A Queensland coal-fired power station will have its partial return to service delayed by issues with international and domestic supplies.
State-owned electricity generator CS Energy operates the Callide C plant near Biloela in central Queensland.
All four units at the power plant were briefly inoperable in November 2022 following a series of accidents and equipment failures.
Callide B units, which are run by CS energy, were quickly back in operation following the incident but Callide C, a join venture with Intergen, has been delayed through 2023.
It was the second incident in over a year at the plant after an explosion in its turbine hall in May 2021 that resulted in 470,000 homes and business being left with no power.
Calide C's return to partial service has now been set back 17 days because of international supply chain issues and illnesses on the plant site, CEO Darren Busine said.
The forecast return to partial service had been moved from January 7 to January 24, he said on Tuesday.
There was no change to the predicted return to service for the full load of Callide 3 or for Callide 4, which is due to be back on line between May and July 2024, Mr Busine said.
"The shift in the partial return reflects a number of challenges, including global supply chain issues with some of our assigned freight carriers being diverted to assist with the humanitarian efforts in the Gaza Strip," he said.
"There's also been a number of local challenges, the recent wet weather and the resourcing challenges, including illnesses of COVID-19 on site which has impacted on our ability to meet the original schedule."
He said the company was made aware on Tuesday of the delay and CS Energy's market obligations required a public announcement.
The company did not foresee any impact on wholesale energy prices.
Energy Minister Mick De Brenni on Tuesday reiterated the state's energy grid was adequately supplied to deal with summer demand.
The power plant can generate up to 1540MW of electricity - about 30 per cent of the state's overnight demand.
