INGLÊS
About 20% of the electricity generated worldwide comes from hydropower.
In rough numbers, only in Brazil, hydroelectric power accounts
for 75 million KW. They are 158 plants in
operation, nine other plants are under construction and 26 are granted (allowed
to be built).
The
largest dam
in the world is still the Itaipu
power plant owned by Brazil and
Paraguay. Located Itaipu on the Parana River has a capacity of 13,300 MW, accounting for 20% of national demand and
95% of the demand Paraguayan electricity.
But in 2009, Itaipu
will lose its title of world's largest for the Three Gorges Dam being
built on the Yangtze River, China. Three Gorges
Dam will have a capacity to produce 85 billion kWh.
Of course, the environmental impacts of these two major projects are
as colossal as themselves:
Three Gorges Dam will
swallow 13 cities, 4500 villages and 162 archaeological
sites are very important for China.
Not to mention the impacts on flora, fauna, soil, changes
in the microclimate of the region, the hydrological cycle and the thousands of
people who had to be relocated.
*(OPINION)
In fact the
hydroelectric plants are a renewable
energy source, but that does not mean
that they are environmentally friendly, or that are less harmful than
other sources universally harmful.
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