Grand Ethiopian Renaissance Dam

The Grand Ethiopian Renaissance Dam (GERD), formerly known as the Millennium Dam and sometimes referred to as the Hidase Dam, is a gravity dam on the Blue Nile River in Ethiopia. It was started in 2011. The dam is in the Benishangul-Gumuz Region of Ethiopia, about 14 km (9 mi) east of the border with Sudan.

The primary purpose of the dam is electricity production to relieve Ethiopia's acute energy shortage and for electricity export to neighbouring countries. With a planned installed capacity of 5.15 gigawatts, the dam will be the largest hydroelectric power plant in Africa when completed, as well as among the 20 largest in the world. Filling the dam's reservoir could reduce Nile flows by as much as 25% .

First phase of filling the reservoir began in July 2020 and in August 2020 water level increased to 540 meters (40 meters higher than the bottom of the river which is 500 meters above sea level). The second phase of filling was completed on 19 July 2021, with water levels increased to around 575 meters. The third filling was completed on 12 August 2022 to a level of 600 metres (2,000 ft). The fourth filling was completed on 11 September 2023 with water levels at around 625 meters. Actual water level (1 September 2023) is at around 620 meters and was measured using images from the Sentinel satellite. It will take between 4 and 7 years to fill with water, depending on hydrologic conditions during the filling period.

On 20 February 2022, the dam produced electricity for the first time, delivering it to the grid at a rate of 375 MW. A second 375 MW turbine was commissioned in August 2022.