Wind Turbines, Clean And
Earth-friendly Energy
Today we have the technology and the capability
to wean ourselves from dependence on polluting and dangerous
power plants by using clean, safe and affordable clean energy
sources such as wind turbines. Modern
windmills produce no pollutants at all. By using wind power
mankind is preventing pollution that would have been otherwise
have been generated by a utility company coal-fired power
station, for instance.
Wind energy production can
amount a great reduction of air pollution over time. Over its
life, a small wind turbine can offset 1.2 tons of pollutants
and 200 tons of greenhouse gases. Even a modern wind farm,
where dozens upon dozens of wind power
generators produce electricity commercially to supply
utilities, meets the criteria of “clean energy”.
But wind farms had a bad press early in their
evolution. These concerned the old-fashioned wind powered
turbines of the sixties and seventies in California and
elsewhere. These small turbines were noisy and populated the
countryside densely. This earned them the disparagement of
critics. These relatively primitive windmills also required
constant maintenance, leading people to criticize them for
being costly to operate. Nature lovers were quick to point out
that bird died by the hundred in their rapidly spinning rotors.
It was claimed too that the downwind side of the turbines
disrupted low-level winds.

Fortunately modern wind generators have evolved into
highly efficient and even beautiful energy sources and are
fast becoming a “conventional” energy alternative in areas
where there are high winds and where the electricity
supplied by the utilities is expensive. Modern turbines can
rise to 500 feet above the ground, with the rotors
capturing the strongest winds to produce reliable
electricity. Modern wind turbines are almost silent and
rotate so slowly in terms of revolutions per minute that
they are rarely a hazard to birds.
Undoubtedly
a modern wind farm, when installed on agricultural land, has
one of the lowest environmental impacts of all energy sources.
It occupies less land area per kilowatt-hour (kWh) of
electricity generated than any other energy conversion system,
apart from rooftop solar energy, and is compatible with grazing
and crops.
There are some interesting
statistical facts connected with modern wind turbines. They
generate the energy used in their construction in just a few
months of operation. Greenhouse gas emissions and air pollution
produced by their construction, such as by trucks and vans
carrying equipment, are small and declining. Absolutely no
emissions or pollution results from their operation.
Landscape and heritage damage due to wind farms are avoided
when there is proper planning. There is therefore much to
recommend wind energy above every other form of
electricity generation.
So it is quite surprising to learn that clean, renewable energy
like solar and wind power currently produces only about 2% of
electricity in the United States. By contrast, nearly 90
percent of that country’s electricity still comes from
polluting energy sources like coal and nuclear power.
Coal-burning power plants are the world’s largest source of
carbon dioxide, the heat-trapping gas that causes global
warming. Coal-fed power plants are also responsible for
pollution that harm human health and worsen environmental
problems like acid rain, smog and water pollution. That is as
persuasive an argument in favor of wind turbines as you will
ever hear.
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