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hydroelectricity

World Encyclopedia | 2005 | Â© World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

hydroelectricity Electricity generated from the motion of water. In all installations, this energy of movement, or kinetic energy, is first converted into mechanical energy in the spinning blades of a water turbine, and then into electricity by the spinning rotor of a generator. Many power stations are driven by water held back by large dams to regulate flow, such as the Hoover Dam in the USA. Hydroelectric power (HEP) provides cheap energy for mountainous areas with high rainfall.

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hydroelectric

The Oxford Pocket Dictionary of Current English | 2009 | © The Oxford Pocket Dictionary of Current English 2009, originally published by Oxford University Press 2009. (Hide copyright information) Copyright

hy·dro·e·lec·tric / ˌhīdrōəˈlektrik/ • adj. relating to or denoting the generation of electricity using flowing water (typically from a reservoir held behind a dam or other barrier) to drive a turbine that powers a generator. DERIVATIVES: hy·dro·e·lec·tric·i·ty / -əlekˈtrisitē/ n.

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	FEATURE/Hydroelectric Technology from Turbine Manufacturer Voith Supports U.S. Quest for Independent Supply of Power. Business Wire; 10/8/2003
	Fitch Rates Grant PUD's Hydroelectric Development Revenue Bonds 'AA'. Business Wire; 1/27/2003

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