Vast arrays of solar power would make sense in Australia, but it's still much cheaper to dig up coal and burn it. Nuclear power is out of the equation and will never happen, despite Australia being one of the world's top uranium exporters.
Power here is expensive and growing at more than 10%/year, and that's before a carbon emissions tax (if that ever happens). Australia is an expensive place to live. Our housing costs triple that of the US market (post bubble) and I buy pretty much everything I can online from the USA and England to avoid the local retailer and distributor price gouging. Books are half price off Amazon.com, inc air mail, etc.
If its any consolation, the australian housing bubble will pop at some point, so you will be able to buy a house cheaper.