What about wind?
When I was heading out of San Fran we went past the most amazing landscape of thousands of wind turbines. While they may not be capable of being the only answer to sustainable energy, they certainly should be a bigger part of the solution in an agricultural country like Australia. I'm particularly interested that cattle can graze on the land at the same time meaning the space can be used to further potential. And i think they look amazing which seems to be the greatest argument against them. And surely anything looks better than a nuclear power plant? Can you imagine what the cows would look like if they grazed near there?

For and against in plain terms from the BBC:
http://www.bbc.co.uk/dna/actionnetwork/A2369892