Almost all Australian states follow a similar basis of rules which are established off the European standard EN15194. In essence all e-bikes must; Not exceed 250W (Some states eg. NSW is 500W) Be propelled purely by pedal assist only and the pedals have to be used to keep the motor operating (a pedalec) Must not be operated purely by Throttle Must not be capable of exceeding 25km/h  Abide by local law such as, wearing helmets, riding within speed limits in set areas etc So the short story is that e-bikes are legal to use in Australia yes! Also with this in mind means you do not require any special licensing to ride! However be sure to check with your local authority as to any other regulations in your area.