Project general manager Mark Greenaway said in a project update that the timeline for the terminal was under review due to the global financial downturn.
He said customer demand might force the 2012 completion date to be pushed back.
Late last year 16 coal companies agreed to pump $A4 billion into the port development after the Queensland government gave the consortium preferred developer status.
The consortium is made up of Anglo Coal Australia, Aquila Resources, BHP Billiton, BHP Billiton Mitsubishi Alliance, Caledon Coal, Cockatoo Coal, Felix Resources, Jellinbah Resources, Macarthur Coal, Northern Energy Corporation, Qcoal, Rio Tinto Coal Australia, Syntech Resources, Vale Australia, Wesfarmers Curragh and Xstrata Coal Queensland.
The project is currently 40% complete and significant progress has been made on the design of the rail receival station and site-wide infrastructure.
The route of the overland conveyor has been changed to minimise the environmental impact.