar

Solland Solar is the leading Dutch-German solar technology company developing and producing solar cells and modules. With its patented Sunweb® concept Solland is leading the solar industry and paving the way towards grid parity. Solland Solar, a 100% subsidiary of Delta the Dutch utility company. For more information about Sunweb® and Solland Solar please visit

About AT&S

AT&S Austria Technologie & Systemtechnik Aktiengesellschaft (AT&S) is European market leader and one of the world’s strongest-performing printed circuit board manufacturers. AT&S is especially well positioned in the high-tech market segment for HDI microvia printed circuit boards, which are chiefly used in mobile devices. The Group is also highly successful in the automotive and industrial and medical technology sectors. As a vigorous and growing international enterprise, AT&S has a global presence, with three production facilities in Austria (Leoben, Fehring, Klagenfurt) and one each in India (Nanjangud), China (Shanghai) and Korea (Ansan, near Seoul). For more information visit

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