An operator of a power plant generator that exploded told the Queensland government at an "early stage" that a report into the incident will not be shared, a judgment has revealed.
But Premier Steven Miles has rejected claims the government tried to keep the report secret, vowing to release it when available.
Almost half a million customers lost power after the explosion in the turbine hall at central Queensland's Callide C power station in May 2021.
State-owned electricity generator CS Energy operates the Callide C plant near Biloela.
A Federal Court judgment on Thursday revealed that then CS Energy CEO Andrew Bills told the government soon afterwards that forensic engineer Sean Brady's independent report into the incident would not be handed over and sought a confidentiality arrangement.
"The evidence from Mr Bills' affidavit shows that ... he told the government from an early stage that Dr Brady's report would not be shared with it and that there was a need to create a confidentiality arrangement with the government to keep communications about the report privileged," Judge Roger Derrington said in his decision.
"It seems that a communication protocol to ensure that legal professional privilege was maintained was put in place.
"It does not, however, specifically relate to Dr Brady's report."
Queensland's opposition said it was proof that the Labor government had made a secret arrangement to ensure the report into the power plant explosion was not released.
"Labor repeatedly told Queenslanders they would release the Brady Report but now it's been exposed Labor knew full-well that would never happen," shadow energy spokeswoman Deb Frecklington said in a statement.
But Mr Miles said the government had every intention to release it.
"The statements of a former CEO of a government-owned corporation, in contradiction of the direction given to him by shareholding ministers, do not represent government policy," he told parliament on Friday.
"It was always our intention to make that report public, whenever it is available.
"We've, in fact, shared our frustration that we don't yet have that report and therefore have not been able to make it public."
Mr Miles said he would table the report "once I have it".
The power station's two Callide B units have continued to operate since the incident, the premier said.
The Callide C3 generator has been back online since April.
The remaining turbine - Callide C4 - will make a staged return to service on June 30 before returning to full capacity on July 31.
