Commercial Rooftop Windhoek

Site Overview
LocationWindhoek, Namibia
Coordinates22.6° S, 17.1° N
Average global irradiance2,363 kWh/m2/yr
Average temperature19.9 °C, 66.4 °F
Average precipitation362 mm/yr, 14.3 in/yr
Technical Overview
Date onstreamSeptember 2012
System capacity69.6 kWp
Panel typeSF150-L (150 W)
Number of installed panels464
Tilt angle, orientation14°, 180° N
Expected output151,102 kWh/yr
Total CO2reduction85,070 kg/yr, 187,545 lbs/yr
Inverter4 x Sunny Tripower STP 17.000 TL-10
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 nearly 70 kWp system was installed on a chicken farm on several rooftops of the Waldschmidt Eggs company in the Namibian town of Windhoek. On the rooftops of the parallel running chicken coops, CIS modules of Solar Frontier were installed in two rows facing to the north, with a low tilt angle of only 14 degrees. The system will annually produce more than 150,000 kWh of electricity and thus offset over 85 tons of CO2 emissions. The PV installation will cover about 70 % of the annual electricity demand of the chicken farm, which underlines the environmental commitment of the company.

Besides the ecological aspects of this installation, the economics were also a crucial factor for the owner. Due to the high irradiation levels, increasing energy costs in Namibia and the high efficiency of the Solar Frontier thinfilm modules, the owner of this PV installation is expecting a payback time of less than five years. Another important criterion for the use of Solar Frontier’s CIS modules was the ammonia resistance of the modules. The Solar Frontier modules combine all these advantages and thus represent the most ecological and economical solar power solution for Waldschmidt Eggs.