Now there's so many private solar parks and panels on people's houses that sub stations can't handle it, if the panels are put in where only low voltage is supposed to be, and the owners won't turn them off because they make money by having them on (government incentives) so the result is over stressed substations set on their max taps (what controls the output voltage) if it goes over that they have to get turned off or explode. I reckon when the sun is out there's gonna be some big fires.