Queensland’s taxpayers are still in the dark about what happened to the Callide coal-fired power station in May 2021 when a unit exploded and caught fire, disconnecting the state from the rest of Australia’s power grid.

The estimated $200 million replacement of the 420-megawatt C4 turbine has also been further delayed and is not expected to come on line until May, two years after the catastrophic failure of the power station.