One of Africa

Off-Grid solar power system produces clean energy for the municipality Tsumkwe.

Tsumkwe, Wörrstadt - juwi Solar GmbH - a subsidiary of the international project developer juwi headquartered in Germany – has realized another rural electrification project in Northern Namibia. The hybrid solar system supplies all public buildings and around 100 private households in Tsumkwe with clean solar power. With a total capacity of 200 kW peak, a battery storage of one megawatt and three integrated diesel generators it is one of Africa’ s largest off-grid solar power systems. \"We have set a standard with this plant that we would like to transfer to other African projects\" says Fabian Jochem, head of juwi’ s Off-Grid Power Supply department.

August 15 will be a day to remember for Tsumkwe. For the first time in three years, the small community had an around-the-clock electricity supply. With rising oil and transportation costs, the community’s diesel generator could only be used for up to three hours per day. The hybrid solar system has been constructed in only six weeks by juwi in cooperation with its regional partner Alternative Energy Systems cc. (Alensy). It supplies Tsumkwe’ s hospital ward, water supply, street lightning, police station, a radio station and the mobile network as well as 100 households with power. The installed 918 polycrystalline modules supply Tsumkwe with 100 percent clean power during the day. Three diesel generators with a capacity of 630 KVA are integrated into the system and can be switched on in the evening or in case of a low battery. Via a transformer station the produced power goes to two 11 kV mini-grids. That way it is possible to disconnect so called \"non-essential loads\" – for example the street lightning – in favour of so called \"essential loads\" – for example the hospital ward. With the new system Tsumkwe can reduce its electricity costs by 25 percent.

The Tsumkwe Energy Project has been planned and supervised by the Desert Research Foundation Namibia’ s (DRFN). It will be operated by NamPower, the local power company. To ensure proper operation of the solar power plant, local technicians have been trained by juwi employees and have been made familiar with the operation and maintenance of the system. The plant is monitored and steered via a specific, juwi-designed control system that controls both the SMA battery inverters and the regulation of the generator. Using GSM remote monitoring the solar plant can be controlled on the internet from Windhoek or Germany.


EU PVSEC 2011 - Come and visit juwi in hall B5, booth B1
The juwi group is present with its own booth at the EU PVSEC from September 5 to 9 in Hamburg. We look forward to see you in hall B5, booth B15.


About the juwi group
juwi is one of the world’s leading companies in the area of renewable energies. Our goal: 100 percent renewable energies. Our mission: Work together to implement renewable energies economically and reliably and with passion.
juwi’ s business activities include solar, wind and bio energy as well as hydropower, geothermal energy and electro mobility. The juwi group was founded in 1996 by Matthias Willenbacher and Fred Jung. Today, the company has more than 1,400 employees in 14 countries and had an annual revenue of approx. 800 million euros in 2010. To date, juwi has installed approx. 500 wind turbines with a total capacity of around 800 megawatts. In the solar sector, juwi has built more than 1,500 PV systems with a total capacity of more than 700 megawatts. These systems produce approx. 2.8 billion kWh annually, corresponding to the annual energy requirements of 800,000 households. juwi is one of Germany’s best employers - the company was among the TOP 20 in the acclaimed competition \"Great Place to Work\" in the category 501 to 2, 000 employees. The juwi group is headquartered in Germany and has subsidiaries in France, Italy, Spain, the Czech Republic, Greece, Poland, Bulgaria, India, Great Britain, the United States and Costa Rica.


Tsumkwe, Wörrstadt, September 5, 2011


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Attention editorial offices: For further questions please contact Mr.
Felix Wächter, Press and Media Relations, juwi Holding AG.

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