HCB (Hidroeléctrica de Cahora Bassa) is a Mozambican company which was founded in June 1975, under the protocol signed between the Mozambique Liberation Front and the Portuguese government.
This undertaking is located in Songo, Cahora Bassa District, in Tete province. It possesses a double curvature arch dam with a maximum height of 171 m, and a crown that is 303 m long. The dam is 23 m thick at its base and 4 m thick at the crown. It has 8 radial floodgates and a surface spillway with a total discharge capacity of 14,000 m3/s. It possesses an underground power station, on the south bank, with 5 generator groups, each of 415 MW, and a maximum flow through the turbines of 2,250 m3/s.