Electricity rates in Great Lakes and Port Stephens Opinion by News Of The Area - Modern Media - July 15, 2016July 16, 2016 Dear News Of The Area, DO the residents of Great Lakes realise that, they, together with 4/5 of NSW subsidise the city areas as regards Electricity. 4/5 of NSW is covered by Essential Energy and Endeavor Energy and pay an Electricity Supply Charge (SAC) [thats to have it go past your house] of around