By Nirvan Rohira
WHAT ARE THEY
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Hydroelectric power is power that has been created using water
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It is created by the use of turbines
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Water has to be present at a great height to form this power
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It is one of the oldest and most established form of renewable
energy
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A damn has to be created
HOW IS IT USED TO CREATE POWER
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Hydroelectric power is generated by falling water
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Water must fall a great height for any power to be generated
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As the water falls, it generates a large force
HOW IS IT USED TO CREATE POWER
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This is because it falls from a large height
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Turbines present at the bottom
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This large force turns the turbine
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Turbine generates electricity
ADVANTAGES
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Free energy
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Inexhaustible

Clean
DRAWBACKS
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Location Dependent
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High initial costs
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Change in ecology
PRINCIPLE OF WORKING OF
HYDROELECTRIC POWER
EFFICIENCY
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Large Hydroelectric power generators have a 95% efficiency
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Small Hydroelectric power generators have between 80 – 85%
TYPES OF STATIONS
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Impoundment
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Diversion
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Pumped Storage
IMPOUNDMENT
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Most common type
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Uses a damn to store water
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Typical hydro power station
DIVERSION
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More of a natural type
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Also known as run-off power stations
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Channel made in a prevalent river through a canal
PUMPED STORAGE SYSTEMS
CITATIONS
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Physics for the IB Diploma, 6th Edition – K.A.Tsokos
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https://www.mpoweruk.com/hydro_power.htm
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https://www.energy.gov/eere/water/types-hydropower-plants
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https://www.americanexperiment.org/2019/01/peter-fosteranother-report-reluctantly-admits-green-energy-disastrous-flop/
THANK YOU