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Case Study: Kestrel power in the Namib for a cell tower

Geographical location of Rossing in Namibia Geographical location of Rossing in Namibia Final installation operational Final installation operational Raising tower and assembled turbine preparation Raising tower and assembled turbine preparation e300i raised and secured e300i raised and secured Sunset at the Rossing site, also indicative of the desert climate that the turbine is exposed to Sunset at the Rossing site, also indicative of the desert climate that the turbine is exposed to

  The Desert Project

Rossing
Erongo
Namibia

Description:

The telecommunications network in Namibia is growing to cover more of the country as communication demands increase, more repeater stations and telecommunication towers are needed in more remote areas. Some remote sites do not access to a power source. Small wind turbines supply independent power to these towers and are more advantageous than noisy and polluting generators or costly cables needed to accommodate the tower's power requirements.

Small wind turbines yield energy autonomously of the national power grid, giving planners more flexibility in placing towers and repeaters. They are also low maintenance and adaptable to site requirements. System installations are guarded and kept safe by enclosures.

Power requirement of the cellular telecommunication tower is estimated to be around 2 kWh per day, an annual demand of around 750 kWh. The Rossing site has a low wind regime with an annual average wind speed of 3.41 m/s. However the e300i more than adequately supplies this power with an annual yield at 3.4 m/s of just less than 880 kWh.

Installation Date: October 2007

Purpose:

Supply independent power to a cellular telecommunication tower in a very remote area as well as to maintain full output in the harsh desert conditions.

Installation Description:

An e300i (48V) battery charging system, including a charge controller and divert resistor supplied by Kestrel, the tower and batteries were supplied by Soltec CC.

Distributor:

Soltec, Namibia

Installation Description:

An e300i (48V) battery charging system, including a charge controller and divert resistor supplied by Kestrel, the tower and batteries were supplied by Soltec CC.

Distributor:

Soltec, Namibia

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