For example, some of the planned irrigation schemes in upstream countries are not economically sound if the power stations that are in an advanced planning phase are implemented. This study also reveals that the economic value of the three largest storage infrastructure (Kariba, Itezhitezhi, Cahora Bassa) is around US$443 million/year.
The case study is the addition of the Grand Ethiopian Renaissance Dam (GERD) and considers how its operation may be coordinated with adaptations to the operations of Egypt’s High Aswan Dam. The results demonstrate that a lack of coordination is likely to be harmful to downstream riparians and suggest that adaptations to infrastructure in Sudan and Egypt can reduce risks to water supplies and energy generation. Although risks can be substantially reduced by agreed releases from the GERD and basic adaptations to the High Aswan Dam, these measures are still insufficient to assure that no additional risk is assumed by Egypt. The method then demonstrates how improvements to water security for both downstream riparians can be achieved through dynamic adaptation of the operation of the GERD during drought conditions. Finally, the paper demonstrates how the robustness of potential management arrangements can be evaluated considering potential effects of climate change, including increased interannual variability and highly uncertain changes such as increases in the future persistence of droughts.
Gerd Morgenschweis Edit Profile
Expansion planning of electricity infrastructure is critical to support investment and maintaining balanced consumer electricity prices. Variations in water availability due to a changing climate could leave hydro infrastructure stranded or result in underutilization of available resources. In this study, we develop a framework consisting of long-term models for electricity supply and water systems management, to assess the vulnerability of potential expansion plans to the effects of climate change. We find that the most resilient EAPP rollout strategy corresponds to a plan optimised for a slightly wetter climate compared to historical trends. This study demonstrates that failing to climate-proof infrastructure investments can result in significant electricity price fluctuations in selected countries (Uganda & Tanzania) while others, such as Egypt, are less vulnerable.
Even though there is no legal agreement on the sharing of Zambezi waters, an assessment of basin-wide economically efficient allocation policies will provide valuable information at a time where water managers and policy makers in the region are negotiating the establishment of a unified river basin institution, called the Zambezi Watercourse Commission (ZAMCOM). That institution would be responsible for, amongst other things, the design of allocation rules. In this study, basin-wide allocation policies are derived from a hydroeconomic model that considers the largest existing and planned hydraulic infrastructure and irrigation schemes in the basin. Our results illustrate that the economic value of water varies spatially, driven primarily by large changes in elevation and on the locations of existing or proposed dams. This observation may have implications for future decisions about the siting of expansions in irrigated agriculture.
Norplan, Norconsult and Lahmeyer International, Karadobi Multipurpose Projet pre-feasibility study (Final Report) – vol. 5, Initial Environmental Assessment, Technical Report, Ministry of Water Resources, The Federal Democratic Republic of Ethiopia, 2006. reapplied this framework specifically considering the GERD, showing strong economic benefits of cooperation. Similar to the studies mentioned previously, this framework assumes optimized reservoir management across the international borders, which effectively replaces existing management with an ideally coordinated system.
- Close to the border with Sudan, Ethiopia is currently building the largest hydroelectric power plant in Africa with a storage volume corresponding to approximately 1.5 years of the mean discharges of the Blue Nile.
- The theoretical benchmark for basin 516 cooperation in the agricultural and power sector (basin_MS scenario) generates the lowest annual 517 national costs only for Uzbekistan.
- Ethiopia is the main source of the Nile River, and the country urgently needs water for irrigation and hydro-electric power development.
- Although this approximation is satisfactory for high head power stations for which the difference between the maximum and the minimum head is small compared to the maximum head, it may no longer be acceptable when a significant portion of the energy originates from low and/or medium head power plants.
- The method includes an exploration of potential management decisions using a multiobjective evolutionary algorithm, intertwined with an iterative process of formulating cooperative strategies to overcome technical and political barriers faced in a transboundary negotiation.
This paper presents a methodology to identify the likely upper and lower bounds in multireservoir system benefits, providing a reference framework for analyzing the economic value of coordination. The methodology is applied to a large-scale multireservoir system in Brazil. The methods rely on the comparison between two management scenarios. The first one mimics typical system operation based on individually designed rule curves, which are likely to perform on the lower bound.
Water scarcity is a global concern, particularly in arid and semi-arid. This fact should be considered in decision making and management of water resources and also policy makers should pay attention to the effects of these policies as a crucial criterion. This study was carried out to investigate the effect of different policies of agricultural products marketing network reform on water resources management, especially on the use of groundwater in the Neyshabur basin in Iran. Thus, taking into account the effects of marketing on the supply and demand water, we used hydro-economic (H-E) model.
In the economic sector of the H-E model, Regional Positive Mathematical Programming (RPMP) was used to study the effects of various scenarios (marketing network reform policies) on crop patterns. In the hydrologic sector of the H-E model, WEAP was used to analyze and simulate of water resources according to the different crop patterns (results obtained from economic sector). The results showed the network marketing reform leads to change in cropping pattern. The cultivated area of crops with high marketing margin was increased. Also, the cultivated area of alfalfa and cotton decreased in most scenarios.
Electrical Engineer Julio Hildebrand is part of the Lahmeyer team advising Sudanese Hydro Generation Company Ltd (SHGC) on the damâ€™s rehabilitation and uprating. Discover the project from Julioâ€™s perspective. Planning in the Blue Nile, Discussion Paper Series 13-05, Environment for Development, 2013. used a stochastic dual dynamic programming approach within a hydro-economic framework to optimize operations for the benefits of hydropower and agriculture pro- duction under various build-out scenarios.
Arjoon et al. (2014) , Tilmant and Kinzelbach 38 (2012) and Whittington et al. (2005) assessed the value of cooperation in international river basins 39 and found that there are significant gains from basin-wide cooperation. The equity issue of sharing 40 benefits from cooperation has been addressed by game theory (Teasley and McKinney 2011;Wu 41 and Whittington 2006) and an approach based on a stakeholder vision of fairness ( Arjoon et al. 42 2016).
The theoretical benchmark for basin 516 cooperation in the agricultural and power sector (basin_MS scenario) generates the lowest annual 517 national costs only for Uzbekistan. The â€œNew Roseiresâ€ hydropower plant in Sudan will in the future provide to the country an important expansion in power generation capacity, enough for supplying electricity to thousands of additional homes, as well as public infrastructure (e.g. hospitals). This will significantly increase the quality of living of the Sudanese population.