Commercial Rooftop Allschwil

Site Overview
Location Allschwil, Switzerland
Coordinates 47.54° N, 7.53° E
Average global irradiance 1,117 kWh/m2/yr
Average temperature 9.0 °C, 48.2 °F
Average precipitation 775 mm/yr, 30.5 in/yr
Technical Overview
Date onstream JSeptember 2012
System capacity 152.1 kWp
Panel type SF150-L (150 W)
Number of installed panels 1,014
Tilt angle, orientation 0°, Flat Rooftop
Expected output 140,000 kWh/yr
Total CO2reduction 95,000 kg/yr, 209,437 lbs/yr
Inverter SMA Tripower
Financing Bank
Private Investment

The Solvatec AG, based in Basel, Switzerland was founded in 1998 and is a leading company for consulting, planning, marketing and implementation of photovoltaic systems. The experienced team of PV specialists pays special attention to the aesthetic and functional integration of solar installations into overall building structure.

This installation of more than 150 kWp on the rooftop of a guide dog school in the Swiss town of Allschwil, was put into operation in November, 2012. More than 1,000 Solar Frontier CIS thin-film modules were installed on the flat rooftop of the building, which is distinguished by its unique architecture, characterized by its surface covering of shimmering green broken glass fragments. The guide dog school, founded in 1972, is engaged in the training of dogs for the visually impaired. The installation will produce more than 140,000 kWh of electricity per year, with associated CO2 savings of almost 100 tones, and demonstrates a further step in the positive environmental engagement environment of the guide dog school.

This PV installation on the flat rooftop was a special challenge, since the characteristic of the flat rooftop should be maintained on the one hand and a new architectural accent should be created in the interaction of the modules with the broken glass fragments on the rooftop, on the other hand. The Solar Frontier modules were able to meet both requirements. The good low-light behavior results in good output even on flat rooftops and the black colored modules allow a harmonious integration of the modules into the unique architecture of the building.