The logo for Australia's biggest electricity network Ausgrid adorns the headquarters building in central Sydney, Australia, July 25, 2016. REUTERS/David Gray/File Photo

The logo for Australia’s biggest electricity network Ausgrid adorns the headquarters building in central Sydney, Australia, July 25, 2016. REUTERS/David Gray/File Photo

The logo for Australia's biggest electricity network Ausgrid adorns the headquarters building in central Sydney, Australia, July 25, 2016. REUTERS/David Gray/File Photo

September 23, 2016 3:37 AM (UTC+8)