We've reached peak oil. Coal-burning is unsustainable environmentally. But we have options. Let's explore them. Biogas, solar, wind, wave power are all there, but the most promising is geothermal. If we can tap the heat of the Earth's mantle (drill down to the "hot rock"), we have a truly endless supply of energy.
It is proposed that Australia should lead the development of "hot rock" electricity generation.