Quick Answer

The NEM (National Electricity Market) is one of the largest interconnected electricity systems in the world. It covers around 40,000 km of transmission lines and cables, supplying around 9 million customers.

The NEM is a wholesale market through which generators and retailers trade electricity in Australia. It interconnects the six eastern and southern states and territories and delivers around 80% of all electricity consumption in Australia. Tasmanian energy retailers are part of the NEM.

Read more about the National Electricity Market here