yr right:
The turbines in WA or SA. Do they have lights in the tops of the shafts.
Every wind turbine I've seen, has a red light (or sometimes two) - otherwise known as hazard beacons - as required, per CASA regulations "Aerodrome Lighting, Chapter 12, Section 2 - Obstacle Lighting".
https://www.google.com.au/url?sa=t&r...74115972,d.c2E
Binghi - Your link to windfarm efficiency is a classic of cherry-picking out the parts that appeal to the argument. According to your map in your link, W.A. does not exist, and has no windfarms.
I'm not surprised - in my experience, most Eastern Staters have always considered that nothing exists West of the Nullarbor Plain - because NSW, VIC., and QLD., are the centre of the universe, around which Australia revolves.
You might want to advise the windfarm map website that W.A. is actually a real State, populated by 2.5M people, not just 2.5M 'roos - and we happen to have a total of 7 fully functioning windfarms, with more than 450MW capacity, that achieve a lot more than 30% efficiency (actually, there are 12 windfarms, counting all the smaller ones).
List of wind farms in Western Australia - Wikipedia, the free encyclopedia
A comprehensive overview of W.A. windfarms -
http://ramblingsdc.net/Australia/WindWA.html