What do you do if the electricity grid is under strain, major users are being paid to stay off it on days of high demand and reliable, conventional power plants are being retired with no replacements? If you are the state of NSW you ignore this problem and certainly pay no attention to the troubles of the American state of California where extensive reliance on renewable energy has resulted in a rolling series of blackouts during a heatwave – a problem that neighbouring states facing the same conditions but with fewer renewable projects have managed to avoid.