Yes, that's why we have to become more efficient with our energy use,
so we can bring demand down to a level that can be met by renewable
sources. The less resources we use, the fewer birds get displaced
and killed.
Regards, Laurie.
On Tuesday, April 11, 2006, at 02:54 PM, MetaSense Pty Ltd wrote:
After reading the posts of windfarms I was interested in relative
sizes of windfarms vs the Latrobe valley power stations (for example),
although I have never been there so I can't make judgements.
The capacity of the 4 major LaTrobe powerstations is about 6000
Megawatts and presumably is able to supply most of this capacity more
or less continuously.
The windfarm which I know, the Albany windfarm, has windmills with a
capacity of about 2 MW. However this is only achievable in
sufficiently strong winds so the average generating capacity is very
much less.
The towers are about 65 metres high and the rotors which are affixed
to the top of the towers are about 50 metres in diameter. Since each
windmill interferes with the airflow they need to be spaced
sufficiently far apart to minimize this effect. As a result the
maximum density is apparently around 4 to 5 per square kilometre. ie.
one would need about 6000 windmills spread over about 1000 square
kilometres to equal the capacity of the LaTrobe valley power stations.
Within this area the maximum distance you would be from a windmill
would be about 200 - 300 metres.
Of course one could have many, smaller concentrations spread over the
landscape.
Cheers
Andrew
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