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It has a 26,300,000 m 3 (21,300 acre⋅ft) water storage capacity of which 21,900,000 m 3 (17,800 acre⋅ft) can be pumped up to the upper reservoir. A 2 km (1.2 mi) long headrace tunnel connects the upper reservoir to the underground power station which houses 4 x 333 megawatts (447,000 hp) reversible Francis pump-turbines.
Windpumps are used extensively in Southern Africa, Australia, and on farms and ranches in the central plains and Southwest of the United States. In South Africa and Namibia thousands of windpumps are still operating. These are mostly used to provide water for human use as well as drinking water for large sheep stocks.
Submersible pump cables are electrical conductors designed for use in wet ground or under water, with types specialized for pump environmental conditions. [5] [6] [7] A submersible pump cable is a specialized product to be used for a submersible pump in a deep well, or in similarly harsh conditions.
The Palmiet Pumped Storage Scheme consists of two 200 megawatts (270,000 hp) turbine units located 2 kilometres (1.2 mi) upstream of the Kogelberg Dam on the Palmiet River near Cape Town, South Africa. [2] The pumped-storage hydroelectricity plant is capable of responding to a surge in peak power demand in minutes. [3]
The scheme provides for up to 27.6 gigawatt-hours (99 TJ) of electricity storage in the form of 27,000,000 cubic metres (950,000,000 cu ft) of water. The water is pumped to Driekloof during times of low national power consumption (generally over weekends) and released back into Kilburn through four 250 megawatts (340,000 hp) turbine generators ...
The Steenbras Power Station, also Steenbras Hydro Pump Station, is a 180 MW pumped-storage hydroelectric power station commissioned in 1979 in South Africa.The power station sits between the Steenbras Upper Dam and a small lower reservoir on the mountainside below. [1]