High Quality Content by WIKIPEDIA articles! The Gilgel Gibe III Dam is an under construction 243 m high roller-compacted concrete dam with an associated hydroelectric power plant on the Omo river in Ethiopia. Once completed it would be the largest hydroelectric plant in Africa with a power output of about 1870 Megawatt (MW), thus more than doubling total installed capacity in Ethiopia from its 2007 level of 814 MW. The Gibe III dam would be part of the Gibe cascade, a series of dams including the existing Gibe I and Gibe II dams as well as the planned Gibe IV (1472MW) and Gibe V (560MW) dams. The existing dams are owned and operated by the state-owned Ethiopian Electric Power Corporation, which is also the client for the Gibe III Hydroelectric dam.