19 Facts About Hydroelectric power


HydroHydroelectric power can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems.

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HydroHydroelectric power has been used since ancient times to grind flour and perform other tasks.

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In 1878, the world's first hydroelectric power scheme was developed at Cragside in Northumberland, England, by William Armstrong.

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At the beginning of the 20th century, many small hydroelectric power stations were being constructed by commercial companies in mountains near metropolitan areas.

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Hydroelectric power stations continued to become larger throughout the 20th century.

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Hoover Dam's initial power station was the world's largest hydroelectric power station in 1936; it was eclipsed by the Grand Coulee Dam in 1942.

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The Hydroelectric power extracted from the water depends on the volume and on the difference in height between the source and the water's outflow.

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Tidal Hydroelectric power station makes use of the daily rise and fall of ocean water due to tides; such sources are highly predictable, and if conditions permit construction of reservoirs, can be dispatchable to generate Hydroelectric power during high demand periods.

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Tidal Hydroelectric power is viable in a relatively small number of locations around the world.

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Micro hydro systems complement photovoltaic solar energy systems because in many areas water flow, and thus available hydro Hydroelectric power, is highest in the winter when solar energy is at a minimum.

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An underground Hydroelectric power station is generally used at large facilities and makes use of a large natural height difference between two waterways, such as a waterfall or mountain lake.

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HydroHydroelectric power is a flexible source of electricity since stations can be ramped up and down very quickly to adapt to changing energy demands.

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In 2021 the IEA estimated that the "reservoirs of all existing conventional hydroHydroelectric power plants combined can store a total of 1 500 terawatt-hours of electrical energy in one full cycle" which was "about 170 times more energy than the global fleet of pumped storage hydroHydroelectric power plants".

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When used as peak power to meet demand, hydroelectricity has a higher value than baseload power and a much higher value compared to intermittent energy sources such as wind and solar.

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Nuclear Hydroelectric power is relatively inflexible; although it can reduce its output reasonably quickly.

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Since the cost of nuclear Hydroelectric power is dominated by its high infrastructure costs, the cost per unit energy goes up significantly with low production.

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Wind Hydroelectric power goes through predictable variation by season, but is intermittent on a daily basis.

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Conversely, in some cases wind Hydroelectric power can be used to spare water for later use in dry seasons.

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HydroHydroelectric power is produced in 150 countries, with the Asia-Pacific region generated 32 percent of global hydroHydroelectric power in 2010.

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