The Cruachan Power Station is a pumped-storage hydroelectric power station in Argyll and Bute, Scotland. The scheme can provide 440MW of power and has a capacity of 7.1 GWh. The turbine hall is located inside Ben Cruachan, and the scheme takes water between Cruachan Reservoir to Loch Awe, a height difference of 396 metres . It is one of only four pumped storage power stations in the UK, and is capable of providing a black start capability to the National Grid. Construction began in 1959 to coincide with the Hunterston A nuclear power station in Ayrshire. Cruachan uses cheap off-peak electricity generated at night to pump water to the higher reservoir, which can then be released during the day to provide power as necessary. The power station is open to visitors, and around 50,000 tourists visit it each year.
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