• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

How Do We Get Useful Energy From Hydroelectricity ?

Extracts from this document...


How Do We Get Useful Energy From Hydroelectricity ? * Flowing water creates energy that can be captured and turned into electricity. * The most common type of hydroelectric power plant uses a dam on a river to store water in a reservoir. Water released from the reservoir flows through a turbine, spinning it, which in turn activates a generator to produce electricity. * Hydroelectric power doesn't necessarily require a large damn. Some hydroelectric just use a small canal to channel the river water through a turbine. * Another type of hydroelectric power plant- called a pumped storage plant- can even store power. The power is sent from a power grid into the electric generators. The generators then spin the turbines backward, which causes the turbines to pump water from a river or lower reservoir to an upper reservoir, where the power is stored. ...read more.


are all needed for coal-fired stations * Hydroelectric plants are generally less expensive to run than other generating plants Disadvantages of Hydroelectricity * The construction of hydroelectric plants is expensive * One cannot build hydroelectric plants just anywhere: they are site specific * Hydroelectric plants can have a negative effect on river flow and water supply * The construction of hydroelectric plants usually means that areas of land will be flooded. People and/or animals may lose their homes What Is Hydroelectricity Used For? * Electricity * Moving water is a responsible for lighting entire cities, even countries * Accounts for 15% of the world's (2% UK) electricity * Power plants convert kinetic energy in falling water to electricity * The energy in flowing water is from the sun, and constantly being renewed. ...read more.


devices that will produce electricity * According to NREL (National Renewable Energy Laboratory), the most common hydroelectric power source is currently designed to use a dam on a river to block and store the water in a reservoir. When the water is released, it flows through a turbine device, which produces enough wattage to activate a generator, and in turn produce electrical power * There are several other types of hydroelectric power plants, such as a "pumped storage plant," which even has the capabilities of retaining power and storing it for periods of time Factors Affecting Location of HEP plant * Amount of precipitation in an area * Not be suitable in south east England due to less precipitation therefore not very efficient * Suitable in the north due to more precipitation. * Geology of the area http://www.nrel.gov/clean_energy/hydroelectric_power.html http://www.energex.com.au/switched_on/project_info/electricity_production_other_advantages.html#HYDRO http://www.altenergy.org/2/renewables/hydroelectric http://www.iclei.org/efacts/hydroele.htm ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Green Plants as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Green Plants as Organisms essays

  1. Three Gorges Dam Essay.

    The South-to-North project will include Beijing, but bring dirty water to the city will not help with the development that is intended, the water in the Yangtze must be cleaned up! Downstream from the dam, floods may be less frequent but there are other disasters waiting to happen.

  2. Nuclear Power

    You need hot rocks of a suitable type, at a depth where we can drill down to them. The type of rock above is also important, it must be of a type that we can easily drill through. * Sometimes a geothermal site may "run out of steam", perhaps for decades.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work