BAEconomics has produced a new study regarding international energy generation and the shift from traditional to renewable sources.
The authors find that as the production of intermittent generation increases, the costs of integrating intermittent supply increase rapidly.
Translated to Australia, this experience suggests that integration costs range from $37 to $54 a megawatt hour as wind generation reaches 30 to 40 per cent of electricity output.
The full article can be found at the following link:
http://www.baeconomics.com.au/wp-content/uploads/2016/08/Renewables-and-electricity-16Aug16.pdf