I was wrong on the amount of power it will generate towards the national Kyoto goals.
http://story.news.yahoo.com/news?tmp...ower_col&ncid=
The story says " It will generate about 650 gigawatt hours (GWh) a year toward Australia's mandated renewable energy target, which requires electricity retailers to supply 9,500 GWh of renewable energy a year by 2010."
So not 1/50th of the power, more like 1/15th of the power they want to go towards Kyoto.
If one gets the land for free perhaps it is cost-effective.