Former Reserve Bank board member Jillian Broadbent says CEFC is a 'very effective tool' THE Coalition was last night staring down warnings by the Clean Energy Finance Corporation - the $10 billion green bank that the government has vowed to scrap - that its closure will come at a cost to the budget rather than save money. Late yesterday, the CEFC's chairwoman, former Reserve Bank board member Jillian Broadbent, told a Senate inquiry that the body had the potential to deliver a $200 million-a-year return to taxpayers after covering its operating costs and the government's cost of funds, if it were able to invest the total $10bn.