Few projects carry a nation’s name and its ambitions at the same time. The Grand Ethiopian Renaissance Dam does both. Sitting on the Blue Nile in the Benishangul-Gumuz region near Guba, it is now the largest hydroelectric plant in Africa and one of the 20 largest anywhere, formally inaugurated on September 9, 2025 after 14 years of work.

Project Scope

The dam is a roller-compacted concrete structure that rises about 145 meters above the riverbed and stretches 1,780 meters across, holding back a reservoir on the main Nile tributary. The build consumed more than 10 million cubic meters of concrete. Its powerhouses carry an installed capacity of 5.15 gigawatts. Italian contractor Webuild, formerly Salini Impregilo, delivered the civil works under a contract valued at roughly $4.8 billion, with Studio Pietrangeli as design engineer. Total project cost came in near $5 billion, and the financing story is unusual: about 91% was raised domestically through Ethiopia’s central bank and citizen bonds, with only around $1 billion of external money covering turbines and electromechanical systems.

Why It Matters

Power is the headline. Ethiopia has long run short of generation, and 5.15 GW roughly doubles the country’s electricity supply with the potential to export surplus across the Horn of Africa. The engineering is a reference point too, sitting alongside other continental-scale energy builds like the Grain Belt Express transmission line in how it reshapes a grid. The dam has also been a regional flashpoint over downstream Nile flows, which makes its completion as much a diplomatic milestone as a construction one. For a project financed largely by the people who will use its power, the finished structure is a statement about what self-funded megaprojects can deliver.

Project Team & Details