Are you suggesting these are bad things? I think they're positive however, it varies wildly across different locations and demographics.
> I would like to see how much energy the average Australian household consumes.
Again, an average figure wouldn't be that insightful, as there are probably massive differences in different populations. Additionally, building standards change things considerably (presence or lack of insulation, double glazing, ceiling height, aspect) - certain eras and locations (often due to regulations) get these things right, others don't.
I'm not sure how much consumption would go up if power got cheaper, but mine sure would... I really dislike being cold inside my own house. That said, I much prefer living in Australia to the U.S., especially while raising a family.