There is a good article in this weeks BRW about geothermal energy. It is a bit of a no brainer, but as we head towards a carbon tax on emissions, these forms of alternative energy production are starting to come inter their own.
The mathematics of geothermal isn't in it's favour at the moment, coming in around $12-20 megawatt more than the cheapest form of electricity generation. But if a carbon credit comes into play, suddenly geothermal starts looking more feasible.
Surely this form of energy production makes more sense than pursuing a nuclear future for Australia.