100% Renewable Energy in Australia

Here's a fun proposal from an Australian advocacy group, Beyond Zero Emissions, claiming that in 10 years all of Australia's energy can come from renewable energy sources. I find this hard to believe...

At the moment 80% of Australia's energy comes from coal power plants, with less than 2% from wind and solar energy. This plan calls for 60% of total energy to be produced by concentrating solar power plants and the other 40% to come from wind turbines. This seems like a wonderful plan, but putting these proposals into effect will take forever, not to mention the cost of building these facilities.

Here's the link.