Residential Rooftop Swakopmund

Site Overview
LocationSwakopmund, Namibia
Coordinates22.7° S, 14.5° E
Average global irradiance2,050 kWh/m2/yr
Average temperature15 °C, 59 °F
Average precipitation13 mm/yr, 0.5 in/yr
Technical Overview
Date onstreamAugust 2012
System capacity3.6 kWp
Panel typeSF150-L (150 W)
Number of installed panels24
Tilt angle, orientation30°, 180° N
Expected output6,718 kWh/yr
Total CO2reduction3,782 kg/yr, 8,338 lbs/yr
InverterSB 4.000 TL-20
Financing Bank
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HopSol provides turn-key solutions for photovoltaic power plants. HopSol´s head office is located in Switzerland and the headquarter of HopSol Africa (Pty) Ltd has been established in Windhoek, Namibia, for its customers in southern Africa, where they have specialized in fulfilling the requirements of the solar industry for desert regions. Furthermore, HopSol acts as a wholesaler of all relevant parts for photovoltaic solar power solutions. Superior quality of modules and balance of equipment, along with engineering experience for desert conditions are crucial success factors.

This 3.6 kWp installation on the roof of an award-winning villa of the architect and owner of the property, Erhard Roxin, was connected to the grid in August 2012. The installation is optimal for PV with roof orientation to north and a tilt angle of 30 degrees. The roof system’s 24 Solar Frontier’s CIS thin-film modules will generate more than 6,700 kWh of electricity annually, thereby avoiding almost four tonnes of CO2 emissions.

For this uniquely located facility close to the Atlantic coast, the owner had several reasons to select Solar Frontier modules as first choice. They are well suited for the extreme climate conditions of Swakopmund as despite high temperatures the modules generate higher output levels. This is due to the technology’s low temperature coefficient. Also, the good lowlight behavior leads to higher yields in the case of fog, which frequently comes from the sea. The salt mist resistance of the modules makes them an optimum solution for coastal regions as well. The combination of these unique properties plus the integration of the black modules in the overall appearance of this villa fully convinced the the architect and homeowner.