The hydropower potential of the Zambezi River Basin is estimated at 20 000 megawatts (MW)of which about 5 000 MW has been developed (Tumbare 2004). More than half of this potential is in Mozambique, about one-quarter in Zambia and one-sixth in Zimbabwe (SADC and ZRA 2007). The Cahora Bassa, Kariba and Kafue Gorge dams provide…