QUESTIONS: |
· How many households will turbines supply
with
electricity?
· Will
TV reception be affected?
· Will
the value of my property be affected?
· How
much does a wind farm project cost?
· How
many jobs will be created?
· What
effect has a wind farm on electricity prices?
· Power
quality / security of supply?
· How
noisy are the turbines?
· How
much space is needed to install a turbine?
· How
far apart are turbines spaced ?
· How
is the electricity transported?
· Will
there be navigation lights on the turbines?
· Why
are turbines painted white?
· What
kind of effect on wildlife may occur?
· How
much Greenhouse Gases could be reduced?
· Will
there be a public display / information area?
· Does
wind farming affect tourism? |
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ANSWERS: |
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How many households will
turbines
supply with electricity?
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A modern
1.75 MW wind turbine will produce approximately 5 million
kilowatt hours of generation in a year. This is equivalent to the
annual electricity consumption of 900 to 1000 households.
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Will TV reception be
affected? |
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Electromagnetic
Interference is unlikely to occur. If it does occur, it
can be easily mitigated by installation of a repeater.
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Will
the value of my property be affected? |
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Local and
International evidence indicates, that values for properties
in close proximity to a wind farm are not adversely affected by the
development.
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How much does a wind
farm project
cost? |
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In general
terms it costs approximately NZ$1.65 million per turbine
installed. Therefore, a 20 turbine wind farm the total cost is NZ$33
million.
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How many jobs will be
created? |
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The wind
industry in 2001 provided more than 50,000 jobs worldwide.
Depending on the size, a wind farm development will create 30 to 50
local jobs during construction and at least 3 to 5 full time permanent
jobs for operation and maintenance.
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What effect has a wind
farm on
electricity prices? |
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Generally, an increase in generation leads to greater supply which
should based upon normal economic theory results in prices, increasing
at a slower rate than would have been otherwise the case.
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Power quality / security
of supply? |
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Additional generation should increase the power quality in the area and
the security of supply.
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How noisy are the
turbines? |
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Large,
modern wind turbines have been designed to be quiet. At
distances greater than 200 meters, the swishing sound of rotor blades
is usually masked completely by wind noise in the leaves of trees or
shrubs. At 500 meters their noise levels will be comparible to a quiet
bedroom at night.
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How
much space is needed to install a turbine? |
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Wind
turbines and access roads occupy less than three per cent of the
area in a typical wind farm. The remaining 97 per cent of the land can
be used for farming or grazing, as usual.Thus wind farms result in
rural land being used more productively.
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How far apart are
turbines spaced ? |
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In a wind
farm, a turbine must generally be spaced between three to
seven rotor diameters from any other turbine in order not to effect the
operation of another too much. For a 1.75 MW turbine they would be
spaced about 200 meters to 500 meters apart.
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How is the electricity
transported? |
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On a wind
farm site the transmission cable will be buried. Off-site
transmission lines will be used to connect the wind farm to the local
grid.
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Will there be navigation
lights on
the turbines? |
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Navigation lights are only required on structures with a height greater
than 110 meters.
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Why are turbines painted
white? |
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There is no
evidence to
suggest that wind farms detract tourists,
indeed many wind farms are themselves tourist attractions with local
operators running successful tourist ventures based on the wind farm
(for example Tararua Wind Farm, North Island, New Zealand)
White is generally accepted as being the least intrusive colour for a
wind turbine. A very light grey is also sometimes used. In either case
a special non-reflective paint is used to minimise visual impact.
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What kind of effect on
wildlife may
occur? |
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Wind
turbines will not have an adverse effect on wildlife in the
region. As part of the permitting process extensive studies have or
will be undertaken to assess the potential impact of the wind farm on
wildlife.
Deer and cattle habitually graze under wind turbines, and sheep seek
shelter around them.
While birds tend to collide with man-made structures such as buildings,
they are very rarely affected directly by wind turbines.
Falcons are in fact nesting and breeding in cages attached to two
Danish wind turbines!
Studies from the Netherlands, Denmark, and the US show that the total
impact on birds from wind farms is negligible compared to the impact
from road traffic.
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How
much Greenhouse Gases could be reduced? |
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A modern
1.75 MW wind turbine in an average location will annually
displace approximately 7,000 tonnes of carbon dioxide from other
electricity sources, i.e. usually coal fired power stations.
This equals the emissions of about 1600 average cars.
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Will
there be a public display / information area? |
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Wind Farm Developments (Australia) Ltd makes
provision in proposed developments for a public display area.
The location of this display area will be determined in consultation
with the local community.
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Does
wind farming affect tourism? |
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There is no
evidence to suggest that wind farms detract tourists,
indeed many wind farms are themselves tourist attractions with local
operators running successful tourist ventures based on the wind farm
(for example Tararua Wind Farm, North Island, New Zealand)
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