Annual Forum Papers

Optimised reservoir operation model of regional wind and hydropower integration: Case study - Zambezi basin and South Africa

  • Year: 2015
  • Author(s): Yohannes Gebretsadik; Charles Fant; Kenneth Strzepek
  • Countries and Regions: South Africa, Zambia, Zimbabwe
Session 6: A regional approach to energy resources
This study develops a reliability assessment method of wind resource using optimum reservoir target power operations that maximises the firm generation of integrated wind and hydropower. This model is applied on the reservoir storages and hydropower system in the Zambezi river basin to demonstrate how storage reservoirs could be used to offset wind power intermittence in South Africa subjected to different physical and policy constraints. The result obtained indicates that high regulation of wind and hydro can be achieved as a result of combined operation and showed an increased level of wind penetration in South Africa's power system over the reference scenario. The result also indicated a reduced level of coal power utilization and less cycling requirement. This will have a positive outcome in terms contributing to South Africa's goal towards reducing greenhouse gas emission and the efforts to build green energy supply and resilience to the impacts of climate change