An underground power station is a type of hydroelectric power station constructed by excavating the major components (e.g. machine hall, penstocks, and tailrace) from rock, rather than the more common surface-based construction methods.
Often underground power stations form part of pumped storage hydroelectricity schemes, whose basic function is to level load: they use cheap or surplus off-peak power to pump water from a lower lake to an upper lake, then, during peak periods (when electricity prices are often high), the power station generates power from the water held in the upper lake.
Read more about Underground Power Station: Notable Examples
Famous quotes containing the words underground, power and/or station:
“An underground grower, blind and a common brown;
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—Richard Wilbur (b. 1921)
“Power and violence are opposites; where the one rules absolutely, the other is absent. Violence appears where power is in jeopardy, but left to its own course it ends in power’s disappearance.”
—Hannah Arendt (1906–1975)
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—Angelina Grimké (1805–1879)