The Organization for the Development of the Senegal River (OMVS), which consists of Mali, Mauritania and Senegal, has constructed two dams. Senegal completed the Diama dam in 1986 and its primary function is to stop the Upstream encroachment of seawater from the Atlantic Ocean. In 1987, Mali completed the Manatali dam, which OMVS built on the Bafing River, the main tributary of the Senegal River. The Manatali project was also to include a 200-MW power station and an 800-mile network of transmission lines to the capitals of Mali (Bamako), Mauritania (Nouakchott) and Senegal (Dakar). Cost overruns, coupled with political and military tensions between Mauritania and Senegal initially canceled the construction of the power facilities. In March 2000, ADB approved a $33.5 million loan for the Manatali energy project. The Manatalis generating facilities came online in December 2001, supplying power to Malis grid. Senegal connected its power grid to Manatali in July 2002 and Nouakchott was connected in November 2002. The OMVS signed a new charter in May 2002 to allocate water resources and hydroelectric power, and approved the restructuring of the Manatali Water Management Company (SOGEM). SOGEM will maintain ownership of infrastructure and equipment at Manatali, but Eskom will handle marketing and distribution of power generated at Manatali. Since 2004, OMVS has been conducting a feasibility study on the construction of the Felou hydroelectric power plant (60 MW) in Mali. In February 2006, the European Commission and the European Investment Bank set up a trust fund for infrastructure in Africa that is expected to finance the construction of the Felou power plant and an interconnection between grids in Malawi and Mozambique. The trust fund has a $422 million budget, which will be coupled with loans from the European Bank.