Cost of 3 kW solar system in OZ

This is the cost of the panels.  The cost of the electricity produced would have fallen pro rata.

This is why coal is finished.  This is why the world will move to reduce emissions at the Paris conference in November/December later this year.  Not just because global warming is real and terrifying, but because the costs of the alternative are lower than existing power sources, even without a carbon tax/cap-and-trade.  With them, solar will sweep away coal.