More than three million tonnes of grain were exported from the Port Kembla terminal last shipping year thanks to a bumper season and strong international demand.
The figure was up almost one million tonnes on the previous year and was a marked improvement on 2007-08 when the effects of the drought meant no grain was exported.
"We've seen a really good year," a GrainCorp spokesman said.
"There's plenty of grain in the system.
"The real positive is, we've had a busy period of exports ... [and] we're likely to see that continue."
Australian grain - which includes wheat, barley and canola - is highly sought after by international flour millers, feedlots and grain producers.
A growth in population in Asia and other regions has also increased demand, while quality has improved after the previous two crops were affected by wet weather.
"It's really good, bright-coloured grain. That's why it's been particularly sought after," the spokesman said.
Port Kembla grain terminal acting manager Brendan Moss has seen a huge increase in output levels.
"If the farmers don't get a crop, we don't export anything," Mr Moss said. "We've gone from not exporting anything to ... at the moment we're forecasting about 260,000 tonnes [for this month]."
Yesterday, 60,000 tonnes of canola was loaded onto a ship bound for Europe.
"We're doing a lot more canola at the moment because of the [good] prices," Mr Moss said.