Grand Ethiopian Renaissance Dam

The Grand Ethiopian Renaissance Dam is a large hydroelectric dam on Ethiopia’s Blue Nile. Its reservoir stores water for electricity generation and affects the timing of downstream Nile flows.

Hydroelectricity: Electricity generated by converting the energy of moving or falling water. The dam converts water released from its reservoir into electrical power.
Nile water dispute: A political dispute over the allocation and management of Nile waters among riparian states. The reservoir’s filling and operation are central points of disagreement.
Millennium Dam: The original name for the Grand Ethiopian Renaissance Dam, announced in 2011. The project began under this name before being renamed to emphasize Ethiopia’s national aspirations.
Dam filling: The staged impoundment of water in a reservoir behind a newly built dam. The pace and coordination of filling have been disputed because they affect downstream flows.
Blue Nile: A major tributary of the Nile that rises in Ethiopia and joins the White Nile in Sudan. The dam stands on this river, whose seasonal flow supplies its reservoir.
Egypt: A country in northeastern Africa whose population and agriculture depend heavily on the Nile. Egypt worries that dam operations could reduce or disrupt downstream water supplies.
Abiy Ahmed: An Ethiopian politician who became prime minister in 2018 and led the country during the dam’s inauguration. His government oversaw the dam’s commissioning and later stages of negotiations.
Transboundary water management: The cooperative governance of water resources shared across national borders. The dam tests how countries can coordinate operations on an international river.
Reservoir: An artificial lake created to store water, usually behind a dam. Its storage capacity lets the dam regulate water releases as well as generate power.
Sudan: A country in northeastern Africa through which the Blue Nile flows before reaching Egypt. Sudan is downstream of the dam and may gain from regulated flows while facing operational risks.

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