The South Australian black out — A grid on the edge. There were warnings that renewables made it vulnerable per JoNova

If you'd like more than pro green energy propaganda then best ignore the eco loons at the BBC and read this from the excellent Jo Nova http://joannenova.com.au/2016/09/the-south-australian-black-out-a-state-running-without-enough-thermal-reserve-to-cope-with-contingencies/#more-51017