The worldwide largest stadium-integrated photovoltaic plant (855 kWp) went into operation in May 2005 on the Stade de Suisse Wankdorf in Berne. Since November 2007 parts of the outside surface of the stadion roof are also used for photovoltaics. The PV generator has been extended in a second phase up to 1'347 kWp.

The PV plant consists of eleven sub-plants with three different orientations. Up to now the system has been working without major problems. On the average the effective nominal power of the in the first development phase installed modules (Kyocera KC 167 GH-2) is approximately 1.6% under the manufacturer's specifications. Due the relatively small inclination angle of the modules (ß=6° resp. at outside surfaces ß=20.5°), specific energy yield during the winter months is somewhat lower than with other plants. Especially after heavy snowfalls energy losses may occur over longer periods.

The photovoltaic laboratory of the BFH-TI Burgdorf collects the measured data and evaluates them daily since April 2005.

• normalized analysis
  
• online data presentation Wankdorf (only 1. development phase; in german)