In February of 2005 , South Africa 's power company owned by the state , Eskom , said that they had a proposal to increase the holding amount of the Inga a lot through improvements and the building of a new hydroelectric dam . In February 2005 , South Africa 's state-owned power company , Eskom , announced a proposal to increase the capacity of the Inga dramatically through improvements and the construction of a new hydroelectric dam .