Other upgrades included the construction of three new energy transformation substations, with capacities 400KV, 220KV and 60KV, to support connection between Cambambe 1 and 2, Capanda Hydroelectric Power Station and Laúca Hydroelectric Power Station. The renovation and upgrade of Cambambe 1 and the construction of Cambambe 2, cost an estimated US$2 billion.
