Tidal Power and Pakistan
Definition
• It is a renewable method of producing electricity by using the movements of the tides.
• The tide comes in and out once, and usually twice, in every 24 hours.
• This is due to the gravitational pull of the moon.
Process of electricity generation
• Along with Tidal power generator a barrage (dam) is built across a river estuary (inlet) and water is pushed through a turbine and generator (fitted into tunnels in the barrage) as the tide comes in and goes out.
• For shipping to be able to pass, locks are built into the barrage which can be opened to allow the safe passage.
Benefits of Tidal Power
• There are obvious benefits to this type of tidal power generation for example the barrage can act as a road bridge, and the nearby coastline is protected from powerful waves.
Advantages of Tidal Power
• It is renewable
• It provides constant supply
• It is relatively non pollutant
Challenges
• Such schemes would be very expensive to build
• It would destroy important wildlife habitats
• It could disrupt local shipping if arrangements are not made for it.
The Tidal Power Potential in Pakistan
• The power resource potential of the Indus Deltaic Creek System is a great asset for future energy supply in Sindh, Pakistan.• The National Institute of Oceanography (NIO) shows encouraging results in its initial survey.
• The creek system of the Indus delta extends over an area of 170 km.
• Tidal water flows in these creeks with high velocity which is a favorable requirement for the extraction of energy from tidal currents.
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