Barnett avoids revealing Muja station cost WEST Australian Premier Colin Barnett has refused to reveal whether cabinet approved further funding for a botched power station refurbishment. The opposition claims the government has spent $250 million trying to revive two of the Muja station's four generators since 2009. Mr Barnett has refused to explain how the decision to restore the 47-year-old facility was made, except to say it followed correct process. "I'm not going to divulge what is decided in cabinet," he told ABC radio on Wednesday. The premier said the board of state-owned power generator Verve, then-Energy Minister Peter Collier, Treasurer Troy Buswell and he had all agreed on the expenditure. The government has now suspended work on the "failed project" with current Energy Minister Mike Nahan expected to deliver a report on Thursday about costs. "Clearly it's a significant amount of money," Mr Barnett said. It will be mothballed. At some stage it may be reactivated but I think that's unlikely. The premier said the government could look at a private sector group taking it over. While units one and two were "on ice," units three and four had been refurbished and were providing electricity to private sector retailers, he said. Mr Barnett said those contracts were profitable and over time the money would be recouped:"Clearly mistakes were made." The big error was that a corroded boiler wasn't fully inspected. The premier also defended Mr Collier over the "bungle" and admitted that as the premier, he was ultimately responsible. The matter has made the government look incompetent in its second term, along with a delay in completion of the new Fiona Stanley Hospital, political analyst Peter Kennedy said.