Ausenco has won a $66 million contract to continue providing operations and maintenance the Isaac Plains coal mine's CHPP.
It is scheduled to run until the end of December 2016.
Ausenco has been responsible for operations at the coal handling preparation plant for the last five years, during which it has not suffered a single lost time injury.
Zimi Meka, Ausenco's CEO, said the contract renewal is due to its service, safety record, and the continuous improvement initiatives implemented at the plant.
Isaac Plains is a joint venture operation between Ocean Coal Mining and Vale Australia.
Its coal handling preparation plant processes around 3.6 million tonnes of raw coal annually.