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)
“I had some short struggle in my mind whether I should resign my lover or my liberty, but this lasted not long. I found myself as free as air and could not bear the thought of putting myself in any man’s power for life only from a present capricious inclination.”
—Sarah Fielding (1710–1768)
“[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)