Hydroelectric power generation, or the conversion of potential energy of reservoir water to electricity, makes up about 20% of all electricity generation in the world today, and is by far the largest source of electricity generation among renewable energy sources, according to the REN21 2006 Global Status Report. (PDF)
History of Worldwide Hydroelectric Power
For centuries, water flow has been harnessed for mechanical power generation, and innovations in capturing and managing water flow led to the Industrial Revolution in England and the United States. The first hydroelectric project in the United States was installed in 1882 in Appleton, WI. A water wheel was used to power a generator, delivering electricity to two paper mills.
In the 1880s and 1890s, many hydroelectric plants were built in Canada, Australia, the United States, and Chile.
Top Worldwide Hydroelectric Power Generators
The top five hydroelectric power producing countries are:
China – 585.2 TWh
Canada – 369.5 TWh
Brazil – 363.8 TWh
United States – 250.6 TWh
Russia – 167.0 TWh
This data is based on the findings of the BP Statistical Review – Full Report 2009.
Brazil, Canada, Norway, Switzerland and Venezuela create a majority of their total electricity generation using hydroelectric dams. In comparison, China’s hydroelectric power makes up only 17% of its total electricity generation.
Top Hydroelectric Power Facilities
The top five hydroelectric power facilities in the world are:
Three Gorges Dam in China – 18.3 GW (2008)
Itaipu Dam between Paraguay and Brazil – 14 GW
Guri Dam in Venezuela – 10.2 GW
Tucurui Dam in Brazil – 8.4 GW
Grand Coolee Dam in the United States – 6.8 GW
The Three Gorges Dam in China is expected to remain as the largest hydroelectric power plant in the world when it reaches it’s peak capacity of 22.5 GW in 2011. There are no projects currently under construction that would match this capacity, although the proposed Red Sea Dam and Inga Dam concepts would exceed the capacity of Three Gorges.
However, these projects are simply concepts at the current time. India’s Upper Siang Hydroelectric Project, which began construction in April 2009 and scheduled to be completed in 15 to 20 years, has a projected capacity of 11 GW. This will make this dam the third largest by production capacity in the world.
Hydroelectric power generation is one of the oldest power generation methods, and the most widely used of all renewable energy sources. It is a critical part of world power generation, and will continue to expand due to its reliance on natural land features, lack of emissions, and non-reliance on fossil fuels.
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