The AfDB said the decision of the Kenyan government to build a 428km transmission link was crucial to its decision to back the project, which is also being supported by a group of investors including Danish wind equipment group Vestas.

The wind farm – which is slated to use Vestas 850kW turbines – has been the subject of several false dawns, with construction originally due to start in mid-2011, before being pushed back to the end of that year, then into 2012, and then going quiet.

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