Cahora Bassa, in Mozambique, increases power transmission capacity

29 December 2010

Maputo, Mozambique, 29 Dec – The Cahora Bassa Hydroelectric facility (HCB) has increased its power transmission capacity by 240 megawatts, the company announced in a statement published Monday in Maputo.

The rise, which represented an investment of US$10.5 million for the company, is due to “eight converter bridges at the Songo substation going fully into operation.”

Due to a fault that occurred in 1985, the system had been reduced to seven bridges, thus limiting the nominal power transmission capacity to southern Mozambican and South africa to 1680 megawatts.

The replacement of the eighth bridge, which included repair of three high voltage transformers, valve tanks and manouvre and protection equipment began immediately after the Mozambican state took contro,l of the company in November, 2007.

The system to convert high voltage direct current (HVDC) is made up of eight convertor bridges, each with a conversion capacity of 240 megawatts, giving total installed capacity of 1,920 megawatts.

The dam currently produces 2,075 megawatts of electricity, of which South Africa consumes 1,500 megawatts and Mozambique 400 megawatts, and the remainder is shared by other southern African countries. (macauhub)