Australia has been one of the world's leading proponents of privatisation. One of the key arguments about privatisation is that it would end the inefficient state monopoly of public services and reduce the power of public sector trade unions. Within a relatively short period of the privatisation of the energy and transport sectors in Victoria Australia, there was a reconsolidation of ownership which raised new challenges for the trade unions. After this phase, the main trade unions in these two sectors took steps to meet these new circumstances to renew and rebuild their structures and strengthen their capacity to challenge the new private oligopolies. Thus, paradoxically some unions were able to open up space to renew and rebuild in the postprivatisation world.