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let us learn about tidal energy.
Tidal power or tidal energy is a form of hydropower
that converts the energy obtained from tides
into useful forms of power, mainly electricity.
Although not yet widely used, tidal energy
has potential for future electricity generation.
Tides are more predictable than the wind and
the sun.
Among sources of renewable energy, tidal energy
has traditionally suffered from relatively
high cost and limited availability of sites
with sufficintly high tidal ranges or flow
velocities, thus constricting its total availability.
However, many recent technological developments
and improvements, both in design (example,
dynamic tidal power, tidal lagoons) and turbine
technology (example, new axial turbines, cross
flow turbines), indicate that the total availability
of tidal power may be much higher than previously
assumed, and that economic and environmental
costs may be brought down to competitive levels.
Historically, tide mills have been used both
in Europe and on the Atlantic coast of North
America.
The incoming water was contained in large
storage ponds, and as the tide went out, it
turned waterwheels that used the mechanical
power it produced to mill grain The earliest
occurrences date from the Middle Ages, or
even from Roman times The process of using
falling water and spinning turbines to create
electricity was introduced in the U.S. and
Europe in the 19th century.
The world's first large-scale tidal power
plant was the Rance Tidal Power Station in
France, which became operational in 1966.
It was the largest tidal power station in
terms of output until Sihwa Lake Tidal Power
Station opened in South Korea in August 2011.
The Sihwa station uses sea wall defense barriers
complete with 10 turbines generating 254 mega
watt.
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