The Ingula Pumped Storage Scheme (previously named Braamhoek) is a pumped-storage power station in the escarpment of the Little Drakensberg range straddling the border of the KwaZulu-Natal and Free State provinces, South Africa.
The pumped-storage hydroelectric scheme consists of an upper and a lower dam 4.6 kilometres (2.9 mi) apart and is connected to a power station by tunnels.
Notable contractors included CMC Impregilo Mavundla Joint Venture[2] and Concor on the dams.
[4][5] The pumped-storage hydroelectric plant uses water from the upper reservoir to generate electricity during the peak demand periods of the day.
At night, excess power on the grid generated by conventional coal and nuclear plants is used to pump water to the upper reservoir.