%0 Journal Article %J Water Supply %D 2022 %T Water-food-energy nexus for transboundary cooperation in Eastern Africa %A Elsayed, Hamdy %A Djordjević, Slobodan %A Savic, Dragan %A Tsoukalas, Ioannis %A Makropoulos, Christos %X Establishing cooperation in transboundary rivers is challenging especially with the weak or non-existent river basin institutions. A nexus-based approach is developed to explore cooperation opportunities in transboundary river basins while considering system operation and coordination under uncertain hydrologic river regimes. The proposed approach is applied to the Nile river basin with a special focus on the Grand Ethiopian Renaissance Dam (GERD), assuming two possible governance positions: with or without cooperation. A cooperation mechanism is developed to allocate additional releases from the GERD when necessary, while a unilateral position assumes that the GERD is operated to maximize hydropower generation regardless of downstream users' needs. The GERD operation modes were analysed considering operation of downstream reservoirs and varying demands in Egypt. Results show that average basin-wide hydropower generation is likely to increase by about 547 GWh/year (1%) if cooperation is adopted when compared to the unilateral position. In Sudan, hydropower generation and water supply are expected to enhance in the unilateral position and would improve further with cooperation. Furthermore, elevated low flows by the GERD are likely to improve the WFE nexus outcomes in Egypt under full cooperation governance scenario with a small reduction in GERD hydropower generation (2,000 GWh/year (19%)). %B Water Supply %8 Mar-01-2022 %G eng %U https://iwaponline.com/ws/article/doi/10.2166/ws.2022.001/86211/Water-food-energy-nexus-for-transboundary %R 10.2166/ws.2022.001 %0 Journal Article %J Journal of Water Resources Planning and Management %D 2020 %T The Nile Water-Food-Energy Nexus under Uncertainty: Impacts of the Grand Ethiopian Renaissance Dam %A Elsayed, Hamdy %A Djordjević, Slobodan %A Savić, Dragan A. %A Tsoukalas, Ioannis %A Makropoulos, Christos %X

Achieving a water, food, and energy (WFE) nexus balance through policy interventions is challenging in a transboundary river basin because of the dynamic nature and intersectoral complexity that may cross borders. The Nile basin is shared by a number of riparian countries and is currently experiencing rapid population and economic growth. This has sparked new developments to meet the growing water, food, and energy demands, alleviate poverty, and improve the livelihood in the basin. Such developments could result in basinwide cooperation or trigger conflicts among the riparian countries. A system dynamics model was developed for the entire Nile basin and integrated with the food and energy sectors in Egypt to investigate the future of the WFE nexus with and without the Grand Ethiopian Renaissance Dam (GERD) during filling and subsequent operation using basinwide stochastically generated flows. Different filling rates from 10% to 100% of the average monthly flow are considered during the filling process. Results suggest that the GERD filling and operation would affect the WFE nexus in Egypt, with the impact likely to be significant if the filling process occurred during a dry period. Food production from irrigated agriculture would be reduced by 9%–19% during filling and by about 4% during GERD operation compared with the case without it. The irrigation water supply and hydropower generation in Sudan will be reduced during the filling phase of the GERD, but this is expected to be improved during the dam operation phase as a result of the regulation afforded by the GERD. Ethiopian hydropower generation is expected to be boosted by the GERD during the filling and operation of the dam, adding an average of 15,000  GWh/year15,000  GWh/year once GERD comes online. Lastly, the results reveal the urgency of cooperation and coordination among the riparian countries to minimize the regional risks and maximize the regional rewards associated with the GERD.

%B Journal of Water Resources Planning and Management %V 146 %P 04020085 %8 Jan-11-2020 %G eng %U http://ascelibrary.org/doi/10.1061/%28ASCE%29WR.1943-5452.0001285http://ascelibrary.org/doi/pdf/10.1061/%28ASCE%29WR.1943-5452.0001285 %N 11 %! J. Water Resour. Plann. Manage. %R 10.1061/(ASCE)WR.1943-5452.0001285