Renewable energy resources include the resources which are
regularly generated or created by natural processes or can be generated by processes
such as farming. Because of this the renewable sources of energy do not get depleted
with use. These include a range of different sources such as hydro power, solar power,
wind power, geothermal power, tidal power, vegetable oil, and alcohol made form sugar
cane and other vegetable products. Different sources of renewable energy present
different advantages and disadvantages. However one common advantage of such sources is
that they don't get depleted with with use. Also most of the renewable energy sources
produce energy without creating environmental pollution in form of exhaust gases from
burning of fuel. Burning of Alcohol produces much less pollution. However, use of
vegetable oils as fuel can be as polluting as the non-renewable energy
source.
The biggest disadvantage for most of the sources is
that technology for producing energy economically on a large scale is not available.
Also while there is no depletion of these source of energy, there is limitation on the
total rate of power that can be generated. Also this maximum rate is also fluctuates
from time to time. For example solar power is available only during the day, and
hydro-power availability fluctuates with availability of water for generation, which
fluctuates heavily with seasonal variations.
The
non-renewable energy resources primarily refer to the energy that is available form
burning of fossil fuel such as coal and petrol. The two biggest disadvantages of this
source are the limited stock of such fuel in the world, and pollution. Fossil fuel
stocks have been created by earth's natural processes over millions of years. The rate
at which we are now using these resources is very high, while the rate of creation of
such new stocks is practically zero. In such condition the humanity is likely to run out
of the stocks of non-renewable fossil fuel in foreseeable future. Also burning of fossil
fuel creates environmental pollution which is likely to have very serious negative
impact on the very existence of humanity.The biggest advantage of fossil fuel is
availability of a very well developed technology for producing and using
them.
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