[待更新] Ausgrid has been operating for more than 100 years and has the largest electricity network in Australia. It supplies power to 1.7 million homes and businesses throughout Sydney, the Hunter and the Central Coast.***The network is made up of more than 200 large electricity substations, 500,000 power poles, 30,000 small distribution substations and almost 50,000km of below and above ground electricity cables.el 2 ASP Level 3 Accreditation Authorisation Safety Alerts and Notices Service and installation inf...