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The following page lists all pumped-storage hydroelectric power stations that are larger than 1,000 MW in installed generating capacity, which are currently operational or under construction. Those power stations that are smaller than 1,000 MW , and those that are decommissioned or only at a planning/proposal stage may be found in regional ...
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The power stations hold the distinction of being the first large-scale hydro-electric plants in the United Kingdom to be constructed to provide a public supply, rather than for industrial use. The Grampian scheme near Pitlochry was authorised two years earlier, in 1922, but construction did not start until 1928.
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 in times of high electricity demand. [1] Map of dams in the scheme
The pumped-storage hydroelectricity plant is capable of responding to a surge in peak power demand in minutes. [3] At night, excess power on the grid generated by conventional coal and nuclear plants is used to pump water to the upper Rockview Dam overlooking Gordon's Bay. It is regarded [by whom?] as a forerunner in environmental engineering.
Between the generating station and consumer, electric power may flow through several substations at different voltage levels. A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages. They are a common ...
The power station building was designed by the Edinburgh architects Tarbolton & Ochterlony. Harold Tarbolton was an architectural advisor for the North of Scotland Hydro-Electric Board. Following Matthew Ochterlony 's death in 1946, the scheme was progressed by Tarbolton, but he died in July 1947, and his architectural practice managed the ...
When line commutated converters are used, the converter station will require between 40% and 60% of its power rating as reactive power. This can be provided by banks of switched capacitors or by synchronous condensers, or if a suitable power generating station is located close to the static inverter plant, the generators in the power station ...
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