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Power Stations

What is a Power Station?

A power station converts a primary energy source into
electricity. Electricity is called a secondary energy source.
Electricity is a very useful form of energy because it
can be used to do so many different things and electrical
is easily transmitted over long distances. See
the next page for how a power station generates electricity.

What are Primary Energy Sources?

The primary energy sources used to generate electricity
may be non-renewable, for example nuclear or fossil fuels,
or they may be renewable, for example wind, wave,
hydroelectric, tidal, solar, geothermal and biomass.

What do Renewable and Non-renewable mean?

Renewable means that the energy source will not run out.
It is constantly renewed (for example wind or solar) or it can
be replaced as quickly as it is used (for example biomass).

Non-renewable means that there is only a certain amount
of the resource. Once it is used up, it cannot be replaced.

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