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:
“Or as, when an underground train, in the tube, stops too long between stations
And the conversation rises and slowly fades into silence
And you see behind every face the mental emptiness deepen
Leaving only the growing terror of nothing to think about....”
—T.S. (Thomas Stearns)
“The reduction of nuclear arsenals and the removal of the threat of worldwide nuclear destruction is a measure, in my judgment, of the power and strength of a great nation.”
—Jimmy Carter (James Earl Carter, Jr.)
“[T]here is no situation so deplorable ... as that of a gentlewoman in real poverty.... Birth, family, and education become misfortunes when we cannot attain some means of supporting ourselves in the station they throw us into. Our friends and former acquaintances look on it as a disgrace to own us.... If we were to attempt getting our living by any trade, people in that station would think we were endeavoring to take their bread out of their mouths.”
—Sarah Fielding (1710–1768)